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| d a t a sh eet product speci?cation 2003 sep 09 integrated circuits TEA1506p; TEA1506ap; TEA1506t; TEA1506at greenchip ? ii smps control ic
2003 sep 09 2 philips semiconductors product speci?cation greenchip ? ii smps control ic TEA1506p; TEA1506ap; TEA1506t; TEA1506at features distinctive features universal mains supply operation (70 to 276 v ac) high level of integration; giving a low external component count. green features valley or zero voltage switching for minimum switching losses efficient quasi-resonant operation at high power levels frequency reduction at low power standby for improved system efficiency ( 3w) cycle skipping mode at very low loads. protection features safe restart mode for system fault conditions continuous mode protection by means of demagnetization detection (zero switch-on current) accurate and adjustable overvoltage protection (latched in TEA1506; safe restart in TEA1506a) short winding protection undervoltage protection (foldback during overload) overtemperature protection low and adjustable overcurrent protection trip level soft (re)start. applications besides typical application areas, i.e. tv and monitor supplies, the device can be used in adapters and chargers and all applications that demand an efficient and cost-effective solution up to 150 w. unlike the other greenchip ? ii control ics, the TEA1506 has no internal high voltage start-up source and needs to be started by means of an external bleeder resistor. mdb504 TEA1506p TEA1506ap 1 2 3 4 8 7 6 5 fig.1 basic application diagram. 2003 sep 09 3 philips semiconductors product speci?cation greenchip ? ii smps control ic TEA1506p; TEA1506ap; TEA1506t; TEA1506at general description the greenchip ? (1) ii is the second generation of green switched mode power supply (smps) control ics. a high level of integration leads to a cost effective power supply with a low number of external components. the special built-in green functions allow the efficiency to be optimum at all power levels. this holds for quasi-resonant operation at high power levels, as well as fixed frequency operation with valley switching at medium power levels. at low power (standby) levels, the system operates at a reduced frequency and with valley detection. highly efficient and reliable supplies can easily be designed using the greenchip ? ii control ic. (1) greenchip is a trademark of koninklijke philips electronics n.v. ordering information type number package name description version TEA1506p dip8 plastic dual in-line package; 8 leads (300 mil) sot97-1 TEA1506ap TEA1506t so14 plastic small outline package; 14 leads; body width 3.9 mm sot108-1 TEA1506at 2003 sep 09 4 philips semiconductors product speci?cation greenchip ? ii smps control ic TEA1506p; TEA1506ap; TEA1506t; TEA1506at this text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the acrobat reader .this text is here in _ white to force landscape pages to be rotated correctly when browsing through the pdf in the acrobat reader.this text is here inthis text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the acrobat reader. white to force landscape pages to be ... block diagram k , full pagewidth supply management internal supply uvlo start v cc 1 2 3 (2) (3) (6) gnd ctrl frequency control voltage controlled oscillator logic logic over- voltage protection overpower protection short winding soft start s2 over- temperature protection sq r uvlo q maximum on-time protection power-on reset - 1 up/down counter valley TEA1506p; TEA1506ap (TEA1506t; TEA1506 at) 100 mv clamp driver 0.88 v 0.5 v 5 i sense 6 driver mdb505 4 dem 8 (9) (11) (7) (14) drain ocp leb blank i ss i prot(ctrl) sq r v cc < 4.5 v or uvlo (TEA1506at) q i prot(dem) 3.8 v fig.2 block diagram. pin numbers in parenthesis represent the so version. 2003 sep 09 5 philips semiconductors product speci?cation greenchip ? ii smps control ic TEA1506p; TEA1506ap; TEA1506t; TEA1506at pinning symbol pin description dip8 so14 v cc 1 2 supply voltage gnd 2 3 ground ctrl 3 6 control input dem 4 7 input from auxiliary winding for demagnetization timing; overvoltage and overpower protection i sense 5 9 programmable current sense input driver 6 11 gate driver output hvs 7 12, 13 high voltage safety spacer; not connected drain 8 14 drain of external mos switch; input for valley sensing and initial internal supply n.c. - 1, 4, 5, 8, 10 not connected handbook, halfpage mdb506 TEA1506p TEA1506ap 1 2 3 4 v cc gnd ctrl dem drain hvs driver i sense 8 7 6 5 fig.3 pin configuration dip8. handbook, halfpage TEA1506t TEA1506at mdb507 1 2 3 4 5 6 7 n.c. v cc gnd n.c. n.c. ctrl dem drain hvs hvs driver n.c. i sense n.c. 14 13 12 11 10 9 8 fig.4 pin configuration so14. 