NCP81250 PDF даташит
Спецификация NCP81250 изготовлена «ON Semiconductor» и имеет функцию, называемую «Single-Phase Voltage Regulator». |
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Детали детали
Номер произв | NCP81250 |
Описание | Single-Phase Voltage Regulator |
Производители | ON Semiconductor |
логотип |
18 Pages
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NCP81250
Single-Phase Voltage
Regulator with SVID
Interface for Computing
Applications
High Switching Frequency, High
Efficiency, Integrated Power MOSFETs
The NCP81250, a single−phase synchronous buck regulator,
integrates power MOSFETs to provide a high−efficiency and
compact−footprint power management solution for new generation
computing CPUs. The device is able to deliver up to 14 A TDC output
current on an adjustable output with SVID interface. Operating in high
switching frequency up to 1.2 MHz allows employing small size
inductors and capacitors while maintaining high efficiency due to
integrated solution with high performance power MOSFETs.
Current−mode RPM control with feedforward from both input power
supply and output voltage ensures stable operation over wide
operation condition. The NCP81250 is in a QFN48 6 x 6 mm package.
Features
• Meets Intel® Server Specifications
• 5 V to 20 V Input Voltage Range
• 0.9 V/1.35 V Fixed Boot Voltage
• Adjustable Output Voltage with SVID Interface
• Integrated Gate Driver and Power MOSFETs
• Up to 14 A TDC Output Current
• 500 kHz ~ 1.2 MHz Switching Frequency
• Current−Mode RPM Control
• Programmable SVID Address and ICCMax
• Programmable DVID Feed−Forward to Support Fast DVID
• Feedforward Operation for Input Supply Voltage and Output Voltage
• Output Over−Voltage and Under−Voltage Protections
• External Current Limitation Programming with Inductor Current
Sense
• QFN48, 6 x 6 mm, 0.4 mm Pitch Package
• This is a Pb−Free Device
Typical Applications
• Server Applications
www.onsemi.com
MARKING
DIAGRAM
1 48
QFN48
CASE 485CJ
1
NCP81250
AWLYYWWG
NCP81250 = Specific Device Code
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = Pb−Free Package
ORDERING INFORMATION
Device
Package Shipping†
NCP81250MNTXG
QFN48 2500 / Tape &
(Pb−Free)
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, 2015
September, 2015 − Rev. 1
1
Publication Order Number:
NCP81250/D
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NCP81250
48 47 46 45 44 43 42 41 40 39 38 37
1 VRHOT#
2 SDIO
3 ALERT#
4 SCLK
5 GND
6 VRRDY
7 VIN
8 BST
9 GH
10 SW
11 VIN
12 VIN
VIN
50
GND
49
SW
51
IOUT 36
IMAX 35
TSENSE 34
VCCP 33
GND 32
VBOOT 31
GL 30
SW 29
SW 28
SW 27
SW 26
SW 25
13 14 15 16 17 18 19 20 21 22 23 24
Figure 1. Pin Configuration
(Top View)
VIN
+5V
VIN
PGND
VCCP
BST
GH
SW
SW
GL
VCC
ILIM
GND
CSCOMP
EN
VRHOT#
SDIO
ALERT#
SCLK
VRRDY
TSENSE
NCP81250
CSSUM
CSREF
VBOOT
COMP
FB
IMAX
FREQ
IOUT
DIFFOUT
VSP
VSN
VOUT
Figure 2. Typical Application Circuit
www.onsemi.com
2
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VCC
EN
GND
VRRD
Y
VRH
OT#
TSEN
SE
FREQ
VBO
OT
IMAX
SDIO
SCLK
ALE
RT#
NCP81250
VCCP
BST
VIN
GH
VIN
UVLO
Gate Drive
VCCP
SW
Control Logic
&
Protections
&
VR Ready
DAC
VSP−VSN
OCP
Thermal
Management
TSENSE
PWM
PWM
Control
PGND
GL
IMON
Current Measurement
OCP
and Limit
IOUT
ILIM
VCS CSREF CSR
EF
CSS
UM
Frequency
&
VBOOT
Detection
VIN DAC
CSCOMP CSC
OMP
VSP−VSN
VBOOT
IOUT
IMAX
TSENSE
MUX
ADC
COMP
Vref
1.3V
COMP
FB
DIFF
OUT
SVID Interface
Registers
DAC
DAC
DVID
FeedForward
Differential
Amplifier
Vref
DAC
VSP
VSN
Figure 3. Functional Block Diagram
www.onsemi.com
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