
Semiconductor Components Industries, LLC, 2001
April, 2001 – Rev. 13
1
Publication Order Number:
CS5303/D
CS5303
Three-Phase Buck
Controller with Integrated
Gate Drivers
The CS5303 is a three–phase step down controller which
incorporates all control functions required to power high performance
processors and high current power supplies. Proprietary multi–phase
architecture guarantees balanced load current distribution and reduces
overall solution cost in high current applications. Enhanced V
2
control architecture provides the fastest possible transient response,
excellent overall regulation, and ease of use.
The CS5303 multi–phase 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 V
2
Control Method
5–Bit DAC with 1.0% Accuracy
Adjustable Output Voltage Positioning
6 On–Board Gate Drivers
200
kHz to 800
kHz Operation Set by Resistor
Current Sensed through Buck Inductors, Sense Resistors,
or V–S Control
Hiccup Mode Current Limit
Individual Current Limits for Each Phase
On–Board Current Sense Amplifiers
3.3
V, 1.0
mA Reference Output
5.0
V and/or 12
V Operation
On/Off Control (through COMP Pin)
http://onsemi.com
Device
Package
Shipping
ORDERING INFORMATION
CS5303GDW28
SO–28L
27 Units/Rail
CS5303GDWR28
SO–28L
1000 Tape & Reel
PIN CONNECTIONS
1
COMP
SO–28L
DW SUFFIX
CASE 751F
A
WL, L
YY, Y
WW, W = Work Week
= Assembly Location
= Wafer Lot
= Year
MARKING DIAGRAM
1
CS5303
AWLYYWW
28
1
28
28
GndL2
Gate(L)2
V
CCL23
Gate(L)3
V
ID0
V
ID1
V
ID2
V
ID3
Gate(H)2
CS
REF
V
CCH12
CS3
Gate(H)1
CS2
Gnd1
CS1
Gate(L)1
V
DRP
V
CCLL1
V
FB
R
OSC
Gnd3
Gate(H)3
V
CCH3
V
ID4
I
LIM
REF