NCP5306 Datasheet, PDF (1/24 Pages) ON Semiconductor – Three−Phase VRM 9.0 Buck Controller

NCP5306
Three−Phase VRM 9.0
Buck Controller
Multiphase controllers provide fast, accurate regulation with the
control features required to power the next generation of processors in
desktop, workstation and server applications. Combined with external
gate drivers and power components, the NCP5306 implements a
compact, highly integrated buck converter. Enhanced V²â„¢ control
inherently compensates for variations in both line and load. Current
sharing between phases is achieved by Peak Current Sharing.
The NCP5306 includes Power Good with a programmable lower
threshold.
Applications include Embedded Processor Power and low
voltage/high current power supplies.
Features
• Switching Regulator Controller
− Lossless Current Sensing
− Enhanced V² Control Method Provides Excellent Regulation
and Fast Transient Response
− Programmable Up to 800 kHz Switching Frequency (Per Phase)
− Duty Cycle − 0% to 100%
− Programmable Adaptive Voltage Positioning Reduces Output
Capacitor Requirements
− Programmable Soft Start
• Accurate Current Sharing
• Protection Features
− Pulse−by−Pulse Current Limit for Each Phase
− Programmable Hiccup Overcurrent Protection
− All “1” DAC Code Fault
− Processor Overvoltage Protection through Bottom MOSFETs
− Undervoltage Lockout
• System Power Management
− 5−Bit DAC With 1.0% Tolerance Compatible with VRM 9.0
− Power Good Output
− Programmable Power Good Lower Threshold
• Guaranteed Startup at −20°C
http://onsemi.com
24
1
SO−24L
DW SUFFIX
CASE 751E
MARKING DIAGRAM
24
NCP5306
AWLYYWW
1
A
= Assembly Location
WL = Wafer Lot
YY
= Year
WW = Work Week
PIN CONNECTIONS
1
GND
OCSET
R_OSC
CS3
CS2
CS1
NC
CS_REF
V_DRP
V_FB
COMP
SS
24
V_CC
GATE3
GATE2
GATE1
NC
V_ID0
V_ID1
V_ID2
V_ID3
V_ID4
PWRGDS
PWRGD
ORDERING INFORMATION
Device
Package
Shipping
NCP5306DW
SO−24L
30 Units/Rail
NCP5306DWR2 SO−24L 1000 Tape & Reel
© Semiconductor Components Industries, LLC, 2006
1
July, 2006 − Rev. 3
Publication Order Number:
NCP5306/D