2003 sep 09 6 philips semiconductors product speci?cation greenchip ? ii smps control ic TEA1506p; TEA1506ap; TEA1506t; TEA1506at functional description the TEA1506 is the controller of a compact flyback converter, and is situated at the primary side. an auxiliary winding of the transformer provides demagnetization detection and powers the ic after start-up. the TEA1506 can operate in multi modes (see fig.5). the next converter stroke is started only after demagnetization of the transformer current (zero current switching), while the drain voltage has reached the lowest voltage to prevent switching losses (green function). the primary resonant circuit of the primary inductance and drain capacitor ensures this quasi-resonant operation. the design can be optimized in such a way that zero voltage switching can be reached over almost the universal mains range. to prevent very high frequency operation at lower loads, the quasi-resonant operation changes smoothly in fixed frequency pwm control. at very low power (standby) levels, the frequency is controlled down, via the vco, to a minimum frequency of approximately 25 khz. start-up and undervoltage lock-out initially the ic is in the save restart mode. as long as v cc is below the v cc(start) level, the supply current is nearly zero. the ic will activate the converter as soon as the voltage on pin v cc passes the v cc(start) level. the ic supply is taken over by the auxiliary winding as soon as the output voltage reaches its intended level. the moment the voltage on pin v cc drops below the undervoltage lock-out level, the ic stops switching and re-enters the safe restart mode. supply management all (internal) reference voltages are derived from a temperature compensated, on-chip band gap circuit. current mode control current mode control is used for its good line regulation behaviour. the on-time is controlled by the internally inverted control voltage, which is compared with the primary current information. the primary current is sensed across an external resistor. the driver output is latched in the logic, preventing multiple switch-on. the internal control voltage is inversely proportional to the external control pin voltage, with an offset of 1.5 v. this means that a voltage range from 1 to 1.5 v on pin ctrl will result in an internal control voltage range from 0.5 to 0 v (a high external control voltage results in a low duty cycle). oscillator the maximum fixed frequency of the oscillator is set by an internal current source and capacitor. the maximum frequency is reduced once the control voltage enters the vco control window. then, the maximum frequency changes linearly with the control voltage until the minimum frequency is reached (see figs 6 and 7). handbook, halfpage vco fixed quasi resonant p (w) mgu508 f (khz) 25 175 fig.5 multi modes operation. handbook, halfpage v ctrl 1 v (typ) 0.52 v 1.5 v (typ) mgu233 v sense(max) fig.6 v sense(max) voltage as function of v ctrl . 2003 sep 09 7 philips semiconductors product speci?cation greenchip ? ii smps control ic TEA1506p; TEA1506ap; TEA1506t; TEA1506at cycle skipping at very low power levels, a cycle skipping mode will be activated. a high control voltage will reduce the switching frequency to a minimum of 25 khz. if the voltage on the control pin is raised even more, switch-on of the external power mosfet will be inhibited until the voltage on the control pin has dropped to a lower value again (see fig.8). for system accuracy, it is not the absolute voltage on the control pin that will trigger the cycle skipping mode, but a signal derived from the internal vco will be used. remark: if the no-load requirement of the system is such that the output voltage can be regulated to its intended level at a switching frequency of 25 khz or above, the cycle skipping mode will not be activated. handbook, halfpage v sense(max) (v) mgu509 f (khz) 25 175 175 khz vco 2 level vco 1 level fig.7 vco frequency as function of v sense(max) . handbook, full pagewidth mgu510 1.5 v - v ctrl i sense f osc f max f min v x (mv) ctrl current comparator cycle skipping x2 v i 1 0 v x 150 mv oscillator driver driver v x (mv) dv 2 dv 1 150 fig.8 the cycle skipping circuitry. the voltage levels dv 1 and dv 2 are fixed in the ic to 50 mv (typical) and 18 mv (typical) respectively. 