UCC28220
- 2-MHz High-Frequency Oscillator With 1-MHz Operation Per Channel
- Matched Internal Slope Compensation Circuits
- Programmable Maximum Duty Cycle Clamp 60% to 90% Per Channel
- Peak Current Mode Control With Cycle-by-Cycle Current Limit
- Current Sense Discharge Transistor for Improved Noise Immunity
- Accurate Line Undervoltage and Overvoltage Sense With Programmable Hysteresis
- Opto-Coupler Interface
- 110-V Internal Start-Up JFET (UCC28221)
- Operates From 12-V Supply (UCC28220)
- Programmable Soft Start
The UCC28220 and UCC28221 are a family of BiCMOS interleaved dual channel PWM controllers. Peak current mode control is used to ensure current sharing between the two channels. A precise maximum duty cycle clamp can be set to any value between 60% and 90% duty cycle per channel.
The UCC28220 has an UVLO turnon threshold of
10 V for use in 12-V supplies while UCC28221 has a turnon threshold of 13 V for systems needing wider UVLO hysteresis. Both have 8-V turnoff thresholds.
Additional features include a programmable internal slope compensation with a special circuit which is used to ensure exactly the same slope is added to each channel and a high-voltage 110-V internal JFET for easier start-up for the wider hysteresis UCC28221 version.
The UCC28220 is available in both 16-pin SOIC and low-profile TSSOP packages. The UCC28221 also comes in 16-pin SOIC package and a slightly larger 20-pin TSSOP package to allow for high-voltage pin spacing to meet UL1950 creepage clearance safety requirements.
기술 문서
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | UCC2822x Interleaved Dual PWM Controller With Programmable Max Duty Cycle datasheet (Rev. G) | PDF | HTML | 2017/04/06 |
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018/06/25 | ||
| Application note | 350-W, Two Phase Interleaved PFC Pre-Regulator (Rev. C) | 2013/09/20 | ||
| User guide | 350-W Interleaved PFC Pre-Regulator | 2005/08/29 | ||
| More literature | Seminar 300 Topic 8 - Switching Power Supply Design Review | 2001/02/15 | ||
| More literature | Seminar 400 Topic 2 - Design of Flyback Transformers and Filter Inductors | 2001/02/15 |
설계 및 개발
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UCC28221-CALC — UCC28221 MathCAD 계산 유틸리티
| 패키지 | 핀 | 다운로드 |
|---|---|---|
| SOIC (D) | 16 | 옵션 보기 |
| TSSOP (PW) | 16 | 옵션 보기 |
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