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til5942, TIL5942A current-mode-pwm controller with optoisolated voltage reference and error amplifier soes040 october 1997 1 post office box 655303 ? dallas, texas 75265 tl1431, optocoupler, and advanced current-mode-pwm in a 16-pin dip linbicmos ? current-mode-pwm operates at frequencies up to 1 mhz 100- m a maximum start-up current 2-a, 30-ns mosfet drive output tl1431 voltage reference/feedback amplifier 7500-v peak withstand voltage available with gull wing vde lead forms 40 c to 100 c free-air operating temperature range safety regulatory approvals pending ul... file number e65085 fimko, semko, nemko, demko en60065/iec 65 en60950/iec 950 vde 0884, level 4 (6000-v insulation) description the til5942 and TIL5942A consist of an advanced current-mode-pwm controller and a tl1431 adjustable precision shunt regulator, incorporated in a single package. the controller provides a photodetector, an improved mosfet drive output, and an led for isolation. the tl1431 is configured as a precision reference/error amplifier. using the til5942 or the TIL5942A, the power-supply designer can implement the controller for an isolated dc/dc converter or off-line switching power supply, with one ic and a few passive components. the til5942 standard version has a reference voltage tolerance of 0.8% and the TIL5942A has a reference voltage tolerance of 0.4% these controllers are available in a 16-pin pdip with a lead form for through-hole, or gull-wing lead form for surface-mount applications. these devices operate over a 40 c to 100 c junction temperature range. end equipment applications for the til5942 and the TIL5942A include isolated ac-to-dc power supplies and dc/dc converters. available options packaged devices t a plastic dual-in-line with vde lead form, through-hole plastic dual-in-line with vde lead form, surface-mount leads 40 c to 100 c til5942nfc, TIL5942Anfc til5942nfd, TIL5942Anfd please be aware that an important notice concerning availability, standard warranty, and use in critical applications of texas instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 1 2 3 4 7 8 16 15 14 13 12 11 10 9 fb input_gnd comp bias nc nc is vc rt/ct pwm_gnd ref v cc reg out nfc or nfd package (top view) production data information is current as of publication date. products conform to specifications per the terms of texas instruments standard warranty. production processing does not necessarily include testing of all parameters. linbicmos is a trademark of texas instruments incorporated. copyright ? 1997, texas instruments incorporated
til5942, TIL5942A current-mode-pwm controller with optoisolated voltage reference and error amplifier soes040 october 1997 2 post office box 655303 ? dallas, texas 75265 functional block diagram voltage reference voltage regulator oscillator dq clk r driver led primary secondary tl1431x 11 13 12 14 4 3 1 2 1v 10 9 16 15 reg out is vc v cc pwm_gnd ref rt/ct bias comp fb input_gnd i (vc) i ib(is) terminal functions terminal i/o description name no. i/o description fb 1 i feedback. fb is an error-amplifier inverting input. input_gnd 2 i ground connection for the voltage reference/error amplifier section. comp 3 o error amplifier output/led cathode connection. rc networks may be connected between comp, fb, and gnd to stabilize the control loop of the dc/dc converter. bias 4 i optocoupler led anode. bias connects to the output voltage of the dc/dc converter or to some other suitable supply voltage through a resistor. nc 7,8 no connection. out 9 o drive output. out is a pulse-width-modulated output. reg 10 o regulator output. a 0.1- m f, typical, ceramic capacitor should be connected between reg and pwm_gnd. v cc 11 i supply voltage for pwm controller ref 12 o pwm 5-v reference output pwm_gnd 13 i pwm ground connection rt/ct 14 connection for external rc network to set pwm oscillator frequency vc 15 connection for integrating capacitor (0.1 m f typ) to pwm_gnd (terminal 13) is 16 i pwm current sense input
