可提供此产品的更新版本
功能与比较器件相同但引脚有所不同。
LM25122-Q1
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AEC-Q100 Qualified with the following results:
- Device Temperature Grade 1: -40°C to +125°C Ambient Operating Temperature Range
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C6
- Maximum Input Voltage : 42 V
- Min Input Voltage : 3 V (4.5 V for startup)
- Output Voltage up to 50 V
- Bypass (VOUT = VIN) Operation
- 1.2 V Reference with ±1.0% Accuracy
- Free-Run and Synchronizable Switching to 600 kHz
- Peak Current Mode Control
- Robust 3 A Integrated Gate Drivers
- Adaptive Dead-Time Control
- Optional Diode Emulation Mode
- Programmable Cycle-by-Cycle Current Limit
- Hiccup Mode Overload Protection
- Programmable Line UVLO
- Programmable Soft-Start
- Thermal Shutdown Protection
- Low Shutdown Quiescent Current: 9 µA
- Programmable Slope Compensation
- Programmable Skip Cycle Mode Reduces Standby Power
- Allows External VCC Supply
- Inductor DCR Current Sensing Capability
- Multiphase Capability
- Thermally Enhanced 20-Pin HTSSOP
The LM25122 is a multiphase capable synchronous boost controller intended for high-efficiency synchronous boost regulator applications. The control method is based upon peak current mode control. Current mode control provides inherent line feed-forward, cycle-by-cycle current limiting and ease of loop compensation.
The switching frequency is programmable up to 600 kHz. Higher efficiency is achieved by two robust N-channel MOSFET gate drivers with adaptive dead-time control. A user-selectable diode emulation mode also enables discontinuous mode operation for improved efficiency at light load conditions.
An internal charge pump allows 100% duty cycle for high-side synchronous switch (Bypass operation). A 180º phase shifted clock output enables easy multi-phase interleaved configuration. Additional features include thermal shutdown, frequency synchronization, hiccup mode current limit and adjustable line undervoltage lockout.
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 | LM25122-Q1 Wide-Input Synchronous Boost Controller With Multiple Phase Capability 数据表 (Rev. B) | PDF | HTML | 2016-5-27 | ||
| 白皮书 | 电源的传导 EMI 规格概述 | 英语版 | 2020-10-14 | |||
| 白皮书 | An overview of radiated EMI specifications for power supplies | 2018-6-5 | ||||
| 应用简报 | Improve DC/DC Regulator EMI for Free with Optimized Power Stage Layout | 2017-11-13 | ||||
| 技术文章 | Get loud with a 700W automotive audio amplifier for infotainment systems | PDF | HTML | 2017-6-15 | |||
| 更多文献资料 | TI Automotive External Amplifiers (Rev. A) | 2017-2-3 |
设计与开发
如需其他信息或资源,请点击以下任一标题进入详情页面查看(如有)。
SNVC196 — LM25122-Q1 Design Calculator
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PMP31114 — 适合 3V 冷启动的同步 SEPIC 参考设计
TIDA-00699 — 具有冷启动运行、瞬态保护功能及 EMI 滤波器的前端电源参考设计
该解决方案旨在作为 10-15W 系统的通用型汽车非电池前端电源。此解决方案还强调 EMI/EMC 测试和合规性,以帮助设计人员满足与生产汽车电子子系统相关的监管要求。
TIDA-01534 — 汽车类非电池电源双相升压转换器参考设计
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TIDA-01610 — 适用于音频放大器的汽车跟踪电源参考设计
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 20 | Ultra Librarian |
订购和质量
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