30A, 100V PWM Amplifier

  • Supply range – 16V to 100V
  • High output current – 30A continuous
  • Three protection circuits
  • Analog or digital inputs
  • Synchronized or external oscillator
  • Flexible frequency control
Apex Microtechnology's SA03, a 30A, 100V PWM Amplifier

The SA03 is a 30A, 100V pulse width modulation (PWM) amplifier that can deliver up to 3,000W to the load. A 23kHz switching frequency results via the clock input stage that divides the internal 45kHz oscillator by two while requiring no external components. External oscillators may be used to lower the switching frequency or to synchronize multiple amplifiers.

Protection features for the SA03 include current sensing to provide amplitude and direction data for each half of the device’s bridge circuitry and allow the shutdown input to turn 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 thermal overloads by direct temperature sensing of the die. This PWM amplifier is a hybrid product design and housed in a 12-pin hermetic and isolated metal power package that requires just three square inches of board space. 

Variant Temp Range (°C) Package Option
SA03 -25 to 85 12-pin MO-127

See how the SA03 fits your system requirements Use our Power Design Tool to assist with designing high power analog circuits. Apex Microtechnology's Power Design Tool