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RT9611B

Description
Synchronous Rectified Buck MOSFET Drivers
Categorylogic    Gate   
File Size220KB,15 Pages
ManufacturerRichtek Technology Corporation
Websitehttps://www.richtek.com/
Download Datasheet Parametric Compare View All

RT9611B Overview

Synchronous Rectified Buck MOSFET Drivers

RT9611B Parametric

Parameter NameAttribute value
StatusActive
Number of Channels1
Vcc (typ)(V)12
UGATE Rise Time (typ)(ns)25
UGATE Fall Time (typ)(ns)12
LGATE Rise Time (typ)(ns)24
LGATE Fall Time (typ)(ns)10
UGATE Source Resistance (typ)(Ohm)
UGATE Sink Resistance (typ)(Ohm)1.4
LGATE Source Resistance (typ)(Ohm)
LGATE Sink Resistance (typ)(Ohm)1.1
Disable PinYes
Built-In Bootstrap DiodeYes
Iq (typ)(mA)1.2
FeaturesTri-State Input
Package TypeWDFN3x3-8E
Datasheethttps://datasheet5.oss-cn-shanghai.aliyuncs.com/datasheets/richtek/DS9611AB-03.pdf
®
RT9611A/B
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
CC
= 5V or
V
CC
= 12V applications. The RT9611A/B also builds in an
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
UGATEpdh
. The RT9611B has
comparatively large t
UGATEpdh
than RT9611B. Hence, the
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.
Note :
Richtek products are :
RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
Features
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
Applications
Core Voltage Supplies for Desktop, Motherboard CPU
High Frequency Low Profile DC/DC Converters
High Current Low Voltage DC/DC Converters
Ordering Information
RT9611A/B
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
Halogen Free and Pb free)
Long Dead Time
Short Dead Time
Copyright
©
2012 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS9611A/B-03 June 2012
www.richtek.com
1

RT9611B Related Products

RT9611B RT9611A
Description Synchronous Rectified Buck MOSFET Drivers Synchronous Rectified Buck MOSFET Drivers
Status Active Active
Number of Channels 1 1
Vcc (typ)(V) 12 12
UGATE Rise Time (typ)(ns) 25 25
UGATE Fall Time (typ)(ns) 12 12
LGATE Rise Time (typ)(ns) 24 24
LGATE Fall Time (typ)(ns) 10 10
UGATE Sink Resistance (typ)(Ohm) 1.4 1.4
LGATE Sink Resistance (typ)(Ohm) 1.1 1.1
Disable Pin Yes Yes
Built-In Bootstrap Diode Yes Yes
Iq (typ)(mA) 1.2 1.2
Features Tri-State Input Tri-State Input
Package Type WDFN3x3-8E WDFN3x3-8E
Datasheet https://datasheet5.oss-cn-shanghai.aliyuncs.com/datasheets/richtek/DS9611AB-03.pdf https://datasheet5.oss-cn-shanghai.aliyuncs.com/datasheets/richtek/DS9611AB-03.pdf
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