Current Resonant ICs

FA6B19N

  • Status:Available

FA6B19N 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. It also incorporates a startup element with an absolute maximum input voltage of 600 V, thereby contributing to circuit miniaturization and low power consumption. Combined with our FA1A60N critical mode control IC, FA6B19N can control the operation mode (continuous, intermittent, or stop) of PFC circuits, improve power supply efficiency, optimize PFC operation, and reduce the number of components.

Features

  • Built-in start-up circuit enables power supply circuit miniaturization and low power consumption
  • Selectable between normal operation mode and low standby mode
  • Mode switching selectable between “automatic switching” and “external switching”
  • Reduces standby power consumption via burst operation in low standby mode
  • Reduces IC current consumption with a VCC quiescent current of 0.80 mA during stoppage
  • Built-in 600 V high-side and low-side drive circuits that can directly connect power MOSFETs, operating at 50% duty
  • Prevents off-resonance and hard-switching by automatically setting dead time inside the IC
  • Built-in protection against overcurrent (IS pin), overload (CA pin, FB pin), overvoltage (VCC pin), and overheating via MODE pin
  • Built-in fixed-level brown-in/out function (VH pin)
  • Enables condition settings such as overcurrent protection (IS pin detection) delay time setting, operation setting in standby mode, mode switching power setting during automatic switching
  • Built-in low-voltage malfunction prevention function (VCC pin, VB pin)
  • 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 29
Built-in start up circuit (V) 600
Over load protection Auto-Recovery
Over voltage protection Auto-Recovery (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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