til5942, TIL5942A current-mode-pwm controller with optoisolated voltage reference and error amplifier soes040 october 1997 3 post office box 655303 ? dallas, texas 75265 theory of operation the current through the led is controlled by the precision reference amplifier according to the voltage error at fb, with respect to the internal 2.5-v reference. the light emitted by the led is coupled to the pwm controller to change the modulation duty cycle and reduce the error voltage. the pwm controller is in the off state until v cc is greater than the turn-on threshold voltage level. typically the controller turns on at 16 v. it stays in the on state until the voltage drops below the turn-off threshold of 10 v typical. upon turning on, the controller generates an internal reference voltage v ref of 5 v, which controls the chip logic and can be used for low-power external applications. a voltage v reg is also generated to supply current to charge an external capacitor c reg , which supplies instant current for the pulsing output. the oscillator shown in figure 1 consists of an external resistance-capacitance (rc) network, a voltage comparator, logic, a 125-ns one-shot for the dead time, and a mosfet used to discharge the external capacitor to ground each cycle. at the end of the reset period, c t charges toward the 5-v reference through timing resistor r t for a time given by one time constant r t c t . the oscillator period is given by: t osc = r t c t + 0.125 m s. a current i ib(is) supplied out of is biases the current-sense resistor on the primary side of the power supply. if the voltage v (is) at is exceeds 1 v, the output pulse is reset. an internal current source i (vc) supplies a nominal current of 4 m a as a reference. this current charges a capacitor connected between vc and ground. the photodiode is connected internally in parallel with the capacitor. the light-generated photodiode current tends to discharge the capacitor until a steady-state balance is reached. when i (vc) is greater than the photodiode current, a net current is being sourced and the capacitor is charged. when i (vc) is lower than the photodiode current, a net current is being sinked and the capacitor is discharged. when i (vc) is equal to the photodiode current, the capacitor voltage stays constant. the voltage at vc is monitored by an internal comparator with a threshold voltage given by v (is) + 2vd, where vd is a diode voltage drop of typically 0.7 v. whenever vc is below this threshold, the output pulse is reset. the output pulse is enabled if v (is) is less than 1 v and vc is greater than its threshold. the 5-v reference on the pwm chip is brought out on ref and can be used as a reference and/or supply for external circuits as long as the output current is limited to 20 ma and the power dissipation is not exceeded. it is recommended that a 0.1-f ceramic capacitor be connected between ref and pwm_gnd. r t (see note a) c t ref rt/ct pwm_gnd note a: t osc = r t c t + 0.125 m s figure 1. typical oscillator application
til5942, TIL5942A current-mode-pwm controller with optoisolated voltage reference and error amplifier soes040 october 1997 4 post office box 655303 ? dallas, texas 75265 absolute maximum ratings over operating free-air temperature (unless otherwise noted) 2 led/ref section supply voltage range, v cc , bias to gnd 0.3 v to 37 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . input current range at fb 50 m a to 10 ma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . led forward current 50 ma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . input led reverse voltage 6 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . pwm section supply voltage range, v cc 0.3 v to 30 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . input voltage at is 0.3 v to 5 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . continuous supply current, i cc 15 ma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . entire