Analog Devices ADP1972 Buck or Boost PWM Controller
Analog Device's ADP1972 Buck or Boost PWM Controller is a constant frequency, voltage mode, pulse-width modulation (PWM) controller for buck or boost, dc-to-dc, asynchronous applications. The ADP1972 is designed for use in asynchronous battery testing applications with an external, high voltage field effect transistor (FET), half bridge driver, and an external control device, such as the AD8450. The asynchronous device operates as a buck converter in battery charge mode and operates as a boost converter in recycle mode to recycle energy to the input bus. The ADP1972 high voltage, VIN supply pin can withstand a maximum operating voltage of 60V and reduces the need for additional system supply voltages. The ADP1972 has integrated features such as precision enable, pin selective buck or boost mode operation, internal and external synchronization control with programmable phase shift, programmable maximum duty cycle, and programmable peak hiccup current limit.