CS5303 Datasheet, PDF (1/19 Pages) ON Semiconductor – Three−Phase Buck Controller with Integrated Gate Drivers

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 V²â„¢
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 V² 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
28
1
SO−28L
DW SUFFIX
CASE 751F
MARKING DIAGRAM
28
CS5303
AWLYYWW
1
A
= Assembly Location
WL, L = Wafer Lot
YY, Y = Year
WW, W = Work Week
PIN CONNECTIONS
1
COMP
V_FB
V_DRP
CS1
CS2
CS3
CS_REF
V_ID0
V_ID1
V_ID2
V_ID3
V_ID4
I_LIM
REF
28
R_OSC
V_CCLL1
Gate(L)1
Gnd1
Gate(H)1
V_CCH12
Gate(H)2
GndL2
Gate(L)2
V_CCL23
Gate(L)3
Gnd3
Gate(H)3
V_CCH3
ORDERING INFORMATION
Device
Package
Shipping
CS5303GDW28
SO−28L 27 Units/Rail
CS5303GDWR28 SO−28L 1000 Tape & Reel
© Semiconductor Components Industries, LLC, 2006
1
July, 2006 − Rev. 14
Publication Order Number:
CS5303/D