LM5023
- Critical Conduction Mode
- Peak-Current Mode Control
- Skip-Cycle Mode for Low-Standby Power
- Hiccup Mode for Continuous Overload Protection
- Cycle-by-Cycle Overcurrent Protection Maintains
Accuracy Over the Universal AC Line - Line-Voltage Feedforward
- OVP Protection by Sensing the Auxiliary Winding
- Integrated 0.7-A Peak Gate Driver
- Direct Opto-Coupler Interface
- Leading Edge Blanking of Current Sense Signal
- Maximum Frequency Clamp 130 kHz
- Programmable Soft-Start
- Thermal Shutdown
- 8-Pin VSSOP Package
The LM5023 is a quasi-resonant pulse width modulated (PWM) controller which contains all of the features needed to implement a highly efficient off-line power supply. The LM5023 uses the transformer auxiliary winding for demagnetization detection to ensure critical conduction mode (CrCM) operation. The LM5023 features a hiccup mode for overcurrent protection with an auto restart to reduce the stress on the power components during an overload. A skip-cycle mode reduces power consumption at light loads for energy conservation applications (ENERGY STAR®, CEPCP, and so forth). The LM5023 also uses the transformer auxiliary winding for output overvoltage protection (OVP); if an OVP fault is detected the LM5023 latches off the controller.
기술 자료
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | LM5023 AC-DC Quasi-Resonant Current Mode PWM Controller datasheet (Rev. E) | PDF | HTML | 2016/01/06 |
| White paper | Power Electronics in Motor Drives: Where is it? (Rev. A) | 2019/10/01 | ||
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018/06/25 | ||
| EVM User's guide | Using the UCC24630EVM-636 65-W AC-to-DC Adapter (Rev. B) | 2016/12/12 | ||
| More literature | Design review of a 2-kW parallelable power supply module | 2016/08/17 | ||
| More literature | Design review of a 2-kW parallelable power supply module (PPT) | 2016/08/17 | ||
| More literature | Exposing the Inner Behavior of a Quasi-Resonant Flyback Converter | 2013/10/29 | ||
| Test report | PMP8655 Test Results | 2013/10/11 | ||
| Application note | LM5023-2EVM Notebook Adapter | 2013/02/12 | ||
| Product overview | LM5023 Product Bulletin | 2013/02/08 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
LM5023-2NBEVM — LM5023 19V 65W 노트북 어댑터 평가 모듈
The Texas Instruments LM5023-2NBEVM evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LM5023 AC-DC Quasi-Resonant Current Mode PWM Controller. This is a 65W evaluation modules for off-line notebook adapter applications.
UCC24630EVM-636 — UCC24630 65W AC/DC 어댑터
This is a high efficiency 65W AC/DC design using UCC24630 Synchronous Rectification Controller for a Universal input (85Vac to 265Vac) to 19.5V @3.33A output exceeding CoC-5 Tier2 and DOE Level VI performance requirements for external power supplies.
UCC28740EVM-525 — UCC28740EVM-525 평가 모듈
The UCC28740EVM-525 evaluation module is a 10W off-line discontinuous mode (DCM) flyback converter that provides constant-voltage (CV) and constant-current (CC) output regulation. It uses optical coupler feedback for tight voltage regulation and improved the transient response to large load steps (...)
LM5023 Unencrypted PSpice Transient Model Package (Rev. A)
많은 TI 레퍼런스 설계에는 LM5023이(가) 포함됩니다.
레퍼런스 디자인 선택 툴을 사용하여 애플리케이션 및 매개 변수에 가장 적합한 설계를 검토하고 식별할 수 있습니다.
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| VSSOP (DGK) | 8 | 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