NCP81119 PDF даташит
Спецификация NCP81119 изготовлена «ON Semiconductor» и имеет функцию, называемую «Multiple-Phase Controller». |
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Детали детали
Номер произв | NCP81119 |
Описание | Multiple-Phase Controller |
Производители | ON Semiconductor |
логотип |
27 Pages
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NCP81119
Multiple-Phase Controller
with SVID Interface for
Desktop and Notebook CPU
Applications
The NCP81119 Multi−Phase buck solution is optimized for
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Intel® VR12.5 compatible CPUs with user configurations of 4/3/2/1
phases. The controller combines true differential voltage sensing,
differential inductor DCR current sensing, input voltage
MARKING
DIAGRAM
feed−forward, and adaptive voltage positioning to provide accurately
regulated power for both Desktop and Notebook applications. The
control system is based on Dual−Edge pulse−width modulation
(PWM) combined with DCR current sensing providing the fastest
1
QFN32
CASE 510AT
NCP
81119
ALYWG
G
initial response to dynamic load events at reduced system cost. It has
the capability to shed to single phase during light load operation and
can auto frequency scale in light load conditions while maintaining
excellent transient performance.
High performance operational error amplifiers are provided to
simplify compensation of the system. Patented Dynamic Reference
Injection further simplifies loop compensation by eliminating the need
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb−Free Package
(Note: Microdot may be in either location)
to compromise between closed−loop transient response and Dynamic
VID performance. Patented Total Current Summing provides highly
accurate digital current monitoring.
Features
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 26 of this data sheet.
• Meets Intel VR12.5 Specifications
• Current Mode Dual Edge Modulation for Fastest Initial Response to
Transient Loading
• High Performance Operational Error Amplifier
• Digital Soft Start Ramp
• Dynamic Reference Injection
• Accurate Total Summing Current Amplifier
• Dual High Impedance Differential Voltage and Total
• Vin Feed Forward Ramp Slope
Current Sense Amplifiers
• Phase−to−Phase Dynamic Current Balancing
• “Lossless” DCR Current Sensing for Current Balancing
• Pin Programming for Internal SVID parameters
• Over Voltage Protection (OVP) & Under Voltage
Protection (UVP)
• True Differential Current Balancing Sense Amplifiers
• Over Current Protection (OCP)
for Each Phase
• Adaptive Voltage Positioning (AVP)
• Switching Frequency Range of 280 kHz – 600 kHz
• Startup into Pre−Charged Loads While Avoiding False
OVP
• VR−RDY Output with Internal Delays
• These are Pb−Free Devices
Applications
• Desktop and Notebook Processors
• Power Saving Phase Shedding
© Semiconductor Components Industries, LLC, 2013
August, 2013 − Rev. 1
1
Publication Order Number:
NCP81119/D
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NCP81119
VSN
VSP
DAC
GND
CSREF
DIFFAMP
+−
Error
Amp
Current
Measurement
& Limit
CS
Amp
TSENSE
VRHOT
SDIO
ALERT
SCLK
VRDY
Thermal
Monitor
VSP
VSN
OVP
OVP
SVID Interface
Data
Registers
ADC
VR Ready
Comparator
DAC
DAC
Enable
VSP
VSN
DAC
IPH4
IPH3
IPH2
IPH1
Current
Balance
RAMP1
RAMP2
RAMP3
RAMP4
PWM
Generators
OVP
COMP
Enable
MUX
VSP−VSN
TSENSE
VBOOT
IOUT
IMAX
ADDR
CSN4
CSP4
CSN2
CSP2
CSN3
CSP3
CSN1
CSP1
Enable
Enable
Ramp
Generators
Power State
Stage
UVLO & EN
GND
VCC
ENABLE
NCP81102
Figure 1. Block Diagram for NCP81119
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2
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NCP81119
32 31 30 29 28 27 26 25
ENABLE 1
VCC 2
VR_HOT# 3
SDIO 4
ALERT# 5
SCLK 6
VR_RDY 7
TSENSE 8
NCP81119
24 CSCOMP
23 CSSUM
22 CSREF
21 CSN4
20 CSP4
19 CSN2
18 CSP2
17 CSN3
9 10 11 12 13 14 15 16
Figure 2. NCP81119 Pin Configurations
NCP81119 PIN DESCRIPTIONS
Pin No.
Symbol
Description
1
ENABLE
Logic input. Logic high enables the output and logic low disables the output.
2
VCC
Power for the internal control circuits. A decoupling capacitor is connected from this pin to ground
3
VR_HOT#
Thermal logic output for over temperature
4
SDIO
Serial VID data interface
5
ALERT#
Serial VID ALERT#.
6
SCLK
Serial VID clock
7
VR_RDY
Open drain output. High indicates that the output is regulating
8
TSENSE
Temp Sense input for the multiphase converter
9
PWM4/ROSC
Phase 4 PWM output. A resistance from this pin to ground programs the oscillator frequency
10
PWM2/VBOOT
Phase 2 PWM output. Also as VBOOT input pin to adjust the boot−up voltage. During start up it is
used to program VBOOT with a resistor to ground
11
PWM3/IMAX
Phase 3 PWM output. Also as ICC_MAX Input Pin. During start up it is used to program ICC_MAX
with a resistor to ground
12
PWM1/ADD
Phase 1 PWM output. Also as Address program pin. A resistor to ground on this pin programs the
SVID address of the device
13
DRON
Bidirectional gate drive enable output
14
CSP1
Non−inverting input to current balance sense amplifier for phase 1
15
CSN1
Inverting input to current balance sense amplifier for phase 1
16
CSP3
Non−inverting input to current balance sense amplifier for phase 3
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