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MAX17606：Secondary-Side Synchronous MOSFET Driver for Flyback Converters

Small Form Factor, High-Current Secondary-Side Driver Ideal for High-Power, Isolated DC-DC Flyback

The MAX17606 is a secondary-side synchronous driver and controller specifically designed for the isolated flyback topology operating in Discontinuous Conduction Mode (DCM) or Border Conduction Mode (BCM). By replacing the secondary diode with a MOSFET, the device improves the efficiency and simplifies thermal management. The 7V VDRV of the device makes it suitable for switching both logic-level and standard MOSFETs used for flyback synchronous rectification. The 36V input voltage allows it to drive from either the output voltage or rectified drain voltage of the secondary MOSFET. Programmable minimum on and off-times provide flexibility needed to handle transformer parasitic element-related ringing in a robust manner. With 2A/4A source/sink currents, the MAX17606 is ideal for driving low RDS(on) power MOSFETs with fast gate transition times.

Key Features Wide 4.5V to 36V Input 2A/4A Peak Source/Sink Gate Drive Currents Suitable for Discontinuous Conduction Mode (DCM), Border Conduction Mode (BCM) 320μA (typ) Low Quiescent Current Programmable Turn-Off Trip Point Programmable Minimum Off-Time to Handle DCM Ringing Thermal-Shutdown Protection 6-Lead SOT-23 Package

MAX17606: Functional (or Block) Diagram Applications/Uses High-Efficiency Isolated Flyback Converters

DataSheet

Parametrics

Design kits & evaluation modules

• MAX17606SFBEVKIT

Quality and Environmental Data

• MAX17606.pdf

Ordering Information