PA52

PA52 • PA52A Power Operational Amplifiers RoHS COMPLIANT FEATURES • • • • High Internal Dissipation — 400W High Current — 40A Continuous, 80A Peak High Slew Rate — 50V/µs Optional Boost Voltage Inputs APPLICATIONS • • • • Semi-conductor Testing Brushless DC Motor Drive Voltage Controlled Current Source Electromagnetic Driver DESCRIPTION The PA52 is a 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. 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. 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 Application Note 1, “General Operating Considerations”. www.apexanalog.com © Apex Microtechnology Inc. All rights reserved Jul 2019 PA52U Rev K PA52 • PA52A Figure 1: Equivalent Schematic TYPICAL CONNECTION Figure 2: Typical Connection 2 PA52U Rev K PA52 • PA52A PINOUT AND DESCRIPTION TABLE Figure 3: External Connections Pin Number Name Description 1 2 3, 4 -IN +IN -VS 5, 6 -OUT 7, 8 +OUT 9, 10 11 12 +VS +VB -VB The inverting input. The non-inverting input. The negative supply rail. Pins 3 and 4 are internally connected. The negative output. Pins 5 and 6 are not internally connected. Short pins 5, 6, 7, and 8. The positive output. Pins 7 and 8 are not internally connected. Short pins 5, 6, 7, and 8. The positive supply rail. Pins 9 and 10 are internally connected. The positive boost supply rail. Short to +VS if unused. See applicable section. The negative boost supply rail. Short to -VS if unused. See applicable section. PA52U Rev K 3 PA52 • PA52A SPECIFICATIONS Unless otherwise noted: TC = 25°C, DC input specifications are ± value given. Power supply voltage is typical rating. ±VB = ±VS. ABSOLUTE MAXIMUM RATINGS Parameter Supply Voltage, +Vs To -Vs Symbol Min +Vs to -Vs Boost Voltage, +VB To -VB Max Units 200 V 230 V Output Current, within SOA IOUT 80 A Power Dissipation, internal PD 400 W Input Voltage, differential VIN (Diff) -20 20 V VCM -VB +VB V 350 °C 150 °C -65 +150 °C -55 +125 °C Input Voltage, common mode 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 PA52 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. PA52U Rev K PA52 • PA52A INPUT Parameter Offset Voltage, initial Offset Voltage vs. temperature Offset Voltage vs. supply Test Conditions PA52 Min Full temp range Bias Current, initial Bias Current vs. supply PA52A Typ Max 5 20 10 10 Min Max 10 50 30 2 * * 5 * * mV µV/°C µV/V 50 * * pA 0.01 Offset Current, initial 10 Input Impedance, DC 1011 13 Input Capacitance Common Mode Voltage Range Full temp range -VB +12 +VB -14 Common Mode Rejection, DC Full temp range, VCM= ±20V 90 Input Noise 100 kHz BW, RS=1 kΩ Units Typ * 50 * pA/V * pA * Ω * pF * V 100 * 10 * PA52 PA52A * dB µVrms GAIN Parameter Open Loop, @ 15 Hz Gain Bandwidth Product Power Bandwidth PA52U Rev K Test Conditions Full temp range RL=10 Ω RL = 4 Ω, VOUT=180VP-P, AV= -10 Full temp range Min Typ 94 102 Max Max Units Min Typ * * dB 3 * MHz 90 * kHz 5 PA52 • PA52A OUTPUT Parameter Test Conditions PA52 Min Typ Voltage Swing IOUT = 40A ±VS±9.5 ±VS±8.0 Voltage Swing, PA52 ±VB = ±VS±10V, IOUT=40A ±VS±5.8 ±VS±4.0 Voltage Swing, PA52A ±VB = ±VS±10V, IOUT=50A Current, peak Settling Time to 0.1% 3ms 10% Duty Cycle AV = -10, 10V Step, RL=4 Ω Slew Rate AV=-10 Resistance IOUT=0, No Load, 2 MHz PA52A Max Min Typ * * Max Units V V ±VS±5.8 ±VS±5.0 80 V * 1 A * 50 µs * V/µs 2.5 * PA52 PA52A Ω POWER SUPPLY Parameter Test Conditions Min Voltage, ±VB Full temp range +14,-12 Voltage, ±VS Full temp range Max Min Typ Max ±30 ±115 * * * V ±100 * * V * * mA mA ±3 Current, quiescent, boost supply Current, quiescent, total Units Typ 26 30 32 36 * * THERMAL Parameter Resistance, AC, junction to case 1 Resistance, DC, junction to case Resistance, junction to air Temperature Range, case Test Conditions Full temp range, F > 60 Hz Full temp range, F > 60 Hz Full temp range Meets full range specification PA52 Min PA52A Typ Max 0.2 0.25 Min Max 0.25 * * °C/W 0.31 * * °C/W 12 -25 Units Typ * 85 * °C/W * °C 1. Rating applies if the output current alternates between both output transistors at a rate faster than 60 Hz. Note: *The specification of PA52A is identical to the specification for PA52 in applicable column to the left 6 PA52U Rev K PA52 • PA52A TYPICAL PERFORMANCE GRAPHS Figure 4: Power Derating Figure 5: Power Supply Rejection 100 WŽǁĞƌ^ƵƉƉůLJZĞũĞĐƟŽŶ͕W^Z;ĚͿ /ŶƚĞƌŶĂůWŽǁĞƌŝƐƐŝƉĂƟŽŶ͕W;tͿ 400 300 T = TC 200 100 0 0 25 50 75 80 60 40 20 0 10 100 100 Temperature, TC (°C) 10k 100k 1M 10M Frequency, F (Hz) Figure 6: Small Signal Gain Figure 7: Small Signal Phase 120 0 RLсϰɏ Open Loop Phase, ˇ;ΣͿ Open Loop Gain Response, AOL (dB) 1k 80 40 0 10 100 1k 10k 100k 1M 10M Frequency, F (Hz) PA52U Rev K -90 -135 -180 RLсϰɏ 1 -45 1 10 100 1K 10K 100k 1M 10M Frequency, F (Hz) 7 PA52 • PA52A Figure 10: Power Response 200 10 Output Voltage, VOUT (VP-P) ѐsŽůƚĂŐĞƌŽƉ&ƌŽŵ^ƵƉƉůLJ͕s^- sOUT (sͿ Figure 8: Output Voltage Swing 8 s ^ s Bс 6 4 Ϭs нϭ сs ^ 2 100 sB 10 0 0 10 20 30 40 100k 50 1M Frequency, F (Hz) Output Current, IOUT (A) Figure 9: Figure 11: Common Mode Rejection Figure 12: Quiescent Current 1.18 Normalized Quiescent Current, IQ (X) ŽŵŵŽŶDŽĚĞZĞũĞĐƟŽŶ͕DZ;ĚͿ 100 80 60 40 20 0 10 1.14 1.12 1.10 1.08 1.06 1.04 1.02 1 100 1k 10k Frequency, F (Hz) 8 1.16 100k 1M 0 50 100 150 200 Total Supply Voltage, VS (V) PA52U Rev K PA52 • PA52A SAFE OPERATING AREA (SOA) Figure 13: SOA KƵƚƉƵƚƵƌƌĞŶƚ&ƌŽŵнVSŽƌͲVS (A) 80 t= 1m s t= DC 10m s T C = DC 25 °C DC TC = 8 T 5° C = 12 C 5° C 10 1 0.1 1 10 100 ^ƵƉƉůLJƚŽKƵƚƉƵƚŝīĞƌĞŶƟĂů͕VS-VOUT (V) GENERAL Please read Application Note 1 “General Operating Considerations” which covers stability, supplies, heat sinking, mounting, current limit, SOA interpretation, and specification interpretation. Visit www.apexanalog.com for Apex Microtechnology’s complete Application Notes library, Technical Seminar Workbook, and Evaluation Kits. CURRENT LIMIT There is no internal circuit provision for current limit in the PA52. However, the PA52 circuit board in the PA52 evaluation kit does provide a means whereby the output current can be sensed. An external circuit current limit can thereby be implemented if needed. BOOST OPERATION With the VB feature the small signal stages of the amplifier are operated at higher supply voltages than the amplifier’s high current output stage. +VB (pin 11) and –VB (pin 12) are connected to the small signal circuitry of the amplifier. +VS (pin 9,10) and –VS (pin 3,4) are connected to the high current output stage. An additional 10V on the VB pins is sufficient to allow the small signal stages to drive the output transistors into PA52U Rev K 9 PA52 • PA52A saturation and improve the output voltage swing for extra efficient operation when required. When close swings to the supply rails is not required the +VB and +VS pins must be strapped together as well as the –VB and –VS pins. The boost voltage pins must not be at a voltage lower than the VS pins. COMPENSATION Compensation is internally fixed for a gain of 3 or more and is not adjustable by the user. The PA52 therefore is not unity gain stable. POWER SUPPLY BYPASSING Proper and sufficient power supply bypassing is crucial to proper operation of the PA52. Bypass the +VB and -VB supply pins with a minimum 0.1µF ceramic capacitors directly at the supply pins. On the +VS and -VS pins use a combination of ceramic and electrolytic capacitors. Use 1µF ceramic capacitors and an electrolytic capacitor at least 10µF for each amp of output current required. 10 PA52U Rev K PA52 • PA52A PACKAGE DESIGN PACKAGE STYLE CR NEED TECHNICAL HELP? CONTACT APEX SUPPORT! For all Apex Microtechnology product questions and inquiries, call toll free 800-546-2739 in North America. For inquiries via email, please contact apex.support@apexanalog.com. International customers can also request support by contacting their local Apex Microtechnology Sales Representative. To find the one nearest to you, go to www.apexanalog.com IMPORTANT NOTICE Apex Microtechnology, Inc. has made every effort to insure the accuracy of the content contained in this document. However, the information is subject to change without notice and is provided "AS IS" without warranty of any kind (expressed or implied). Apex Microtechnology reserves the right to make changes without further notice to any specifications or products mentioned herein to improve reliability. This document is the property of Apex Microtechnology and by furnishing this information, Apex Microtechnology grants no license, expressed or implied under any patents, mask work rights, copyrights, trademarks, trade secrets or other intellectual property rights. Apex Microtechnology owns the copyrights associated with the information contained herein and gives consent for copies to be made of the information only for use within your organization with respect to Apex Microtechnology integrated circuits or other products of Apex Microtechnology. This consent does not extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale. APEX MICROTECHNOLOGY PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED TO BE SUITABLE FOR USE IN PRODUCTS USED FOR LIFE SUPPORT, AUTOMOTIVE SAFETY, SECURITY DEVICES, OR OTHER CRITICAL APPLICATIONS. PRODUCTS IN SUCH APPLICATIONS ARE UNDERSTOOD TO BE FULLY AT THE CUSTOMER OR THE CUSTOMER’S RISK. Apex Microtechnology, Apex and Apex Precision Power are trademarks of Apex Microtechnology, Inc. All other corporate names noted herein may be trademarks of their respective holders. PA52U Rev K 11