CS5150H Datasheet, PDF (1/14 Pages) Cherry Semiconductor Corporation – CPU 4-Bit Synchronous Buck Controller

CS5150H
CPU 4-Bit Synchronous Buck Controller
Description
Features
The CS5150H is a 4-bit synchronous
dual N-Channel buck controller. It
is designed to provide unprece-
dented transient response for
today’s demanding high-density,
high-speed logic. The regulator
operates using a proprietary control
method, which allows a 100ns
response time to load transients.
The CS5150H is designed to operate
over a 4.25-20V range (V_CC) using
12V to power the IC and 5V or 12V
as the main supply for conversion.
The CS5150H is specifically
designed to power Pentium^® Pro
processors and other high perfor-
mance core logic. It includes the fol-
lowing features: on board, 4-bit
DAC, short circuit protection, 1.0%
output tolerance, V_CC monitor, and
programmable soft start capability.
The CS5150H is upward compatible
with the 5-bit CS5155H, allowing
the mother board designer the
capability of using either the
CS5150H or the CS5155H with no
change in layout. The CS5150H is
available in 16 pin surface mount.
Application Diagram
Switching Power Supply for core logic - Pentium^® Pro processor
12V
5V
0.1µF
V_ID0
V_ID1
V_ID2
V_ID3
330pF
V_CC1
V_CC2
V_GATE(H)
V_ID0
V_ID1
V_ID2
V_ID3 ^CS5150H
V_GATE(L)
C_OFF
PGnd
0.1µF
SS
COMP
0.33µF
LGnd
V_FB
V_FFB
3.3k
100pF
1200µF/16V x 3
AlEl
IRL3103
2µH
2.1V to 3.5V @ 13A
IRL3103
1200µF/16V x 5
AlEl
V² is a trademark of Switch Power, Inc.
Pentium is a registered trademark of Intel Corporation.
s Dual N-Channel Design
s Excess of 1MHz Operation
s 100ns Transient Response
s 4-Bit DAC
s Upward Compatible with
5-Bit CS5155H/5156H
and Adjustable
CS5120/5121
s 30ns Gate Rise/Fall Times
s 1% DAC Accuracy
s 5V & 12V Operation
s Remote Sense
s Programmable Soft Start
s Lossless Short Circuit
Protection
s V_CC Monitor
s 25ns FET Nonoverlap Time
s Adaptive Voltage
Positioning
s V^2™ Control Topology
s Current Sharing
s Overvoltage Protection
Package Options
16 Lead SO Narrow
V_ID0 1
V_ID1
V_ID2
V_ID3
SS
NC
C_OFF
V_FFB
V_FB
COMP
LGnd
V_CC1
V_GATE(L)
PGnd
V_GATE(H)
V_CC2
Rev. 1/21/99
Cherry Semiconductor Corporation
2000 South County Trail, East Greenwich, RI 02818
Tel: [phone] Fax: [phone]
Email: [e-mail]
Web Site: www.cherry-semi.com
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