RT8848A Overview
Description
The RT8848A/B is a 8/7/6/5/4/3/2/1 multi-phase synchronous Buck controller which is optimized for high performance graphic microprocessor and support nVidia OVR4i+ spec with PWM-VID interface. The RT8848A/B adopts AC G-NAVPTM (Green Native AVP) which is Richtek's proprietary topology derived from finite DC gain of internal GM amplifier with current mode control.
Key Features
- Multi-Phase PWM Controller
- PWM-VID Dynamic Voltage Control
- Support 1.8V PWM-VID Interface
- Power State Indicator LPC (Low Phase Count), PSI = Low APS (Auto Phase Shedding), PSI = Mid HPC (High Phase Count), PSI = High
- External Reference Input Control
- 8/7/6/5/4/3/2/1 Phase Hardware Setting
- Adjustable Soft-Start Time
- Adjustable Switching Frequency
- Adjustable Phase Current Balance
- Support Standby Mode
