MOSFET Driver. RT9624B Datasheet

RT9624B Driver. Datasheet pdf. Equivalent

RT9624B Datasheet
Recommendation RT9624B Datasheet
Part RT9624B
Description Single Phase Synchronous Rectified Buck MOSFET Driver
Feature RT9624B; ® RT9624B Single Phase Synchronous Rectified Buck MOSFET Driver General Description The RT9624B is.
Manufacture Richtek
Datasheet
Download RT9624B Datasheet




Richtek RT9624B
®
RT9624B
Single Phase Synchronous Rectified Buck MOSFET Driver
General Description
The RT9624B is a high frequency, synchronous rectified,
single phase MOSFET driver designed for normal MOSFET
driving applications and high performance CPU VR driving
capabilities.
The RT9624B can be supplied from 4.5V to 13.2V. The
applicable power stage VIN range is from 5V to 24V. The
IC also builds in an internal power switch to replace
external bootstrap diode.
The RT9624B can support switching frequency efficiently
up to 500kHz. The IC has both the UGATE and LGATE
driving circuits for synchronous rectified DC/DC converter
applications. The shoot through protection mechanism is
designed to prevent shoot through between high side and
low side power MOSFETs. The RT9624B has tri-state
PWM input with shutdown function, which can force driver
to output low UGATE and LGATE signals.
The RT9624B comes in a small footprint with 8-pin
packages. The choice of package types includes SOP-8,
SOP-8 (Exposed Pad) and WDFN-8L 3x3.
Features
Drive Two N-MOSFETs
Shoot Through Protection
Embedded Bootstrap Diode
Support High Switching Frequency
Fast Output Rising Time
Tri-State PWM Input for Output Shutdown
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
Core Voltage Supplies for GFX Card
Simplified Application Circuit
R1
12V
C1
PWM
Controller
RT9624B
VCC
BOOT
R2
PWM
GND
UGATE
PHASE
LGATE
CBOOT
R3
R4
C5 C6
VIN
Q1
L1
VOUT
R5
Q2
C2
C3 C4
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
DS9624B-06 December 2013
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1



Richtek RT9624B
RT9624B
Ordering Information
RT9624B
Package Type
S : SOP-8
SP : SOP-8 (Exposed Pad-Option1)
QW : WDFN-8L 3x3 (W-Type)
Lead Plating System
Z : ECO (Ecological Element with
Halogen Free and Pb free)
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.
Marking Information
RT9624BZS
RT9624B
ZSYMDNN
RT9624BZS : Product Number
YMDNN : Date Code
Pin Configurations
(TOP VIEW)
BOOT
PWM
NC
VCC
2
3
4
8 UGATE
7 PHASE
6 GND
5 LGATE
SOP-8
BOOT
PWM
NC
VCC
8
27
GND
36
9
45
UGATE
PHASE
GND
LGATE
SOP-8 (Exposed Pad)
BOOT 1
PWM 2
NC 3
VCC 4
8 UGATE
7 PHASE
6 GND
9 5 LGATE
WDFN-8L 3x3
RT9624BZSP
RT9624B
ZSPYMDNN
RT9624BZSP : Product Number
YMDNN : Date Code
RT9624BZQW
03 YM
DNN
03 : Product Code
YMDNN : Date Code
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
www.richtek.com
2
is a registered trademark of Richtek Technology Corporation.
DS9624B-06 December 2013



Richtek RT9624B
RT9624B
Function Pin Description
SOP-8
Pin No.
SOP-8 (Exposed Pad) /
WDFN-8L 3x3
Pin Name
1 1 BOOT
2 2 PWM
3 3 NC
4 4 VCC
5 5 LGATE
6
6,
9 (Exposed Pad)
GND
7 7 PHASE
8 8 UGATE
Pin Function
Bootstrap Supply for High Side Gate Drive.
PWM Signal Input. Connect this pin to the PWM output of the
controller.
No Internal Connection.
Supply Voltage Input.
Low Side Gate Driver Output. Connect this pin to the Gate of
low side power N-MOSFET.
Ground. The exposed pad must be soldered to a large PCB
and connected to GND for maximum power dissipation.
Connect this pin to the Source of the high side N-MOSFET
and the Drain of the low side N-MOSFET.
High Side Gate Drive Output. Connect this pin to the Gate of
high side power N-MOSFET.
Function Block Diagram
VCC
Internal
VDD
POR
PWM
Tri-State
Detect
Bootstrap
Control
Shoot-Through
Protection
Turn Off
Detection
Shoot-Through
Protection
VCC
BOOT
UGATE
PHASE
LGATE
GND
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
DS9624B-06 December 2013
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
3







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