2003 sep 09 8 philips semiconductors product speci?cation greenchip ? ii smps control ic TEA1506p; TEA1506ap; TEA1506t; TEA1506at demagnetization the system will be in discontinuous conduction mode all the time. the oscillator will not start a new primary stroke until the secondary stroke has ended. demagnetization features a cycle-by-cycle output short-circuit protection by immediately lowering the frequency (longer off-time), thereby reducing the power level. demagnetization recognition is suppressed during the first t suppr time. this suppression may be necessary in applications where the transformer has a large leakage inductance, at low output voltages and at start-up. if pin dem is open-circuit or not connected, a fault condition is assumed and the converter will stop operating immediately. operation will recommence as soon as the fault condition is removed. minimum and maximum on-time the minimum on-time of the smps is determined by the leading edge blanking (leb) time. the ic limits the on-time to 50 m s. when the system desires an on-time longer than 50 m s, a fault condition is assumed (e.g. removed c i in fig.12), the ic will stop switching and enter the safe restart mode. overvoltage protection (ovp) an ovp mode is implemented in the greenchip series. this works for the TEA1506 by sensing the auxiliary voltage via the current flowing into pin dem during the secondary stroke. the auxiliary winding voltage is a well-defined replica of the output voltage. any voltage spikes are averaged by an internal filter. if the output voltage exceeds the ovp trip level, an internal counter starts counting subsequent ovp events. the counter has been added to prevent incorrect ovp detections which might occur during esd or lightning events. if the output voltage exceeds the ovp trip level a few times and not again in a subsequent cycle, the internal counter will count down with twice the speed compared with counting-up. however, when typical 10 cycles of subsequent ovp events are detected, the ic assumes a true ovp and the ovp circuit switches the power mosfet off. next, the controller waits until the uvlo level is reached on pin v cc . when v cc drops to uvlo, capacitor c vcc will be recharged to the v start level. regarding the TEA1506, the ic will not start switching again. subsequently, v cc will drop again to the uvlo level, etc. operation only recommences when the v cc voltage drops below a level of about 4.5 v. regarding the TEA1506a, when the v start level is reached, switching starts again (safe restart mode) when the v start level is reached. this process is repeated as long as the ovp condition exists. the output voltage v o(ovp) at which the ovp function trips, can be set by the demagnetization resistor, r dem : where n s is the number of secondary turns and n aux is the number of auxiliary turns of the transformer. current i (ovp)(dem) is internally trimmed. the value of r dem can be adjusted to the turns ratio of the transformer, thus making an accurate ovp possible. v o ovp () n s n aux ----------- i (ovp)(dem) r dem v clamp(dem)(pos) + {} = 2003 sep 09 9 philips semiconductors product speci?cation greenchip ? ii smps control ic TEA1506p; TEA1506ap; TEA1506t; TEA1506at valley switching a new cycle starts when the power mosfet is switched on (see fig.9). after the on-time (which is determined by the sense voltage and the internal control voltage), the switch is opened and the secondary stroke starts. after the secondary stroke, the drain voltage shows an oscillation with a frequency of approximately where l p is the primary self inductance of the transformer and c d is the capacitance on the drain node. as soon as the oscillator voltage is high again and the secondary stroke has ended, the circuit waits for the lowest drain voltage before starting a new primary stroke. this method is called valley detection. figure 9 shows the drain voltage together with the valley signal, the signal indicating the secondary stroke and the oscillator signal. in an optimum design, the reflected secondary voltage on the primary side will force the drain voltage to zero. thus, zero voltage switching is very possible, preventing large capacitive switching losses and allowing high frequency operation, which results in small and cost effective inductors. 1 2 p l p c d () ----------------------------------------------- p 1 2 -- - cv 2 f = ? ?? handbook, full pagewidth drain secondary stroke mgu235 secondary ringing primary stroke valley ba secondary stroke oscillator a: start of new cycle at lowest drain voltage. b: start of new cycle in a classical pwm system at high drain voltage. fig.9 signals for valley switching. 