RT9607 Datasheet, PDF (1/15 Pages) Richtek Technology Corporation – Dual Channel Synchronous-Rectified Buck MOSFET Driver

RT9607/A
Dual Channel Synchronous-Rectified Buck MOSFET Driver
General Description
The RT9607/A is a dual power channel MOSFET driver
specifically designed to drive four power N-MOSFETs in a
synchronous-rectified buck converter topology. These
drivers combined with RichTek’ s series of Multi-Phase
Buck PWM controllers provide a complete core voltage
regulator solution for advanced microprocessors.
The RT9607/A can provide flexible gate driving for both
high side and low side drivers. This gives more flexibility
of MOSFET selection.
The output drivers of the part are capble to driver a 3nF
load in 30/40ns rising/falling time with fast propagation
delay from input transition to the gate of the power
MOSFET. This device implements bootstrapping on the
upper gates with only a single external capacitor required
for each power channel. This reduces implementation
complexity and allows the use of higher performance, cost
effective, N-MOSFETs. Adaptive shoot-through protect-ion
is integrated to prevent both MOSFETs from conducting
simultaneously.
The RT9607/A can detect high side MOSFET drain-to-
source electrical short at power on and pull the 12V power
by low side MOS and cause power supply to go into over
current shutdown to prevent damage of CPU.
RT9607 has longer UGATE/LGATE dead time which can
drive the MOSFETs with large gate RC value, avoiding
the shoot-through phenomenon. RT9607A is targeted to
drive small gate RC value MOSFETs and performs better
efficiency.
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
Features
z Drives Four N-MOSFETs
z Adaptive Shoot-Through Protection
z Propagation Delay 40ns
z Support High Switching Frequency
z Fast Output Rise Time
z 5V to 12V Gate-Drive Voltages for Optimal Efficiency
z Tri-State Input for Bridge Shutdown
z Supply Under-Voltage Protection
z RoHS Compliant and 100% Lead (Pb)-Free
Applications
z Core Voltage Supplies for motherboard/desktop PC
microprocessor core power
z High Frequency Low Profile DC-DC Converters
z High Current Low Voltage DC-DC Converters
Ordering Information
RT9607/A
Note :
Package Type
QV : VQFN-16L 3x3 (V-Type)
S : SOP-14
Lead Plating System
P : Pb Free
G : Green (Halogen Free and Pb Free)
Short Dead Time
Long Dead Time
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.
DS9607/A-07 April 2011
www.richtek.com
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