Current Resonant ICs

FA6A11N

  • Status:Available

FA6A11N is a switching power supply control IC suitable for LLC current resonance circuits. It facilitates the design of switching power supplies for current resonant converters via a wide range of inputs worldwide. It also incorporates a startup element with an absolute maximum input voltage of 600 V, thereby contributing to circuit miniaturization and low power consumption.

Features

  • Enables configuration of single-converter LLC current resonant power supply systems via a wide range of inputs worldwide
  • Built-in high-side and low-side drive circuits that can directly connect power MOSFETs, operating at 50% duty
  • Built-in start-up circuit enables power supply circuit miniaturization and low power consumption
  • Selectable between normal operation mode, low standby mode and ultra-low standby mode (STB pin)
  • Reduces standby power consumption via burst operation in low standby mode
  • Built-in input filter X capacitor discharge function that reduces loss due to discharge resistance
  • Reduces IC current consumption to 0.9 mA during operation
  • Prevents off-resonance and hard-switching by automatically setting dead time inside the IC
  • Built-in protection against overcurrent (IS pin), overload (VW pin, FB pin), overvoltage (VH pin, VCC pin), and overheating
  • Built-in adjustable-level brown-in/out function (BO pin)
  • Built-in power good signal output (PGS pin)
  • Enables condition settings such as external latch stop, overcurrent protection (IS pin detection) delay time setting, operation setting in standby mode, and PFC availability setting (MODE pin)
  • Built-in low-voltage malfunction prevention function (VCC pin, VB pin)
  • Overcurrent protection operation: Timer match
  • Package: SOP-16 (JEDEC compliant)

Applications

  • Switching Power Supplies

Specifications

Controller type LLC
Applied circuit Detail Current resonance LLC (half bridge)
Frequency (kHz) Selfoscillation
VCC(V) 14 to 27
Built-in start up circuit (V) 600
Over load protection Timer-latch
Over voltage protection Latch (VCC)
Package SOP-16(N)

Documentation Tools

Design tools LLC board design tool
Selection Guide Power Supply Control IC Selection Guide

Appearance

SOP-16(N)

Block diagram

Circuit diagram

Outline drawing

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