NCP5395G Datasheet, PDF (1/25 Pages) ON Semiconductor – On Board Gate Drivers for CPU Applications

NCP5395G
2/3/4-Phase Controller with
On Board Gate Drivers for
CPU Applications
The NCP5395G 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 both Intel and AMD processors. It also receives
power saving command (PSI) from CPU, and operates in a single
phase emulation diode mode to obtain a high efficiency at light load.
Dual−edge pulse−width modulation (PWM) combined with precise
inductor current sensing provides the fastest initial response to
dynamic load events both in power saving and normal modes.
Dual−edge multiphase modulation reduces the total bulk and ceramic
output capacitance required therefore reducing the system cost to meet
transient regulation specifications.
The on board gate drivers includes adaptive non overlap and power
saving operation. A high performance operational error amplifier is
provided to simplify compensation of the system. Patented Dynamic
Reference Injection further simplifies loop compensation by
eliminating the need to compromise between closed−loop transient
response and Dynamic V_ID performance.
Features
• Meets Intel’s VR11.1 and AMD’s 6 Bit Code Specifications
• Enhanced Power Saving Function
• Internal Soft Start
• Dual−edge PWM for Fastest Initial Response to Transient Loading
• High Performance Operational Error Amplifier
• Dynamic Reference Injection (Patent #US07057381)
• DAC Range from 0.5 V to 1.6 V
• DAC Feed Forward Function (Patient 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
• Accurate Current Monitoring (IMON)
• Differential Current Sense Amplifiers for Each Phase
• Adaptive Voltage Positioning (AVP)
• Oscillator Frequency Range of 125 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
• Output Disable Control Turn Off of Both Phase Pair MOSFETs
• Thermally Compensated Current Monitoring
• Adaptive−Non−Overlap Gate Drive Circuit
• Thermal Shutdown Protection • This is a Pb−Free Device
http://onsemi.com
QFN48, 7x7
CASE 485AJ
1 48
MARKING DIAGRAM
48
1
NCP5395G
AWLYYWWG
A
= Assembly Location
WL
= Wafer Lot
YY
= Year
WW
= Work Week
G
= Pb−Free Package
48
1
BG3
PSI
VID0
VID1
VID2
VID3
VID4
VID5
VID6
VID7/AMD
ROSC
ILIM
AGND
Down−bonded to
Exposed Flag
BG1
G4
VRRDY
EN
CS1N
CS1P
CS2N
CS2P
CS3N
CS3P
CS4N
CS4P
ORDERING INFORMATION
Device
Package
Shipping^†
NCP5395GMNR2G QFN48 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.
Applications
• Graphic Cards, Desktop Processors
© Semiconductor Components Industries, LLC, 2012
1
February, 2012 − Rev. 2
Publication Order Number:
NCP5395G/D