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CS5322 Datasheet

Two-Phase Buck Controller

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CS5322
Two−Phase Buck Controller
with Integrated Gate
Drivers and 5−Bit 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
28
1
SO28L
DW SUFFIX
CASE 751F
PIN CONNECTIONS AND
MARKING DIAGRAM
1
COMP
VFB
VDRP
CS1
CS2
CSREF
PWRGD
VID0
VID1
VID2
VID3
VID4
ILIM
REF
28ROSC
VCCL
VCCL1
GATE(L)1
GND
GATE(H)1
VCCH1
LGND
SS
VCCL2
GATE(L)2
GND2
GATE(H)2
VCCH2
A = Assembly Location
WL, L = Wafer Lot
YY, Y = Year
WW, W = Work Week
ORDERING INFORMATION
Device
Package
Shipping
CS5322GDW28
SO28L 27 Units/Rail
CS5322GDWR28 SO28L 1000 Tape & Reel
© Semiconductor Components Industries, LLC, 2006
July, 2006 Rev. 7
1
Publication Order Number:
CS5322/D


  ON Semiconductor Electronic Components Datasheet  

CS5322 Datasheet

Two-Phase Buck Controller

No Preview Available !

+12 V
+5.0 V
ENABLE
PWRGD
VID0
VID1
VID2
VID3
VID4
.01 μF
CS5322
300 nH
1.0 μF
1.0 μF
1.0 μF
1.0 nF
4.12 k
34.8 k
12.7 k
1.0 nF
61.9 k
COMP
VCVDFSBR1P
CS2
PCWSRREGF D
VVVIIIDDD210
VVRILIIEIDDMF34
VRVCOCCSCLCL1
GATE(L)1
GND1
GATE(H)1
VLCGCNHD1
GATVEC(CLSL)S22
GND2
GATE(H)2
VCCH2
0.1 μF
2.80 k
1.0 k
.01 μF
25.5 k
25.5 k
.01 μF
0.1 μF
1.0 μF
Figure 1. Application Diagram, 12 V to 1.6 V, 35 A Converter
+ 3×
16SP270M
600 nH
+
8×
4SP820M
12 ×10 μF
VOUT
600 nH
http://onsemi.com
2


Part Number CS5322
Description Two-Phase Buck Controller
Maker ON Semiconductor
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CS5322 Datasheet PDF






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