MOSFET Driver. RT9610A Datasheet

RT9610A Driver. Datasheet pdf. Equivalent

RT9610A Datasheet
Recommendation RT9610A Datasheet
Part RT9610A
Description High Voltage Synchronous Rectified Buck MOSFET Driver
Feature RT9610A; ® RT9610A/B High Voltage Synchronous Rectified Buck MOSFET Driver for Notebook Computer General De.
Manufacture Richtek
Datasheet
Download RT9610A Datasheet




Richtek RT9610A
®
RT9610A/B
High Voltage Synchronous Rectified Buck MOSFET Driver
for Notebook Computer
General Description
The RT9610A/B is a high frequency, dual MOSFET driver
specifically designed to drive two power N-MOSFETS in
a synchronous-rectified buck converter topology. It is
especially suited for mobile computing applications that
require high efficiency and excellent thermal performance.
This driver, combined with Richtek's series of multi-phase
Buck PWM controllers, provides a complete core voltage
regulator solution for advanced microprocessors.
The drivers are capable of driving a 3nF load with fast
rising/falling time and fast propagation delay. This device
implements bootstrapping on the upper gates with only a
single external capacitor. This reduces implementation
complexity and allows the use of higher performance, cost
effective, N-MOSFETs. Adaptive shoot through protection
is integrated to prevent both MOSFETs from conducting
simultaneously.
The RT9610A/B is available in WQFN-8L 3x3 and
WDFN-8L 2x2 Packages.
Features
z Drives Two N-MOSFETs
z Adaptive Shoot-Through Protection
z 0.5Ω On-Resistance, 4A Sink Current Capability
z Supports High Switching Frequency
z Tri-State PWM Input for Power Stage Shutdown
z Output Disable Function
z Integrated Boost Switch
z Low Bias Supply Current
z VCC POR Feature Integrated
z Small 8-Lead WQFN and WDFN Packages
z RoHS Compliant and Halogen Free
Applications
z Core Voltage Supplies for Intel® / AMD® Mobile
Microprocessors
z High Frequency Low Profile DC/DC Converters
z High Current Low Output Voltage DC/DC Converters
z High Input Voltage DC/DC Converters
Simplified Application Circuit
VCC
Chip Enable
PWM
RT9610A/B
VCC UGATE
BOOT
PHASE
EN
PWM LGATE
GND
VIN
VCORE
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
DS9610A/B-05 September 2013
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1



Richtek RT9610A
RT9610A/B
Ordering Information
RT9610A/B
Package Type
QW : WQFN-8L 3x3 (W-Type)
QW : WDFN-8L 2x2 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Z : ECO (Ecological Element with
Halogen Free and Pb free)
A : WQFN-8L 3x3
B : WDFN-8L 2x2
Pin Configurations
(TOP VIEW)
BOOT 1
PWM 2
87
GND
9
34
6 EN
5 VCC
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.
WQFN-8L 3x3
RT9610A
EN 1
PHASE 2
UGATE 3
BOOT 4
8 VCC
7 LGATE
6 GND
9 5 PWM
Marking Information
RT9610AGQW
26= : Product Code
26=YM
DNN
YMDNN : Date Code
WDFN-8L 2x2
RT9610B
RT9610BGQW
20 : Product Code
20W
W : Date Code
RT9610AZQW
26 YM
DNN
26 : Product Code
YMDNN : Date Code
RT9610BZQW
20 : Product Code
20W
W : Date Code
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
www.richtek.com
2
is a registered trademark of Richtek Technology Corporation.
DS9610A/B-05 September 2013



Richtek RT9610A
RT9610A/B
Functional Pin Description
Pin No.
Pin Name
WQFN-8L 3x3 WDFN 8L 2x2
1 4 BOOT
2 5 PWM
3,
9 (Exposed Pad)
6,
9 (Exposed Pad)
GND
4 7 LGATE
5 8 VCC
6 1 EN
7 2 PHASE
8 3 UGATE
Pin Function
Floating Bootstrap Supply Pin for Upper Gate Drive. Connect
the bootstrap capacitor between this pin and the PHASE pin.
The bootstrap capacitor provides the charge to turn on the
upper MOSFET.
Control Input for Driver. The PWM signal can enter three
distinct states during operation. Connect this pin to the PWM
output of the controller.
Ground. The exposed pad must be soldered to a large PCB
and connected to GND for maximum power dissipation.
Lower Gate Drive Output. Connect to the gate of the low side
power N-MOSFET.
Input Supply Pin. Connect this pin to a 5V bias supply. Place a
high quality bypass capacitor from this pin to GND.
Enable Pin. When low, both UGATE and LGATE are driven low
and the normal operation is disabled.
Switch Node. Connect this pin to the source of the upper
MOSFET and the drain of the lower MOSFET. This pin
provides a return path for the upper gate driver.
Upper Gate Drive Output. Connect to the gate of high side
power N-MOSFET.
Function Block Diagram
VCC
POR
EN
PWM
VCC
Control
Logic
R
Tri-State
Detect
R
Shoot-Through
Protection
VCC
BOOT
UGATE
PHASE
LGATE
GND
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
DS9610A/B-05 September 2013
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
3







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