PA05

PA05 Power Operational Amplifier RoHS COMPLIANT FEATURES • • • • • • • • High Internal Dissipation — 250 Watts High Voltage, High Current — 100V, 30A High Slew Rate — 100V/µs 4 Wire Current Limit Sensing Low Distortion External Shutdown Control Optional Boost Voltage Inputs Evaluation Kit — see EK45 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 amplifier that extends the performance limits of power amplifiers in slew rate and power bandwidth, while maintaining high current and power dissipation ratings. The PA05 is a highly flexible amplifier. 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 amplifier to operate at a higher voltage than the high current output stage. The amplifier is then biased to achieve close linear swings to the supply rails at high currents for extra efficient operation. External compensation tailors slew rate and bandwidth performance to user needs. A four wire sense technique allows precision current limiting without the need to consider internal or external mΩ parasitic resistance in the output line. The output stage is protected by thermal limiting circuits above junction temperatures of 175°C. www.apexanalog.com © Apex Microtechnology Inc. All rights reserved Sep 2019 PA05U Rev O PA05 Figure 1: Equivalent Schematic SHUTDOWN 12 +VS 8 9 +VB D1 Q1 Q12 Q16 –IN 1 D19 +IN 2 Q13 Q4 4 COMP 3 Q17 Q5 D6 D9 Q10 Q25 D27 D31 OUT 7 D5 Q14 Q18 Q22 D20 Q30 5 Q8 10 ICL Q24 BIAS ICL 11 Q21 Q29 Q33 D4 –VB 6 –VS TYPICAL CONNECTION Figure 2: Typical Connections * * Use 10μF per Amp of output current * 2 PA05U Rev O PA05 PINOUT AND DESCRIPTION TABLE Figure 3: External Connections Pin Number Name Description 1 2 3 -IN +IN RC 4 CC 5 -VB The inverting input. The non-inverting input. Compensation resistor connection. Select value based on Phase Compensation. See applicable section. Compensation capacitor connection. Select value based on Phase Compensation. See applicable section. The negative boost supply rail. Short to -VS if unused. See applicable section. 6 -VS The negative supply rail. 7 OUT The output. Connect this pin to load and to the feedback resistors through RCL. 8 +VS The positive supply rail. 9 +VB The positive boost supply rail. Short to +VSif unused. See applicable section. 10 -CL Connect to the load side of the current limit resistor. Current limit will activate as the voltage across RCL increases. 11 +CL Connect to the OUT side of the current limit resistor. Current limit will activate as the voltage across RCL increases. 12 SD The shutdown activation pin. See applicable section. PA05U Rev O 3 PA05 SPECIFICATIONS Unless otherwise noted: TC = 25°C, CC = 470pF, RC = 120 Ω. DC input specifications are ± value given. Power supply voltage is typical rating. ±VB = ±VS. ABSOLUTE MAXIMUM RATINGS Parameter Supply Voltage, total Symbol Min +Vs to -Vs Max Units 100 V +Vs + 20 V Boost Voltage ±VB Output Current, continuous within SOA IOUT 30 A Power Dissipation, internal PD 250 W Input Voltage, differential VIN (Diff) -20 20 V VCM -VB VB V 350 °C 175 °C -65 +150 °C -55 +125 °C Input Voltage, common mode -Vs - 20 Temperature, pin solder, 10s Temperature, junction 1 Temperature, storage TJ Operating Temperature Range, case Tc 1. 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. CAUTION 4 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 850°C to avoid generating toxic fumes. PA05U Rev O PA05 INPUT Parameter 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 Test Conditions PA05 Min Full temp range Full temp range Input Impedance, DC Input Capacitance Common Mode Voltage Range Full temp range ±VB – 8 Common Mode Rejection, DC Full temp range, VCM = ±20V 90 Input Noise 100 kHz BW, RS = 1 kΩ PA05A Typ Max 5 20 10 30 10 0.01 10 10 50 30 Min 50 50 Typ Max 2 10 * 10 5 * 5 5 30 * 20 20 Units mV µV/°C µV/V µV/W pA pA/V pA 1011 * Ω 13 * pF * 100 * V * dB 10 * µVrms PA05 PA05A GAIN Parameter Test Conditions Min Typ 94 102 Max Max Units Min Typ * * dB 3 * MHz Open Loop, @ 15 Hz Full temp range, CC = 82pF Gain Bandwidth Product RL = 10 Ω Power Bandwidth RL = 4 Ω, VOUT= 80VP-P, AV = –10, CC = 82pF, RC= 120 Ω 400 * kHz Phase Margin Full temp range, CC = 470pF 60 * ° PA05U Rev O 5 PA05 OUTPUT Parameter Test Conditions PA05 Min Typ PA05A Max Min Typ Max Units Voltage Swing IOUT = 20A ±VS–9.5 ±VS–8.7 * * V Voltage Swing VB =Vs + 5V, IOUT = 30A ±VS–5.8 ±VS–5.0 * * V Current, peak 30 Settling Time to 0.1% AV = +1, 10V step, RL = 4 Ω Slew Rate AV = –10, CC = 82pF, RC = 120 Ω 80 Capacitive Load Full temp range, AV = +1 2.2 Resistance IOUT = 0, No load, 2 MHz IOUT = 1A, 2 MHz * 2.5 100 * A * µs * V/µs * nF 5 * Ω 2 * Ω PA05 PA05A POWER SUPPLY Parameter Voltage Current, quiescent, boost supply Current, quiescent, total Current, quiescent, total, shutdown 6 Test Conditions Min Typ Max Min Typ Max Full temp range ±15 ±45 46 90 ±50 56 120 * * * * * * * V mA mA 46 56 * * mA Units PA05U Rev O PA05 THERMAL Parameter Resistance, AC, junction to case 1 Resistance, DC, junction to case Test Conditions PA05 Min Full temp range, F>60 Hz Full temp range, F