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CS5165 데이터시트(PDF) 1 Page - Cherry Semiconductor Corporation

부품명 CS5165
상세설명  Fast, Precise 5-Bit Synchronous Buck Controller for the Next Generation Low Voltage Pentium II Processors
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제조업체  CHERRY [Cherry Semiconductor Corporation]
홈페이지  http://www.cherrycorp.com/
Logo CHERRY - Cherry Semiconductor Corporation

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COFF
VID4
VID3
VID2
VCC
VFB
PWRGD
COMP
IRL3103
IRL3103
1µF
12V
5V
1.2µH
GATE(H)
GATE(L)
PGnd
1200µF/10V x 3
330pF
VID1
SS
ENABLE
LGnd
PCB
trace 6mΩ
0.1µF
0.1 µF
VID0
1200µF
10V x 5
PWRGD
ENABLE
VID4
VID3
VID2
VID1
VID0
Pentium® II
System
1000pF
3.3K
CS5165
VSS
VCC
Features
s
V2™ Control Topology
s
Dual N Channel Design
s
100ns Controller Transient
Response
s
Excess of 1Mhz Operation
s
5 Bit DAC with 1% Tolerance
s
Power Good Output With
Internal Delay
s
Enable Input Provides
Micropower Shutdown Mode
s
Complete Pentium® II System
Requires 18 Components
s
5V and 12V Operation
s
Adaptive Voltage Positioning
s
Remote Sense Capability
s
Current Sharing Capability
s
VCC Monitor
s
Hiccup Mode Short Circuit
Protection
s
Overvoltage Protection (OVP)
s
Programmable Soft Start
s
150ns PWM Blanking
s
65ns FET Non-Overlap
s
40ns Gate Rise and Fall Times
(3.3nF load)
Package Options
Fast, Precise 5-Bit Synchronous Buck Controller
for the Next Generation Low Voltage Pentium® II Processors
CS5165
Description
The CS5165 synchronous 5-bit NFET
buck controller is optimized to manage
the power of the next generation
Pentium®II processors. It’s V2™ control
architecture delivers the fastest transient
response (100ns), and best overall voltage
regulation in the industry today. It’s fea-
ture rich design gives end users the maxi-
mum flexibility to implement the best
price/performance solutions for their end
products.
The CS5165 has been carefully crafted to
maximize performance and protect the
processor during operation. It has a 5-bit
DAC on board that holds a ±1% tolerance
over temperature. Its on board pro-
grammable soft start insures a control
start up, and the FET nonoverlap circuit-
ry ensures that both FETs do not conduct
simultaneously.
The on board oscillator can be pro-
grammed up to 1MHz to give the design-
er maximum flexibility in choosing exter-
nal components and setting systems costs.
The CS5165 protects the processor during
potentially catastrophic events like over-
voltage (OVP) and short circuit. The OVP
feature is part of the V2™ architecture and
does not require any additional compo-
nents. During short circuit, the controller
pulses the MOSFETs in a “hiccup” mode
(3% duty cycle) until the fault is removed.
With this method, the MOSFETs do not
overheat or self destruct.
The CS5165 is designed for use in both
single processor desktop and multipro-
cessor workstation and server applica-
tions. The CS5165’s current sharing capa-
bility allows the designer to build multi-
ple parallel and redundant power solu-
tions for multiprocessor systems.
The CS5165 contains other control and
protection features such as Power Good,
ENABLE, and adaptive voltage position-
ing. It is available in a 16 lead SOIC wide
body package.
Application Diagram
1
16 Lead SO WIDE
1
VID0
VID1
VID2
VID3
ENABLE
COFF
SS
VID4
VFB
COMP
LGnd
PWRGD
GATE(L)
PGnd
GATE(H)
VCC
V2 is a trademark of Switch Power, Inc.
Pentium is a registered trademark of Intel Corporation.
5V to 2.8V @ 14.2A for 300MHz Pentium®II
Rev. 6/28/99
Cherry Semiconductor Corporation
2000 South County Trail, East Greenwich, RI 02818
Tel: (401)885-3600 Fax: (401)885-5786
Email: info@cherry-semi.com
Web Site: www.cherry-semi.com
A
Company
®


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