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AMD SVI2 Mobile CPU
AMD SVI2 Mobile CPU
Laptop Computer
3/2/1-Phase (VDD) + 2/1/0-Phase (VDDNB) PWM Controller
3/2/1-Phase (VDD) + 2/1/0-Phase (VDDNB) PWM Controller
3 Embedded MOSFET Drivers
G-NAVPTM Topology
Support Dynamic Load-Line and Zero Load-Line
Diode Emulation Mode at Light Load Condition
SVI2 Interface to Comply with AMD Power Management Protocol
Built-In ADC for VOUT and IOUT Reporting
Immediate OV
UV and NV Protections and UVLO
Programmable Dual OCP Mechanism
0.5% DAC Accuracy
Fast Transient Response
Power Good Indicator
Over-Current Indicator
Dual-Output PWM Controller with 3 Integrated Drivers for AMD SVI2 Mobile CPU ,Power Supply
The RT3663BM is a 3 + 2 phases PWM controller, and is compliant with AMD SVI2 ,Voltage Regulator Specification to support both CPU core (VDD) and Northbridge ,portion of the CPU (VDDNB). The RT3663BM features CCRCOT (Constant Current ,Ripple Constant On-Time) with G-NAVP (Green-Native AVP), which is Richtek's ,proprietary topology. The G-NAVP makes it an easy setting controller to meet ,all AMD AVP (Adaptive Voltage Positioning) VDD/VDDNB requirements. The droop is ,easily programmed by setting the DC gain of the error amplifier. With proper ,compensation, the load transient response can achieve optimized AVP ,performance. The controller also uses the interface to issue VOTF Complete and ,to send digitally encoded voltage and current values for the VDD and VDDNB ,domains. It can operate in single phase and diode emulation mode and reach up ,to 90% efficiency in different modes according to different loading conditions. ,The RT3663BM provides special purpose offset capabilities by pin setting. The ,RT3663BM also provides power good indication, over-current indication (OCP_L) ,and dual OCP mechanism for AMD SVI2 CPU core and NB. It also features complete ,fault protection functions including over-voltage, under-voltage and ,negative-voltage protections.
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