POWER OPERATIONAL AMPLIFIERS PA03 • P03A HTTP://WWW.APEXMICROTECH.COM M I C R O T E C H N O L O G Y (800) 546-APEX (800) 546-2739 FEATURES • MO-127 COPPER POWER DIP™ PACKAGE • HIGH INTERNAL POWER DISSIPATION — 500 watts • HIGH VOLTAGE OPERATION — ±75V • VERY HIGH CURRENT — ±30 amps • INTERNAL SOA PROTECTION • OUTPUT SWINGS CLOSE TO SUPPLY RAILS • EXTERNAL SHUTDOWN CONTROL APPLICATIONS • • • • TYPICAL APPLICATION LINEAR AND ROTARY MOTOR DRIVES YOKE/MAGNETIC FIELD DEFLECTION PROGRAMMABLE POWER SUPPLIES to ±68V TRANSDUCER/AUDIO TO 1000W RBAL DESCRIPTION The super power PA03 advances the state of the art in both brute force power and self protection against abnormal operating conditions. Its features start with a copper dip package developed by Apex to extend power capabilities well beyond those attainable with the familiar TO-3 package. The increased pin count of the new package provides additional control features, while the superior thermal conductivity of copper allows substantially higher power ratings. The PA03 incorporates innovative current limiting circuits limiting internal power dissipation to a curve approximating the safe operating area of the power transistors. The internal current limit of 35A is supplemented with thermal sensing which reduces the current limit as the substrate temperature rises. Furthermore, a subcircuit monitors actual junction temperatures and with a response time of less than ten milliseconds reduces the current limit further to keep the junction temperature at 175°C. The PA03 also features a laser trimmed high performance FET input stage providing superior DC accuracies both initially and over the full temperature range. EQUIVALENT SCHEMATIC POSITION FEEDBACK +VS 8 11 12 OBJECT TOOL + +S +5V SHUT DOWN 0/10V DAC R1 DESIRED POSITION –S PA03 – –VS C1 R2 The PA03 output power stages contain fast reverse recovery diodes for sustained high energy flyback protection. This hybrid integrated circuit utilizes thick film resistors, ceramic capacitors and silicon semiconductors to maximize reliability, minimize size and give top performance. Ultrasonically bonded aluminum wires provide reliable interconnections at all operating temperatures. The MO-127 Copper, 12-pin Power Dip™ package (see Package Outlines), is hermetically sealed and isolated from the internal circuits. Insulating washers are not recommended. IMPORTANT: Observe mounting precautions. +V BAL Q4 Q1 BAL D1 Q3 Q2 Q12 Q5 Q17 1 2 – Q20 A Q20 B + 4 +SHUT Q18 DOWN Q14 COMP 10 Q22 Q19 Q29 Q31 Q30 Q32 OUT 6 – Q24 3 –SHUT DOWN D2 + 7 Q16 9 D4 5 Q9 Q6 Q7 Q26 D3 Q34 –V APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL [email protected] ABSOLUTE MAXIMUM RATINGS SPECIFICATIONS PA03 • PA03A ABSOLUTE MAXIMUM RATINGS SUPPLY VOLTAGE, +VS to –VS OUTPUT CURRENT, within SOA POWER DISSIPATION, internal INPUT VOLTAGE, differential INPUT VOLTAGE, common mode TEMPERATURE, pin solder-10s TEMPERATURE, junction1 TEMPERATURE RANGE, storage OPERATING TEMP. RANGE, case SHUTDOWN VOLTAGE, differential SHUTDOWN VOLTAGE, common mode EXTERNAL CONNECTIONS 150V Internally limited 500W ±25V ±VS 300°C 175°C –65 to +150°C –55 to +125°C ±5V ±VS –INPUT +INPUT –SHUT DN +SHUT DN –SUPPLY –OUTPUT 1 2 3 4 5 6 12 11 TOP VIEW 10 9 8 7 † SPECIFICATIONS PA03 TEST CONDITIONS 2 PARAMETER BALANCE CONTROL BALANCE CONTROL PHASE COMP. PHASE