Synchronous Buck Demo Board with 7V to 40V Input Range, 5V 2.5A Output
The ISL85403DEMO1Z demonstration board allows for quick evaluation of the ISL85403 synchronous buck or boost-buck controller in the synchronous buck configuration. It...
2.5A Regulator with Integrated High-Side MOSFET for Synchronous Buck or Boost Buck Converter
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概览
简介
The ISL85403 is a 40V, 2. 5A synchronous buck or boost-buck controller with an integrated high-side MOSFET and low-side driver. In Buck mode, the ISL85403 supports a wide input range of 3V to 40V. In Boost-Buck mode, the input range can be extended down to 2. 5V and output regulation can be maintained when VIN drops below VOUT, enabling sensitive electronics to remain on in low input voltage conditions. The ISL85403 has a flexible selection of Forced PWM mode and PFM mode. In PFM mode, the quiescent input current is as low as 180µA (AUXVCC connected to VOUT). The load boundary between PFM and PWM can be programmed to cover wide applications. The low-side driver can either be used to drive an external low-side MOSFET for a synchronous buck or left unused for a standard non-synchronous buck. The low-side driver can also be used to drive a boost converter as a preregulator followed by a buck controlled by the same IC, which greatly expands the operating input voltage range down to 2. 5V or lower. ISL85403 offers robust current protection. It uses peak current mode control with cycle-by-cycle current limiting. It is implemented with frequency foldback under current limit condition; also, the hiccup overcurrent mode ensures reliable operations under harsh short conditions. The ISL85403 has comprehensive protections against various faults including overvoltage and over-temperature protection.
特性
- Buck mode: input voltage range 3V to 40V
- Boost mode expands operating input voltage lower than 2.5V
- Selectable Forced PWM mode or PFM mode
- 300µA IC quiescent current (PFM, no load); 180µA input quiescent current (PFM, no load, VOUT tied to AUXVCC)
- Less than 5µA (MAX) shutdown input current (IC disabled)
- Operational topologies
- Synchronous buck
- Non-synchronous buck
- Two-stage boost buck
- Non-inverting single inductor buck boost
- Programmable frequency from 200kHz to 2.2MHz and frequency synchronization capability
- ±1% tight voltage regulation accuracy
- Reliable overcurrent protection
- Temperature compensated current sense
- Cycle-by-cycle current limiting with frequency foldback
- Hiccup mode for worst case short condition
- 20 Ld 4x4 QFN package
- Pb-free (RoHS compliant)
应用
| 智能咖啡机 | |
| 应急救援广播系统（船只） | |
| 智能电网故障指示器单元 | |
| 电子给药系统 | |
| 云网关模块 | |
| 符合 ISO12207 标准软件的给药系统 | |
| 4G 模块智能电表的电源解决方案 | |
| 适用于家居自动化或楼宇 HVAC 系统的主执行器 | |
| 采用超级电容器的低功耗后备供电 | |
|
Alexa 语音控制条形音箱 |
|
智能连接的氧气浓缩机控制器 |
| 工业用嵌入式可编程逻辑控制器 (PLC) | |
|
太阳能电池板跟踪器和清洁系统 |
应用
- General purpose
- 24V bus power
- Battery power
- Point of load
- Embedded processor and I/O supplies
文档
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日期 | |
|---|---|---|
| PDF 2.53 MB | 数据手册 | |
| PDF 5.51 MB 日文 | 手册 | |
| PDF 169 KB | 产品变更通告 | |
| PDF 485 KB | 应用文档 | |
| PDF 592 KB | 应用文档 | |
| PDF 1.02 MB | 其他 | |
| PDF 2.35 MB | 应用文档 | |
| PDF 1.29 MB | 手册 - 开发工具 | |
| PDF 509 KB | 应用文档 | |
| PDF 397 KB | 应用文档 | |
| PDF 650 KB | 应用文档 | |
| PDF 387 KB | 应用文档 | |
| PDF 349 KB | 应用文档 | |
13 items
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设计和开发
软件与工具
软件与工具
| Software title
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Software type
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公司
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|---|---|---|
| iSim:PE Offline Simulation Tool iSim Personal Edition (iSim:PE) speeds the design cycle and reduces risk early in any project, identifying parts that can be used in current as well as next-generation designs.
|
Simulator | 瑞萨电子 |
1 item
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开发板与套件
开发板与套件
Buck-Boost EVB with 8V to 40V Input Range, 12V 1A Output
The ISL85403EVAL2Z board allows for quick evaluation of the ISL85403 synchronous buck or boost-buck controller in the non-inverting buck-boost configuration. It is a...
模型
ECAD 模块
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Processing table
| 2033 12月 | QFN | Tray | 1470 | 获取样片, | |
| 2033 12月 | QFN | Reel | 6000 | ||
| 2033 12月 | QFN | Reel | 1000 |
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