NCP81172 Datasheet (ON Semiconductor) - 2-Phase Synchronous Buck Controller

NCP81172, 2-Phase Synchronous Buck Controller

Pin Name 1 BST1 2 HG1 3 EN 4 PSI 5 VID 6 VIDBUF 7 REFIN 8 VREF 9 FS 10 FBRTN 11 FB 12 COMP 13 TSNS 14 TALERT# 15 VCC 16 PGOOD 17 HG2 18 BST2 19 PH2 20 LG2 21 PVCC 22 PGND 23 LG1 24 PH1 25 THERM/GND Type Analog Power Analog Output Logic Input Logic Input Logic Input Analog Output Analog Input Analog

NCP81172 2-Phase Synchronous Buck Controller with Integrated Gate Drivers and PWM VID Interface The NCP81172, a general purpose two phase synchronous buck controller, integrates gate drivers and PWM VID interface in a QFN 24 package and provides a compact footprint power management solution for new generation computing processors.

It receives power save command (PSI) from processors and operates in 1 phase diode emulation mode to obtain high efficiency in

NCP81172 Features

* 4.5 V to 24 V Input Voltage Range

* Output Voltage up to 2.0 V with PWM VID Interface

* Differential Output Voltage Sense

* Integrated Gate Drivers

* 200 kHz ~ 800 kHz Switching Frequency

* Power Saving Interface (PSI)

* Power Good Output

* Programmable Over Current