apex microtechnology corporation ? telephone (520) 690-8600 ? fax (520) 888-3329 ? orders (520) 690-8601 ? email prodlit@apexmicrotech.com 1 the jedec mo-127 12-pin power dip? package (see package outlines) is hermetically sealed and isolated from the internal circuits. the use of compressible thermal washers and/or improper mounting torque will void the product warranty. please see general operating considerations. typical application the high power bandwidth of the PA05 allows driving sonar transducers via a resonant circuit including the transducer and a matching transformer. the load circuit appears resis - tive to the PA05. control logic turns off the ampli?er's output during shutdown. external connections phase compensation gain c c r c 1 470pf 120 >3 220pf 120 10 82pf 120 c c rated for full supply voltage *see boost operation paragraph. features ? high internal dissipation 250 watts ? high voltage, high current 100v, 30a ? high slew rate 100v/ s ? 4 wire current limit sensing ? low distortion ? external shutdown control ? optional boost voltage inputs ? evaluation kit see ek09 applications ? linear and rotary motor drives ? sonar transducer driver ? yoke/magnetic field excitation ? programmable power supplies to 45v ? audio up to 500w description the PA05 is a high voltage mosfet power operational ampli?er that extends the performance limits of power ampli - ?ers in slew rate and power bandwidth, while maintaining high current and power dissipation ratings. the PA05 is a highly ?exible ampli?er. the shutdown control feature allows the output stage to be turned off for standby operation or load protection during fault conditions. boost voltage inputs allow the small signal portion of the ampli?er to operate at a higher voltage than the high current output stage. the ampli?er is then biased to achieve close linear swings to the supply rails at high currents for extra ef?cient operation. external compensation tailors slew rate and bandwidth per - formance to user needs. a four wire sense technique allows precision current limiting without the need to consider internal or external milliohm parasitic resistance in the output line. the output stage is protected by thermal limiting circuits above junction temperatures of 175c. equivalent schematic ?? ? ? ? ? ?? ???????? ?? ????? ??? ?? ????? ??? ??? ? ??? ? ??? ??? ??? ???? ? ? ? ???? ? ? ?? ??? ??? ?? ?? ?? ?? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ?? ?? ?? ?? ??? ??? ??? ??? ?? ??????? ????? ?????? ????? ????? ? ? ? ? ? ?? ? ?? ?? ? ?? ????? ??????????? ???? ? ??? ???? ?????? ?????? ???????? ????????????? ????????????? ? ? ? ? ? ? ? ? ? ? ?? ?? ?? ? ? ? ??? ???? ???? ?? ????? ??????? ?? ????? ??????? ?????? ? ? ???? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ???????????????????????????? ???????????? 12-pin power dip package style cr
apex microtechnology corporation ? 5980 north shannon road ? tucson, arizona 85741 ? usa ? applications hotline: 1 (800) 546-2739 2 absolute maximum ratings specifications absolute maximum ratings supply voltage, +v s to Cv s 100v boost voltage supply voltage +20v output current, continuous within soa 30a power dissipation, internal 250w input voltage, differential 20v input voltage, common mode v b temperature, pin solder - 10s 300c temperature, junction 2 175c temperature, storage C65 to +150c operating temperature range, case C55 to +125c PA05 ? PA05a specifications the PA05 is constructed from mosfet transistors. esd handling procedures must be observed. the internal substrate contains beryllia (beo). do not break the seal. if accidentally broken, do not crush, machine, or subject to temperatures in excess of 850c to avoid generating toxic fumes. caution notes: * the speci?cation of PA05a is identical to the speci? cation for PA05 in applicable column to the left. 1. unless otherwise noted: t c = 25c, c c = 470pf, r c = 120 ohms. dc input speci?cations are value given. power supply volt - age is typical rating. v boost = v s . 