2003 sep 09 10 philips semiconductors product speci?cation greenchip ? ii smps control ic TEA1506p; TEA1506ap; TEA1506t; TEA1506at overcurrent protection (ocp) the cycle-by-cycle peak drain current limit circuit uses the external source resistor to measure the current accurately. this allows optimum size determination of the transformer core (cost issue). the circuit is activated after the leading edge blanking time, t leb . the ocp circuit limits the sense voltage to an internal level. overpower protection (opp) during the primary stroke, the rectified mains input voltage is measured by sensing the current drawn from pin dem. this current is dependent on the mains voltage, according to the following formula: where: the current information is used to adjust the peak drain current, which is measured via pin i sense . the internal compensation is such that an almost mains independent maximum output power can be realized. the opp curve is given in fig.10. short winding protection after the leading edge blanking time, the short winding protection circuit is activated. if the sense voltage exceeds the short winding protection voltage v swp , the converter will stop switching. once v cc drops below the uvlo level, capacitor c vcc will be recharged and the supply will restart again. this cycle will be repeated until the short-circuit is removed (safe restart mode). the short winding protection will also protect in case of a secondary diode short-circuit. overtemperature protection (otp) an accurate temperature protection is provided in the circuit. when the junction temperature exceeds the thermal shutdown temperature, the ic will enter the safe restart mode. when the v start level is reached, switching starts again. this process is repeated as long as the otp condition exists. i dem v aux r dem -------------- - nv mains r dem -------------------------- ?? n n aux n p ------------ = handbook, halfpage mgu236 0.52 v (typ) 0.3 v (typ) i dem v sense(max) - 24 m a (typ) - 100 m a (typ) fig.10 opp correction curve. 2003 sep 09 11 philips semiconductors product speci?cation greenchip ? ii smps control ic TEA1506p; TEA1506ap; TEA1506t; TEA1506at control pin protection if pin ctrl is open-circuit or not connected, a fault condition is assumed and the converter will stop switching. operation will recommence as soon as the fault condition is removed. soft start-up to prevent transformer rattle during hiccup, the transformer peak current is slowly increased by the soft start function. this can be achieved by inserting a resistor and a capacitor between pin i sense and the sense resistor (see fig.11). an internal current source charges the capacitor to v = i ss r ss , with a maximum of approximately 0.5 v. the start level and the time constant of the increasing primary current level can be adjusted externally by changing the values of r ss and c ss . the charging current i ss will flow as long as the voltage on pin i sense is below approximately 0.5 v. if the voltage on pin i sense exceeds 0.5 v, the soft start current source will start limiting the current i ss . at the v cc(start) level, the i ss current source is completely switched off. since the soft start current i ss is supplied from pin drain, the r ss value will not affect the v cc current during start-up. driver the driver circuit to the gate of the power mosfet has a current sourcing capability of 135 ma typical and a current sink capability of 560 ma typical. this permits fast turn-on and turn-off of the power mosfet for efficient operation. a low driver source current has been chosen to limit the d v/ d t at switch-on. this reduces electro magnetic interference (emi) and also limits the current spikes across r sense . i primary(max) v ocp i ss r ss () C r sense ---------------------------------------------- - = t r ss c ss = handbook, halfpage c ss r ss i sense r sense i ss v ocp start-up mgu237 5 0.5 v fig.11 soft start. 2003 sep 09 12 philips semiconductors product speci?cation greenchip ? ii smps control ic TEA1506p; TEA1506ap; TEA1506t; TEA1506at limiting values in accordance with the absolute maximum rating system (iec 60134); note 1. notes 1. all voltages are measured with respect to ground; positive currents flow into the ic; pin v cc may not be current driven. the voltage ratings are valid provided other ratings are not violated; current ratings are valid provided the maximum power rating is not violated. 2. human body model (hbm): equivalent to discharging a 100 pf capacitor through a 1.5 k w resistor. 