R2A20112A Datasheet

R2A20112A Critical Conduction Mode Interleaved PFC Controller

The R2A20112A controls a boost converter to provide an active power factor correction. The R2A20112A adopts critical conduction mode for power factor correction and realizes high efficiency and a low switching noise by zero current switching. Interleaving function improves ripple current on input or.

Features

• Absolute Maximum Ratings ⎯ Supply voltage Vcc: 24 V ⎯ Junction temperature Tj:
  –40 to +150°C
• Electrical Characteristics ⎯ VREF output voltage Vref: 5.0 V ± 1.5% ⎯ UVLO operation start voltage Vuvlh: 10.5 V ± 0.7 V ⎯ UVLO operation shutdown voltage Vuvll: 9.3 V ± 0.5 V ⎯ UVLO hysteresis voltage Hysuvl: 1.2 V ± 0.5 V
• Functions ⎯ Boost converter control with critical conduction mode ⎯ Interleaving control ⎯ Soft start function for the reference voltage of Error Amp ⎯ Two mode PFC output Over-voltage-protection Mode1: Dynamic OVP corresponding to a voltage rise by dynamic load change. Mode2:.