PA50

PA50PA50 • PA50A • PA50A PA50, PA50A Power Operational Amplifier FEATURES • HIGH INTERNAL DISSIPATION — 400 Watts • HIGH CURRENT — 40A Continuous, 100A PEAK • HIGH SLEW RATE — 50V/µs • OPTIONAL BOOST VOLTAGE INPUTS APPLICATIONS • SEMI-CONDUCTOR TESTING DESCRIPTION The PA50 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. EQUIVALENT SCHEMATIC 12-PIN DIP PACKAGE STYLE CR 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 Application Note 1”. EXTERNAL CONNECTIONS -Vb –IN +IN 12 2 11 +Vs 9 +Vs 3 -Vs 4 -OUT 5 8 6 7 Copyright © Apex Microtechnology, Inc. 2012 (All Rights Reserved) TOP VIEW +Vb 10 -Vs -OUT www.apexanalog.com PA50U 1 +OUT +OUT JAN 2015 1 PA50U REVJ PA50 • PA50A ABSOLUTE MAXIMUM RATINGS SPECIFICATIONS PARAMETER SUPPLY VOLTAGE, +VS to –VS BOOST VOLTAGE, +Vb to -Vb OUTPUT CURRENT, within SOA POWER DISSIPATION, internal INPUT VOLTAGE, differential INPUT VOLTAGE, common mode TEMPERATURE, pin solder - 10s TEMPERATURE, junction2 TEMPERATURE, storage OPERATING TEMPERATURE RANGE, case TEST CONDITIONS1 INPUT OFFSET VOLTAGE, initial OFFSET VOLTAGE, vs. temperature OFFSET VOLTAGE, vs. supply BIAS CURRENT, initial BIAS CURRENT vs. supply OFFSET CURRENT, initial INPUT IMPEDANCE, DC INPUT CAPACITANCE COMMON MODE VOLTAGE RANGE COMMON MODE REJECTION,DC INPUT NOISE GAIN OPEN LOOP,@ 15 Hz GAIN BANDWIDTH PRODUCT POWER BANDWIDTH OUTPUT VOLTAGE SWING VOLTAGE SWING, PA50 VOLTAGE SWING, PA50A CURRENT, peak SETTLING TIME TO 0.1% SLEW RATE RESISTANCE POWER SUPPLY VOLTAGE, ±VBOOST VOLTAGE, ±VS CURRENT,quiescent, boost supply CURRENT, quiescent, total THERMAL RESISTANCE,AC,junction to case3 RESISTANCE,DC,junction to case RESISTANCE, junction to air TEMPERATURE RANGE, case MIN Full temperature range Full temperature range Full temp, range, VCM = ±20V 100 kHZ BW, Rs=1 kΩ Full temperature range RL=10 Ω RL=4 Ω, Vo = 80VP-P, Av = -10 Full temperature range Io = 40A ±VBOOST=±VS±10V, Io=40A ±VBOOST=±VS±10V, Io=50A 3ms 10% Duty Cycle AV= -10,10V STEP,RL=4 Ω AV=-10 IO=0, NO LOAD, 2 MHZ Full temperature range Full temperature range Full temperature range, F>60 HZ Full temperature range, F>60 HZ Full temperature range Meets full range specification -VB +12 +VB -14 90 94 PA50 TYP 5 20 10 10 0.01 10 10 13 100 10 102 3 200 ±VS ±9.5 ±VS ±8.0 ±VS ±5.8 ±VS ±4.0 100 50 +14, -12 ±3 -25 1 2.5 ±15 26 30 0.2 0.25 12 100V 130V 100A 400W ±20V ±Vb 350°C 150°C –65 to +150°C –55 to +125°C PA50A MAX MIN TYP MAX UNITS 10 50 30 50 50 2 5 * * * * * * * * * * * mV µV/°V µV/V pA pA/V pA Ω pF * * * * V dB µVrms * * * * dB MHz kHz * * V V ±VS ±5.8 ±VS ±5.0 V * A * µs * V/µs * Ω ±65 * * ±50 * 32 * 36 * * * * * 0.25 * * 0.31 * * * 85 * * V V mA mA °C/W °C/W °C/W °C NOTES: * The specification of PA50A is identical to the specification for PA50 in applicable column to the left 1. Unless otherwise noted: TC = 25°C, DC input specifications are ± value given. Power supply voltage is typical rating. ±VBOOST = ±VS. 