Description
The SC473 is a single-phase chip, high-performance PWM controller designed to power advanced graphic cores. Onchip support is provided that includes slew-rate controlled VID transitions.
The SC473 implements hysteretic control technology which provides the fastest possible transient response while avoiding the stability issues inherent to classical PWM controllers. Eliminating the sense resistors reduces costs and PCB area, plus increases system efficiency. Integrated SmartDriver™ technology initially turns on the high-side driver with ‘soft’ drive to reduce ringing, EMI, and capacitive turn-on of the low side MOSFET, while also increasing overall efficiency.
Features
✦ Single-Phase Solution with Integrated Drivers
✦ Hysteretic Control for Fast Transient Response
✦ SmartDriver™ for reduced EMI
✦ True Differential Remote (die) Sensing
✦ VID Programmed Voltage
✦ Delayed Power Good Signal with Blanking
✦ Programmable Soft-Start and DAC Slew Control
✦ Programmable OCP Threshold
✦ Supports all Ceramic Decoupling Solutions
✦ 24-Pin MLP (4x4)
✦ Lead-Free Package
✦ RoHS and WEEE compliant
Applications
✦ High Performance Graphics
✦ Embedded Applications