NCP5392Q Datasheet, PDF (1/30 Pages) ON Semiconductor – 2/3/4-Phase Controller for CPU Applications

NCP5392Q
2/3/4-Phase Controller for
CPU Applications
The NCP5392Q provides up to a four−phase buck solution which
combines differential voltage sensing, differential phase current sensing,
and adaptive voltage positioning to provide accurately regulated power
for Intel processors. Dual−edge pulse−width modulation (PWM)
combined with inductor current sensing reduces system cost by
providing the fastest initial response to dynamic load events. Dual−edge
multiphase modulation reduces the total bulk and ceramic output
capacitance required to meet transient regulation specifications.
A high performance operational error amplifier is provided to
simplify compensation of the system. Dynamic Reference Injection
further simplifies loop compensation by eliminating the need to
compromise between closed−loop transient response and Dynamic
VID performance.
In addition, NCP5392Q provides an automatic power saving
feature (Auto−PSI). When Auto−PSI function is enabled, NCP5392Q
will automatically detect the VID transitions and direct the Vcore
regulator in or out of low power states. As a result, the best efficiency
scheme is always chosen.
Features
• Meets Intel’s VR11.1 Specifications
• Dual−edge PWM for Fastest Initial Response to Transient Loading
• High Performance Operational Error Amplifier
• Internal Soft Start
• Dynamic Reference Injection (Patent #US07057381)
• DAC Range from 0.375 V to 1.6 V
• DAC Feed Forward Function (Patent Pending)
• ±0.5% DAC 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)
• Oscillator Frequency Range of 100 kHz – 1 MHz
• Latched Over Voltage Protection (OVP)
• Guaranteed Startup into Pre−Charged Loads
• Threshold Sensitive Enable Pin for VTT Sensing
• Power Good Output with Internal Delays
• Thermally Compensated Current Monitoring
• Automatic Power Saving (AUTO PSI Mode)
• Compatible to PSI Power Saving Requirements
• This is a Pb−Free Device
Applications
• Desktop Processors
http://onsemi.com
MARKING
DIAGRAM
1 40
40 PIN QFN, 6x6
MN SUFFIX
CASE 488AR
1
NCP5392Q
AWLYYWWG
NCP5392Q = Specific Device Code
A
= Assembly Location
WL
= Wafer Lot
YY
= Year
WW
= Work Week
G
= Pb−Free Package
*Pin 41 is the thermal pad on the bottom of the device.
ORDERING INFORMATION
Device
Package Shipping^†
NCP5392QMNR2G* QFN−40 2500/Tape & Reel
(Pb−Free)
*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, 2009
1
June, 2009 − Rev. 0
Publication Order Number:
NCP5392Q/D