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Monolithic Power Systems (MPS) HF900 Flyback Regulators

Monolithic Power Systems (MPS) HF900 Flyback Regulators are offline switching regulators with an integrated 900V MOSFET. These regulators have a programmable fixed switching frequency up to 300kHz and a frequency jittering function to reduce the noise level. A single resistor programs the operating frequency externally. This allows the power supply's radiated energy to avoid interference with wireless communication. The peak-current-mode control provides superior transient response and eases loop compensation. 

Designers can use the HF900 regulators to deliver power regulation for AC/DC applications requiring high reliability. These applications include smart meters, industrial controls, large appliances, and products powered by unstable AC grids. Because the HF900 series minimizes electromagnetic interference in wireless communication, these regulators are also an ideal option for home and building automation applications.

Features

  • Internal integrated 900V MOSFET
  • Programmable fixed switching frequency up to 300kHz
  • Frequency jittering
  • Current-mode operation
  • Internal high-voltage current source
  • Low standby power consumption via active burst mode
  • Internal leading edge blanking
  • Built-in soft-start function
  • Internal slope compensation
  • Built-in input overvoltage protection
  • Overtemperature protection (OTP)
  • VCC undervoltage lockout with hysteresis
  • Overvoltage protection on VCC
  • Time-based overload protection
  • Short-circuit protection (SCP)

Applications

  • Smart power meters
  • Large appliances
  • Industrial controls
  • AC/DC supplies in areas where power grids may be unstable

Typical Application

Monolithic Power Systems (MPS) HF900 Flyback Regulators

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發佈日期: 2017-03-30 | 更新日期: 2022-05-20