概览
描述
ISL85003 和 ISL85003A 都是同步降压稳压器，集成了高边和低边 FET。 该稳压器可在 4.5V 至 18V 的输入电压范围内工作，并可非常高效地连续输出 3A 电流。 全部采用超小型的 3mmx4mm DFN 封装。 ISL85003 采用 Intersil 专有的晶圆厂工艺设计，以提供超低 rDS(ON) 的 FET，并具有已优化的电流模式控制器。 高边 NFET 的 rDS(ON) 为 65mΩ，而低边 NFET 的 r DS(ON) 为 45mΩ。 借助这两个 FET，该器件可为负载提供非常高效的功率。 ISL85003 可以在 DCM 和 CCM 之间自动切换，以实现 DCM 中的轻负载效率。 CCM 中的开关频率在内部设定为 500kHz。 该器件在宽线路、负载和温度范围内提供 ±1% 的最大静态调节容差。 用户可使用外部电阻器调节输出，可调节低至 0.8V。 将 EN 拉到 0.6V 以上可启动控制器。 稳压器支持预偏置输出。 故障保护功能包括正或负过流条件下的内部电流限制、输出和输入欠压和过压检测以及过温监控电路。
特性
- 4.5V 至 18V 的输入电压范围
- 0.8V ±1% 起的可调节输出电压
- 效率高达 95%
- 带低压检测测定的集成式自举二极管
- 电流模式控制
- DCM/CCM
- 内部或外部补偿选择
- 500kHz 切换频率选择
- ISL85003 具有高达 2MHz 的外部同步
- ISL85003A 具有可调节软启动时间
- 开漏 PG 窗口比较器
- 内置保护
- 正序及负序过流保护
- 过压保护及热保护
- 输入过压保护
- 小型 12 引脚 3mmx4mm 双方扁平无引线（DFN）封装
产品对比
应用
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| 类型 | 文档标题 | 日期 |
| 数据手册 | PDF 5.21 MB | |
| 白皮书 | PDF 378 KB | |
| 应用说明 | PDF 592 KB | |
| 应用说明 | PDF 509 KB | |
| 应用说明 | PDF 397 KB | |
| 应用说明 | PDF 650 KB | |
| 应用说明 | PDF 387 KB | |
| 应用说明 | PDF 349 KB | |
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设计和开发
软件与工具
软件与工具
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| iSim:PE 离线模拟工具 iSim Personal Edition（iSim:PE ）可加快设计周期并降低项目早期风险，确定可用于当前和下一代设计的部件。
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Simulator | 瑞萨电子 |
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开发板与套件
演示
Highly Efficient 3A Synchronous Buck Regulator Demonstration Boards
The ISL85003DEMO1Z demonstration board is intended for use in point-of-load applications sourcing from 4.5V to 18V. The board is used to demonstrate the performance of the ISL85003 high-efficiency synchronous buck regulator. The ISL85003 is offered in a 4mm x 3mm dual flat no lead (DFN)...
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评估
Highly Efficient 3A Synchronous Buck Regulator Evaluation Board
The ISL85003EVAL2Z evaluation kit is intended for use in point-of-load applications sourcing from 4.5V to 18V. The kit is used to demonstrate the performance of the ISL85003 low quiescent current, high-efficiency synchronous buck regulator. The ISL85003 is offered in a 4mm x 3mm dual flat no...
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演示
Power Supply Reference Demo Board for the AMD Zynq Ultrascale+™ MPSoC
The ISLUSPLUS-UC1DEMO1Z and ISLUSPLUS-UC2DEMO1Z designs provide a power supply reference solution for the AMD Zynq™ UltraScale+™ MPSoC.
The power supply rail consolidation in the ISLUSPLUS-UC1DEMO1Z design is based on the configuration for always on, optimized for cost (Use Case 1). The...
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演示
Power Supply Reference Demo Board for the AMD Zynq Ultrascale+™ MPSoC
The ISLUSPLUS-UC1DEMO1Z and ISLUSPLUS-UC2DEMO1Z designs provide a power supply reference solution for the AMD Zynq™ UltraScale+™ MPSoC.
The power supply rail consolidation in the ISLUSPLUS-UC1DEMO1Z design is based on the configuration for always on, optimized for cost (Use Case 1). The...
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参考设计
Wi-Fi 智能插线板演示套件
Wi-Fi 智能插线板是一种广受欢迎的家用电器，广泛应用于多个连接设备的智能联动控制和节电，如配备了外围设备的计算机，电视机和机顶盒、路由器等。
本款 Wi-Fi 智能插线板演示套件采用了有着丰富阵容和多种功能从而使其拥有广泛用途的 RL78/G13 微控制器与 ISL85003 降压调节器。
Disclaimer: THIS MATERIAL IS PROVIDED “AS-IS” FOR EVALUATION PURPOSES ONLY. RENESAS ELECTRONICS CORPORATION AND ITS SUBSIDIARIES (collectively,...
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入门
MCEK-RL78G24
有效
RL78/G24 Motor Control Evaluation Kit
RL78/G24 电机控制评估套件是一款永磁同步电机（无刷直流电机）控制评估套件，配备 RL78/G24 微控制器，可轻松评估电机控制。 您可以从瑞萨电子网站下载示例软件，使用该软件就可以立即开始评估电机控制。
包含硬件套件
- 逆变器板（RTK0EMGPLVB00000BJ）
- RL78/G24 CPU 卡（RTK0EMG240C00000BJ）
- 通信板（RTK0EMXC90Z00000BJ）
- 永磁同步电机（TG-55L-KA）
- 各种电缆、螺丝...
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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.
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