SA12SA12 SA12 Pulse Width Modulation Amplifiers FEATURE HIGH FREQUENCY SWITCHING 200 kHz WIDE SUPPLY RANGE16-200V 15A CONTINUOUS TO 65C CASE 3 PROTECTION CIRCUITS ANALOG OR DIGITAL INPUTS SYNCHRONIZED OR EXTERNAL OSCILLATOR FLEXIBLE FREQUENCY CONTROL APPLICATIONS REACTIVE LOADS 12-PIN POWER DIP LOW FREQUENCY SONAR PACKAGE STYLE CR LARGE PIEZO ELEMENTS EXTERNAL CONNECTIONS OFF-LINE DRIVERS C-D WELD CONTROLLER ISENSE A DESCRIPTION 1 12 The SA12 is a pulse width modulation amplifier that can CLK IN A OUT supply 3000W to the load. An internal 400kHz oscillator re- 2 11 CLK OUT quires no external components. The clock input stage divides * VCC +PWM 3 10 TOPTOP the oscillator frequency by two, which provides the 200 kHz * VIEWVIEW +VS 4 9 switching frequency. External oscillators may also be used to -PWM/RAMP lower the switching frequency or to synchronize multiple ampli- 5 8 GND erfi s. Current sensing is provided for each half of the H-bridge 6 7 B OUT giving amplitude and direction data. A shutdown input turns ILIM/SHDN I SENSE B off all four drivers of the H-bridge output. A high side current limit and the programmable low side current limit protect the amplifier from shorts to supply or ground in addition to load shorts. The H-bridge output MOSFETs are protected from Case tied to pin 5. Allow no current in case. Bypassing of supplies thermal overloads by directly sensing the temperature of the is required. Package is Apex MO-127 (STD). See Outline Dimensions/Packages in Apex data book. die. The 12-pin hermetic MO-127 power package occupies only 3 square inches of board space. *See text. As +PWM goes more positive, A OUT duty cycle increases. BLOCK DIAGRAM AND TYPICAL APPLICATION TORQUE MOTOR DRIVER Vcc 10 CURRENT 9 +V S LIMIT +PWM 3 PWM PWM/RAMP 4 100pF 28K B OUT OUTPUT 8 DRIVERS MOTOR A OUT 11 CLK OUT OSC 2 2 1K I SENSE A 12 SHUTDOWN 5K ILIM/SHDN CONTROL RSENSE CLK IN 6 1 .01F 1K CONTROL I SENSE B GND 5 SIGNAL 7 RSENSE 5V 5V Copyright Apex Microtechnology, Inc. 2014 SEPT 2014 wwwSA12U .apexanalog.com 1 (All Rights Reserved) SA12U REVLSA12 SUPPLY VOLTAGE, +V 200V ABSOLUTE MAXIMUM RATINGS S SUPPLY VOLTAGE, V 16V CC 1 POWER DISSIPATION, internal 250W TEMPERATURE, pin solder - 10s 350C 3 TEMPERATURE, junction 150C TEMPERATURE, storage 65 to +150C OPERATING TEMPERATURE RANGE, case 55 to +125C INPUT VOLTAGE, +PWM 0 to +11V INPUT VOLTAGE, PWM 0 to +11V INPUT VOLTAGE, I 0 to +10V LIM SPECIFICATIONS 2 PARAMETER TEST CONDITIONS MIN TYP MAX UNITS CLOCK (CLK) 4 CLK OUT, high level I 1mA 4.8 5.3 V OUT 4 CLK OUT, low level I 1mA 0 .4 V OUT FREQUENCY 392 400 408 kHz RAMP, center voltage 5 V RAMP, P-P voltage 4 V 4 CLK IN, low level 0 .9 V 4 CLK IN, high level 3.7 5.4 V OUTPUT 4 TOTAL R .4 ON EFFICIENCY, 10A output V = 200V 97 % S SWITCHING FREQUENCY OSC in 2 196 200 204 kHz 4 CURRENT, continuous 65C case 15 A 4 CURRENT, peak 20 A POWER SUPPLY VOLTAGE, V Full temperature range 16 120 200 V S VOLTAGE, V Full temperature range 14 15 16 V CC CURRENT, V I = 0 125 mA CC OUT CURRENT, Vshutdown 80 mA CC, CURRENT, V No Load 200 mA S I /SHUTDOWN LIM TRIP POINT 90 110 mV INPUT CURRENT 100 nA 3 THERMAL RESISTANCE, junction to case Full temperature range, for each die 1 C/W RESISTANCE, junction to air Full temperature range 12 C/W TEMPERATURE RANGE, case Meets full range specifications 25 +85 C NOTES: 1. Each of the two active output transistors can dissipate 125W. 2. Unless otherwise noted: T = 25C, V , V at typical specification. C S CC 3. 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. 4. Guaranteed but not tested. The SA12 is constructed from MOSFET transistors. ESD handling procedures must be observed. CAUTION 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 850C to avoid generating toxic fumes. 2 SA12U