Dual-Phase Synchronous Boost EVB with 9V to 36V Input Range, 48V 5A Output
The ISL81805EVAL1Z dual-phase evaluation board features the ISL81805, an 80V high voltage dual synchronous boost controller that offers external soft-start, independent...
概览
简介
ISL81805 是一款双通道同步升压控制器，可产生两个独立输出或一个具有两个交错相位的输出，适用于工业和通用领域的各种应用。 该控制器具有较宽的输入和输出电压范围，适用于电信、数据中心和计算应用。
ISL81805 采用峰值电流模式控制，两个输出具有相位交错。 每个输出都有一个电压调节器、电流监视器和平均电流调节器，以提供独立的平均电压和电流控制。 内部锁相环（PLL）振荡器可确保 100 kHz 至 1 MHz 的精确频率设置，并且振荡器可与外部时钟信号同步，以实现频率同步和相位交错并联应用。 PLL 电路可输出相移可编程时钟信号，而该时钟信号可扩展到三相、四相和六相，并具有所需的交错相移。
ISL81805 具有可编程软启动和精确的阈值使能功能，以及一个电源良好指示器，可简化电源轨排序。 它还提供全面的保护功能，如 OVP、UVP、OTP 以及两个输出的平均和峰值电流限制，以确保高可靠性。
该 IC 采用可节省空间的 32 Ld 5 × 5 mm TQFN 封装。
特性
- 宽输入电压范围：4.5V 至 80V
- 宽输出电压范围：5V 至 80V
- 四个 MOSFET 驱动器，具有自适应击穿保护功能
- 恒定输出电压和输出电流反馈环路控制
- 轻载效率提高
- 低纹波二极管仿真和突发模式操作
- 可编程的软启动
- 支持启动至预偏置电源轨
- 可编程频率：100 kHz 至 1 MHz
- 支持具有级联相位交错的均流
- 外部时钟同步
- 通过 PLL 或频率抖动控制的精确相位角输出
- PGOOD 指示器
- 输入电流监视器
- PWM/DE/Burst 三个可选模式
- 精确的 EN/UVLO 阈值：±2%
- 低关断电流：5μA
- 全面保护：OCP（逐脉冲和可选的打嗝或恒流模式）、OVP、OTP 和 UVP
产品对比
应用
应用
- 电信
- 服务器和数据中心
- 汽车电子
- 工业设备
- 电源系统
设计和开发
开发板与套件
开发板与套件
Dual-Output Sync Boost EVB - 9V to 36V Vin Range for 48V 3A Output, 9V to 20V Vin Range for 24V 5A Output
The ISL81805EVAL2Z dual-output evaluation board features the ISL81805, an 80V high voltage dual synchronous boost controller that offers external soft-start,...
Dual-Output Negative-to-Positive EVB, with -36V to -60V Input Range, 28V 20A Output and 5V 20A Output
The ISL81805EVAL3Z dual-output evaluation board, with negative-to-positive voltage conversion features the ISL81805, which is an 80V high voltage, dual synchronous...
Dual-Phase Negative-to-Positive EVB with -36V to -60V Input Range, 28V 20A Output
The ISL81805EVAL4Z dual-phase negative-to-positive voltage conversion evaluation board features the ISL81805, which is an 80V high voltage, dual synchronous boost...
模型
ECAD 模块
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Processing table
| 2033 12月 | TQFN | Reel | 3 | 7.489 | 获取样片, |
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视频和培训
High-performance 80V Dual-phase Buck and Boost Controllers for GaN FETs
An overview of the industry’s first high-performance 80V dual-phase buck and boost controllers optimized to drive GaN FETs. With high efficiency, tight load regulation and current sharing, these devices deliver ideal power solutions for industrial automation, telecommunications, medical and automotive applications.
Video List