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PDF R2A20113ASP Data sheet ( Hoja de datos )

Número de pieza R2A20113ASP
Descripción Critical Conduction Mode PFC Control IC
Fabricantes Renesas 
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Preliminary Datasheet
R2A20113ASP
Critical Conduction Mode PFC Control IC
R03DS0026EJ0400
Rev.4.00
Nov 27, 2012
Description
The R2A20113A controls a boost converter to provide an active power factor correction.
The R2A20113A adopts critical conduction mode for power factor correction and realizes high efficiency and a low
switching noise by zero current switching.
Because the zero current is detected by using the GND current, the ZCD Auxiliary winding is unnecessary.
The feedback loop open detection, two mode overvoltage protection, overcurrent protection are built in the R2A20113A,
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
UVLO operation start voltage VH: 12 V 0.8 V
UVLO operation shutdown voltage VL: 9.2 V 0.7 V
UVLO hysteresis voltage Hysuvl: 2.8 V 0.7 V
Functions
Boost converter control with critical conduction mode
Two mode overvoltage protection
Mode 1: Dynamic OVP corresponding to a voltage rise by load change
Mode 2: Static OVP corresponding to overvoltage in stable.
Feedback loop open detection
Overcurrent protection
Dynamic UVP corresponding to a voltage fall by load change
Off Time Control function (Frequency Limitter)
Package lineup: Pb-free SOP-8 (JEDEC)
Ordering Information
Part No.
R2A20113ASP#W5
Package Name
Package Code
PRSP0008DJ-A
Package
Abbreviation
SP
Taping Abbreviation
(Quantity)
W (2,500 pcs/reel)
R03DS0026EJ0400 Rev.4.00
Nov 27, 2012
Page 1 of 12

1 page




R2A20113ASP pdf
R2A20113ASP
Preliminary
Electrical Characteristics
(Ta = 25°C, VCC = 12 V, CS = 0.1 V, FB = COMP, RRT = 200 k)
Item
Symbol
Min Typ Max Unit
Test Conditions
Supply
UVLO turn-on threshold
Vuvlh
11.2 12 12.8
V
UVLO turn-off threshold
Vuvll
8.5 9.2 9.9
V
UVLO hysteresis
Hysuvl
2.1 2.8 3.5
V
Standby current
Istby
— 130 250
A VCC = Vuvlh – 0.2 V
Operating current Icc — 1.8 2.6 mA
VREF
Reference voltage
Vref
4.945 5.020 5.095
V Isource = 0 mA
Line regulation
Vref-line
— 5 20 mV Isource = 0 mA
Vcc = 10 V to 24 V
Load regulation
Temperature stability
Vref-load
dVref
— 5 20 mV Isource = 0 mA to –5 mA
80 — ppm/°C Ta = –40 to +125°C *1
OVP-VREF threshold voltage
ovp-vref
Vref+
0.2
Vref+
0.4
Vref+
0.6
V
Error
amplifier
Feedback voltage
Input bias current
Open loop gain
Vfb
2.472 2.510 2.548
V FB-COMP short
Ifb
–0.40 –0.15 –0.05
A Measured pin: FB
Av
— 65 —
dB *1
Upper clamp voltage
Vclamp-comp
3.65 4.10
4.3
V FB = 2.0 V
COMP: Open
Low voltage
Vl-comp
— 0.1 0.3
V FB = 3.0 V
COMP: Open
Source current
Isrc-comp
–13.5 –10
–6
A FB = 1 V
COMP = 2.5 V
Sink current
Isnk-comp
6
10 13.5
A FB = 3.5 V
COMP = 2.5 V
Transconductance
gm
25 46 75
s FB = 2.45V 2.55 V
RT RAMP offset voltage
RAMP amplitude
Voff_ramp
dVramp
— 1.0
2.90 3.1
3.3
COMP = 2.5 V
V *1
V *2
RT voltage
V-rt
1.9 2.0 2.1
V
Zero
current
detector
ZCD threshold voltage
Input bias current
Vzcd
Ics
–4 0
4
–58 –42 –25
mV
A Vcs = 0 V
Restart
Restart time delay
Tstart
75 150 330
s FB = 2.0 V, COMP = 2.5 V
Off time
control
Minimum off time
Toff-min
1.0 1.4 1.8
s
Notes: *1 Design spec
*2 dVramp = Vclamp_comp – Voff_ramp
R03DS0026EJ0400 Rev.4.00
Nov 27, 2012
Page 5 of 12

5 Page





R2A20113ASP arduino
R2A20113ASP
System Diagram
L1
D1
1.0μ
VREF
4
0.1μ
Q1
From OUT
0.05
(5W)
220μ +
(450V)
CS
5
100
1000p
Preliminary
PFC OUT
(390V dc)
6M
VRB1
GND
AUX
VCC
8
1μ
OUT
7
GND
6
To
Q1 gate
RT
3
200k
R2A20113A
FB
1
COMP
2
0.022μ
200k
0.047μ
R03DS0026EJ0400 Rev.4.00
Nov 27, 2012
Page 11 of 12

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