package isolation voltage 7.5 kv peak or dc (5.3 kvrms) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . total continuous power dissipation see dissipation rating table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . operating free-air temperature range, t a 40 c to 100 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . storage temperature range, t stg 55 c to 150 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 stresses beyond those listed under aabsolute maximum ratingso may cause permanent damage to the device. these are stress rating s only, and functional operation of the device at these or any other conditions beyond those indicated under arecommended operating conditi onso is not implied. exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. dissipation rating table package t a 25 c power rating derating factor above t a = 25 c t a = 70 c power rating t a = 85 c power rating nfd 1000 mw 8 mw/ c 640 mw 520 mw nfc 1000 mw 8 mw/ c 640 mw 520 mw recommended operating conditions min max unit supply voltage range, v cc , pwm 11 30 v peak output current, i o 2 a output current, ref 0 20 ma oscillator frequency, f osc 10 1000 khz external timing resistance, r t 2 39 k w external timing capacitance, c t 0.47 10 nf
til5942, TIL5942A current-mode-pwm controller with optoisolated voltage reference and error amplifier soes040 october 1997 5 post office box 655303 ? dallas, texas 75265 electrical characteristics over recommended operating junction temperature range, v cc = 17 v, r t = 3.9 k w , c t = 1 nf (unless otherwise noted) voltage reference/error amplifier parameter test conditions min typ max unit v f reference voltage t a = 25 c, v o ( comp ) = v i ( fb ) til5942 2.48 2.5 2.52 v v ref r e f erence vo lt age o(comp) i(fb) i i(led) = 10 ma, see figure 2 TIL5942A 2.49 2.5 2.51 v v ref(dev) deviation of reference voltage over temperature t a = 25 c to 100 c, v o(comp) = v i(fb) i i(led) = 10 ma, see figure 2 25 mv ratio of reference voltage change to change in input light-emitting-diode voltage d v i(led) = 4 v to 37 v, i i(led) = 10 ma 1.1 2 mv/v i i(fb) feedback input current i i(led) = 10 ma, see figure 4 r3 = 10 k w 1.5 3 m a i ref(dev) deviation of reference input current over full temperature range i i(led) = 10 ma, t a = 25 c to 100 c r3 = 10 k w, see figure 4 0.5 m a i drv(min) minimum drive current t a = 25 c, v o(comp) = v i(fb) 0.4 1 ma i i(off) off-state input light-emitting diode current v i(led) = 37 v, see figure 5 v i(fb) = 0 0.18 0.5 m a ? zka ? 2 regulator output impedance v o(comp) = v i(fb) i o(comp) = 1 ma to 50 ma f 1 khz 0.1 2 this symbol is not currently listed within eia or jedec standards for semiconductor symbology. led parameter test conditions min typ max unit v f forward voltage t a = 25 c, v o(comp) = v i(fb) , i i(led) = 10 ma, see figure 2 1.2 1.4 v i r led reverse current v o = 6 v 10 m a pwm section voltage reference parameter test conditions min typ max unit v ref reference voltage i o = 1 ma, t j = 25 c 4.95 5 5.05 v v ref(line reg) reference line regulation v cc = 11 v to 30 v 50 mv v ref(load reg) reference load regulation i o = 0 ma to 20 ma 25 mv v f(t ) reference tem p erature regulation t a = 25 c to 100 c 4 mv v ref(temp reg) r e f erence t empera t ure regu l a ti on t a = 25 c to 40 c 4 mv oscillator parameter test conditions min typ max unit f osc frequency r = 3.9 k w , c = 1 nf 225 250 275 khz t (off) dead time, (minimum off time) 100 148 200 ns minimum timing ramp voltage 0.5 v peak timing ramp voltage 3.2 v v ref v i(led)
