
Semiconductor Components Industries, LLC, 2006
July, 2006 Rev. 7
1
Publication Order Number:
CS5322/D
CS5322
TwoPhase Buck Controller
with Integrated Gate
Drivers and 5Bit DAC
The CS5322 is a twophase step down controller which
incorporates all control functions required to power high performance
processors and high current power supplies. Proprietary multiphase
architecture guarantees balanced load current distribution and reduces
overall solution cost in high current applications. Enhanced V2
control architecture provides the fastest possible transient response,
excellent overall regulation, and ease of use.
The CS5322 multiphase architecture reduces output voltage and
input current ripple, allowing for a significant reduction in inductor
values and a corresponding increase in inductor current slew rate. This
approach allows a considerable reduction in input and output capacitor
requirements, as well as reducing overall solution size and cost.
Features
Enhanced V2 Control Method
5Bit DAC with 1.0% Accuracy
Adjustable Output Voltage Positioning
4 OnBoard Gate Drivers
200 kHz to 800 kHz Operation Set by Resistor
Current Sensed through Buck Inductors, Sense Resistors, or VS
Control
Hiccup Mode Current Limit
Individual Current Limits for Each Phase
OnBoard Current Sense Amplifiers
3.3 V, 1.0 mA Reference Output
5.0 V and/or 12 V Operation
On/Off Control (through Soft Start Pin)
Power Good Output with Internal Delay
http://onsemi.com
Device
Package
Shipping
ORDERING INFORMATION
CS5322GDW28
SO28L
27 Units/Rail
CS5322GDWR28
SO28L
1000 Tape & Reel
SO28L
DW SUFFIX
CASE 751F
A
= Assembly Location
WL, L
= Wafer Lot
YY, Y
= Year
WW, W = Work Week
1
CS5322
A
W
LYYWW
28
LGND
VID0
VCCH1
PWRGD
GATE(H)1
CSREF
GND
CS2
GATE(L)1
CS1
VCCL1
VDRP
VCCL
VFB
ROSC
COMP
SS
VID1
VCCL2
VID2
GND2
VID4
GATE(L)2
VID3
GATE(H)2
ILIM
VCCH2
REF
PIN CONNECTIONS AND
MARKING DIAGRAM
1
28