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參數資料
| 型號： | EL7571C |
| 英文描述： | Programmable PWM Controller |
| 中文描述： | 可編程PWM控制器 |
| 文件頁數： | 1/23頁 |
| 文件大小： | 480K |
| 代理商： | EL7571C |
Note: All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication; however, this data sheet cannot be a “controlled document”. Current revisions, if any, to these
specifications are maintained at the factory and are available upon your request. We recommend checking the revision level before finalization of your design documentation.
2001 Elantec Semiconductor, Inc.
E
L
75
71
C
General Description
The EL7571C is a flexible, high efficiency, current mode, PWM step
down controller. It incorporates five bit DAC adjustable output voltage
control which conforms to the Intel Voltage Regulation Module (VRM)
Specification for Pentium II and Pentium Pro class processors. The
controller employs synchronous rectification to deliver efficiencies
greater than 90% over a wide range of supply voltages and load condi-
tions. The on-board oscillator frequency is externally adjustable, or may
be slaved to a system clock, allowing optimization of RFI performance in
critical applications. In single supply operation, the high side FET driver
supports boot-strapped operation. For maximum flexibility, system oper-
ation is possible from either a 5V rail, a single 12V rail, or dual supply
rails with the controller operating from 12V and the power FETs from
5V.
1
2
3
4
16
15
14
13
5
6
7
12
11
9
8
10
20
19
18
17
OTEN
VID4
VID3
VID2
VID1
VIDO
PWRGD
REF
COSC
CSLOPE
VH1
FB
CS
GND
GNDP
LSD
VINP
VIN
LX
HSD
ENABLE
POWER
GOOD
Voltage
I.D.
(VID
(0:4))
C3 240pF
C3
0.1F
1.4V
C6 0.1F
R2
5
D1
Q1
C8
1F
C1
1000F
x3
L2
1.5H
4.5V
to
12.6V
L1
5.1H
R2
5
C2
1000F
x6
C7
1F
Q2
D2
VOUT
1.3V to
3.5V
Q1, Q2: Siliconix, Si4410, x2
C1: Sanyo, 16MV 1000GX, 1000F x3
C2: Sanyo, 6MV 1000GX, 1000F x6
L1: Pulse Engineering, PE-53700, 5.1H
L2: Micrometals, T30-26, 7T AWG #20, 1.5H
R1: Dale, WSL-25-12, 15m
, x2
D1: BAV99
D2: IR, 32CTQ030
Features
Pentium II Compatible
5 bit DAC Controlled Output Voltage
Greater than 90% Efficiency
4.5V to 12.6V Input Range
Dual NMOS Power FET Drivers
Fixed frequency, Current Mode
Control
Adjustable Oscillator with External
Sync. Capability
Synchronous Switching
Internal Soft-Start
User Adjustable Slope
Compensation
Pulse by Pulse Current Limiting
1% Typical Output Accuracy
Power Good Signal
Output Power Down
Over Voltage Protection
Applications
Pentium II Voltage Regulation
Modules (VRMs)
PC Motherboards
DC/DC Converters
GTL Bus Termination
Secondary Regulation
Ordering Information
Part No
Temp. Range
Package
Outline #
EL7571C
0°C to +70°C
20-Pin SO
MDP0027
EL7571C
Programmable PWM Controller
A
pr
il
24
,2
00
1
Connection Diagram
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相關代理商/技術參數 |
參數描述 |
|---|---|
| EL7571CM | 功能描述:IC CTRLR PWM PROGRAMMABLE 20SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - 專用型 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,000 系列:- 應用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數:10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應商設備封裝:42-WLP 包裝:帶卷 (TR) |
| EL7571CM-T13 | 功能描述:IC CTRLR PWM PROGRAMMABLE 20SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - 專用型 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,000 系列:- 應用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數:10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應商設備封裝:42-WLP 包裝:帶卷 (TR) |
| EL7571CMZ | 功能描述:IC CTRLR PWM PROGRAMMABLE 20SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - 專用型 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,000 系列:- 應用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數:10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應商設備封裝:42-WLP 包裝:帶卷 (TR) |
| EL7571CMZ-T13 | 功能描述:IC CTRLR PWM PROGRAMMABLE 20SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - 專用型 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,000 系列:- 應用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數:10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應商設備封裝:42-WLP 包裝:帶卷 (TR) |
| EL7581 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:3-Channel DC-DC Converter |
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