Power & Power Management

Overview

Description

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 output capacitor by 180 degrees phase shift. Soft-star, the feedback loop short detection, two mode over-voltage-protection, over-current-protection, Over current ON/OFF timer protection for boost Diode short and slave ZCD open detection are built in the R2A20112A, and can constitute a power supply system of high reliability with few external parts.

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: Static OVP corresponding to over-voltage in stable. PFC output Dynamic-under-voltage-protection (DUVP) Feedback loop open/short detection Master and Slave independence over-current-protection 280 μs restart timer Slave ZCD signal open detection Over current ON/OFF timer protection for boost Diode short
  • Package Pb-free SOP-16

Applications

Documentation

Title Type Date
PDF265 KB日本語
Datasheet
PDF1.21 MB
Application Note
PDF1.30 MB
Application Note
PDF224 KB
Application Note
PDF1.11 MB日本語
Application Note
PDF509 KB
Application Note
PDF397 KB
Application Note
PDF4.86 MB日本語
Product Change Notice
PDF3.74 MB日本語
Product Change Notice
PDF1.46 MB日本語
Product Change Notice
PDF407 KB日本語
Technical Update
PDF73 KB日本語
Technical Update

Design & Development

Models