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R2A20113DD/SP
Critical Conduction Mode PFC Control IC
REJ03F0279-0100 Rev.1.00 Oct 10, 2008
Description
The R2A20113 controls a boost converter to provide a active power factor correction. The R2A20113 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 R2A20113, 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 +150C * 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 Mode1: Dynamic OVP corresponding to a voltage rise by load change Mode2: Static OVP corresponding to overvoltage in stable Feedback loop open detection Overcurrent protection Package lineup: Pb-free SOP-8 (JEDEC)/DILP-8
REJ03F0279-0100 Rev.1.00 Oct 10, 2008 Page 1 of 6
R2A20113DD/SP
Pin Arrangement
FB COMP RT VREF 1 2 3 4 8 7 6 5 VCC OUT GND CS
(Top view)
Pin Functions
Pin No. 1 2 3 4 5 6 7 8 Pin Name FB COMP RT VREF CS GND OUT VCC Input/Output Input Output Input/Output Output Input -- Output Input Function Error amplifier input terminal Error amplifier output terminal A resistor connection terminal for RAMP current setting Reference voltage output terminal Zero current detection and overcurrent detection input terminal Ground Power MOSFET drive terminal Supply voltage terminal
REJ03F0279-0100 Rev.1.00 Oct 10, 2008 Page 2 of 6
R2A20113DD/SP
Block Diagram
VREF 4
VREF: 5V
UVLO ON: 12V OFF: 9.2V
8 VCC
27.5V
Zero Current Detector
SQ RQ
Delay
7 OUT
Restart
SQ RQ
GD Disable
40k
CS 5
5p
OCP COMP - +
6 GND
-0.4V
OVP BLOCK
COMP Discharge
- +
FB
RT 3
1V 10p
Ramp Low Detect - + 0.2V
SQ R
Error Amp - + 2.51V
1 FB
2 COMP
4.0V
Static OVP
+
FB
VFB x 1.09V/100mVhys
GD Disable
-
COMP Discharge
Dynamic OVP
+
-
VFB x 1.05V
-
+
FB open detect
0.5V/0.2Vhys
OVP BLOCK
REJ03F0279-0100 Rev.1.00 Oct 10, 2008 Page 3 of 6
R2A20113DD/SP
Absolute Maximum Ratings
(Ta = 25C)
Item Supply voltage OUT peak current OUT DC current COMP terminal current RT terminal current Vref terminal current Vref terminal voltage FB terminal voltage CS terminal voltage Power dissipation Operating junction temperature Storage temperature Notes: 1. 2. 3. 4. Symbol Vcc Ipk-out Idc-out Icomp Irt Iref Vt-ref Vt-fb Vcs Pt Tj-opr Tstg Ratings -0.3 to 24 0.9 100 1 -50 -5 -0.3 to Vref + 0.3 -0.3 to +5 -1.5 to +0.3 0.68 -40 to +150 -55 to +150 Unit V A mA mA A mA V V V W C C Note 3
4
Rated voltages are with reference to the GND terminal. For rated currents, inflow to the IC is indicated by (+), and outflow by (-). Shows the transient current when driving a capacitive load. In case of R2A20113DD (DILP): ja = 120C/W In case of R2A20113SP (SOP): ja = 120C/W This value is a thing mounting on 40 x 40 x 1.6 [mm], a glass epoxy board of wiring density 10%.
