SRK2001 datasheet(1/22 Pages) STMICROELECTRONICS

部件名	SRK2001

功能描述	Adaptive synchronous rectification controller for LLC resonant converter

PDF	22 Pages

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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1 / 22 page

This is information on a product in full production.

May 2015

DocID027367 Rev 3

1/22

SRK2001

Adaptive synchronous rectification controller for LLC resonant

converter

Datasheet

- production data

Features

 Secondary side synchronous rectification

controller optimized for LLC resonant converter

 Dual gate driver for N-channel MOSFETs

 Adaptive turn-off logic

 Turn-on logic with adaptive masking time

 Auto-compensation of parasitic inductance

 Low consumption mode: 50 µA quiescent

current

 VCC operating voltage range 4.5 to 32 V

 High voltage drain-to-source Kelvin sensing for

each SR MOSFET

 Operating frequency up to 500 kHz

 35 ns total delay at turn-off

 Protection against current reversal

 Safe management of load transient, light-load

and startup conditions

 Intelligent automatic sleep mode at light-load

with user programmable enter/exit load levels,

with soft transitions and function disable

 Programmable exit load levels from burst mode

 Compatible with standard and logic level

MOSFETs: SRK2001 and SRK2001L

 SSOP10 package

Applications

 AC-DC adapters

 All-in -one PC

 High-end flat panel TV

 80+/85+ compliant ATX SMPS

 90+/92+ compliant SERVER SMPS

 Industrial SMPS

Description

The SRK2001 controller implements a control

scheme specific for secondary side synchronous

rectification in LLC resonant converters that use a

transformer with center tap secondary winding for

full wave rectification.

It provides two high current gate drive outputs,

each capable of driving one or more N-channel

power MOSFETs. Each gate driver is controlled

separately and an interlock logic circuit prevents

the two synchronous rectifier MOSFETs from

conducting simultaneously.

The control scheme in this IC provides for each

synchronous rectifier being switched on as the

corresponding half-winding starts conducting and

switched off as its current goes to zero.

The innovative turn-on logic with adaptive

masking time and the adaptive turn-off logic

allows maximizing the conduction time of the SR

MOSFETs eliminating the need of the parasitic

inductance compensation circuit.

The low consumption mode of the device allows

to meet the most stringent requirement for

converter power consumption in light-load/no load

conditions.

A noticeable feature is the very low external

component count required.

SSOP10

Table 1. Ordering codes

Package Packing

Standard gate

MOSFETs

Logic gate

MOSFETs

SSOP10

Tube

SRK2001

SRK2001L

Tape

and reel

SRK2001TR SRK2001LTR

www.st.com

类似零件编号 - SRK2001

制造商	部件名	数据表	功能描述
STMicroelectronics	SRK2001A	484Kb / 20P	Auto-compensation of parasitic inductance June 2016 Rev 1
STMicroelectronics	SRK2001ATR	484Kb / 20P	Auto-compensation of parasitic inductance June 2016 Rev 1

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类似说明 - SRK2001

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Texas Instruments	UCC24624	1Mb / 29P	Dual-Channel Synchronous Rectifier Controller for LLC Resonant Converters
ON Semiconductor	FAN6248HC	281Kb / 15P	Advanced Synchronous Rectifier Controller for LLC Resonant Converter January, 2018 ??Rev. 2
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