Four/Five/Six-Phase Buck CPU Controller - ON Semiconductor
Description
NCP5316
Four/Five/Six−Phase
Buck CPU Controller
The NCP5316 provides full−featured and flexible control for the latest high−performance CPUs.
The IC can be programmed as a four−, five− or six−phase buck controller, and the per−phase switching frequency can be as high as 1.
0 MHz.
Combined with external gate drivers and power components, the controller implements a compact, highly integrated multi−phase buck converter.
Enhanced V2™ control inherently compensates for variations in both line and load, and achieves current sharing between phases.
This control scheme provides fast transient response, reducing the need for large banks of output capacitors and higher switching frequency.
The controller meets VR(M)10.
x specifications with all the required functions and protection features.
Features
• Switching Regulator Controller
♦ Programmable 4/5/6 Phase Operation ♦ Lossless Current Sensing ♦ Programmable Up to 1.
0 MHz Switching Frequency Per Phase ♦ 0 to 100% Adjustment of Duty Cycle ♦ Programmable Adaptive Voltage Positioning Reduces Output
Capacitor Requirements ♦ Programmable Soft Start
• Current Sharing
♦ Differential Current Sense Pins for Each Phase ♦ Current Sharing Within 10% Between Phases
• Protection Features
♦ Programmable Pulse−by−Pulse Current Limit for Each Phase ♦ “111110” and “111111” DAC Code Fault ♦ Latching Off Overvoltage Protection ♦ Programmable Latch Overcurrent Protection ♦ Undervoltage Lockout ♦ Reference Undervoltage Lockout ♦ MOSFET Driver Control through Driver−On Signal
• System Power Management
♦ 6−Bit DAC with 0.
5% Tolerance ♦ Programmable Lower Power Good Threshold ♦ Power Good Output ♦ External Enable Control ♦ 3.
3 V Reference Voltage Output
http://onsemi.
com
48−PIN QFN, 7 y 7 MN SUFFIX CASE 485K
(Bottom View)
MARKING DIAGRAMS
48 1
NCP5316 AWLYYWW
NCP5316 AWLYYWW
48
LQFP−48 FT SUFFIX CASE 932
1
A = Assembly Location WL = Wafer Lot YY = Year WW = Work Week
ORDERING INFORMATION
Device
Package
Shipping†
NCP5316MNR2 48−Pin QFN* 2...
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