REJ03F0279-0100 Rev.1.00 Oct 10, 2008 Page 4 of 6
R2A20113DD/SP
Electrical Characteristics
(Ta = 25C, Vcc = 12 V, CS = GND, FB = COMP, RRT = 200 k)
Item Supply UVLO turn-on threshold UVLO turn-off threshold UVLO hysteresis Standby current Operating current VREF Reference voltage Line regulation Load regulation Temperature stability Error amplifier Feedback voltage Input bias current Open loop gain Upper clamp voltage Low voltage Source current Sink current 1 Sink current 2 Transconductance RT Zero current detector Restart OUT RAMP offset voltage RT voltage ZCD threshold voltage Input bias current Restart time delay Rise time Fall time OUT low voltage OUT high voltage Over current protection Over voltage protection Dynamic OVP threshold voltage Static OVP threshold voltage Static OVP hysteresis FB open detect threshold voltage FB open detect hysteresis Vdovp Vsovp Hys-sovp Vfbopen Hysfbopen VFBx 1.035 VFBx 1.075 50 0.45 0.16 VFBx 1.050 VFBx 1.090 100 0.50 0.20 VFBx 1.065 VFBx 1.105 150 0.55 0.24 V V mV V V COMP = Open COMP = Open COMP = Open COMP = Open OCP threshold voltage Symbol Vuvlh Vuvll Hysuvl Istby Icc Vref Vref-line Vref-load dVref Vfb Ifb Av Vclamp-comp Vl-comp Isrc-comp Isnkcomp1 Isnkcomp2 gm Voff-ramp V-rt Vzcd Ics Tstart tr-out tf-out Vol1-out Vol2-out Voh-out Vocp Min 11.2 8.5 2.1 -- -- 4.85 -- -- -- 2.41 0.1 -- 3.75 -- -185 -- 180 90 -- 1.8 -8 -80 65 -- -- -- -- 11.5 -0.44 Typ 12 9.2 2.8 95 2.6 5.00 5 5 80 2.51 0.25 55 4.0 0.1 -120 120 300 150 1.0 2.0 -2 -47 130 30 30 0.08 0.05 11.9 -0.4 Max 12.8 9.9 3.5 180 4 5.15 20 20 -- 2.61 0.75 -- 4.25 0.3 -40 -- 450 220 -- 2.2 0 -20 280 100 100 0.2 0.7 -- -0.36 Unit V V V A mA V mV mV ppm/C V A dB V V A A A S V V mV A s ns ns V V V V Vcs = 0 V FB = 2.0 V, COMP = 2.5 V CL = 1000 pF, FB = 2.0 V, COMP = 2.5 V CL = 1000 pF, FB = 2.0 V, COMP = 2.5 V Isink = 20 mA Isink = 10 mA, Vcc = 5 V Isource = -20 mA *
1
Test Conditions
Vcc = Vuvlh - 0.2 V Isource = 0 mA Isource = 0 mA, Vcc = 10 V to 24 V Isource = 0 mA to -5 mA Ta = -40 to 125C * FB-COMP short Measured pin: FB *1 FB = 2.0 V, COMP: Open FB = 3.0 V, COMP: Open FB = 1 V, COMP = 2.5 V *1 FB = 3.5 V, COMP = 2.5 V FB = 2.5 V, COMP = 2.5 V *1 RT = 200 k
1
Note:
1. Design spec.
REJ03F0279-0100 Rev.1.00 Oct 10, 2008 Page 5 of 6
R2A20113DD/SP
Package Dimensions
JEITA Package Code P-DIP8-6.3x9.6-2.54 RENESAS Code PRDP0008AF-A Previous Code DP-8B MASS[Typ.] 0.51g
D
8
5
1 0.89 b3
4
Z
A1
A
E
Reference Symbol
Dimension in Millimeters
Min
e
bp
e1
c
e1 D E A A1 bp b3 c e Z L
Nom Max 7.62 9.6 10.6 6.3 7.4 5.06
L
0.5 0.38 0.48 0.58 1.3 0.20 0.25 0.35 0 15 2.29 2.54 2.79 1.27 2.54
JEITA Package Code P-SOP8-3.95x4.9-1.27
RENESAS Code PRSP0008DD-C
Previous Code FP-8DCV
MASS[Typ.] 0.085g
*1
D
F
8
5
NOTE) 1. DIMENSIONS"*1 (Nom)"AND"*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION"*3"DOES NOT INCLUDE TRIM OFFSET.
bp
E
*2
HE
Index mark
Terminal cross section ( Ni/Pd/Au plating )
1
Z
e
c
4
*3
Reference Dimension in Millimeters Symbol
bp
x
M
L1
A1
L
y
Detail F
D E A2 A1 A bp b1 c c1 HE e x y Z L L1
Min Nom Max 4.90 5.30 3.95
0.10 0.14 0.25 1.75 0.34 0.40 0.46 0.15 0.20 0.25 0 8 5.80 6.10 6.20 1.27 0.25 0.10 0.75 0.40 0.60 1.27 1.08
REJ03F0279-0100 Rev.1.00 Oct 10, 2008 Page 6 of 6
A
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