Datasheet Summary
3/2-Phase SDPWM Controller with SMBus for VR12
General Description
The uP1674 is a Simulated Digital PWM controller that integrates a 3/2-phase PWM controller. uP1674 accurately reports output voltages and output currents to ply with VR12 specification.
The uP1674 integrates 2 bootstrapped drivers that support 12V + 12V driving capability. 3/2 phase operation is enabled by a logic level PWM output, achieving optimal balance between cost and flexibility.
The uP1674 supports phase adding/dropping that is activated by PSI mand from SVID or by PS state from SMBUS. The uP1674 operates in diode emulation mode at extreme light load condition and achieves maximum efficiency over...