til5942, TIL5942A current-mode-pwm controller with optoisolated voltage reference and error amplifier soes040 october 1997 6 post office box 655303 ? dallas, texas 75265 electrical characteristics over recommended operating junction temperature range, v cc = 15 v, r t = 3.9 k w , c t = 1 nf (unless otherwise noted) (continued) current sense parameter test conditions min typ max unit i ib(is) input bias current, is 4 10 m a t d delay time to output 70 ns v it(cs) current sense threshold 0.9 1.0 1.1 v integrating capacitor current parameter test conditions min typ max unit i o(cap) capacitor integrating current at vc with led off i i(led) = 0 5 10 m a i l photodiode light current at vc, i (vc)(on) i (vc)(off) i i(led) = 10 ma, t a = 25 c 5 8 m a pwm (pulse-width modulation) parameter test conditions min typ max unit maximum duty cycle c l = 1 nf, c reg = 0.1 m f 97% minimum duty cycle c l = 1 nf, c reg = 0.1 m f 0 uvlo (under voltage lockout) parameter test conditions min typ max unit v it(h) start-up threshold voltage 15 16 17 v v it(l) minimum operating voltage after start-up 9 10 11 v supply current parameter test conditions min typ max unit i cc(off) start-up current v cc < 15 v 55 100 m a i cc(on) operating supply current v cc > 11 v 8 13 16 ma output section parameter test conditions min typ max unit v oh high level out p ut voltage i o = 20 ma 11 11.7 v v oh hi g h - l eve l ou t pu t vo lt age i o = 200 ma 10.5 11.2 v v ol low level out p ut voltage i o = 20 ma 0.78 0.9 v v ol l ow- l eve l ou t pu t vo lt age i o = 200 ma 1.38 2 v t r rise time t j = 25 c, c l = 1 nf 20 35 ns t f fall time t j = 25 c, c l = 1 nf 20 35 ns regulator parameter test conditions min typ max unit v o(reg) regulator output voltage v cc = 17 v 12 12.5 13.5 v i os(reg) regulator short-circuit output current v o = 0 v 9 12.5 15.0 ma
til5942, TIL5942A current-mode-pwm controller with optoisolated voltage reference and error amplifier soes040 october 1997 7 post office box 655303 ? dallas, texas 75265 parameter measurement information 1 2 4 3 16 15 i i(led) + + v f v ref v o(comp) 1 2 4 3 i i(led) v ref v i(led) r1 r2 a v v figure 2. v ref , v f , i min test circuit figure 3. d v ref / d v i(led) test circuit v v 14 13 12 11 10 9 pwm with photo- diode 16 15 14 13 12 11 10 9 pwm with photo- diode figure 4. i i(fb) test circuit figure 5. i i(off) test circuit 1 2 4 3 i i(fb) 1 2 4 3 i i(off) v ref i i(led) v r3 v a a v i(led) 16 15 14 13 12 11 10 9 pwm with photo- diode 16 15 14 13 12 11 10 9 pwm with photo- diode
til5942, TIL5942A current-mode-pwm controller with optoisolated voltage reference and error amplifier soes040 october 1997 8 post office box 655303 ? dallas, texas 75265 typical characteristics table of graphs figure v f led forward voltage free-air temperature 6 v ref input reference voltage free-air temperature 7 i i(fb) feedback input current free-air temperature 8 i cc(on) on-state supply current free-air temperature 9 v ref pwm reference voltage free-air temperature 10 v reg pwm regulator voltage free-air temperature 11 pwm relative oscillator frequency free-air temperature 12 i (vc) integrating capacitor current free-air temperature 13 i l photodiode current source free-air temperature 14 i ib(is) sense current source free-air temperature 15 t (off) pwm dead time free-air temperature 16 i os(reg) pwm regulator short-circuit current free-air temperature 17 v ol(1) low-state output voltage free-air temperature 18 v ol(2) low-state output voltage free-air temperature 19 v it(h) pwm turn-on threshold voltage free-air temperature 20 v it(l) pwm turn-off threshold voltage free-air temperature 21 pwm threshold voltages showing hysteresis free-air temperature 22
til5942, TIL5942A current-mode-pwm controller with optoisolated voltage reference and error amplifier soes040 october 1997 9 post office box 655303 ? dallas, texas 75265 typical characteristics figure 6 t a free-air temperature c led forward voltage vs free-air temperature 1.25 1.15 1.05 0.95 20 20 1.3 1.2 1.1 1 0 40 100 i i(led) = 10 ma 1.35 40 v 60 80 f led forward voltage v figure 7 t a free-air temperature c input reference voltage vs free-air temperature 2.6 2.4 2.2 2 20 20 2.7 2.5 2.3 2.1 0 40 100 i i(led) = 10 ma 3 40 v 60 80 ref input reference voltage v 2.8 2.9 figure 8 t a free-air temperature c feedback input current vs free-air temperature 1.2 0.8 0.4 0 20 20 1.4 1 0.6 0.2 0 40 100 i i(led) = 10 ma r = 10 k w 1.8 40 i 60 80 i(fb) feedback input current m a 1.6 figure 9 t a free-air temperature c on-state supply current vs free-air temperature 13.6 13.2 12.8 12.4 20 20 13.8 13.4 13 12.6 0 40 100 v cc = 17 v 14.2 40 60 80 14 i cc(on) on-state supply current - ma
