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參數資料
| 型號： | CS51221 |
| 廠商： | ZF Electronics Corporation |
| 英文描述： | Enhanced Voltage Mode PWM Controller |
| 中文描述： | 增強的電壓模式PWM控制器 |
| 文件頁數： | 1/12頁 |
| 文件大?。?/td> | 164K |
| 代理商： | CS51221 |
Features
I
1MHz Frequency Capability
Fixed Frequency V oltage
Mode Operation, with Feed
Forward
Thermal Shutdown
Under V oltage Lock-out
Accurate Programmable Max
Duty Cycle Limit
1A Sink/Source Gate Drive
Programmable Pulse by
Pulse Over Current
Protection
Leading Edge Current Sense
Blanking
75ns Shutdown Propagation
Delay
Programmable Soft Start
Under V oltage Protection
Over V oltage Protection with
Programmable Hysteresis
Bidirectional
Synchronization
25ns GATE Rise and Fall
Time (1nF load)
3.3V 3% Reference V oltage
Output
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I
I
I
I
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Package Options
16 Lead SO Narrow & PDIP
C
Enhanced Voltage Mode PWM Controller
CS51221
Description
Application Diagram
1
GATE
I
SENSE
SYNC
FF
UV
OV
R
T
C
T
I
SET
VC
PGnd
V
CC
V
REF
LGnd
SS
COMP
V
FB
1
36V-72V to 5V/5A converter
Rev. 3/26/99
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
The CS51221 fixed frequency
feed forward voltage mode
PWM controller contains all of
the features necessary for basic
voltage mode operation. This
PWM controller has been opti-
mized for high frequency prima-
ry side control operation. In
addition, this device includes
such features as: Soft Start, accu-
rate duty cycle limit control, less
than 50μA startup current, over
and under voltage protection,
and bidirectional synchroniza-
tion. The CS51221 is available in
16 lead PDIP and SO narrow
surface mount packages.
V
IN
(36V to 72V)
51k
0.01
μ
F
470pF
20.25k
10
13k
510k
0.1
μ
F
62
IRF634
100
1
μ
F
10
680pF
150
1k
180
MOC81025
2k
100
μ
F
SGnd
V
(5V/5A)
2200pF
5.1k
0.1
μ
F
SYNC
4.3k
200
10k
1
μ
F
2k
1k
330pF
MBRB2545CT
100pF
10
D11
10k
BAS21
18V
22
μ
F
11V
FZT688
10
0.22
μ
F
24.3k
TL431
T1
4:1
1T3
T2
2:5
UV
U1
OV
V
REF
COMP
R
T
/C
T
I
SET
LGnd
SS
V
FB
SYNC
PGnd
FF
V
C
V
CC
I
SENSE
C
GATE
160k
5.6k
V33MD13
4700pF
相關PDF資料 |
PDF描述 |
|---|---|
| CS51221EDR16 | Enhanced Voltage Mode PWM Controller |
| CS5124 | High Performance, Integrated Current Mode PWM Controllers |
| CS5126XD8 | High Performance, Integrated Current Mode PWM Controllers |
| CS5126 | High Performance, Integrated Current Mode PWM Controllers |
| CS5124XDR8 | High Performance, Integrated Current Mode PWM Controllers |
相關代理商/技術參數 |
參數描述 |
|---|---|
| CS51221/D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Enhanced Voltage Mode PWM Controller |
| CS51221_09 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Enhanced Voltage Mode PWM Controller |
| CS51221ED16 | 功能描述:電壓模式 PWM 控制器 Enhanced Current RoHS:否 制造商:Texas Instruments 輸出端數量:1 拓撲結構:Buck 輸出電壓:34 V 輸出電流: 開關頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| CS51221ED16G | 功能描述:電壓模式 PWM 控制器 Enhanced Current Mode PWM Controller RoHS:否 制造商:Texas Instruments 輸出端數量:1 拓撲結構:Buck 輸出電壓:34 V 輸出電流: 開關頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| CS51221EDR16 | 功能描述:電壓模式 PWM 控制器 Enhanced Current RoHS:否 制造商:Texas Instruments 輸出端數量:1 拓撲結構:Buck 輸出電壓:34 V 輸出電流: 開關頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
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