RT9611A RICHTEK [Richtek Technology Corporation], RT9611A Datasheet

RT9611A

Manufacturer Part Number

RT9611A

Description

Synchronous Rectified Buck MOSFET Drivers

Manufacturer

RICHTEK [Richtek Technology Corporation]

Datasheet

1.RT9611A.pdf (15 pages)

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Synchronous Rectified Buck MOSFET Drivers

General Description

The RT9611A/B is a high frequency, synchronous rectified,

single phase dual MOSFET driver designed to adapt from

normal MOSFET driving applications to high performance

CPU VR driving capabilities.

The RT9611A/B can be utilized under both V

internal power switch to replace external boot strap diode.

The RT9611A/B can support switching frequency efficiently

up to 500kHz. The RT9611A/B has the UGATE driving

circuit and the LGATE driving circuit for synchronous

rectified DC/DC converter applications. The driving rise/

fall time capability is designed within 30ns and the shoot

through protection mechanism is designed to prevent shoot

through of high side and low side power MOSFETs. The

RT9611A/B has PWM tri-state shut down and OD input

shut down functions which can force driver output into

high impedance.

The difference of the RT9611A and the RT9611B is the

propagation delay, t

comparatively large t

RT9611A is usually recommended to be utilized in

performance oriented applications, such as high power

density CPU VR or GPU VR.

The RT9611A/B comes in a small footprint with 8-pin

packages. The choice of packages type includes SOP-8,

SOP-8 (Exposed Pad) and WDFN-8EL 3x3.

DS9611A/B-03 June 2012

= 12V applications. The RT9611A/B also builds in an

UGATEpdh

than RT9611B. Hence, the

. The RT9611B has

= 5V or

Features

Applications

Ordering Information

Note :

Richtek products are :

RT9611A/B

Drive Two N-MOSFETs

Adaptive Shoot Through Protection

Embedded Bootstrap Diode

Support High Switching Frequency

Fast Output Rise Time

Tri-State Input for Bridge Shutdown

Disable Control Input

Small SOP-8, SOP-8 (Exposed Pad) and 8-Lead

WDFN Packages

RoHS Compliant and Halogen Free

Core Voltage Supplies for Desktop, Motherboard CPU

High Frequency Low Profile DC/DC Converters

High Current Low Voltage DC/DC Converters

RoHS compliant and compatible with the current require-

Suitable for use in SnPb or Pb-free soldering processes.

ments of IPC/JEDEC J-STD-020.

is a registered trademark of Richtek Technology Corporation.

Package Type

S : SOP-8

SP : SOP-8 (Exposed Pad-Option1)

QW : WDFN-8EL 3x3 (W-Type)

Lead Plating System

G : Green (Halogen Free and Pb Free)

Z : ECO (Ecological Element with

Long Dead Time

Short Dead Time

Halogen Free and Pb free)

RT9611A/B

www.richtek.com

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