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Renesas Electronics Components Datasheet

2A20112 Datasheet

Critical Conduction Mode Interleaved PFC Controller

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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
R19DS0079EJ0400 Rev.4.00
Dec 13, 2014
Page 1 of 7


Renesas Electronics Components Datasheet

2A20112 Datasheet

Critical Conduction Mode Interleaved PFC Controller

No Preview Available !

R2A20112SP/DD
Pin Arrangement
ZCD-M 1
ZCD-S 2
NC 3
VREF 4
SGND 5
RT 6
RAMP 7
COMP 8
(Top view)
16 VCC
15 GD-M
14 PGND
13 GD-S
12 NC
11 OCP-M
10 OCP-S
9 FB
Pin Functions
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pin Name
ZCD-M
ZCD-S
N.C.
VREF
SGND
RT
RAMP
COMP
FB
OCP-S
OCP-M
N.C.
GD-S
PGND
GD-M
VCC
Input/Output
Input
Input
Output
Input/Output
Input/Output
Output
Input
Input
Input
Output
Output
Input
Function
Master converter zero current detection input terminal
Slave converter zero current detection input terminal
Open
Reference voltage output terminal
Ground for small signal circuit
Oscillator frequency setting terminal
Ramp waveform setting terminal
Error amplifier output terminal
Error amplifier input terminal
Slave converter overcurrent detection terminal
Master converter overcurrent detection terminal
Open
Slave converter Power MOSFET drive terminal
Ground for power stage
Master converter Power MOSFET drive terminal
Supply voltage terminal
R19DS0079EJ0400 Rev.4.00
Dec 13, 2014
Page 2 of 7


Part Number 2A20112
Description Critical Conduction Mode Interleaved PFC Controller
Maker Renesas
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2A20112 Datasheet PDF






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