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UCC24636 Datasheet Synchronous Rectifier Controller

Manufacturer: Texas Instruments

Overview: Product Folder Sample & Buy Technical Documents Tools & Software Support & Community Reference Design UCC24636 SLUSCG2A – MARCH 2016 – REVISED MARCH 2016 UCC24636 Synchronous Rectifier (SR) Controller With Ultra-Low.

General Description

The UCC24636 SR is a compact, 6-pin secondaryside synchronous rectifier MOSFET controller and driver for high efficiency Flyback converters operating in Discontinuous (DCM) and Transition mode (TM).

Unlike traditional SR controllers which measure the SR MOSFET drain voltage, UCC24636 implements a volt-second balance control method to determine the turn off transition of the SR MOSFET;

hence, SR conduction time is independent of the MOSFET RDSON, parasitic inductance or ringing allowing flexibility to designers in component slelction and PCB layout.

Key Features

  • 1 Secondary-Side SR Controller Optimized for 5-V to 24-V Output Discontinuous/Transition Mode Only Flyback Converters.
  • Volt-Second Balance Control Enables Highest Rectifier Efficiency.
  • Compatible with PSR and SSR Flyback Controllers.
  • Ultra Low 110-µA Standby Current Consumption.
  • Auto-Detect Standby Mode Disables SR Switching for Lower No-Load Power Consumption.
  • SR Turn-Off Independent of RDSON and Parasitic Inductance.
  • Operating Freq.

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