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參數(shù)資料
| 型號： | UCC15702 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Advanced Voltage Mode Pulse Width Modulator |
| 中文描述： | 高級電壓模式脈寬調(diào)制器 |
| 文件頁數(shù)： | 1/10頁 |
| 文件大小： | 163K |
| 代理商： | UCC15702 |
UCC15701/2
UCC25701/2
UCC35701/2
Advanced Voltage Mode Pulse Width Modulator
DESCRIPTION
The UCC35701/UCC35702 family of pulse width modulators is intended for
isolated switching power supplies using primary side control. They can be
used for both off-line applications and DC/DC converter designs such as in
a distributed power system architecture or as a telecom power source.
The devices feature low startup current, allowing for efficient off-line start-
ing, yet have sufficient output drive to switch power MOSFETs in excess of
500kHz.
Voltage feed forward compensation is operational over a 5:1 input range
and provides fast and accurate response to input voltage changes over a
4:1 range. An accurate volt-second clamp and maximum duty cycle limit
are also featured.
Fault protection is provided by pulse by pulse current limiting as well as the
ability to latch off after a programmable number of repetitive faults has oc-
curred.
Two UVLO options are offered. UCC35701 family has turn-on and turn-off
thresholds of 13V/9V and UCC35702 family has thresholds of 9.6V/8.8V.
The UCC35701/2 and the UCC25701/2 are offered in the 14 pin SOIC (D),
14 pin PDIP (N) or in 14 pin TSSOP (PW) packages. The UCC15701/2 is
offered in the 14 pin CDIP (J) package.
3
VDD
12
VREF
8
FB
4
OUT
2
ILIM
5
PGND
C3
1
COUNT
C
F
14
SS
C
S
11
SYNC
9
VSCLAMP
VREF
10
CT
C
T
7
RT
6
VFF
13
GND
V
IN
SUPPLY
V
IN
RETURN
RGND
R10
RCS
R8
R7
R6
C2
R8
R
F
R5
R4
R3
R2
R1
V
OUT
UCC35701
C1
C4
C6
R12
C6
C5
R11
R13
C7
R14
V
OUT
R15
TYPICAL APPLICATION DIAGRAM
SLUS293A - JANUARY 2000
FEATURES
700kHz Operation
Integrated Oscillator/ Voltage Feed
Forward Compensation
Accurate Duty Cycle Limit
Accurate Volt-second Clamp
Optocoupler Interface
Fault Counting Shutdown
Fault Latch off or Automatic Shutdown
Soft Stop Optimized for Synchronous
Rectification
1A Peak Gate Drive Output
130
μ
A Start-up Current
750
μ
A Operating Current
UDG-98005-1
application
INFO
available
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UCC1570J | Low Power Pulse Width Modulator |
| UCC1570 | Low Power Pulse Width Modulator |
| UCC2750N | Low Power Pulse Width Modulator |
| UCC1580- | Single Ended Active Clamp/Reset PWM |
| UCC1580-1 | Single Ended Active Clamp/Reset PWM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UCC15702J | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Mode SMPS Controller |
| UCC1570J | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Low Power Pulse Width Modulator |
| UCC1570L | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Mode SMPS Controller |
| UCC1580- | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Single Ended Active Clamp/Reset PWM |
| UCC1580-1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Single Ended Active Clamp/Reset PWM |
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