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.   CAUTION The PA50 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. 2 PA50U 200 100 0 25 50 75 TEMPERATURE, T (°C) 100 SMALL SIGNAL GAIN 80 40 0 RL = 4 Ω COMMON MODE REJECTION, CMR (dB) 1 100 10 80 60 40 20 PA50U 40 20 0 10 100 1K 10K 100K FREQUENCY, F (Hz) 1M 100 1K 10K 100K 1M FREQUENCY F (Hz) 10M SMALL SIGNAL PHASE RL = 4 Ω –45 –90 –135 –180 100 1K 10K 100K 1M 10M FREQUENCY, Ff (Hz) COMMON MODE REJECTION 0 10 60 0 OPEN LOOP PHASE, Ф (°) 0 80 1 1.125 VOLTAGE DROP FROM SUPPLY, VS – VO (V) 300 POWER SUPPLY REJECTION 10 OUTPUT VOLTAGE, VO (VP-P) T = TC 100 QUIESCENT CURRENT 8 6 1.075 1.05 1.025 1 20 100 40 60 80 TOTAL SUPPLY VOLTAGE, VS (V) = VS T V BOOS 4 S 2 0 100 90 80 70 ST =V 0V +1 V BOO 0 10 20 30 40 OUTPUT CURRENT, IO (A) 50 POWER RESPONSE 60 50 40 30 100 ±VS = ±VB 1.1 OUTPUT VOLTAGE SWING 10 20 100 1K 10K 100K 1M 10M FREQUENCY, F (Hz) OUTPUT CURRENT, (A) 400 POWER SUPPLY REJECTION, PSR (dB) 120 POWER DERATING NORMALIZED QUIESCENT CURRENT, IQ (X) INTERNAL POWER DISSIPATION, P (W) 500 OPEN LOOP GAIN RESPONSE, A (dB) PA50 • PA50A 10 100K FREQUENCY, F (Hz) 1M SAFE OPERATING AREA t= 1m s t = DC 10 DC T ms C T = 25 DC ° C = 85 C T °C C = 12 5° C 1 0.1 1 10 100 SUPPLY TO OUTPUT DIFFERENTIAL, (V) 3 PA50 • PA50A 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 Note library, Technical Seminar Workbook, and Evaluation Kits. output transistors into saturation and improve the output voltage swing for extra efficient operation when required. When close swings to the supply rails is not required the +VBOOST and +VS pins must be strapped together as well as the –VBOOST and –VS pins. The boost voltage pins must not be at a voltage lower than the VS pins. CURRENT LIMIT COMPENSATION There is no internal circuit provision for current limit in the PA50. However, the PA50 circuit board in the PA50 evaluation kit does provide a means whereby the output current can be sensed. An external circuit current limit can thereby be implemented if needed. Compensation is internally fixed for a gain of 3 or more and is not adjustable by the user. The PA50 therefore is not unity gain stable. BOOST OPERATION With the VBOOST feature the small signal stages of the amplifier are operated at higher supply voltages than the amplifier’s high current output stage. +VBOOST (pin 11) and –VBOOST (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 VBOOST pins is sufficient to allow the small signal stages to drive the POWER SUPPLY BYPASSING Proper and sufficient power supply bypassing is crucial to proper operation of the PA50. 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. 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 Microtechnolgy, Inc. All other corporate names noted herein may be trademarks of their respective holders. 4 www.apexanalog.com Copyright © Apex Microtechnology, Inc. 2012 (All Rights Reserved) JANPA50U 2015 PA50U REVJ