uP1651
Description
Features
The u P1651 is a VR12.5 pliant PWM controller that surpports 1/2/3/4-phase operation. This device integrates 3 MOSFET gate drivers with embedded bootstrap diode, and provides 1 PWM output to support 4 phase operation. To ply with VR12.5 specification, the u P1651 accurately reports output current and VR temperature.
The u P1651 provides programmable 1/2/3/4 phase operation. u P1651 integrates 3 bootstrapped drivers that support 12V + 12V driving capability. 1/2/3/4 phase operation is enabled by a logic level ISENx output, achieving optimal balance between cost and flexibility.
The u P1651 supports automatic phase adding/dropping that is activated by PSI mand from SVID or H/W PSI setting. The u P1651 operates in diode emulation mode at extreme light load condition, yielding maximum efficiency over entire load current range.
Other features include adjustable soft start, under/over voltage protection, over current protection and thermal shutdown. The u P1651 is available...
