HFC0310

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Fixed Frequency Flyback Controller, Low Standby Power



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Product Description

The HFC0310 is a flyback controller with fixed-frequency operation.  The controller uses peak current mode to provide excellent transient response and ease loop compensation. When the output power falls below a given level, the controller enters burst mode to lower the stand-by power consumption. An external capacitor connected between the FSET pin and GND programs the HFC0310 switching frequency. Otherwise, the HFC0310 uses a frequency shaping function that greatly reduces the noise level, and reduces the cost of the EMI filter. The HFC0310 provides various protections, such as thermal shutdown, VCC under-voltage lockout, over-load protection, over-voltage protection, and short-circuit protection. The HFC0310 is available in a SOIC8 package.

Product Features

  • Programmable switching frequency up to 600kHz
  • Frequency shaping (±3.5%)
  • Current-mode operation
  • Very low start-up current (12μA)
  • Very low standby power consumption via active-burst mode
  • Internal 350ns leading-edge blanking
  • Built-in 3ms soft-start function
  • Internal slope compensation
  • Built-in PRO pin pull-up (>3.25V) auto-restart function
  • Over-temperature protection
  • VCC under-voltage lockout with hysteresis
  • Over-voltage protection on VCC
  • Time-based over-load protection
  • Short-circuit protection

Parametrics

  • Vac (min) (V)85
  • fsw (max) (kHz)600
  • Vac (max) (V)305
  • Vfb (V)999
  • VCC (max) (V)30
  • Typical Pmax (W)120
  • PackageSOIC-8
  • TypeController
  • GradeCatalog
  • Control MethodFixed Frequency
  • Power Range DefinedNo

Evaluation Kit

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Kit details

The EVHFC0310-S-00A is an evaluation board for the HFC0310. It is configured to provide a regulated 12V output at up to 0.6A load current, and 6V output at up to 0.1A load current from a 85VAC - 420VAC input.

HFC0310 uses peak current mode to provide excellent transient response and ease loop compensation. When the output power falls below a given level, the controller enters burst mode to lower the stand-by power consumption.

An external capacitor connected between the FSET pin and GND programs the HFC0310 switching frequency. Otherwise, the HFC0310 uses a frequency shaping function that greatly reduces the noise level, and reduces the cost of the EMI filter.

$25.00 + tax