til5942, TIL5942A current-mode-pwm controller with optoisolated voltage reference and error amplifier soes040 october 1997 10 post office box 655303 ? dallas, texas 75265 typical characteristics figure 10 t a free-air temperature c pwm reference voltage vs free-air temperature 5.01 4.99 4.97 4.95 20 20 5.02 5 4.98 4.96 0 40 100 5.05 40 v 60 80 ref pwm reference voltage v 5.03 5.04 v cc = 17 v i o = 10 ma figure 11 t a free-air temperature c pwm regulator voltage vs free-air temperature 12.51 12.5 12.49 12.48 20 20 0 40 100 12.53 40 v 60 80 reg pwm regulator voltage v 12.52 v cc = 17 v figure 12 t a free-air temperature c pwm relative oscillator frequency vs free-air temperature 1.02 1.01 1 0.99 20 20 1.015 1.005 0.995 0 40 100 v cc = 17 v 1.025 40 60 80 pwm relative oscillator frequency khz figure 13 t a free-air temperature c integrating capacitor current vs free-air temperature 2 4 6 8 20 20 3 5 7 0 40 100 0 40 i 60 80 (vc) integrating capacitor current m a 1
til5942, TIL5942A current-mode-pwm controller with optoisolated voltage reference and error amplifier soes040 october 1997 11 post office box 655303 ? dallas, texas 75265 typical characteristics figure 14 t a free-air temperature c photodiode current source vs free-air temperature 10 4 0 20 20 8 6 2 0 40 100 12 40 60 80 v cc = 17 v i l(led) = 10 ma photodiode current source m a figure 15 t a free-air temperature c sense current source vs free-air temperature 2 4 6 8 20 20 3 5 7 0 40 100 0 40 i 60 80 ib(is) sense current source m a 1 figure 16 t a free-air temperature c pwm dead time vs free-air temperature 160 150 140 130 20 20 155 145 135 0 40 100 170 40 60 80 pwm dead time ns 165 t (off) figure 17 t a free-air temperature c pwm regulator short-circuit current vs free-air temperature 12 8 4 0 20 20 14 10 6 2 0 40 100 18 40 60 80 pwm regulator short-circuit current ma 16 i os(reg)
til5942, TIL5942A current-mode-pwm controller with optoisolated voltage reference and error amplifier soes040 october 1997 12 post office box 655303 ? dallas, texas 75265 typical characteristics figure 18 t a free-air temperature c low-state output voltage vs free-air temperature 1.2 0.8 0.4 0 20 20 1.4 1 0.6 0.2 0 40 100 2 40 60 80 low-state output voltage v 1.6 1.8 v cc = 17 v i o = 20 ma v ol(1) figure 19 t a free-air temperature c low-state output voltage vs free-air temperature 1.42 1.38 1.34 1.3 20 20 1.44 1.4 1.36 1.32 0 40 100 1.5 40 60 80 1.46 1.48 i o = 200 ma low-state output voltage v v ol(2) figure 20 t a free-air temperature c pwm turn-on threshold voltage vs free-air temperature 16.05 15.95 15.85 15.75 20 20 16.1 16 15.9 15.8 0 40 100 16.25 40 60 80 16.15 16.2 i o = 200 ma v it(h) pwm turn-on threshold voltage v figure 21 t a free-air temperature c pwm turn-off threshold voltage vs free-air temperature 10.05 9.95 9.85 9.75 20 20 10.1 10 9.9 9.8 0 40 100 10.25 40 60 80 10.15 10.2 v it(l) pwm turn-off threshold voltage v
til5942, TIL5942A current-mode-pwm controller with optoisolated voltage reference and error amplifier soes040 october 1997 13 post office box 655303 ? dallas, texas 75265 typical characteristics t a free-air temperature c pwm threshold voltages showing hysteresis vs free-air temperature 12 8 4 0 20 20 14 10 6 2 0 40 100 18 40 60 80 pwm threshold voltages showing hysteresis v 16 v it(h) v it(l) figure 22
