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 V
2
™
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
♦
http://onsemi.com
MARKING
DIAGRAMS
48
1
NCP5316
AWLYYWW
48−PIN QFN, 7
y
7
MN SUFFIX
CASE 485K
(Bottom View)
•
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
NCP5316
AWLYYWW
48
1
LQFP−48
FT SUFFIX
CASE 932
A
WL
YY
WW
= Assembly Location
= Wafer Lot
= Year
= Work Week
ORDERING INFORMATION
Device
NCP5316MNR2
NCP5316FTR2
Package
48−Pin QFN*
LQFP−48*
Shipping
†
2000 Tape & Reel
2000 Tape & Reel
*7
×
7 mm
†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.
©
Semiconductor Components Industries, LLC, 2004
1
February, 2004 − Rev. 9
Publication Order Number
NCP5316/D
ONSEMI [ ON SEMICONDUCTOR ]
