NCP4200 PDF даташит
Спецификация NCP4200 изготовлена «ON Semiconductor» и имеет функцию, называемую «Programmable Multi-Phase Synchronous Buck Converter». |
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Детали детали
Номер произв | NCP4200 |
Описание | Programmable Multi-Phase Synchronous Buck Converter |
Производители | ON Semiconductor |
логотип |
30 Pages
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NCP4200
Programmable Multi-Phase
Synchronous Buck
Converter with I2C
Interface
The NCP4200 is an integrated power control IC with an I2C
interface. It combines a highly efficient, multi−phase, synchronous
buck switching regulator controller with an I2C interface, which
enables digital programming of key system parameters to optimize
system performance and provide feedback to the system.
It uses an internal 8−bit DAC to read a Voltage Identification (VID)
code directly from the processor, which is used to set the output
voltage between 0.375 V and 1.6 V.
This device uses a multi−mode PWM architecture to drive the
logic−level outputs at a programmable switching frequency that can
be optimized for VR size and efficiency. The NCP4200 can be
programmed to provide 2−, 3−, or 4−phase operation, allowing for the
construction of up to four complementary buck−switching stages. The
NCP4200 supports PSI, which is a Power Save Mode.
The NCP4200 includes an I2C interface which can be used to
program system set points such as voltage offset, load−line and phase
balance and output voltage. Key system performance data, such as
CPU current, CPU voltage, and power and fault conditions can also be
read back over the I2C from the NCP4200.
The NCP4200 operates over the industrial temperature range of
−40°C to +125°C and is available in a 40 Lead QFN package.
Features
• Selectable 2−, 3−, or 4−Phase Operation at Up to 1.5 MHz per Phase
• I2C Interface − Enables Digital Programmability of Set Points and
Read−back of Monitored Values
• Logic−Level PWM Outputs for Interface to External High
Power Drivers
• Fast−Enhanced PWM for Excellent Load Transient Performance
• Active Current Balancing Between All Output Phases
• Built−In Power−Good/Crowbar Blanking Supports On−The−Fly
(OTF) VID Code Changes
• Digitally Programmable 0.375 V to 1.6 V Output Supports Both
VR11 and VR11.1 Specifications
• Programmable Short−Circuit Protection with Programmable
Latchoff Delay
• Supports PSI – Power Saving Mode During Light Loads
Applications
• Desktop PC Power Supplies for VRM Modules
© Semiconductor Components Industries, LLC, 2012
July, 2012 − Rev. 5
1
http://onsemi.com
1 40
QFN40 6x6
CASE 488AR
MARKING DIAGRAM
NCP4200
AWLYYWWG
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = Pb−Free Package
PIN ASSIGNMENT
VCC3
ALERT
FAULT
SDA
SCL
EN
GND
IMON
IREF
RT
1
2
3
4
5
6
7
8
9
10
PIN 1
INDICATOR
NCP4200
TOP VIEW
30 VCC
29 PWM1
28 PWM2
27 PWM3
26 PWM4
25 SW1
24 SW2
23 SW3
22 SW4
21 OD1
ORDERING INFORMATION
Device
Package
Shipping†
NCP4200MNR2G QFN40 2500/Tape & Reel
(Pb−Free)
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
Publication Order Number:
NCP4200/D
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NCP4200
ALERT 2
FAULT 3
COMPARATOR
GND 7
EN 6
STATUS
REGISTERS
850mV
–
+
Overvoltage
Threshold
CSREF
Undervoltage
Threshold
PWRGD 40
DELAY
SCL SDA
54
RT RAMPADJ
10 11
VCC
30
VCC3
1
LIMIT
REGISTERS
I2C
INTERFACE
SHUUTVDLOOWN
OSCILLATOR
DIGITAL CONFIG
& VALUE CONTROL
REGISTERS
SHUNT
REGULATOR
3.3V
REGULATOR
SET
RESET
EN
20 ODN
39 PSI
21 OD1
29 PWM1
ADC
CONTROL
CURRENT
BALANCING
CIRCUIT
+
–CMP
+
–CMP
+
–CMP
RESET
RESET
2 / 3 / 4−PHASE
DRIVER LOGIC
RESET
28 PWM2
27 PWM3
+
CMP
–
RESET
26 PWM4
–
+
+
CROWBAR
CURRENT
LIMIT
25 SW1
– 24 SW2
23 SW3
22 SW4
ILIMITFS 19
IREF 9
COM 14
TRDET 12
CONTROL
CURRENT
MEASUREMENT
AND LIMIT
CONTROL
18 CPSCOM
16 CSREF
17 CSSUM
8 IMON
15 FB
Voltage
Threshold
PRECISION
REFERENCE
NCP4200
VID DAC
CONTROL
+
+
–
–
BOOT VOLTAGE &
SOFT START CONTROL
13
FBRTN
38 37 36 35 34
33 32
31
VID0 VID1 VID2 VID3 VID4 VID5 VID6 VID7
Figure 1. Simplified Block Diagram
http://onsemi.com
2
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NCP4200
Figure 2. Application Circuit
http://onsemi.com
3
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Номер в каталоге | Описание | Производители |
NCP4200 | Programmable Multi-Phase Synchronous Buck Converter | ON Semiconductor |
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NCP4206 | VR11.1 Digital Programmable Multi-Phase Synchronous Buck Converter | ON Semiconductor |
NCP4208 | VR11.1 Digital Programmable 8-Phase Synchronous Buck Converter | ON Semiconductor |
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