til5942, TIL5942A current-mode-pwm controller with optoisolated voltage reference and error amplifier soes040 october 1997 t emp l ate r e l ease d ate: 7 11 94 14 post office box 655303 dallas, texas 75265 ? 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 r10 12 k w c28 1 m f, 63 v c27 1000 pf c26 470 pf r11 1 k w r5 0.62 w q1 irfbc40 cr2 r4 150 w r6 1o k w c7 0.1 m f c25 0.1 m f, 63 v r15 r16 c8 c9 r12 c5 100 m f, 25 v cr1 r3 4.7 w c22 c23 + cr3 r7 c10 c12 2200 m f, + l3 c11 470 m f, + c14 0.1 m f r14 100 w c13 0.1 m f q2 r17 5 v gnd 12 v gnd 12 v r8 c16 l2 c15 470 m f, + c17 100 m f, + c18 0.1 m f r9 100 w c29 0.001 m f, 100 v + c20 100 m f, 25 v in out gnd + c19 470 m f c21 0.1 m f, 63 v c6 cr6 r18 + c4 120 m f, 400 v ac + ac c3 470 pf, 250 v c2 470 pf, 250 v l1 c1 0.33 m f, 250 v t mv1 275 v rt1 r1 680 k w, 0.5 w f1 3a l n j1 j2 secondary br1 t1 cr5 u2 ua79m12ckc cr4 5 4 3 2 1 cr7 r13 c24 0.1 m f r2 750 k w nc nc nc nc u1 til5942, TIL5942A figure 23. off-line power-supply application application information
til5942, TIL5942A current-mode-pwm controller with optoisolated voltage reference and error amplifier soes040 october 1997 15 post office box 655303 ? dallas, texas 75265 table 1. bill of materials for til5942 and TIL5942A off-line power-supply item no. ref des part number description vendor 1 u1 til5942nfc ic, pwm controller texas instruments 2 u2 ua79m12ckc ic, voltage regulator texas instruments 3 q1 irfbc40 n-ch mosfet 8a/600 v international rectifier (ir) 4 q2 s4015l scr 100 v teccor electronics 5 mv1 erz-v10d431 mov, 275 v panasonic 6 bd1 br86d bridge, 2a/600 v diodes, inc. 7 rt1 cl80 thermistor keystone 8 cr1 1n4148ct rectifier, 100ma/100 v diodes, inc. 9 cr2 1n4148ct rectifier, 100ma/100 v diodes, inc. 10 cr3 6tq045 rectifier, 7.5a/45 v international rectifier (ir) 11 cr4 31df2 rectifier, 3a/200 v international rectifier (ir) 12 cr5 11df2 rectifier, 1a/200 v international rectifier (ir) 13 cr6 byv26c rectifier, 1a/600 v philips 14 cr7 1n5232bct zener diode 5.6 v diodes, inc. 15 c1 ecq-u2a334mv capacitor, film, 0.33 m f/250vac/20% panasonic 16 c2 eck-dgl471mb capacitor, film, 470 pf/250vac/20% panasonic 17 c3 eck-dgl471mb capacitor, film, 470 pf/250vac/20% panasonic 18 c4 eco-s2gp121ca capacitor, electrolytic, 120 m f/400 v panasonic 19 c5 ece-a1efs101 capacitor, electrolytic, 100 m f/25 v panasonic 20 c6 eck-d3a332kbp capacitor, ceramic, 3300 pf/1000 v panasonic 21 c7 ecu-s2a104kba capacitor, ceramic, 0.1 m f/100 v panasonic 22 c8 ecu-s2a333kba capacitor, ceramic, 0.033 m f/100 v panasonic 23 c9 ecu-s2a471kba capacitor, ceramic, 470 pf/100 v panasonic 24 c10 ecu-s2a222kba capacitor, ceramic, 2200 pf/100 v panasonic 25 c11 ece-a1afs471 capacitor, electrolytic, 470 m f/10 v panasonic 26 c12 eca1afq222 capacitor, electrolytic, 2200 m f/10 v panasonic 27 c13 ecu-s2a104kba capacitor, ceramic, 0.1 m f/100 v panasonic 28 c14 ecu-s2a104kba capacitor, ceramic, 0.1 m f/100 v panasonic 29 c15 ece-a1efs471 capacitor, electrolytic, 470 m f/25 v panasonic 30 c16 ecu-s2a471kba capacitor, ceramic, 470 pf/100 v panasonic 31 c17 ece-a1efs101 capacitor, electrolytic, 100 m f/25 v panasonic 32 c18 ecu-s2a104kba capacitor, ceramic, 0.1 m f/100 v panasonic 33 c19 ece-a1efs471 capacitor, electrolytic, 470 m f/25 v panasonic 34 c20 ece-a1efs101 capacitor, electrolytic, 100 m f/25 v panasonic 35 c21 ecu-s2a104kba capacitor, ceramic, 0.1 m f/100 v panasonic 36 c22 eck-dgl471mb capacitor, film, 470 pf/250vac panasonic 37 c23 eck-dgl471mb capacitor, film, 470 pf/250vac panasonic 38 c24 ecu-s2a104kba capacitor, ceramic, 0.1 m f/100 v panasonic 39 c25 ecu-s2a104kba capacitor, ceramic, 0.1 m f/100 v panasonic 40 c26 ecu-s2a471kba capacitor, ceramic, 470 pf/100 v panasonic 41 c27 ecu-s1j102jcb capacitor, ceramic, 1000 pf/63 v panasonic
til5942, TIL5942A current-mode-pwm controller with optoisolated voltage reference and error amplifier soes040 october 1997 16 post office box 655303 ? dallas, texas 75265 table 1. bill of materials for til5942 and TIL5942A off-line power-supply (continued) item no. ref des part number description vendor 42 c28 ecu-s1j105meb capacitor, ceramic, 1 m f/63 v panasonic 43 c29 ecu-s1j102jcb capacitor, ceramic, 1000 pf/100 v panasonic 44 r1 resistor, mf, 680 k w , 1/2 w, 5% 45 r2 resistor, mf, 750 k w , 2 w, 5% 46 r3 resistor, mf, 4.7 w , 1/4 w, 5% 47 r4 resistor, mf, 150 w , 1/4 w, 5% 48 r5 resistor, mf, 0.62 w , 1/4 w, 5% 49 r6 resistor, mf, 10 k w , 2 w, 