3. machine model (mm): equivalent to discharging a 200 pf capacitor through a 0.75 m h coil and a 10 w resistor. thermal characteristics quality specification in accordance with snw-fq-611-d . symbol parameter conditions min. max. unit voltages v cc supply voltage continuous - 0.4 +20 v v ctrl voltage on pin ctrl - 0.4 +5 v v dem voltage on pin dem current limited - 0.4 - v v sense voltage on pin i sense current limited - 0.4 - v v drain voltage on pin drain - 0.4 +650 v currents i ctrl current on pin ctrl - 5ma i dem current on pin dem - 250 +250 m a i sense current on pin i sense - 1 +10 ma i driver current on pin driver d < 10 % - 0.8 +2 a i drain current on pin drain - 5ma general p tot total power dissipation t amb <70 c - 0.75 w t stg storage temperature - 55 +150 c t j operating junction temperature - 20 +145 c v esd electrostatic discharge voltage all pins except pins drain and v cc hbm class 1; note 2 - 2000 v pins drain and v cc hbm class 1; note 2 - 1500 v any pin mm; note 3 - 400 v symbol parameter conditions value unit r th(j-a) thermal resistance from junction to ambient in free air 100 k/w 2003 sep 09 13 philips semiconductors product speci?cation greenchip ? ii smps control ic TEA1506p; TEA1506ap; TEA1506t; TEA1506at characteristics t amb =25 c; v cc = 15 v; all voltages are measured with respect to ground; currents are positive when ?owing into the ic; unless otherwise speci?ed. symbol parameter conditions min. typ. max. unit start-up current source (pin drain) i drain supply current drawn from pin drain v cc < v start - 500 -m a v cc >v start - 50 -m a bv dss breakdown voltage 650 -- v supply voltage management (pin v cc ) v cc(start) start-up voltage on v cc 10.3 11 11.7 v v cc(uvlo) undervoltage lock-out on v cc 8.1 8.7 9.3 v v cc(hys) hysteresis voltage on v cc v cc(start) - v cc(uvlo) 2.0 2.3 2.6 v i cc(oper) supply current under normal operation no load on pin driver 1.1 1.3 1.5 ma i cc(start) supply current in start-up and safe restart mode v cc 2003 sep 09 14 philips semiconductors product speci?cation greenchip ? ii smps control ic TEA1506p; TEA1506ap; TEA1506t; TEA1506at notes 1. for v cc 3 2v. 2. guaranteed by design. valley switch (pin drain) d v/ d t valley valley recognition voltage change - 85 -+ 85 v/ m s t valley-swon delay from valley recognition to switch-on - 150 (2) - ns overcurrent and short winding protection (pin i sense ) v sense(max) maximum source voltage ocp d v/ d t = 0.1 v/ m s 0.48 0.52 0.56 v t pd propagating delay from detecting v sense(max) to switch-off d v/ d t = 0.5 v/ m s - 140 185 ns v swp short winding protection voltage 0.83 0.88 0.96 v t leb blanking time for current and short winding protection 300 370 440 ns i ss soft start current v sense < 0.5 v 45 60 75 m a overvoltage protection (pin dem) i ovp(dem) ovp level on pin dem set by resistor r dem ; see section overvoltage protection (ovp) 54 60 66 m a overpower protection (pin dem) i opp(dem) opp current on pin dem to start opp correction set by resistor r dem ; see section overpower protection (opp) -- 24 -m a i opp50%(dem) opp current on pin dem; where maximum source voltage is limited to 0.3 v -- 100 -m a driver (pin driver) i source source current capability of driver v cc = 9.5 v; v driver =2v -- 135 - ma i sink sink current capability of driver v cc = 9.5 v; v driver =2v - 240 - ma v cc = 9.5 v; v driver = 9.5 v - 560 - ma v o(max) maximum output voltage of the driver v cc > 12 v - 11.5 12 v overtemperature protection t prot(max) maximum temperature protection level 130 140 150 c t prot(hys) hysteresis for the temperature protection level - 8 (2) - c symbol parameter conditions min. typ. max. unit 2003 sep 09 15 philips semiconductors product speci?cation greenchip ? ii smps control ic TEA1506p; TEA1506ap; TEA1506t; TEA1506at application information a converter with the TEA1506 consists of an input filter, a transformer with a third winding (auxiliary), and an output stage with a feedback circuit. capacitor c vcc (at pin v cc ) buffers the supply voltage of the ic, which is powered via the resistor r s during start-up and via the auxiliary winding during operation. a sense resistor converts the primary current into a voltage at pin i sense . the value of this sense resistor defines the maximum primary peak current. handbook, full pagewidth TEA1506p TEA1506ap 1 2 3 4 v cc c i v mains r ctrl r dem r sense c ctrl c vcc v o v i v m c c o gnd ctrl dem drain power mosfet driver i sense 8 7 6 5 hvs n.c. n p n s n aux r reg1 r reg2 r ss c ss d o mdb508 micro- controller r s c micro d micro fig.12 flyback configuration with secondary sensing. 