COMP. +SUPPLY +OUTPUT MIN Pins 6 & 7 must be connected together. If unused, tie Pins 11 & 12 to +SUPPLY. † IMPORTANT: OBSERVE MOUNTING PRECAUTIONS. REVERSE INSERTION WILL DESTROY UNIT. PA03A TYP MAX ± .5 10 8 20 5 .01 2.5 1011 6 ±2 30 MIN TYP MAX UNITS ± .25 5 * 10 3 * 1.5 * * ± .5 10 mV µV/°C µV/V µV/W pA pA/V pA Ω pF V dB µA V V INPUT OFFSET VOLTAGE, initial OFFSET VOLTAGE, vs. temperature OFFSET VOLTAGE, vs. supply OFFSET VOLTAGE, vs. power BIAS CURRENT, initial BIAS CURRENT, vs. supply OFFSET CURRENT, initial INPUT IMPEDANCE, DC INPUT CAPACITANCE COMMON MODE VOLTAGE RANGE3 COMMON MODE REJECTION, DC SHUTDOWN CURRENT4 SHUTDOWN VOLTAGE SHUTDOWN VOLTAGE TC = 25°C Full temperature range TC = 25°C Full temperature range TC = 25°C TC = 25°C TC = 25°C TC = 25°C TC = 25°C Full temperature range Full temp. range, VCM = ±20V Full temperature range Full temp. range, amp enabled Full temp. range, amp disabled ± VS –10V 86 50 50 * * 108 100 10 * * .85 3.5 10 * * GAIN OPEN LOOP GAIN at 10Hz GAIN BANDWIDTH PRODUCT at 1MHz POWER BANDWIDTH PHASE MARGIN Full temp. range, full load TC = 25°C, full load TC = 25°C, IO = 15A, VO = 88VPP Full temp. range, CC = 1.8nF 92 102 1 30 65 * * * * * dB MHz kHz ° ± VS –7 ± VS –5 ± VS –4 30 6.2 4.2 3.5 * * * * * * * V V V A µs V/µs nF µs µs OUTPUT VOLTAGE SWING3 VOLTAGE SWING3 VOLTAGE SWING3 CURRENT, peak SETTLING TIME to .1% SLEW RATE CAPACITIVE LOAD SHUTDOWN DELAY TC = 25°C, IO = 30A Full temp. range, IO = 12A Full temp. range, IO = 146mA TC = 25°C TC = 25°C, 10V step TC = 25°C, CC - open Full temp. range, AV = 1 TC = –25°C, disable TC = –25°C, operate 8 8 * * 2 * 10 20 * * POWER SUPPLY VOLTAGE CURRENT, quiescent6 CURRENT, disable mode Full temperature range TC = 25°C Full temperature range ± 15 ± 50 125 25 ± 75 300 40 .22 .25 14 .28 .3 * * * * * * * V mA mA * * * * * °C/W °C/W °C/W °C °C THERMAL RESISTANCE, AC junction to case5 RESISTANCE, DC junction to case RESISTANCE, junction to ambient TEMPERATURE, junction TEMPERATURE RANGE, case NOTES: * 1. 2. 3. 4. 5. 6. CAUTION Full temp. range, F>60Hz Full temp. range, F<60Hz Full temperature range Sustained operation Meets full range specification – 25 150 85 * * * The specification of PA03A is identical to the specification for PA03 in applicable column to the left. Long term operation at the maximum junction temperature will result in reduced product life. Derate power dissipation to achieve high MTTF. The power supply voltage for all specifications is the TYP rating unless noted as a test condition. +VS and –VS denote the positive and negative supply rail respectively. Total VS is measured from +VS to –VS. Rating applies if both shutdown inputs are least 1V inside supply rails. If one of the shutdown inputs is tied to a supply rail, the current in that pin may increase to 2.4mA. Rating applies if the output current alternates between both output transistors at a rate faster than 60Hz. The PA03 must be used with a heatsink or the quiescent power may drive the unit into thermal shutdown. 