5A High-Efficiency Synchronous Buck Regulator Demonstration Boards
The ISL85005DEMO1Z platform allows quick demonstration of the high-performance features of the ISL85005 buck regulator.
The ISL85005 is a 4.5V to 18V input, 5A...
概览
简介
ISL85005 和 ISL85005A 都是单片同步降压稳压器，集成了 5A 18V 高压侧和低压侧 FET。 这些器件为高压侧栅极驱动器提供了一个集成自举二极管，以减少外部元件数量。 这些器件还具有宽输入电压范围，可支持输入电压来自多节电池或稳压 5V 和 12V 电源轨的应用。 ISL85005 和 ISL85005A 都是通过电流模式控制调节输出电压，并都具有一个内部振荡器。 ISL85005 的开关频率在内部设定为 500kHz，并可同步至频率范围为 300kHz 至 2MHz 的外部时钟信号。 ISL85005A 具有固定的 500kHz 开关频率。 ISL85005 有一个固定的 2.3ms 软启动，而 ISL85005A 具有可编程软启动功能，可限制启动期间的励磁涌流。 当 SS 引脚悬空时，ISL85005A 的软启动时间也是 2.3ms。 ISL85005 可配置为强制连续导通模式（CCM）或二极管仿真模式（DEM）。 DEM 可在轻负载条件下实现高效率。 ISL85005A 始终在强制 CCM 下运行。 ISL85005 和 ISL85005A 具有内置保护功能，包括输入 UVLO 保护、输入和输出过压保护、高压侧逐周期电流限制、低压侧正向电流限制和反向电流限制以及热关断保护。
特性
- 4.5V 至 18V 输入电压范围
- 内部 5A 18V 高压侧和低压侧 MOSFET 开关
- ±1%，0.8V 反馈电压基准
- 带低压检测测定的集成式自举二极管
- 具有内部斜率补偿的电流模式控制
- 内部或外部补偿选择
- 默认内部设置的 500kHz 开关频率
- 与外部时钟同步能力（ISL85005）
- 二极管仿真模式（DEM）和强制 CCM（FCCM）选项（ISL85005）
- 可调软启动时间（ISL85005A）
- 输出功率正常（PG）指示器
- 输入欠压锁定（UVLO）、输入和输出过压保护
- 高压侧逐周期电流限制、低压侧正向和反向过流保护以及热关断
- 小型 12 引脚 3mm x 4mm 双方扁平无引线（DFN）封装，带有 EPAD，可增强散热性能
产品对比
应用
文档
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开发板与套件
开发板与套件
5A High-Efficiency Synchronous Buck Regulator Evaluation Board
The ISL85005EVAL1Z platform allows for a quick evaluation of the high-performance features of the ISL85005 buck regulator.
The ISL85005 is a 4.5V to 18V input, 5A...
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
| DFN | Tube | 3 | |||
| DFN | Reel | 3 | |||
| DFN | Reel | 3 | 1.21 |
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视频和培训
12V Sync Buck Regulator Family Delivers Up to 14A
Find out how Intersil's high efficient, compact 12V synchronous buck regulator family can meet your power requirements for 12V rails in industrial and infrastructure applications.
Transcript
12V Synchronous Buck Regulator Family
Today I would like to introduce one of the most efficient and compact synchronous buck regulator families in the marketplace today.
There are many 12V rails in industrial applications today that need a buck converter to step the voltage down to a lower voltage and deliver up to 14A. Some of these applications often require a very efficient and compact solution. The highly integrated buck regulators listed here allow the users to meet all these requirements.
The ISL85009, ISL85012 and ISL85014 are pin compatible, very efficient and are able to deliver up to 14A. In applications that need less than 5A, Renesas offers ISL85003 and ISL85005 that are pin compatible. The ISL85009, ISL85012 and ISL85014 can operate from 3.8V to 18V input voltage, and the output voltage can be set as low as 0.6V. This family is highly integrated. The high-side and low-side FETs, with a bootstrap diode and compensation circuits are all integrated which helps to reduce the size, cost and bill of material.
This family is also highly reliable. It has high-side and low-side overcurrent protection, input and output overvoltage protection, over-temperature protection and negative current protection all integrated in the IC. This family also provides full feature sets and design flexibility to customers.
For instance, the selectable OCP scheme feature gives flexibility to the power supply designer to choose between hiccup and latch-off OCP mode, depending on their application requirements. Finally, the ISL85009, ISL85012 and ISL85014 are pin compatible, highly efficient and capable of delivering up to 14A in a very small 3.5mm x 3.5mm TQFN package.
As you see in the efficiency curve here, the ISL85009 provides one of the most efficient solution in the marketplace today. To support our customers with this family, we have developed several evaluation and demo boards.
Supporting tools such as iSim model, PowerCompass, schematic and Gerber files are all available online for this family on our website.
Video List