NCP81248 PDF даташит
Спецификация NCP81248 изготовлена «ON Semiconductor» и имеет функцию, называемую «Three-Rail Controller». |
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Детали детали
Номер произв | NCP81248 |
Описание | Three-Rail Controller |
Производители | ON Semiconductor |
логотип |
27 Pages
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NCP81248
Three-Rail Controller with
Intel Proprietary Interface
for IMVP8 CPU Applications
The NCP81248 contains a two−phase, and two single−phase buck
regulator controllers optimized for Intel IMVP8 compatible CPUs.
www.onsemi.com
The two−phase controller combines true differential voltage
sensing, differential inductor DCR current sensing, input voltage
feed−forward, and adaptive voltage positioning to provide accurately
regulated power for IMVP8 CPU.
MARKING
DIAGRAM
The two single−phase controllers make use of ON Semiconductor’s
patented high performance RPM operation. RPM control maximizes
transient response while allowing smooth transitions between
discontinuous frequency scaling operation and continuous mode full
power operation. The single−phase rails have a low offset current
1 48
QFN48
CASE 485BA
NCP81248
FAWLYYWW
G
monitor amplifier with programmable offset compensation for high
accuracy current monitoring.
NCP81243 = Specific Device Code
F = Wafer Fab Code
Features Common to All Rails
• Vin Range 4.5 V to 25 V
A = Assembly Location
WL = Wafer Lot
YY = Year
• Startup into Pre−Charged Loads While Avoiding False OVP
• Digital Soft Start Ramp
WW = Work Week
G = Pb−Free Package
• Adjustable Vboot (except Rail3)
• High Impedance Differential Output Voltage Amplifiers
ORDERING INFORMATION
• Dynamic Reference Injection
Device
Package
Shipping
• Programmable Output Voltage Slew Rates
• Dynamic VID Feed−Forward
• Differential Current Sense Amplifiers for Each Phase
• Programmable Adaptive Voltage Positioning (AVP)
• Switching Frequency Range of 200 kHz –1.2 MHz
NCP81248MNTXG QFN48 2500 / Tape &
(Pb−Free)
Reel
†For information on tape and reel specifications, in-
cluding part orientation and tape sizes, please refer
to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
• Digitally Stabilized Switching Frequency
• UltraSonic Operation
Single−phase Rail Features
• Supports Intel proprietary interface Addresses 00, 01,
02 and 03
Two−phase Rail Features
• Supports Intel proprietary interface Addresses 00 and
01
• Current Mode Dual Edge Modulation for Fastest Initial
• High Performance RPM Control System
• Low Offset IOUT Monitor
• Zero Droop Capable
Response to Transient Loading
• High Performance Operational Error Amplifier
Other Features
• PSYS Input Monitor
• Accurate Total Summing Current Amplifier
• Thermal Monitors for Three Intel proprietary interface
• Phase−to−Phase Dynamic Current Balancing
• Power Saving Phase Shedding
Addresses
• These Devices are Pb−Free, Halogen Free/BFR Free
and are RoHS Compliant
© Semiconductor Components Industries, LLC, 2016
July, 2016 − Rev. 1
1
Publication Order Number:
NCP81248/D
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NCP81248
IOUT_2ph 1
DIFFOUT_2ph 2
FB_2ph 3
COMP_2ph 4
ILIM_2ph 5
CSCOMP_2ph 6
CSSUM_2ph 7
CSREF_2ph 8
CSP2_2ph 9
CSP1_2ph 10
TSENSE_2ph 11
VRMP 12
NCP81248
(TOP VIEW)
Tab: GROUND
36 PWM_1b
35 DRVON
34 SCLK
33 ALERT#
32 SDIO
31 VR_HOT#
30 IOUT_1a
29 CSP_1a
28 CSN_1a
27 ILIM_1a
26 COMP_1a
25 VSN_1a
NCP81248
IMVP8
Figure 1.
NCP81382
DrMOS
NCP81382
DrMOS
NCP81382
DrMOS
NCP81382
DrMOS
Vcc_Rail1
Vcc_Rail2
Vcc_Rail3
Intel[
SVID
Figure 2. Typical DrMOS Application Diagram
www.onsemi.com
2
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NCP81248
VRHOT#
PSYS
VCCIO VCCIO
SDIO
ALERT#
SCLK
VIN
VRMP
VR_RDY
EN
COMP_1a
ILIM_1a
IOUT_1a
DIFFOUT_2ph
FB_2ph
COMP_2ph
IOUT_2ph
ROSC_COREGT
ROSC_SAUS
ICCMAX_2ph
ICCMAX_1a
ICCMAX_1b
VCC
TSENSE_1ph
PWM_1a
DRVON
CSP_1a
CSN_1a
VSP_1a
VSN_1a
TSENSE_2ph
PWM1_2ph
CSP1_2ph
CSREF_2ph
CSP2_2ph
CSSUM_2ph
ILIM_2ph
CSCOMP_2ph
PWM2_2ph
VSP_2ph
VSN_2ph
ADDR_VBOOT
COMP_1b
ILIM_1b
IOUT_1b
GROUND
PWM_1b
CSP_1b
CSN_1b
VSP_1b
VSN_1b
5V
5V
t
5V
t
5V
t
5V
Figure 3. Application Schematic
VIN
VCCD BOOT
VCC
PHASE
ZCD_EN VSW
SMOD#
NCP81382
PWM
DISB#
VIN
VCCD BOOT
VCC
PHASE
ZCD_EN VSW
SMOD#
NCP81381
PWM
DISB#
VIN
VCCD BOOT
VCC
PHASE
ZCD_EN VSW
SMOD#
NCP81381
PWM
DISB#
VIN
VCCD BOOT
VCC
PHASE
ZCD_EN VSW
SMOD#
NCP81380
PWM
DISB#
VCC_Rail1
t
SKT_SNS +
SKT_SNS −
VCC_Rail2
SKT_SNS +
SKT_SNS −
VCC_Rail3
t
SKT_SNS +
SKT_SNS −
www.onsemi.com
3
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