NCP4326DR2G Description

The secondary controller NCP4326DR2G significantly improves the overall efficiency and cross?regulation figures when used in a Switchmode Power Supply. Compared to traditional regulation schemes, the NCP4326DR2G provides superior performance in cross?regulation by individually regulating outputs. Powered from the main winding, the device actuates two independent switches that precisely adjust the considered outputs to resistor?selectable voltages.

NCP4326DR2G Features

0% to 100% Duty Cycle Range

Integrated Shunt Regulator for Optocoupler Control

Internal Voltage Reference (1.25 V, 1% @ 25°C)

2 Independent Power MOSFET Drivers

Enable/Disable for Each Driver

Independent Soft?Starts on both Output Drivers

Independent Skip Cycle on both Output Drivers

Standby Pin

580 / 650 mA Peak Current Source/Sink Driver Capability

Synchronization Pin

5 V Undervoltage Lock?Out on Vcc

This is a Pb?Free Device

NCP4326DR2G Applications

Consumer Electronics Applications: DVD, Set Top Box, CDR, Game Console

Any Multi?Output Voltage Quasi?Resonant SMPS