STNRG328S - STMicroelectronics

STNRG328S Digital controller

The STNRG328S is a digital controller for STC/HSTC open loop resonant converter from STMicroelectronics. It performs a power conversion from an input voltage in a typical range of 40 V to 60 V to an output voltage with a programmable conversion ratio from 2:1 to 10:1 with fixed duty cycle and programmable frequency from 140 kHz to 300 kHz. It’s able to deliv.

Features

• Digital controller for STC/HSTC topologies
• Support wide conversion ratio from 2:1 to 10:1 to provide several Vout
• State Machine Event Driven (SMED) to implement key control features:
  – Current limit in combination with Hot swap controller
  – Operating input voltage window
  – Conversion ratio control
  – PWM frequency and deadtime management to guarantee ZCD function
  – Soft-start control
  – Driver management
  – Temperature control
• Typical application: Server DC/DC intermediate bus generation from 40 V to 60 V input voltage, 200 W to 2 kW output power range
• Peripherals
  – 10-bit ADC
  – UART in.