Secondary Side Post Regulator for AC/DC and DC/DC Multiple Output Converters

The CS5101 is a bipolar monolithic secondary side post regulator (SSPR) which provides tight regulation of multiple output voltages in AC/DC or DC/DC converters. Leading edge pulse width modulation is used with the CS5101.

The CS5101 is designed to operate over an 8.0 V to 45 V supply voltage (VCC) range and up to a 75 V drive voltage (VC).

The CS5101 features include a totem pole output with 1.5 A peak output current capability, externally programmable overcurrent protection, an on chip 2.0 precision 5.0 V reference, internally compensated error amplifier, externally synchronized switching frequency, and a power switch drain voltage monitor. It is available in a 14 lead plastic DIP or a 16 lead wide body SOIC package.

Features

• 1.5 A Peak Output (Grounded Totem Pole)

• 8.0 V to 75 V Gate Drive Voltage

• 8.0 V to 45 V Supply Voltage

• 300 ns Propagation Delay

• 1.0 Error Amplifier Reference Voltage

• Lossless Turn On and Turn Off

• Sleep Mode: < 100 μA

• Overcurrent Protection with Dedicated Differential Amp

• Synchronization to External Clock

• External Power Switch Drain Voltage Monitor

• Pb−Free Packages are Available*