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 850°C to avoid generating toxic fumes. APEX MICROTECHNOLOGY CORPORATION • 5980 NORTH SHANNON ROAD • TUCSON, ARIZONA 85741 • USA • APPLICATIONS HOTLINE: 1 (800) 546-2739 PA03 • PA03A 200 100 0 40 80 120 160 200 CASE TEMPERATURE, TC (°C) 16 4 1 .25 .06 –15 PHASE, Φ (°) = CC N PE O –90 –120 –150 pF 00 18 0 –20 –180 –210 1 1 10 100 1K 10K .1M 1M 10M FREQUENCY, F (Hz) COMMON MODE REJECTION 7.5 100 5.0 80 2.5 VOLTS 120 60 40 –2.5 20 –5.0 0 –7.5 1 1.0 100 1K 10K .1M 1M FREQUENCY, F (Hz) HARMONIC DISTORTION 100 1K 10K .1M 1M 10M FREQUENCY, F (Hz) PULSE RESPONSE VIN = ±.5V, AV = 10 RL =.5Ω 0 5 10 15 20 TIME, t (µS) 25 30 3 =2 TC 2 1 0 °C 25 =1 5 20 25 10 15 OUTPUT CURRENT, IO (A) 30 INPUT NOISE 20 10 6 4 2 10 100 10K 1K FREQUENCY, F (Hz) .1M N 20 10 pF 30 PE =O 50 40 pF 40 60 80 100 120 140 TOTAL SUPPLY VOLTAGE, VS (V) 100 CC 5°C TC = 8 .6 .4 °C 5°C TC 70 .8 TC °C 25 =– 4 =– 150 5°C =2 TC 0 80 100 300 1K 3K 10K 30K FREQUENCY, F (Hz) TC 5 =4 .01 TC 1.0 55 =1 .03 °C 25 =1 6 POWER RESPONSE QUIESCENT CURRENT 1.2 7 CC 0.1 .003 30 0 25 50 75 100 125 –50 –25 0 CASE TEMPERATURE, TC (°C) 1.4 VS = ±50V AV = 10 PO = 200W RL = 4 Ω 10 CC DISTORTION, (%) 0.3 10 10 0 NORMALIZED, IQ (X) COMMON MODE REJECTION, CMR (dB) F 0p –60 N 80 PE =O = 20 =1 80 CC = 470pF 20 OUTPUT VOLTAGE SWING CC –30 CC 100 60 30 PHASE RESPONSE 0 CC OPEN LOOP GAIN, A (dB) SMALL SIGNAL RESPONSE 120 40 40 5 45 65 85 105 25 CASE TEMPERATURE, TC (°C) OUTPUT VOLTAGE, VO (VPP) 0 64 VOLTAGE DROP FROM SUPPLY (V) 300 CURRENT LIMIT 50 INPUT NOISE VOLTAGE, VN (nV/ √ Hz) 400 BIAS CURRENT 256 CURRENT LIMIT, I LIM (A) POWER DERATING 500 NORMALIZED BIAS CURRENT, I B (X) INTERNAL POWER DISSIPATION, P(W) TYPICAL PERFORMANCE GRAPHS 3K 5K 10K 50K 100K FREQUENCY, F (Hz) 300K APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL [email protected] OPERATING CONSIDERATIONS PA03 • PA03A GENERAL OUTPUT STAGE SHUTDOWN Please read the “General Operating Considerations” section, which covers stability, supplies, heatsinking, mounting, current limit, SOA interpretation, and specification interpretation. Additional information can be found in the application notes. For information on the package outline, heatsinks, and mounting hardware, consult the “Accessory and Package Mechanical Data” section of the handbook. The entire power stage of the PA03 may be disabled using one of the circuits shown in Figure 1. There are many applications for this function. One is a load protection based on power delivered to the load or thermal rise. Another one is conservation of power when using batteries. The control voltage requirements accommodate a wide variety logic drivers. 1. CMOS operating at +5V can drive the control pins directly. 2. CMOS operating at greater than 5V supplies need a voltage divider. 3. TTL logic needs a pull up resistor to +5V to provide a swing to the fully disabled voltage (3.5V). When not using the shutdown feature, connect both pins 3 and 4 to common. MOUNTING PRECAUTIONS The PA03 copper base is very soft and easily bent. Do not put any stress on the mounting ears of this package. This calls for caution when pushing the amplifier into certain types of packaging foam and particularly when inserting the device into a socket. Insert the amplifier into the socket only by pushing on the perimeter of the package lid. Pushing the unit into the socket by applying pressure to the mounting tabs will bend the base due to the high insertion force required. The base will then not contact the heatsink evenly resulting in very poor heat transfer. To remove a unit from a socket, pry the socket away from the heatsink so that the heatsink will support the amplifier base evenly. Recommended mounting torque is 8–10 in.