R2A20112ASP Datasheet, PDF (1/9 Pages) Renesas Technology Corp – Critical Conduction Mode Interleaved PFC Control IC

Preliminary Datasheet
R2A20112ASP
R03DS0047EJ0100
Critical Conduction Mode Interleaved PFC Control IC
Rev.1.00
Jul 21, 2011
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
 Operating junction temperature Tjopr: –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 s restart timer
 Slave ZCD signal open detection
 Over current ON/OFF timer protection for boost Diode short
 Package
 Pb-free SOP-16
Ordering Information
Part No.
R2A20112ASPW0
Package Name
FP-16DAV
Package Code
PRSP0016DH-B
Package
Abbreviation
SP
Taping Abbreviation
(Quantity)
W (2,000 pcs/reel)
R03DS0047EJ0100 Rev.1.00
Jul 21, 2011
Page 1 of 8