RT9603CS RICHTEK [Richtek Technology Corporation], RT9603CS Datasheet
RT9603CS
Available stocks
Related parts for RT9603CS
RT9603CS Summary of contents
Page 1
Synchronous-Rectified Buck MOSFET Drivers General Description The RT9603 is a high frequency, dual MOSFET drivers specifically designed to drive two power N-Channel MOSFETs in a synchronous-rectified buck converter topology. The device combined with the RT924x series of multi-phase PWM controllers ...
Page 2
RT9603 Typical Application Circuit +12V 1N4148 4 VCC C1 1uF 3 NC PWM 2 IN INPUT Note: The traces that run from the controller ISPx and ISNx pins, should be run together next to each other and ...
Page 3
Function Block Diagram Internal IN Timing Diagram IN DRVH DRVL T FDRVL T PDDRVL DS9603-00 November 2003 Preliminary VCC 5V Shoot-Through Protection R Control Power-On OVP Logic R Shoot-Through Protection T RDRVH RT9603 BST DRVH SW VCC DRVL PGND T ...
Page 4
RT9603 Absolute Maximum Ratings Supply Voltage (V ) ------------------------------------------------------------------------------------ 15V l CC BST to SW ------------------------------------------------------------------------------------------------ 15V GND ----------------------------------------------------------------------------------------------- 4V to 15V l PWM Input Voltage ------------------------------------------------------------------------------------- GND - 0. DRVH ------------------------------------------------------------------------------------------------------ V l ...
Page 5
Parameter Output Upper Drive Source Upper Drive Sink Lower Drive Source Lower Drive Sink Note 1. Stresses beyond those listed under stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in ...
Page 6
RT9603 Applications Information The RT9603 is designed to drive both high side and low side N-Channel MOSFET through externally input PWM control signal. It has power-on protection function which held DRVH and DRVL low before VCC up across the rising ...
Page 7
Before driving the gate of the high side MOSFET up to 12V (or 5V), the low side MOSFET has to be off; and the high side MOSFET is turned off before the low side is turned on. From Figure 1, ...
Page 8
RT9603 1N4148 VCC BST DRVH SW VCC DRVL PGND Figure 3. Part of Bootstrap Circuit of RT9603 In practice, a low value capacitor C charging that could damage the IC. Therefore to minimize the risk of overcharging and reducing the ...
Page 9
Over-Voltage Protection Function at Power-On An unique feature of the RT9603 driver is the addition of over-voltage protection in the event of upper MOSFET direct shorted before power-on. The RT9603 detects the fault condition during initial start-up, the internal power- ...
Page 10
RT9603 Outline Dimension Symbol RICHTEK TECHNOLOGY CORP. Headquarter 5F, No. 20, Taiyuen Street, Chupei City Hsinchu, Taiwan, R.O.C. Tel: (8863)5526789 Fax: (8863)5526611 www.richtek.com 10 Preliminary ...