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R2A20112SP

Critical Conduction Mode Interleaved PFC Control IC

Renesas Electronics 

Data Sheet

R2A20112SP/DD

R19DS0079EJ0400

Critical Conduction Mode Interleaved PFC Control IC

Rev.4.00

Dec 13, 2014

Description

The R2A20112 controls a boost converter to provide an active power factor correction.

The R2A20112 adopts critical conduction mode for power factor correction and realizes high efficiency and a low

switching noise by zero current switching.

Interleaving function improve ripple current on input or output capacitor by 180 degrees phase shift.

The feedback loop open detection, two mode overvoltage protection, overcurrent protection are built in the R2A20112,

and can constitute a power supply system of high reliability with few external parts.

Features

• Maximum Ratings

⎯ Supply voltage Vcc: 24 V

⎯ Operating junction temperature Tjopr: –40 to +150°C

• Electrical characteristics

⎯ VREF output voltage VREF: 5.0 V ± 3%

⎯ UVLO operation start voltage VH: 10.5 V ± 0.7 V

⎯ UVLO operation shutdown voltage VL: 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

⎯ Two mode overvoltage protection

Mode1: Dynamic OVP corresponding to a voltage rise by load change

Mode2: Static OVP corresponding to overvoltage in stable

⎯ Feedback loop open detection

⎯ Master and Slave independence overcurrent protection

⎯ 280 μs restart timer

⎯ Package lineup: Pb-free SOP-16/DILP-16*

Note: * Not recommend for new design.

Ordering Information

Part No.

Package Name

R2A20112SPW0

FP-16DAV

R2A20112DDU0 *

DP-16FV

Note: * Not recommend for new design.

Package Code

PRSP0016DH-B

PRDP0016AE-B

Taping Spec.

2000 pcs./one taping product

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R19DS0079EJ0400 Rev.4.00

Dec 13, 2014

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