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80V Bidirectional 4-Switch Synchronous Buck-Boost Controller
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概览
描述
The ISL81801 is a true bidirectional 4-switch synchronous buck-boost controller with peak and average current sensing and monitoring at both ends. With wide input and output voltage ranges, the controller is suitable for industrial, telecommunication, other industrial applications.
The ISL81801 uses a proprietary buck-boost control algorithm with valley current modulation for Boost mode and peak current modulation for Buck mode control.
The ISL81801 has four independent control loops for input and output voltages and currents. Inherent peak current sensing at both ends and cycle-by-cycle current limit of this family of products ensures high operational reliability by providing instant current limit in fast transient conditions at either end and in both directions. It also has two current monitoring pins at both input and output to facilitate Constant Current (CC) limit and other system management functions. CC operation down to low voltages avoids any runaway condition at over load or short-circuit conditions. In addition to multilayer overcurrent protection, it also provides full protection features such as OVP, UVP, OTP, average and peak current limit on both input and output to ensure high reliability in both unidirectional and bidirectional operation. The unique DE/Burst mode at light-load dramatically lowers standby power consumption with consistent output ripple over different load levels.
The IC is packaged in a space-conscious 32 LD 5mm × 5mm TQFN package or easy to assemble 4.4mm × 9.7mm 38 LD HTSSOP package. Both packages use an EPAD to improve thermal performance and noise immunity. Low pin count, fewer external components, and default internal values make the ISL81801 an ideal solution for time to market simple power supply designs.
特性
- Single inductor 4-switch buck-boost controller
- On-the-fly bidirectional operation with independent control of voltage and current on both ends
- Proprietary algorithm for smoothest mode transition
- MOSFET drivers with adaptive shoot-through protection
- Wide input voltage range: 4.5V to 80V
- Wide output voltage range: 0.8V to 80V
- Supports startup into pre-biased rails
- Programmable frequency: 100kHz to 600kHz
- Supports parallel operation current sharing with cascade phase interleaving
- External sync with clock out or frequency dithering
- External bias for higher efficiency for 8V to 36V input
- Output and input current monitor
- Selectable PWM mode operation between PWM/DE/Burst modes
- Accurate EN/UVLO and PGOOD indicator
- Low shutdown current: 2.7µA
- Complete protection: OCP, SCP, OVP, OTP, and UVP
- Dual-level OCP with average current and pulse-by-pulse peak current limit, also provides Short Circuit Protection (SCP)
- Selectable OCP response with either hiccup or constant current mode
- Negative pulse-by-pulse peak current limit
应用
应用
- Battery backup
- UPS/storage systems
- Battery powered industrial applications
- Renewable energy
- Aftermarket automotive
- Redundant power supplies
- Robots and drones
- Medical equipment
- Building and industrial automation
- Security surveillance
设计和开发
软件与工具
软件与工具
| iSim:PE Offline Simulation TooliSim 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.下载: | Simulator | 瑞萨电子 |
开发板与套件
开发板与套件
80V 双向四开关同步升降压控制器
ISL81801EVAL1Z 评测板采用 ISL81801，是一款具有恒定电压/恒定电流输出的 80V 双向同步升降压控制器。100kHz 至 600kHz 的可编程开关频率有助于优化电感尺寸，而强大的栅极驱动器则可实现高功率的升降压输出。该评测板设计适用于高达 120W 的大电流应用。
80V 双向四开关同步升降压控制器
ISL81801EVAL2Z 评测板采用 ISL81801，是一款具有恒定电压/恒定电流输出的 80V 双向同步升降压控制器。100kHz 至 600kHz 的可编程开关频率有助于优化电感尺寸，而强大的栅极驱动器则可实现高功率的升降压输出。该评测板设计适用于高达 240W 的大电流应用。
80V 双向四开关同步升降压控制器演示板
ISL81801DEMO1Z 演示板采用 ISL81801，这是一款 80V 高电压同步升降压控制器，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 600kHz 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高达 20A 的升降压输出。
模块
ECAD 模块
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play_circle_filled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.
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