General Description
The RT8168B is a dual single-phase PWM controller with
integrated MOSFET drivers, compliant with Intel IMVP7
Pulse Width Modulation Specification to support both
CPU core and GPU core power. This part adopts G-NAVPTM
(Green-Native AVP), which is a Richtek proprietary topology
derived from finite DC gain compensator in constant ontime control mode. G-NAVPTM makes this part an easy
setting PWM controller to meet all Intel AVP (Active
Voltage Positioning) mobile CPU/GPU requirements. The
RT8168B uses SVID interface to control an 8-bit DAC for
output voltage programming. The built-in high accuracy
DAC converts the received VID code into a voltage value
ranging from 0V to 1.52V with 5mV step voltage. The
system accuracy of the controller can reach 0.8%. The
RT8168B operates in continuous conduction mode or
diode emulation mode, according to the SVID command.
The maximum efficiency can reach up to 90% in different
operating modes according to different load conditions.
This part also features complete fault protection functions including over voltage, under voltage, negative voltage, over current and thermal shutdown. The RT8168B is available in a WQFN-40L 5x5 small footprint package.
