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Numéro de référence | NCP81172 | ||
Description | 2-Phase Synchronous Buck Controller | ||
Fabricant | ON Semiconductor | ||
Logo | |||
1 Page
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 light−load
condition. Operating in high switching frequency up to 800 kHz
allows employing small size inductor and capacitors. The part is able
to support all−ceramic−capacitor applications.
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 Protection
Over Voltage Protection
Under Voltage Protection
Temperature Sense and Alert Output
Thermal Shutdown Protection
QFN−24, 4 x 4 mm, 0.5 mm Pitch Package
This is a Pb−Free Device
Typical Applications
GPU and CPU Power
Graphics Card Applications
Desktop and Notebook Applications
http://onsemi.com
1 24
QFN24
CASE 485L
MARKING DIAGRAM
81172
ALYWG
G
81172
A
L
Y
W
G
= Specific Device Code
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
PINOUT
18 17 16 15 14 13
19 PH2
20 LG2
21 PVCC
22 PGND
23 LG1
24 PH1
25
GND
COMP 12
FB 11
FBRTN 10
FS 9
VREF 8
REFIN 7
123456
(Top View)
ORDERING INFORMATION
Device
Package
Shipping†
NCP81172MNTXG QFN24
(Pb−Free)
4000 / Tape &
Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
Semiconductor Components Industries, LLC, 2013
April, 2013 − Rev. 1
1
Publication Order Number:
NCP81172/D
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Pages | Pages 14 | ||
Télécharger | [ NCP81172 ] |
No | Description détaillée | Fabricant |
NCP81172 | 2-Phase Synchronous Buck Controller | ON Semiconductor |
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