RT9226B
RT9226B is Synchronous PWM Step-Down DC/DC Converter Controller manufactured by Richtek.
Preliminary
Synchronous PWM Step-Down DC/DC Converter Controller
General Description
The RT9226B is a low cost, high-efficiency voltage-mode PWM controller for motherboard power supply application. Synchronous N-Channel MOSFET driver, short-circuit protection, and soft start function are integrated in a single chip. A simple high power buck regulator with shutdown function can be implemented with minimum external ponents.
The RT9226B provides current-limit protection by monitoring the voltage drop across N-Channel MOSFET in over current condition, therefore, eliminates the current sensing resistor and minimizes the efficiency loss. The soft start function reduces the stress...