2003 sep 09 16 philips semiconductors product speci?cation greenchip ? ii smps control ic TEA1506p; TEA1506ap; TEA1506t; TEA1506at handbook, full pagewidth v i v o v i v d (power mosfet) v cc v m c start-up sequence normal operation normal operation overvoltage protection (TEA1506ap/TEA1506at) output short-circuit mdb509 v gate fig.13 typical waveforms. 2003 sep 09 17 philips semiconductors product speci?cation greenchip ? ii smps control ic TEA1506p; TEA1506ap; TEA1506t; TEA1506at package outlines references outline version european projection issue date iec jedec jeita sot97-1 99-12-27 03-02-13 unit a max. 12 b 1 (1) (1) (1) b 2 cd e e m z h l mm dimensions (inch dimensions are derived from the original mm dimensions) a min. a max. b max. w m e e 1 1.73 1.14 0.53 0.38 0.36 0.23 9.8 9.2 6.48 6.20 3.60 3.05 0.254 2.54 7.62 8.25 7.80 10.0 8.3 1.15 4.2 0.51 3.2 inches 0.068 0.045 0.021 0.015 0.014 0.009 1.07 0.89 0.042 0.035 0.39 0.36 0.26 0.24 0.14 0.12 0.01 0.1 0.3 0.32 0.31 0.39 0.33 0.045 0.17 0.02 0.13 b 2 050g01 mo-001 sc-504-8 m h c (e ) 1 m e a l seating plane a 1 w m b 1 e d a 2 z 8 1 5 4 b e 0 5 10 mm scale note 1. plastic or metal protrusions of 0.25 mm (0.01 inch) maximum per side are not included. pin 1 index dip8: plastic dual in-line package; 8 leads (300 mil) sot97-1 2003 sep 09 18 philips semiconductors product speci?cation greenchip ? ii smps control ic TEA1506p; TEA1506ap; TEA1506t; TEA1506at unit a max. a 1 a 2 a 3 b p cd (1) e (1) (1) eh e ll p qz y w v q references outline version european projection issue date iec jedec jeita mm inches 1.75 0.25 0.10 1.45 1.25 0.25 0.49 0.36 0.25 0.19 8.75 8.55 4.0 3.8 1.27 6.2 5.8 0.7 0.6 0.7 0.3 8 0 o o 0.25 0.1 dimensions (inch dimensions are derived from the original mm dimensions) note 1. plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included. 1.0 0.4 sot108-1 x w m q a a 1 a 2 b p d h e l p q detail x e z e c l v m a (a ) 3 a 7 8 1 14 y 076e06 ms-012 pin 1 index 0.069 0.010 0.004 0.057 0.049 0.01 0.019 0.014 0.0100 0.0075 0.35 0.34 0.16 0.15 0.05 1.05 0.041 0.244 0.228 0.028 0.024 0.028 0.012 0.01 0.25 0.01 0.004 0.039 0.016 99-12-27 03-02-19 0 2.5 5 mm scale so14: plastic small outline package; 14 leads; body width 3.9 mm sot108-1 2003 sep 09 19 philips semiconductors product speci?cation greenchip ? ii smps control ic TEA1506p; TEA1506ap; TEA1506t; TEA1506at soldering introduction this text gives a very brief insight to a complex technology. a more in-depth account of soldering ics can be found in our data handbook ic26; integrated circuit packages (document order number 9398 652 90011). there is no soldering method that is ideal for all ic packages. wave soldering is often preferred when through-hole and surface mount components are mixed on one printed-circuit board. wave soldering can still be used for certain surface mount ics, but it is not suitable for fine pitch smds. in these situations reflow soldering is recommended. driven by legislation and environmental forces the worldwide use of lead-free solder pastes is increasing. through-hole mount packages s oldering by dipping or by solder wave typical dwell time of the leads in the wave ranges from 3 to 4 seconds at 250 c or 265 c, depending on solder material applied, snpb or pb-free respectively. the total contact time of successive solder waves must not exceed 5 seconds. the device may be mounted up to the seating plane, but the temperature of the plastic body must not exceed the specified maximum storage temperature (t stg(max) ). if the printed-circuit board has been pre-heated, forced cooling may be necessary immediately after soldering to keep the temperature within the permissible limit. m anual soldering apply the soldering iron (24 v or less) to the lead(s) of the package, either below the seating plane or not more than 2 mm above it. if the temperature of the soldering iron bit is less than 300 c it may remain in contact for up to 10 seconds. if the bit temperature is between 300 and 400 c, contact may be up to 5 seconds. surface mount packages r eflow soldering reflow soldering requires solder paste (a suspension of fine solder particles, flux and binding agent) to be applied to the printed-circuit board by screen printing, stencilling or pressure-syringe dispensing before package placement. several methods exist for reflowing; for example, convection or convection/infrared heating in a conveyor type oven. throughput times (preheating, soldering and cooling) vary between 100 and 200 seconds depending on heating method. typical reflow peak temperatures range from 215 to 270 c depending on solder paste material. the top-surface temperature of the packages should preferably be kept: below 220 c (snpb process) or below 245 c (pb-free process) C for all the bga and ssop-t packages