ADP3191AJRUZ-RL DESCRIPTION
The ADP3191/ADP3191A1 are highly efficient, multiphase,synchronous buck switching regulator controllers optimized forconverting a 5 V or 12 V main supply into the core supply voltagerequired by high performance Intel processors. They use aninternal 6-bit DAC to read a voltage identification (VID) codedirectly from the processor, which is used to set the outputvoltage between 0.8375 V and 1.6 V. The devices use a multimodePWM architecture to drive the logic-level outputs at a programmable switching frequency that can be optimized for VR sizeand efficiency. The phase relationship of the output signals canbe programmed to provide 2-, 3-, or 4-phase operation, allowingfor the construction of up to four complementary buckswitching stages.
ADP3191AJRUZ-RL FEATURES
Selectable 2-, 3-, or 4-phase operation at up to
1 MHz per phase
±14.5 mV worst-case differential sensing error
over temperature
Logic-level PWM outputs for interface to external
high power drivers
PWM Flex-ModeTM architecture for excellent load
transient performance
Active current balancing between all output phases
Built-in power good/crowbar blanking supports on-the-fly
VID code changes
6-bit digitally programmable 0.8375 V to 1.6 V output
Programmable short circuit protection with programmable
latch-off delay
ADP3191AJRUZ-RL APPLICATIONS
Desktop PC power supplies for
Next-generation Intel? processors
VRM modules
Games consoles
