HF500-15

New
Full-Featured Flyback Regulator with integrated 700V MOSFET, up to 15W


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Product Description

The HF500-15 is a fixed-frequency, current-mode regulator with built-in slope compensation. It combines a 700V MOSFET and a full-featured controller into one chip for a low-power, offline, flyback, switch-mode power supply. At medium and heavy loads, the regulator works in a fixed frequency with frequency jittering, which helps to spread energy out in a conducted mode. During a light-load condition, the regulator freezes the peak current and reduces its switching frequency to fOSC(min) to offer excellent efficiency at light load. At very light loads, the regulator enters burst mode to achieve low standby power consumption. Full protection features include thermal shutdown, brown-in and brownout, VCC under-voltage lockout (UVLO), overload protection (OLP), short-circuit protection (SCP), input and output over-voltage protection (OVP), and over-temperature protection (OTP) The HF500-15 features timer-based fault detection and over-power compensation to ensure that the overload is independent of the input voltage. The HF500-15 is available in a SOIC8-7B package.

Product Features

  • 具有高单脉冲雪崩能量的700V/4.5W集成MOSFET
  • 内置斜坡补偿的定频电流模式控制模式运行
  • 轻载时频率下降到fOSC (min)
  • 突发模式以降低空载损耗
  • 降低电磁干扰信号的抖频功能
  • 过功率补偿
  • 内部高压电流源
  • 带迟滞的VCC欠压锁定( UVLO )
  • 可编程的输入母线过压保护和输出过压保护
  • 具有可编程延迟功能的过载保护( OLP )
  • TIMER脚闭锁保护
  • 热关机(带迟滞的自动重启)
  • 短路保护
  • 可编程软启动

Parametrics

  • Vac (min) (V)85
  • fsw (max) (kHz)25
  • Vbr (V)700
  • Vac (max) (V)305
  • VCC (max) (V)30
  • Typical Pmax (W)15
  • PackageSOIC8-7
  • TypeRegulator
  • GradeCatalog
  • Control MethodFixed Frequency
  • Power Range DefinedNo

Evaluation Kit

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Kit details

The HF500-15 is a fixed-frequency, current-mode regulator with built-in slope compensation. The HF500-15 combines a 700V MOSFET of high-avalanche ruggedness and a full-featured controller into one chip to create a low-power, offline, flyback, switch-mode power supply.

The EVHF500-15-S-00A evaluation board is designed to demonstrate the capabilities of MPS’s fixed switching frequency, multi-mode flyback regulator. It is designed for general-purpose offline power supplies.

The EVHF500-15-S-00A can meet EN55022 Class B conducted EMI requirements. It has multiple protection functions, including brown in/out, overload protection (OLP), over-voltage protection (OVP), short-circuit protection (SCP), cycle-by-cycle current limiting, and over-temperature protection (OTP).

The EVHF500-15-S-00A specification is listed in the table below.

$30.00 + tax