MOSFET Driver. RT9624E Datasheet

RT9624E Driver. Datasheet pdf. Equivalent

RT9624E Datasheet
Recommendation RT9624E Datasheet
Part RT9624E
Description Single Phase Synchronous Rectified Buck MOSFET Driver
Feature RT9624E; ® RT9624E Single Phase Synchronous Rectified Buck MOSFET Driver General Description The RT9624E is.
Manufacture Richtek
Datasheet
Download RT9624E Datasheet




Richtek RT9624E
®
RT9624E
Single Phase Synchronous Rectified Buck MOSFET Driver
General Description
The RT9624E is a high frequency, synchronous rectified,
single phase MOSFET driver designed for normal MOSFET
driving applications and high performance CPU VR driving
capabilities.
The RT9624E can be supplied from 4.5V to 13.2V. The
applicable power stage VIN range is from 5V to 24V. The
RT9624E also builds in an internal power switch to replace
external bootstrap diode.
The RT9624E can support switching frequency efficiently
up to 500kHz. The RT9624E has both 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 RT9624E has tri-state
PWM input with shutdown and EN input shutdown
functions, which can force driver to output low UGATE
and LGATE signals.
The RT9624E is available in a small footprint WDFN-8L
3x3 package.
Features
z Drive Two N-MOSFETs
z Shoot Through Protection
z Embedded Bootstrap Diode
z Support High Switching Frequency
z Fast Output Rising Time
z Tri-State PWM Input for Output Shutdown
z Enable Control
z 8-Lead WDFN Package
z RoHS Compliant and Halogen Free
Applications
z Core Voltage Supplies for Desktop, Motherboard CPU
z High Frequency Low Profile DC/DC Converters
z High Current Low Voltage DC/DC Converters
z Core Voltage Supplies for GFX Card
Marking Information
4Q= : Product Code
4Q=YM
DNN
YMDNN : Date Code
Simplified Application Circuit
R1
12V
C1
Chip Enable
PWM
Controller
RT9624E
VCC
BOOT
R2
UGATE
EN PHASE
PWM LGATE
GND
CBOOT
R3
R4
C5 C6
VIN
Q1
L1
VOUT
R5
Q2
C2
C3 C4
Copyright ©2014 Richtek Technology Corporation. All rights reserved.
DS9624E-00 January 2014
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1



Richtek RT9624E
RT9624E
Ordering Information
RT9624E
Package Type
QW : WDFN-8L 3x3 (W-Type)
Lead Plating System
G : Green (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.
Pin Configurations
(TOP VIEW)
PWM 1
GND 2
EN 3
VCC 4
8 BOOT
7 UGATE
6 PHASE
9 5 LGATE
WDFN-8L 3x3
Copyright ©2014 Richtek Technology Corporation. All rights reserved.
www.richtek.com
2
is a registered trademark of Richtek Technology Corporation.
DS9624E-00 January 2014



Richtek RT9624E
RT9624E
Function Pin Description
Pin No.
Pin Name
Pin Function
1
PWM
PWM Signal Input. Connect this pin to the PWM output of the controller.
2, 9 (Exposed Pad) GND
Ground. The exposed pad must be soldered to a large PCB and connected to
GND for maximum power dissipation.
3 EN
Enable Control Input (Active High). When this pin is low, both UGATE and
LGATE are driven to low.
4
VCC
Supply Voltage Input.
5
LGATE
Low-Side Gate Driver Output. Connect this pin to the Gate of low-side power
N-MOSFET.
6
PHASE
Connect this pin to the Source of the high-side N-MOSFET and the Drain of the
low side N-MOSFET.
7
UGATE
High-Side Gate Drive Output. Connect this pin to the Gate of high-side power
N-MOSFET.
8
BOOT
Bootstrap Supply for High-Side Gate Drive.
Function Block Diagram
EN VCC
Internal
VDD
Enable
Detect
POR
PWM
Tri-State
Detect
Bootstrap
Control
Shoot-Through
Protection
Turn Off
Detection
Shoot-Through
Protection
VCC
BOOT
UGATE
PHASE
LGATE
GND
Copyright ©2014 Richtek Technology Corporation. All rights reserved.
DS9624E-00 January 2014
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
3







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