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 V
2
餂?/div>
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
鈥?/div>
Switching Regulator Controller
鈥?/div>
Lossless Current Sensing
鈥?/div>
Enhanced V
2
Control Method Provides Excellent Regulation
and Fast Transient Response
鈥?/div>
Programmable Up to 800 kHz Switching Frequency (Per Phase)
鈥?/div>
Duty Cycle 鈥?0% to 100%
鈥?/div>
Programmable Adaptive Voltage Positioning Reduces Output
Capacitor Requirements
鈥?/div>
Programmable Soft Start
鈥?/div>
Accurate Current Sharing
鈥?/div>
Protection Features
鈥?/div>
Pulse鈥揵y鈥揚(yáng)ulse Current Limit for Each Phase
鈥?/div>
Programmable Hiccup Overcurrent Protection
鈥?/div>
All 鈥?鈥?DAC Code Fault
鈥?/div>
Processor Overvoltage Protection through Bottom MOSFETs
鈥?/div>
Undervoltage Lockout
鈥?/div>
System Power Management
鈥?/div>
5鈥揃it DAC With 1.0% Tolerance Compatible with VRM 9.0
鈥?/div>
Power Good Output
鈥?/div>
Programmable Power Good Lower Threshold
鈥?/div>
Guaranteed Startup at 鈥?0擄C
http://onsemi.com
24
1
SO鈥?4L
DW SUFFIX
CASE 751E
MARKING DIAGRAM
24
NCP5306
AWLYYWW
1
A
WL
YY
WW
= Assembly Location
= Wafer Lot
= Year
= Work Week
PIN CONNECTIONS
GND
OCSET
R
OSC
CS3
CS2
CS1
NC
CS
REF
V
DRP
V
FB
COMP
SS
1
24
V
CC
GATE3
GATE2
GATE1
NC
V
ID0
V
ID1
V
ID2
V
ID3
V
ID4
PWRGDS
PWRGD
ORDERING INFORMATION
Device
NCP5306DW
NCP5306DWR2
Package
SO鈥?4L
SO鈥?4L
Shipping
30 Units/Rail
1000 Tape & Reel
錚?/div>
Semiconductor Components Industries, LLC, 2002
1
August, 2002 鈥?Rev. 2
Publication Order Number:
NCP5306/D
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