CS5323_06 Datasheet, PDF (1/16 Pages) ON Semiconductor – Three−Phase Buck Controller with 5−Bit DAC

CS5323
Three−Phase Buck
Controller with 5−Bit DAC
The CS5323 is a three−phase step down controller that incorporates
all control functions required to power next generation processors.
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 multi−phase architecture reduces input and output filter ripple,
allowing for a reduction in filter size and inductor values with a
corresponding increase in the output inductor current slew rate.
Features
• Enhanced V² Control Method
• 5−Bit DAC with 1.0% Tolerance
• Adjustable Output Voltage Positioning
• Programmable Frequency Set by Single Resistor
• 200 kHz to 800 kHz Operation (Per Phase)
• Current Sensed through Sense Resistors, or Buck Inductors
• Adjustable Current Sense Threshold
• Hiccup Mode Current Limit
• Over−Voltage Protection through Synchronous MOSFET’s
• 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
20
1
SO−20L
DW SUFFIX
CASE 751D
PIN CONNECTIONS AND
MARKING DIAGRAM
R_OSC ¹
COMP
V_FB
V_DRP
CS1
CS2
CS3
CS_REF
I_LIM
REF
V_CC
GATE1
GATE2
GATE3
GND
V_ID4
V_ID3
V_ID2
V_ID1
V_ID0
A
WL, L
YY, Y
WW, W
= Assembly Location
= Wafer Lot
= Year
= Work Week
ORDERING INFORMATION
Device
Package
Shipping
CS5323GDW20
SO−20L 37 Units/Rail
CS5323GDWR20 SO−20L 1000 Tape & Reel
© Semiconductor Components Industries, LLC, 2006
1
July, 2006 − Rev. 7
Publication Order Number:
CS5323/D