General Descriptions

The  STR-A6100  series  are  power  ICs  for  switching power supplies, incorporating a MOSFET and a current

mode PRC controller IC. PRC  (Pulse  Ratio  Control)  controls  on-time  with fixed off-time.

The  IC  includes  a  startup  circuit  and  a  standby function to achieve the low standby power. The rich set

of  protection  features  helps  to  realize  low  component counts, and high performance-to-cost power supply.

Features

Current Mode Type Pulse Ratio Control

Auto Standby Function

  Normal Operation  ------------------------------  PRC Mode

  Standby  ----------------------------  Burst Oscillation Mode  

No Load Power Consumption < 40mW

Leading Edge Blanking Function

Auto Bias Function

Protections

  Overcurrent Protection (OCP); pulse-by-pulse

  Overload Protection (OLP); auto-restart

  Overvoltage Protection (OVP); latched shutdown

  Thermal Shutdown Protection (TSD); latched shutdown

Applications

White goods

Auxiliary SMPS

Low power SMPS, etc.