UCC25701
- 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
- 130µA Start-up Current
- 750µA Operating Current
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 starting, 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 occurred.
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.
기술 자료
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | Advanced Voltage Mode Pulse Width Modulator datasheet (Rev. C) | 2005/06/17 | |
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018/06/25 | ||
| Application note | DN-62 Switching Power Supply Topology Voltage Mode vs. Current Mode | 1999/09/05 | ||
| Application note | U-150 Applying the UCC3570 Voltage-Mode PWM Controller to Both Off-Line | 1999/09/05 |
설계 및 개발
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| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| PDIP (N) | 14 | Ultra Librarian |
| SOIC (D) | 14 | Ultra Librarian |
| TSSOP (PW) | 14 | Ultra Librarian |
주문 및 품질
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
- 팹 위치
- 조립 위치