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R2A20118ASP Datasheet

Critical Conduction Mode Interleaved PFC Control IC

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Preliminary Datasheet
R2A20118ASP
R03DS0002EJ0100
Critical Conduction Mode Interleaved PFC Control IC
Rev.1.00
Jul 14, 2010
Description
The R2A20118A controls a boost converter to provide an active power factor correction.
The R2A20118A is based on R2A20117, and additional functions are OVP2 and Brownout.
The R2A20118A 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.
The feedback loop short detection, two modes overvoltage protection and OVP2, overcurrent protection, overcurrent
timer latch protection, and ZCD open detection are built in the R2A20118A, 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
Brownout function
Two mode overvoltage protection and OVP2
Mode1: Dynamic OVP corresponding to a voltage rise by dynamic load change
Mode2: Static OVP corresponding to overvoltage in stable.
OVP2: OVP2 sense the PFC output voltage by independenced pin.
Feedback loop short detection
Slave ZCD signal open detection
RAMP charge current selectable function
Master and Slave independenced overcurrent protection
Overcurrent timer latch protection at abnormal operation
280 s restart timer
Soft start function for the reference voltage of Error Amp
Package: Pb-free SOP-20
Ordering Information
Part No.
Package Name
R2A20118ASPW0 FP-20DAV
Package Code
PRSP0020DD-B
Package
Abbreviation
SP
Taping Abbreviation (Quantity)
W (2,000 pcs/reel)
R03DS0002EJ0100 Rev.1.00
Jul 14, 2010
www.DataSheet.in
Page 1 of 9


Renesas Electronics Components Datasheet

R2A20118ASP Datasheet

Critical Conduction Mode Interleaved PFC Control IC

No Preview Available !

R2A20118ASP
Pin Arrangement
ZCD-M
ZCD-S
BO
VREF
SS
NC
RT
RAMP
RAMP-GAIN
COMP
1 20
2 19
3 18
4 17
5 16
6 15
7 14
8 13
9 12
10 11
(Top view)
VCC
GD-M
GND
GD-S
OCP-M
OCP-S
NC
TL
OVP2
FB
Preliminary
Pin Functions
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Pin Name
ZCD-M
ZCD-S
BO
VREF
SS
NC
RT
RAMP
RAMP-GAIN
COMP
FB
OVP2
TL
NC
OCP-S
OCP-M
GD-S
GND
GD-M
VCC
Input/Output
Input
Input
Input
Output
Output
Input/Output
Input/Output
Input
Output
Input
Input
Output
Input
Input
Output
Output
Input
Function
Master converter zero current detection input terminal
Slave converter zero current detection input terminal
Brownout input terminal
Reference voltage output terminal
Soft start time setting terminal
Open terminal
Oscillator frequency setting terminal
Ramp waveform setting terminal
RAMP charge current selection terminal
Error amplifier output terminal
Error amplifier input terminal
Over voltage detection terminal
Timer latch time setting terminal
Open terminal
Slave converter overcurrent detection terminal
Master converter overcurrent detection terminal
Slave converter Power MOSFET drive terminal
Ground
Master converter Power MOSFET drive terminal
Supply voltage terminal
R03DS0002EJ0100 Rev.1.00
Jul 14, 2010
www.DataSheet.in
Page 2 of 9


Part Number R2A20118ASP
Description Critical Conduction Mode Interleaved PFC Control IC
Maker Renesas Technology
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