2. long term operation at the maximum junction temperature will result in reduced product life. derate internal power dissipation to achieve high mttf. for guidance, refer to the heatsink data sheet. 3. rating applies if the output current alternates between both output transistors at a rate faster than 60 hz. 4. the PA05 must be used with a heatsink or the quiescent power may drive the unit to junction temperatures higher than 150c. PA05 PA05a parameter test conditions 1 min typ max min typ max units input offset voltage, initial 5 10 2 5 mv offset voltage, vs. temperature full temperature range 20 50 10 30 v/c offset voltage, vs. supply 10 30 * * v/v offset voltage, vs. power full temperature range 30 10 v/w bias current, initial 10 50 5 20 pa bias current, vs. supply .01 * pa/v offset current, initial 10 50 5 20 pa input impedance, dc 10 11 * input capacitance 13 * pf common mode voltage range full temperature range v b C8 * v common mode rejection, dc full temp. range, v cm = 20v 90 100 * * db input noise 100khz bw, r s = 1k 10 * vrms gain open loop, @ 15hz full temperature range, c c = 82pf 94 102 * * db gain bandwidth product r l = 10 3 * mhz power bandwidth r l = 4, v o = 80v p-p , a v = C10 400 * khz c c = 82pf, r c = 120 phase margin full temperature range, c c = 470pf 60 * output voltage swing i o = 20a v s C9.5 v s C8.7 * * v voltage swing v boost = vs + 5v, i o = 30a v s C5.8 v s C5.0 * * v current, peak 30 * a settling time to .1% a v = +1, 10v step, r l = 4 2.5 * s slew rate a v = C10, c c = 82pf, r c = 120 80 100 * v/s capacitive load full temperature range, a v = +1 2.2 * nf resistance i o = 0, no load, 2mhz 5 * i o = 1a, 2mhz 2 * power supply voltage full temperature range 15 45 50 * * * v current, quiescent, boost supply 46 56 * * ma current, quiescent, total 90 120 * * ma current, quiescent, total, shutdown 46 56 * * ma thermal resistance, ac, junction to case 3 full temperature range, f>60hz .3 .4 * * c/w resistance, dc, junction to case full temperature range, f<60hz .4 .5 * * c/w resistance, junction to air 4 full temperature range 12 * c/w temperature range, case meets full range speci?cation C25 85 * * c
apex microtechnology corporation ? telephone (520) 690-8600 ? fax (520) 888-3329 ? orders (520) 690-8601 ? email prodlit@apexmicrotech.com 3 typical performance graphs PA05 ? PA05a ? ?? ?? ?? ??? ??? ??? ??????????????????? ? ????? ? ??? ??? ?????????????? ????????????????????????????????? ??? ?? ??? ???????????????? ? ?????????????????????? ???????????????????????????????? ??? ? ?? ??? ??????????????????? ? ????? ????????????????????????????? ??? ??? ????????????????? ? ?? ?? ??? ????????????????????? ?????????????????????? ?? ?? ????????????????? ???? ?????????????? ? ? ?? ?? ? ??????????????????????????? ? ? ?? ? ???? ?? ??? ??? ????????????????? ???? ??? ?? ??????????????????? ??????????????????? ???? ??? ?? ?? ??? ??????????????????????? ? ???? ?? ?? ??? ????????????????? ??????????????????????????????? ? ???? ??? ??? ??? ??? ?? ????????????????? ? ?????????????? ????????????????? ? ??? ??? ? ?? ????????????????? ? ????????????????????? ??????????????????????????????? ?? ?? ??? ?? ??? ?? ? ?? ?? ???????????? ?? ? ?????????????? ????????????????? ? ???? ?? ? ?? ??? ?? ?? ??? ?? ????????????? ?? ?? ?? ?? ??? ???? ?? ??? ??? ???????????????????? ?? ?? ?? ?? ???? ?? ?? ??? ???? ?? ?? ?? ?? ?? ??? ???????????? ??? ??? ?? ?? ??? ???? ?? ???? ???? ??? ??? ? ? ? ? ?? ?? ????????????????? ? ???? ??? ???? ???? ??? ? ??? ? ? ????? ??? ?? ??? ?? ?? ??? ??? ??? ??? ???? ??? ? ? ????? ? ? ????? ? ? ?????????? ? ??????? ? ? ?????? ? ? ???????? ? ? ??????? ? ? ????? ? ? ??????? ?? ?? ?? ? ? ????? ? ? ??????? ? ? ??????? ? ? ???????? ? ? ???????? ? ? ???????? ? ? ???????? ? ? ??????? ? ? ?? ?? ?? ?? ??? ? ? ??????? ? ? ???????? ? ? ???????? ? ????? ???? ? ? ????? ???? ? ????? ?? ?? ???? ?? ?? ?? ?? ????????????????????????????? ? ????? ??? ??? ??? ??? ??? ?? ??? ?????????????????? ??????????????????? ? ? ??????? ? ? ???????? ? ? ???????? ? ? ????? ? ? ???????
