LM5035C
- 105-V and 2-A Half-Bridge Gate Drivers
- Synchronous Rectifier Control Outputs With Programmable Delays
- Reduced Dead Time Between High and Low-Side Drive for Higher Maximum Duty Cycle.
- High Voltage (105 V) Start-Up Regulator
- Voltage Mode Control With Line Feedforward and Volt Second Limiting
- Resistor Programmed, 2-MHz Capable Oscillator
- Programmable Line Undervoltage Lockout and Overvoltage Protection
- Internal Thermal Shutdown Protection
- Adjustable Soft Start
- Versatile Dual Mode Overcurrent Protection With Hiccup Delay Timer
- Cycle-by-Cycle Overcurrent Protection
- Direct Opto-coupler Interface
- Logic Level Synchronous Rectifier Drives
- 5-V Reference Output
- Packages:
- HTSSOP-20 (Thermally Enhanced)
- WQFN-24 (4mm × 5mm)
The LM5035C half-bridge controller and gate driver contains all of the features necessary to implement half-bridge topology power converters using voltage mode control with line voltage feedforward.
The LM5035C is a functional variant of the LM5035B half-bridge PWM controller. The amplitude of the SR1 and SR2 waveforms are 5 V instead of the VCC level. Also, the soft-stop function is disabled in the LM5035C.
The LM5035, LM5035A, LM5035B, and LM5035C include a floating high-side gate driver, which is capable of operating with supply voltages up to 105 V. Both the high-side and low-side gate drivers are capable of 2-A peak. An internal high-voltage start-up regulator is included, along with programmable line undervoltage lockout (UVLO) and overvoltage protection (OVP). The oscillator is programmed with a single resistor to frequencies up to 2 MHz. The oscillator can also be synchronized to an external clock. A current sense input and a programmable timer provide cycle-by-cycle current limit and adjustable hiccup mode overload protection. The differences between LM5035, LM5035A, LM5035B, and LM5035C are summarized in the Device Comparison Table.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | LM5035C PWM Controller With Integrated Half-Bridge and SyncFET Drivers datasheet (Rev. D) | PDF | HTML | 2016/3/23 |
設計與開發
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LM5035CEVAL — 用於 LM5035C 的評估板
LM5035C 評估板旨在為設計工程師提供基於半橋拓撲結構的全功能電源轉換器，以評估 LM5035C 降壓穩壓器。LM5035C 是 LM5035B 半橋 PWM 控制器的功能變體。SR 控制訊號的振幅為 5V，而非 VCC 準位。評估板採用業界標準的四分之一磚型封裝尺寸。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WQFN (NHZ) | 24 | Ultra Librarian |
| HTSSOP (PWP) | 20 | Ultra Librarian |
訂購與品質
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。