Secondary-Side Synchronous Rectifier Controller
FAN6240 — Secondary-Side Synchronous Rectifier Controller for Flyback Converters
July 2016
FAN6240 Secondary-Side Sync...
Description
FAN6240 — Secondary-Side Synchronous Rectifier Controller for Flyback Converters
July 2016
FAN6240 Secondary-Side Synchronous Rectifier Controller for Flyback Converters
Features
Works in Discontinuous Conduction Mode (DCM). Adaptive Turn-off Trigger Blanking Time for easier
use
Turn-on Trigger Blanking Time (Minimum-OFF
Time) for Improved Noise Immunity
Supports High-Frequency Applications up to
200 kHz
Minimum Turn-on Delay (20 ns) Adaptive Turn-off Threshold Control for Minimized
SR MOSFET Body Diode Conduction (Dead-Time is independent of SR MOSFET)
Wide Voltage Range for LDO Input up to 30 V Small Footprint: SOT-23 6 Pin Package
Description
The FAN6240M6X is a secondary-side synchronous rectifier (SR) controller for an isolated flyback converter operating in Discontinuous Conduction Mode (DCM). The adaptive dead-time control algorithm minimizes the body diode conduction of SR MOSFET while guaranteeing stable and robust SR operation against noise and disturbance caused by the circuit parasitic. 30 V rated input voltage LDO and Low VDD UnderVoltage Lockout (UVLO) voltage allow FAN6240M6X to be used for wide ranges of switched mode power supply output voltage without additional circuit.
Applications
Battery Chargers for Smart Phones, Feature
Phones, and Tablet PCs
AC-DC Adapters for Portable Devices that Require
CV/CC Control
Ordering Information
Part Number
Operating Temperature Range
FAN6240M6X
-40C to +125C
Package
6-Lead, SOT23, JEDEC MO-...
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