NCP5395T_13 Datasheet, PDF (1/25 Pages) ON Semiconductor – 2/3/4-Phase Controller

NCP5395T
2/3/4-Phase Controller with
On Board Gate Drivers for
CPU Applications
The NCP5395T provides up to a four−phase buck solution which
combines differential voltage sensing, differential phase current
sensing, and adaptive voltage positioning to provide accurately
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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.
QFN48, 7x7
CASE 485AJ
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
1 48
MARKING DIAGRAM
48
1
transient regulation specifications.
The on board gate drivers includes adaptive non overlap and power
NCP5395T
AWLYYWWG
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.
A
= Assembly Location
WL
= Wafer Lot
YY
= Year
WW
= Work Week
G
= Pb−Free Package
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
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
• True Differential Remote Voltage Sensing Amplifier
• Phase−to−Phase Current Balancing
• “Lossless” Differential Inductor Current Sensing
• Accurate Current Monitoring (IMON)
ORDERING INFORMATION
• Differential Current Sense Amplifiers for Each Phase
Device
Package
Shipping^†
• Adaptive Voltage Positioning (AVP)
• Oscillator Frequency Range of 125 kHz − 1 MHz
NCP5395TMNR2G QFN48 2500/Tape & Reel
(Pb−Free)
• Latched Over Voltage Protection (OVP)
• Guaranteed Startup into Pre−Charged Loads
• Threshold Sensitive Enable Pin for VTT Sensing
†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.
• Power Good Output with Internal Delays
• Thermal Shutdown Protection
• Output Disable Control Turn Off of Both Phase Pair
• This is a Pb−Free Device
MOSFETs
• Thermally Compensated Current Monitoring
• Adaptive−Non−Overlap Gate Drive Circuit
Applications
• Desktop Processors
© Semiconductor Components Industries, LLC, 2013
1
July, 2013 − Rev. 1
Publication Order Number:
NCP5395T/D