apex microtechnology corporation ? 5980 north shannon road ? tucson, arizona 85741 ? usa ? applications hotline: 1 (800) 546-2739 4 operating considerations PA05 ? PA05a general please read application note 1 "general operating con - siderations" which covers stability, supplies, heat sinking, mounting, current limit, soa interpretation, and speci?cation interpretation. visit www.apexmicrotech.com for design tools that help automate tasks such as calculations for stability, internal power dissipation, current limit; heat sink selection; apexs complete application notes library; technical seminar workbook; and evaluation kits. current limit the two current limit sense lines are to be connected directly across the current limit sense resistor. for the current limit to work correctly, pin 11 must be connected to the amplifier out - put side and pin 10 connected to the load side of the current limit resistor, r cl , as shown in figure 1. this connection will bypass any parasitic resistances, r p formed by sockets and solder joints as well as internal ampli?er losses. the current limiting resistor may not be placed anywhere in the output circuit except where shown in figure 1. if current limiting is not used, pins 10 and 11 must be tied to pin 7. the value of the current limit resistor can be calculated as follows: safe operating area (soa) the mosfet output stage of this power operational ampli - ?er has two distinct limitations: 1. the current handling capability of the mosfet geometry and the wire bonds. 2. the junction temperature of the output mosfets. note: the output stage is protected against transient ?y - back. however, for protection against sustained, high energy ?yback, external fast-recovery diodes should be used. the output stage thermal protection circuit engages when junction temperatures reach approximately 175c. if the con - dition remains that caused the shutdown, the ampli?er may oscillate in and out of shutdown, creating high peak power stresses reducing the reliability of the device. shutdown operation to disable the output stage, pin 12 is connected to ground via relay contacts or via an electronic switch. the switching device must be capable of sinking 2ma to complete shutdown and capable of standing off the supply voltage +v s . see figure 2 for suggested circuits. from an internal circuitry standpoint, shutdown is just a special case of current limit where the allowed output current is zero. as with current limit, however, a small current does ?ow in the output during shutdown. a load impedance of 100 ohms or less is required to insure the output transistors are turned off. note that even though the output transistors are off the output pin is not open circuited because of the shutdown operating current. boost operation with the v boost feature, the small signal stages of the ampli - ?er are operated at higher supply voltages than the ampli?ers high current output stage. +v boost (pin 9), and Cv boost (pin 5) are connected to the small signal circuitry of the ampli?er. +v s (pin 8) and Cv s (pin 6) are connected to the high current output stage. an additional 5v on the v boost pins is suf?cient to allow the small signal stages to drive the output transistors into saturation and improve the output voltage swing for extra ef?cient operation when required. when close swings to the supply rails is not required the +v boost and +v s pins must be strapped together as well as the Cv boost and Cv s pins. the boost voltage pins must not be at a voltage lower than the v s pins. compensation the external compensation components c c and r c are con - nected to pins 3 and 4. unity gain stability can be achieved at any compensation capacitance greater than 470 pf with at least 60 degrees of phase margin. at higher gains, more phase shift can be tolerated in most designs and the compensation capacitance can accordingly be reduced, resulting in higher bandwidth and slew rate. use the typical operating curves as a guide to select c c and r c for the application. ? ????????????????????????????????? ?????????????????? ? ? ?? ?? ??? ?? ?? ?? ??? ??? ? ? ? ?? ?? ?? ????? ? ???????? ????? ? ??????? ????? ? ??????? ????????? ? ? ?? ?? ?? ??? ? ????? ??????? ?? ? ? ? ? ?? ?? ? ?? ???? ? ? ? ? ?? ?? ????? ? ? ? ???????????????????????? ?????? ?? ???????? ???? ?? ????????????????????????????? ?? ?? ???????? ?????? ? ? this data sheet has been carefully checked and is believed to be reliable, however, no responsibility is assumed for possible inaccuracies or omissions. all speci?cations are subject to change without notice. PA05u rev h august 2005 ? 2005 apex microtechnology corp.
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