NCP5386 Datasheet, PDF (1/33 Pages) ON Semiconductor – 1/2 Phase Controller for CPU and Chipset Applications

NCP5386, NCP5386A,
NCP5386B
1/2 Phase Controller for
CPU and Chipset
Applications
The NCP5386 is a one− or two−phase buck controller which
combines differential voltage and current sensing, and adaptive
voltage positioning to power both AMD and Intel processors and
chipsets. Dual−edge pulse−width modulation (PWM) combined with
inductor current sensing reduces system cost by providing the fastest
initial response to transient load events. Dual−edge multi−phase
modulation reduces total bulk and ceramic output capacitance
required to satisfy transient load−line regulation.
A high performance operational error amplifier is provided, which
allows easy compensation of the system. The proprietary method of
Dynamic Reference Injection (Patented) makes the error amplifier
compensation virtually independent of the system response to VID
changes, eliminating tradeoffs between overshoot and dynamic VID
performance.
Features
• Meets Intel’s VR 10.0 and 11.0, and AMD Specifications
• No load Intel VR Offset of −19 mV (NCP5386), +20 mV
(NCP5386A), and 0 mV (NCP5386B)
• Dual−Edge PWM for Fastest Initial Response to Transient Loading
• High Performance Operational Error Amplifier
• Supports both VR11 and Legacy Soft−Start Modes
• Dynamic Reference Injection (Patent# 7057381)
• DAC Range from 0.5 V to 1.6 V
• "0.5% System Voltage Accuracy from 1.0 V to 1.6 V
• True Differential Remote Voltage Sensing Amplifier
• Phase−to−Phase Current Balancing
• “Lossless” Differential Inductor Current Sensing
• Differential Current Sense Amplifiers for each Phase
• Adaptive Voltage Positioning (AVP)
• Frequency Range: 100 kHz – 1.0 MHz
• OVP with Resettable, 8 Event Delayed Latch
• Threshold Sensitive Enable Pin for V_TT Sensing
• Power Good Output with Internal Delays
• Programmable Soft−Start Time
• This is a Pb−Free Device*
Applications
• Desktop Processors and Chipsets
• Server Processors and Chipsets
• DDR
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques Reference
Manual, SOLDERRM/D.
http://onsemi.com
1 32
QFN32, 5 x 5*
MN SUFFIX
CASE 485AF
MARKING
DIAGRAMS
1
NCP5386x
AWLYYWWG
*Pin 33 is the thermal pad on the bottom of the device.
NCP5386 = Specific Device Code
x
= Blank, A or B
A
= Assembly Location
WL
= Wafer Lot
YY
= Year
WW
= Work Week
G
= Pb−Free Package
ORDERING INFORMATION
Device
Package
Shipping^†
NCP5386MNR2G* QFN32
2500 /
(Pb−Free) Tape & Reel
NCP5386AMNR2G* QFN32
(Pb−Free)
2500 /
Tape & Reel
NCP5386BMNR2G* QFN32
(Pb−Free)
2500 /
Tape & Reel
*Temperature Range: 0°C to 85°C
†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, 2008
1
May, 2008 − Rev. 1
Publication Order Number:
NCP5386/D