C for packages with a thickness 3 2.5 mm C for packages with a thickness < 2.5 mm and a volume 3 350 mm 3 so called thick/large packages. below 235 c (snpb process) or below 260 c (pb-free process) for packages with a thickness < 2.5 mm and a volume < 350 mm 3 so called small/thin packages. moisture sensitivity precautions, as indicated on packing, must be respected at all times. w ave soldering conventional single wave soldering is not recommended for surface mount devices (smds) or printed-circuit boards with a high component density, as solder bridging and non-wetting can present major problems. to overcome these problems the double-wave soldering method was specifically developed. if wave soldering is used the following conditions must be observed for optimal results: use a double-wave soldering method comprising a turbulent wave with high upward pressure followed by a smooth laminar wave. for packages with leads on two sides and a pitch (e): C larger than or equal to 1.27 mm, the footprint longitudinal axis is preferred to be parallel to the transport direction of the printed-circuit board; C smaller than 1.27 mm, the footprint longitudinal axis must be parallel to the transport direction of the printed-circuit board. the footprint must incorporate solder thieves at the downstream end. for packages with leads on four sides, the footprint must be placed at a 45 angle to the transport direction of the printed-circuit board. the footprint must incorporate solder thieves downstream and at the side corners. during placement and before soldering, the package must be fixed with a droplet of adhesive. the adhesive can be applied by screen printing, pin transfer or syringe 2003 sep 09 20 philips semiconductors product speci?cation greenchip ? ii smps control ic TEA1506p; TEA1506ap; TEA1506t; TEA1506at dispensing. the package can be soldered after the adhesive is cured. typical dwell time of the leads in the wave ranges from 3 to 4 seconds at 250 c or 265 c, depending on solder material applied, snpb or pb-free respectively. a mildly-activated flux will eliminate the need for removal of corrosive residues in most applications. m anual soldering fix the component by first soldering two diagonally-opposite end leads. use a low voltage (24 v or less) soldering iron applied to the flat part of the lead. contact time must be limited to 10 seconds at up to 300 c. when using a dedicated tool, all other leads can be soldered in one operation within 2 to 5 seconds between 270 and 320 c. suitability of ic packages for wave, re?ow and dipping soldering methods notes 1. for more detailed information on the bga packages refer to the (lf)bga application note (an01026); order a copy from your philips semiconductors sales office. 2. all surface mount (smd) packages are moisture sensitive. depending upon the moisture content, the maximum temperature (with respect to time) and body size of the package, there is a risk that internal or external package cracks may occur due to vaporization of the moisture in them (the so called popcorn effect). for details, refer to the drypack information in the data handbook ic26; integrated circuit packages; section: packing methods . 3. for sdip packages, the longitudinal axis must be parallel to the transport direction of the printed-circuit board. 4. these transparent plastic packages are extremely sensitive to reflow soldering conditions and must on no account be processed through more than one soldering cycle or subjected to infrared reflow soldering with peak temperature exceeding 217 c 10 c measured in the atmosphere of the reflow oven. the package body peak temperature must be kept as low as possible. 5. these packages are not suitable for wave soldering. on versions with the heatsink on the bottom side, the solder cannot penetrate between the printed-circuit board and the heatsink. on versions with the heatsink on the top side, the solder might be deposited on the heatsink surface. 6. if wave soldering is considered, then the package must be placed at a 45 angle to the solder wave direction. the package footprint must incorporate solder thieves downstream and at the side corners. 