-lbs. (.9–1.13 N•m). PHASE COMPENSATION At low gain settings an external compensation capacitor is required to insure stability. In addition to the resistive feedback network, roll off or integrating capacitors must also be considered. A frequency of 1 MHz is most appropriate to calculate gain. Operation at gains below 10, without the external compensation capacitor opens the possibility of oscillations near output saturation regions when under load, the improper operation of the thermal shutdown circuit. This can result in amplifier destruction. SAFE OPERATING AREA (SOA) At gains of 10 or more: Due to the internal (non-adjustable) current limit of the PA03, worst case power dissipation calculations must assume current capability of 46 amps. Application specific circuits should be checked against the SOA curve when relying upon current limit for fault protection. 1. No external components are required. 2. Typical slew rate will be 8V/µs. 3. Typical phase margin will be 70°. SAFE OPERATING AREA CURVES ND CO At unity gain: 1. Connect a 1.8nF compensation capacitor between pins 9 and 10. 2. Typical slew rate will be 1.8V/µs. 3. Typical phase margin will be 65°. FIGURE 1a. DIRECT DRIVE OF SHUTDOWN +5V PA03 500Ω 4 Q14 1K * 0 = OPERATE 1 = SHUT DN * NOT REQUIRED WHEN USING CMOS LOGIC 1K 3 500Ω Q22 N OW KD EA BR OUTPUT CURRENT FROM +VS OR –VS (A) 1. Connect a 470pF compensation capacitor between pins 9 and 10. 2. Typical slew rate will be 5V/µs. 3. Typical phase margin will be 45°. SE Second breakdown limitations do apply to the PA03 but are less severe, since junction temperature limiting responds within 10ms. Stress levels shown as being safe for more than 10ms duration 40 will merely CURRENT LIMIT ZONE 30 100 cause thermal TH 1.0 mS ER mS MA shutdown. L 10 m Under norS 10 mal operating dc conditions, ac5 tivation of the thermal shutdown is a sign TC = 25°C that the internal junction 1 temperatures 10 20 50 100 150 have reached SUPPLY TO OUTPUT DIFFERENTIAL VS –VO (V) approximately 175°C. Thermal shutdown is a short term safety feature. If the conditions remain that cause thermal shutdown, the amplifier will oscillate in and out of shutdown, creating peak high power stresses, destroying useful signals, and reducing the reliability of the device. At a gain of 3: BALANCE CONTROL The voltage offset of the PA03 may be externally adjusted to zero. To implement this adjustment install a 100 to 200 ohm potentiometer between pins 11 and 12 and connect the wiper arm to the positive supply. Bypass pins 11 and 12 each with at least a .01µF ceramic capacitor. If the optional adjust provision is not used, connect both pins 11 and 12 to the positive supply. +15V PA03 2R 0 = SHUT DN CMOS 1 = OPERATE 500Ω 4 Q14 1K R FIGURE 1b. HIGH VOLTAGE LOGIC INTERFACE FIGURE 1c. THERMALLY ACTIVATED SHUTDOWN 3 +VS 500Ω Q22 R1 ** ** SELECT SHUTOFF TEMPERATURE SELECT R4 FOR 5V DROP ON R2 R3 360 Ω Q14 R2 4.7K 1K 3 360– 400mV PA03 500Ω 4 500Ω Q22 R4 30K LOAD THERMAL SENSE TRANSISTOR This data sheet has been carefully checked and is believed to be reliable, however, no responsibility is assumed for possible inaccuracies or omissions. All specifications are subject to change without notice. PA03U REV. I FEBRUARY 1998 © 1998 Apex Microtechnology Corp.