HF900

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900V 离线开关调节器



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Product Description

HF900 是一款集成了 900V MOSFET 的反激调节器。HF900 可最大限度地减少外部元器件的使用,为高可靠性的 AC/DC 应用提供极好的功率调节。这些应用包括智能仪表、大型电器、工业控制以及由不稳定交流电网供电的产品。

此调节器使用峰值电流控制模式,提供了极好的瞬态响应和简单的环路补偿。当输出功率下降到一定水平以下时,稳压器进入突发模式以降低待机功耗。

MPS 专有的 900V 单片工艺能够在 900V 功率FET的同一硅片上使能过温保护(OTP)并提供精确热保护。此外,它还提供全套保护功能,如 VCC 欠压锁定保护、过载保护、过压保护和短路保护。

HF900 适用于家居和建筑自动化应用,可最大限度地减少无线通信电磁干扰。由于工作频率由单个电阻器外部编程而成,因此可以设计电源辐射能以避免干扰无线通信。

除频率可编程之外,HF900 还具有抖频功能,不仅大大降低了噪声水平,还降低了EMI滤波器的成本。

HF900 采用 SOIC14-11 和 PDIP8-7EP 封装。

Product Features

  • 内部集成 900V MOSFET
  • 可编程的固定开关频率高达 300kHz
  • 抖频功能
  • 电流控制工作模式
  • 内部高压电流源
  • 主动突发模式以降低待机功耗
  • 内部前沿消隐
  • 内置软启动功能
  • 内部斜坡补偿
  • 内置输入过压保护
  • 过温保护(OTP)
  • 带迟滞的 VCC 欠压锁定
  • VCC 过压保护
  • 基于时间的过载保护
  • 短路保护(SCP)

Parametrics

  • Vac (min) (V)85
  • fsw (max) (kHz)300
  • Vbr (V)900
  • Vac (max) (V)440
  • VCC (max) (V)24.5
  • Typical Pmax (W)8
  • PackagePDIP8-7EP, SOIC14-11
  • TypeRegulator
  • GradeCatalog
  • Control MethodFixed Frequency
  • Power Range DefinedNo

Evaluation Kit

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Kit details

The HF900 is a flyback regulator with a 900V MOSFET integrated, targeting high AC input voltage application. The switching frequency can be programmed with one external resistor

The EVHF900-P-00A Evaluation Board is designed to demonstrate the capabilities of HF900 and is also designed for off-line high input voltage (85VAC~420VAC) application with triple outputs (13.5V/300mA, 8V/50mA, 8V/50mA). The 8V output rail can power the LDO for MCU power supply.

The EVHF900-P-00A has an excellent performance and meets EN55022 conducted EMI requirements easily with frequency jittering function. It has various protections like Over Temperature Protection (OTP), VCC Under Voltage Lockout (UVLO), Over Load Protection (OLP), Over Voltage Protection (OVP), Short Circuit Protection (SCP) and built-in PRO pin for extra protection setting.

US$ 25.00 + tax


Evaluation Kit

GET THIS KIT

Kit details

The HF900 is a flyback regulator with a 900V MOSFET integrated, targeting high AC input voltage application. The switching frequency can be programmed with one external resistor.

The EVHF900-S-00A Evaluation Board is designed to demonstrate the capabilities of HF900. It is designed for off-line high input voltage (85VAC~420VAC) application with triple outputs (13.5V/300mA, 8V/50mA, 8V/50mA). The 8V output rail can power the LDO for MCU power supply.

The EVHF900-S-00A has an excellent performance and meets EN55022 conducted EMI requirements easily with frequency jittering function. It has various protections like Over Temperature Protection (OTP), VCC Under Voltage Lockout (UVLO), Over Load Protection (OLP), Over Voltage Protection (OVP), Short Circuit Protection (SCP) and built-in PRO pin for extra protection setting.

US$ 25.00 + tax


Reference Materials