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.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LM5023 AC-DC Quasi-Resonant Current Mode PWM Controller datasheet (Rev. E) | PDF | HTML | 2016年 1月 6日 |
| White paper | Power Electronics in Motor Drives: Where is it? (Rev. A) | 2019年 10月 1日 | ||
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018年 6月 25日 | ||
| More literature | Design review of a 2-kW parallelable power supply module | 2016年 8月 17日 | ||
| More literature | Design review of a 2-kW parallelable power supply module (PPT) | 2016年 8月 17日 | ||
| More literature | Exposing the Inner Behavior of a Quasi-Resonant Flyback Converter | 2013年 10月 29日 | ||
| Test report | PMP8655 Test Results | 2013年 10月 11日 | ||
| Application note | LM5023-2EVM Notebook Adapter | 2013年 2月 12日 | ||
| Product overview | LM5023 Product Bulletin | 2013年 2月 8日 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
LM5023-2NBEVM — LM5023 19V 65W 筆記型電腦變壓器評估模組
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 變壓器
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 評估模組
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 (...)
PMP8740 — 具有 92% 全負載效率的 2-kW 工業用交流/直流電池充電器參考設計
TIDA-00519 — 65W 高效率 CoC-5 tier2/DOE Level VI AC 變壓器
PMP4408 — 離線 AC/DC 120W 多輸出返馳電源供應參考設計
PMP7991 — 高且廣泛的 AC Vin 準諧振隔離返馳參考設計
PMP8955 — 可程式編輯的輸出恆壓 - 定電流 (CVCC) 準諧振返馳充電器
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VSSOP (DGK) | 8 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。