SRM4010

SRM4010 Datasheet

SRMTM4010

Part	Datasheet
SRM4010	SRM4010 (pdf)

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COLORADO DIVISION SRMTM4010 40A Synchronous Rectifier Module W.Microsemi .C O M The SRMTM4010 Module is a complete solution for implementing very high efficiency Synchronous Rectification and where high bandwidth is needed. Proprietary prediction circuitry eliminates cross conduction for sudden large changes in pulse width. The eliminates many of the problems with selfdriven approaches. The module connects to the transformer secondary of a Forward Converter to provide complete high current module is self-powered from the transformer secondary winding and operates over a wide range of peak transformer voltages and PWM frequencies. rectification at output voltages ranging from 5 volts down to volt, in a thermally efficient surface mount package. A 5-Volt Linear Regulator is also available as a power supply for other secondary side circuitry such as powering opto coupler Rectification Efficiency as high as 95% is achieved by avoiding cross conduction. Dedicated Ics provide effective Gate drive of the ultra low Rds on MOSFETs used in the feedback. In very low voltage applications where the peak transformer voltage is not high enough for powering the modules, secondary power can be provided to the regulator from an module. In conventional self-driven approaches, the MOSFET drive ends as soon as the power transformer finishes resetting. This causes increased losses as the duty cycle decreases. The SRMTM4010 control circuitry drives either the Forward or the Catch MOSFET over virtually the entire duty cycle. Only a small prediction time, typically 100 ns, additional transformer winding. The High Current Surface Mount Package has Low Inductance, and robust terminals for superior regulation and low noise susceptibility in high load current transients. The Module has an isolated base and is designed for direct PCB mounting with the is needed to avoid cross conduction. The SRMTM4010 is designed to handle large sudden changes in duty cycle. This makes the module suitable for current mode control applications, with large load changes terminals formed within the package. The base-plate of the module allows heat to be dissipated by the PCB etch, or a mechanical sink attachment through the PCB for higher power applications. KEY FEATURES Easy to use Surface Mountable Solution for up to 40A Very High Rectification Efficiency at Output Voltages from 5V down to 1V Integrated Solution with few external parts saves Board Space Robust Package with Copper Base-Plate provides Effective Heat Distribution 5 Volt Linear Regulator available to power Secondary side Circuitry Suitable for converters that operate at light load Avoids problems with parallel operation that plague simple self-driven schemes Operates at PWM Frequencies ranging from 200 to 400KHz High Current Isolated DC-DC Converters Distributed Power Architectures CPU Power Supply off 48VDC Bus PRODUCT HIGHLIGHT 48 to 150V PWM Controller CTCH SRRMMT4M0401100 5V REG PGND OPTO Feedback VOUT 1 to 5V

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COLORADO DIVISION

SRMTM4010
40A Synchronous Rectifier Module

W.Microsemi .C O M

The SRMTM4010 Module is a complete
solution for implementing very high efficiency Synchronous Rectification and
where high bandwidth is needed. Proprietary prediction circuitry eliminates cross conduction for sudden large changes in pulse width. The
eliminates many of the problems with selfdriven approaches. The module connects to the transformer secondary of a Forward Converter to provide complete high current
module is self-powered from the transformer secondary winding and operates over a wide range of peak transformer voltages and PWM frequencies.
rectification at output voltages ranging from 5 volts down to volt, in a thermally efficient surface mount package.

A 5-Volt Linear Regulator is also available as a power supply for other secondary side circuitry such as powering opto coupler

Rectification Efficiency as high as 95% is achieved by avoiding cross conduction. Dedicated Ics provide effective Gate drive of the ultra low Rds on MOSFETs used in the
feedback. In very low voltage applications where the peak transformer voltage is not high enough for powering the modules, secondary power can be provided to the regulator from an
module. In conventional self-driven approaches, the MOSFET drive ends as soon as the power transformer finishes resetting. This causes increased losses as the duty cycle decreases. The SRMTM4010 control circuitry drives either the Forward or the Catch MOSFET over virtually the entire duty cycle. Only a small prediction time, typically 100 ns,
additional transformer winding.

The High Current Surface Mount Package has Low Inductance, and robust terminals for superior regulation and low noise susceptibility in high load current transients. The Module has an isolated base and is designed for direct PCB mounting with the
is needed to avoid cross conduction.

The SRMTM4010 is designed to handle large sudden changes in duty cycle. This makes the module suitable for current mode control applications, with large load changes
terminals formed within the package. The base-plate of the module allows heat to be dissipated by the PCB etch, or a mechanical sink attachment through the PCB for higher power applications.

KEY FEATURES

Easy to use Surface Mountable Solution for up to 40A

Very High Rectification Efficiency at Output Voltages from 5V down to 1V

Integrated Solution with few external parts saves Board Space

Robust Package with Copper Base-Plate provides Effective Heat Distribution
5 Volt Linear Regulator available to power Secondary side Circuitry

Suitable for converters that operate at light load

Avoids problems with parallel operation that plague simple self-driven schemes

Operates at PWM Frequencies ranging from 200 to 400KHz

High Current Isolated DC-DC Converters

Distributed Power Architectures

CPU Power Supply off 48VDC Bus

PRODUCT HIGHLIGHT
48 to 150V

PWM Controller

CTCH

SRRMMT4M0401100
5V REG

PGND

OPTO Feedback

VOUT
1 to 5V

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Datasheet ID: SRM4010 649160