80V 双同步降压控制器评估板
ISL81802EVAL1Z 双相评估板采用 ISL81802，这是一款 80V 双同步降压控制器，可提供外部软启动、独立启用功能，并且集成了 UV/OV/OC/OT 保护功能。 100kHz 至 1MHz 的可编程开关频率帮助优化电感尺寸，强大的栅极驱动器提供保证 20A 的降压输出。 ISL81802EVAL1Z...
概览
简介
The ISL81802 is a dual synchronous buck controller that generates two independent outputs or one output with two interleaved phases for a wide variety of applications in industrial and general purpose segments. With a wide input and output voltage ranges, the controller is suitable for telecommunication, data center, and computing applications.
The ISL81802 uses peak current mode control with phase interleaving for the two outputs. Each output has a voltage regulator, current monitor, and average current regulator to provide independent average voltage and current control. The internal Phase-Locked Loop (PLL) oscillator assures an accurate frequency setting from 100kHz to 1MHz, and the oscillator can be synchronized to an external clock signal for frequency synchronization and phase interleave paralleling applications. This PLL circuit can output a phase-shift-programmable clock signal that is expanded to three, four, and six phases with required interleaving phase shift.
The ISL81802 features programmable soft-start and accurate threshold enable functions along with a power-good indicator to simplify power supply rail sequencing. It also provides full protection features such as OVP, UVP, OTP, and average and peak current limit on both outputs to ensure high reliability.
The IC is packaged in a space-saving 32 Ld 5mm × 5mm TQFN or an easy to assemble 4.4mm × 9.7mm 38 Ld HTSSOP package. Both packages use an EPAD to improve thermal performance and noise immunity. The full feature design with low pin count makes the ISL81802 an ideal solution for quick time to market simple power supply designs.
特性
- Wide input voltage range: 4.5V to 80V
- Wide output voltage range: 0.8V to 76V
- Four MOSFET drivers with adaptive shoot-through protection
- Constant output voltage and output current feedback loop control
- Light-load efficiency enhancement
- Low ripple diode emulation and burst mode operation
- Programmable soft-start
- Supports startup into pre-biased rails
- Programmable frequency: 100kHz to 1MHz
- Supports current sharing with cascade phase interleaving
- External clock sync
- Clock out with accurate phase angle controlled by PLL or frequency dithering
- PGOOD indicator
- Output current monitor
- Selectable mode between PWM/DE/Burst
- Accurate EN/UVLO threshold: ±2%
- Low shutdown current: 5µA
- Complete protection: OCP (pulse by pulse and optional hiccup or constant current mode), OVP, OTP, and UVP
应用
应用
- Telecommunication
- Server and data center
- Automotive electronics
- Industrial equipment
- Power system
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
80V 双同步降压控制器评估板
ISL81802EVAL2Z 双输出评估板采用 ISL81802，这是一款 80V 双同步降压控制器，可提供外部软启动、独立启用功能，并且集成了 UV/OV/OC/OT 保护功能。 100kHz 至 1MHz 的可编程开关频率帮助优化电感尺寸，强大的栅极驱动器保证每相高达 10A 的输出。 ISL81802EVAL2Z...
80V 双同步降压控制器评估板
ISL81802EVAL3Z 四相评估板采用 ISL81802，这是一款 80V 双同步降压控制器，可提供外部软启动、独立启用功能，并且集成了 UV/OV/OC/OT 保护功能。 100kHz 至 1MHz 的可编程开关频率帮助优化电感尺寸，强大的栅极驱动器提供保证 40A 的降压输出。 ISL81802EVAL3Z...
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
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支持
Renesas 样片
选择下单器件型号:
| 下单器件型号 | 样片 |
|---|---|
| ISL81802FRTZ-T | Availability |
| ISL81802FVEZ-T | Availability |
视频和培训
High-Performance 80V Buck-Boost and Dual-Phase Controllers
A brief overview of the highest-performance 80V DC/DC controllers and why they are the best solutions for data center servers, 48V telecom and rugged industrial equipment designs that require extra voltage margin.
Video List
新闻和博客
| 瑞萨电子推出业界超高性能80V双向升降压和两相降压直流DC/DC控制器 | 新闻 | 2020年10月21日 |
