MSA240MSA240 MSA240 Pulse Width Modulation Amplifiers DESCRIPTION FEATURES The MSA240 is a surface mount constructed PWM ampli- LOW COST er that prfi ovides a cost effective solution in many industrial HIGH VOLTAGE - 100 VOLTS applications. The MSA240 offers outstanding performance HIGH OUTPUT CURRENT - 20 AMPS that rivals many much more expensive hybrid components. 2kW OUTPUT CAPABILITY The MSA240 is a complete PWM amplifier including an oscil - lator, comparator, error amplifier, current limit comparators, 5V VARIABLE SWITCHING FREQUENCY reference, a smart controller and a full bridge output circuit. The switching frequency is user programmable up to 50 kHz. APPLICATIONS The MSA240 is built on a thermally conductive but electrically insulating substrate that can be mounted to a heatsink. BRUSH MOTOR CONTROL MRI MAGNETIC BEARINGS CLASS D SWITCHMODE AMPLIFIER EQUIVALENT CIRCUIT DIAGRAM V 29 CC 5V REF 19 OUT 5V SIGNAL REF 26 GND 30-34 SIGNAL 18 +Vs GND SIGNAL 2 GND 200mV 44-48 DIGITAL +Vs 23 RETURN + 1K - I B LIM 7 Q1 Q2 .01F + 35-39 1K - I A/SHDN LIM 10 A OUT SMART 2.68K .01F R 22 CONTROLLER D1 OSC OSC 2200pF 49-53 Q3 CLK OUT 24 B OUT E/A OUT D2 17 Q4 54-57 E/A -IN 16 - I SENSE B E/A +IN 15 + R2 40-43 +IN 13 + I SENSE A 5.36K R3 R IN 1 - RAMP 2200pF CLK/2 OUT 20 CLK/2 CLK IN 21 AC BACK BACK PLATE 28 PLATE 1F APEX TP 27 PWR 58 GND Copyright Apex Microtechnology, Inc. 2014 JUL 2014 wwwMSA240U .apexanalog.com 1 (All Rights Reserved) MSA240U REVGMSA240 SUPPLY VOLTAGE, VS 100V ABSOLUTE MAXIMUM RATINGS SUPPLY VOLTAGE, VCC 16V OUTPUT CURRENT, peak 30A, within SOA 3 POWER DISSIPATION, internal, DC 250W SIGNAL INPUT VOLTAGES 5.4V TEMPERATURE, pin solder, 10s 225C. 2 TEMPERATURE, junction 175C. TEMPERATURE RANGE, storage -40 to 105C. OPERATING TEMPERATURE, case -40 to 85C. SPECIFICATIONS 1 PARAMETER TEST CONDITIONS MIN TYP MAX UNITS ERROR AMPLIFIER OFFSET VOLTAGE Full temperature range 9 mV BIAS CURRENT Full temperature range 500 nA OFFSET CURRENT Full temperature range 150 nA COMMON MODE VOLTAGE RANGE Full temperature range 0 4 V SLEW RATE Full temperature range 1 V/S OPEN LOOP GAIN R = 2K 96 dB L UNITY GAIN BANDWIDTH 1 MHz CLOCK LOW LEVEL OUTPUT VOLTAGE Full temperature range .2 V HIGH LEVEL OUTPUT VOLTAGE Full temperature range 4.8 V RISE TIME 7 nS FALL TIME 7 nS BIAS CURRENT, pin 22 Full temperature range 0.6 A 5V REFERENCE OUTPUT VOLTAGE 4.85 5.15 V LOAD CURRENT 2 mA OUTPUT 4 TOTAL R , both MOSFETs I = 20A , T = 85C 155 m ON O J CURRENT, continuous 20 A CURRENT, peak 100mS 30 A OUTPUT MOSFET BODY DIODE CONTINUOUS CURRENT 20 A FORWARD VOLTAGE I = 16A 1.3 V REVERSE RECOVERY I = 16A 250 nS F POWER SUPPLY VOLTAGE, V 3 60 100 V S VOLTAGE, V 14 15 16 V CC CURRENT, V , quiescent 22kHz switching 4 28 mA S CURRENT, V , quiescent 22kHz switching 18 mA CC CURRENT, V , shutdown 10 mA CC THERMAL RESISTANCE, DC, junction to case Full temperature range 1.2 C/W RESISTANCE, junction to air Full temperature range 14 C/W TEMPERATURE RANGE, case -40 85 C/W NOTES: 1. Unless otherwise noted: T =25C, V = 15V, V = 60V C CC S 2. Long term operation at the maximum junction temperature will result in reduced product life. Derate internal power dissipation to achieve high MTBF. 3. Each of the two output transistors on at any one time can dissipate 125W. 4. Maximum specification guaranteed but not tested. 2 MSA240U