LM5039
- 105V / 2A Half-Bridge Gate Drivers
- Synchronous Rectifier Control Outputs with Programmable Delays
- High Voltage (105V) Start-up Regulator
- Voltage-mode Control with Line Feed-Forward and Volt • Second Limiting
- Programmable Average Current Limit Balances the Half-Bridge Capacitor Divider Voltage in an Overload Condition
- Programmable Hiccup Mode Timer Reduces Power Dissipation During a Continuous Overload Event
- Adjustable Peak Cycle-by-Cycle Over Current Protection
- Resistor Programmed, 2MHz Capable Oscillator
- Patented Oscillator Synchronization
- Programmable Line Under-Voltage Lockout
- Internal Thermal Shutdown Protection
- Adjustable Soft-Start
- Direct Opto-Coupler Interface
- 5V Reference Output
Packages
- HTSSOP-20 (Thermally enhanced)
- WQFN-24 (4mm x 5mm)
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The LM5039 Half-Bridge Controller/Gate Driver contains all of the features necessary to implement half-bridge topology power converters using voltage mode control with line voltage feed-forward. The LM5039 is a functional variant of the LM5035B half-bridge PWM controller, featuring average current limit during an overload event to balance the center-point of the half-bridge capacitor divider. The floating high-side gate driver is capable of operating with supply voltages up to 105V. Both the high-side and low-side gate drivers are capable of 2A peak. An internal high voltage startup regulator is included, along with programmable line undervoltage lockout (UVLO). The oscillator is programmed with a single resistor to frequencies up to 2MHz. The oscillator can also be synchronized to an external clock. A current sense input provides peak cycle-by-cycle and average current limit. Other features include adjustable hiccup mode overload protection, soft-start, revision reference, and thermal shutdown.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | LM5039 Half-Bridge PWM Controller with Average Current Limit 数据表 (Rev. D) | 2013-3-21 | |||
| 选择指南 | 电源管理指南 2018 | 2018-7-31 | ||||
| 应用手册 | Average Current Limit Balances Center Point of Half-Bridge Input Caps | 2010-4-28 |
设计与开发
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LM5039EVAL — 用于 LM5039 的评估板
LM5039 评估板旨在为设计工程师提供基于半桥拓扑结构的全功能电源转换器,用于评估 LM5039 控制器。LM5039 是 LM5035B 控制器的功能型号,其特点是在过载事件期间采用平均电流限制,以平衡半桥电容分压器的中心点。该评估板采用业界通用的四分之一砖型封装。
PMP10110 — 具有 PFC 功能的通用交流输入至 30Vmax@6A 铅酸电池充电器参考设计
PMP10110 设计将通用输入交流电压转换为隔离式 17V...30V@6A,适用于为铅酸电池或锂离子电池充电。转换器为恒定电压和恒定电流发生器,可通过两个 PWM 信号来设置输出电压(充电电平)和电流的设定值。第一级为 PFC 升压电路,而隔离和电流稳定由直流/直流半桥级执行。隔离式准谐振反激式转换器可提供所有内部电压,并为外部负载(风扇或模拟部分)提供一些额外电流,具体为 12V@400mA 和 5V@300mA。
PMP7246 — 采用 PSFB ZTE 和 HSHB 的 36-60V 输入、350W 慢漏极调制功率转换器参考设计
这是一种 350W 高速全桥相移 ZVT 同步整流直流/直流参考设计。此设计适用于电信应用,用于提供射频功率放大器级。此设计采用 UCC28950 电压模式正向和平均电流限制反向转换器(二象限转换器)。此设计可在 200us 内调制 20V 至 32V 输出电压(最高 200uF 的电容负载),因此称为:慢漏调制。该转换器还具有满载步进功能。这是一种适用于高度精密型电信应用的极小设计。这套系统还可用于所有其他二象限应用。输 入电压范围:36VDC-60VDC;输出电压:20VDC…32VDC(可调);输出电流:12A(18A 峰值)。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| WQFN (NHZ) | 24 | Ultra Librarian |
| HTSSOP (PWP) | 20 | Ultra Librarian |
订购和质量
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