5% 50 r7 resistor, mf, 47 w , 1/4 w, 5% 51 r8 resistor, mf, 100 w , 1/4 w, 5% 52 r9 resistor, mf, 100 w , 1/4 w, 5% 53 r10 resistor, mf, 12 k w , 1/4 w, 5% 54 r11 resistor, mf, 100 w , 1/4 w, 5% 55 r12 resistor, mf, 2.4 k w , 1/4 w, 5% 56 r13 3306f-502-nd 5 k w , 1/4 w, pot bourns 57 r14 resistor, mf, 100 w , 1 w, 5% 58 r15 resistor, mf, 100 w , 1/4 w, 5% 59 r16 resistor, mf, 150 k w , 1/4 w, 5% 60 r17 resistor, mf, 1 k w , 1/4 w, 5% 61 r18 resistor, mf, 4.7 k w , 2 w, 5% 62 t1 cyx01-13940-x4 transformer, turns ratio colitronics 63 l1 0571-0203-01 common mode filter bel 64 l2 pcv-0-0050-10 inductor, choke coilcraft 65 l3 pcv-0-0050-10 inductor, choke coilcraft 66 f1 fuse, 3ag bel 67 fh1 f052-nd fuseclip 68 fh1 f052-nd fuseclip 69 hs1 pf430 heat sink q1 thermalloy 70 hs4 pf430 heat sink cr3 thermalloy 71 p1 42r05-3143-150 connector, input power dynamics 72 p2 wm4403nd connector, output waldom 73 jmp1 strap 74 jmp2 strap 75 jmp3 strap 76 pwb pc board
til5942, TIL5942A current-mode-pwm controller with optoisolated voltage reference and error amplifier soes040 october 1997 17 post office box 655303 ? dallas, texas 75265 mechanical data nfd (r-pdso-g14) plastic small-outline package gage plane 0.410 (10,41) 0.390 (9,91) 0.010 (0,25) nom 0.039 (0,99) 0.029 (0,74) 0.010 (0,25) seating plane 4073330/a 08/97 9 0.050 (1,27) 8 0.180 (4,57) 0.160 (4,06) 0.790 (20,07) 0.782 (19,86) 16 1 0.020 (0,51) min 0.146 (3,71) 0.154 (3,91) 0.260 (6,60) 0.240 (6,10) 0.004 (0,10) m 0.010 (0,25) 0.100 (2,54) 0 8 notes: a. all linear dimensions are in inches (millimeters). b. this drawing is subject to change without notice.
til5942, TIL5942A current-mode-pwm controller with optoisolated voltage reference and error amplifier soes040 october 1997 18 post office box 655303 ? dallas, texas 75265 mechanical data nfc (r-pdip-t14) plastic dual-in-line package seating plane 0.180 (4,57) 0.160 (4,06) 0.410 (10,41) 0.390 (9,91) 0.010 (0,25) nom 4110451/a 08/97 9 8 0.782 (19,86) 0.020 (0,51) min 0.058 (1,47) 0.042 (1,07) 0.790 (20,07) 16 1 0.146 (3,71) 0.154 (3,91) 0.016 (0,41) 0.024 (0,61) 0.260 (6,60) 0.240 (6,10) 0.125 (3,18) nom m 0.010 (0,25) 0.100 (2,54) notes: a. all linear dimensions are in inches (millimeters). b. this drawing is subject to change without notice.
important notice texas instruments (ti) reserves the right to make changes to its products or to discontinue any semiconductor product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied on is current. ti warrants performance of its semiconductor products and related software to the specifications applicable at the time of sale in accordance with ti's standard warranty. testing and other quality control techniques are utilized to the extent ti deems necessary to support this warranty. specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. certain applications using semiconductor products may involve potential risks of death, personal injury, or severe property or environmental damage (acritical applicationso). ti semiconductor products are not designed, intended, authorized, or warranted to be suitable for use in life-support applications, devices or systems or other critical applications. inclusion of ti products in such applications is understood to be fully at the risk of the customer. use of ti products in such applications requires the written approval of an appropriate ti officer. questions concerning potential risk applications should be directed to ti through a local sc sales office. in order to minimize risks associated with the customer's applications, adequate design and operating safeguards should be provided by the customer to minimize inherent or procedural hazards. ti assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or services described herein. nor does ti warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of ti covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. copyright ? 1997, texas instruments incorporated

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