7. wave soldering is suitable for lqfp, qfp and tqfp packages with a pitch (e) larger than 0.8 mm; it is definitely not suitable for packages with a pitch (e) equal to or smaller than 0.65 mm. 8. wave soldering is suitable for ssop, tssop, vso and vssop packages with a pitch (e) equal to or larger than 0.65 mm; it is definitely not suitable for packages with a pitch (e) equal to or smaller than 0.5 mm. 9. hot bar soldering or manual soldering is suitable for pmfp packages. mounting package (1) soldering method wave reflow (2) dipping through-hole mount dbs, dip, hdip, sdip, sil suitable (3) - suitable through-hole- surface mount pmfp (9) not suitable not suitable - surface mount bga, lbga, lfbga, sqfp, ssop-t (4) , tfbga, vfbga not suitable suitable - dhvqfn, hbcc, hbga, hlqfp, hsqfp, hsop, htqfp, htssop, hvqfn, hvson, sms not suitable (5) suitable - plcc (6) , so, soj suitable suitable - lqfp, qfp, tqfp not recommended (6)(7) suitable - ssop, tssop, vso, vssop not recommended (8) suitable - 2003 sep 09 21 philips semiconductors product speci?cation greenchip ? ii smps control ic TEA1506p; TEA1506ap; TEA1506t; TEA1506at data sheet status notes 1. please consult the most recently issued data sheet before initiating or completing a design. 2. the product status of the device(s) described in this data sheet may have changed since this data sheet was published. the latest information is available on the internet at url http://www.semiconductors.philips.com. 3. for data sheets describing multiple type numbers, the highest-level product status determines the data sheet status. level data sheet status (1) product status (2)(3) definition i objective data development this data sheet contains data from the objective speci?cation for product development. philips semiconductors reserves the right to change the speci?cation in any manner without notice. ii preliminary data quali?cation this data sheet contains data from the preliminary speci?cation. supplementary data will be published at a later date. philips semiconductors reserves the right to change the speci?cation without notice, in order to improve the design and supply the best possible product. iii product data production this data sheet contains data from the product speci?cation. philips semiconductors reserves the right to make changes at any time in order to improve the design, manufacturing and supply. relevant changes will be communicated via a customer product/process change noti?cation (cpcn). definitions short-form specification ? the data in a short-form specification is extracted from a full data sheet with the same type number and title. for detailed information see the relevant data sheet or data handbook. limiting values definition ? limiting values given are in accordance with the absolute maximum rating system (iec 60134). stress above one or more of the limiting values may cause permanent damage to the device. these are stress ratings only and operation of the device at these or at any other conditions above those given in the characteristics sections of the specification is not implied. exposure to limiting values for extended periods may affect device reliability. application information ? applications that are described herein for any of these products are for illustrative purposes only. philips semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification. disclaimers life support applications ? these products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. philips semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify philips semiconductors for any damages resulting from such application. right to make changes ? philips semiconductors reserves the right to make changes in the products - including circuits, standard cells, and/or software - described or contained herein in order to improve design and/or performance. when the product is in full production (status production), relevant changes will be communicated via a customer product/process change notification (cpcn). philips semiconductors assumes no responsibility or liability for the use of any of these products, conveys no licence or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified. ? koninklijke philips electronics n.v. 2003 sca75 all rights are reserved. reproduction in whole or in part is prohibited without the prior written consent of the copyright owne r. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. no liability will be accepted by the publisher for any consequence of its use. publication thereof does not con vey nor imply any license under patent- or other industrial or intellectual property rights. philips semiconductors C a worldwide company contact information for additional information please visit http://www.semiconductors.philips.com . fax: +31 40 27 24825 for sales of?ces addresses send e-mail to: sales.addresses@www.semiconductors.philips.com . printed in the netherlands 613502/01/pp 22 date of release: 2003 sep 09 document order number: 9397 750 11434 |
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