Datasheet

ManualsBrandsST ManualsIntegrated Circuits (ICs)PFC IC, SO-8, Tube, 650mW, 50uA

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L6561

June 2004

1 FEATURES

■ VERY PRECISE ADJUSTABLE OUTPUT

OVERVOLTAGE PROTECTION

■ MICRO POWER START-UP CURRENT (50µA

TYP.)

■ VERY LOW OPERATING SUPPLY

CURRENT(4mA TYP.)

■ INTERNAL START-UP TIMER

■ CURRENT SENSE FILTER ON CHIP

■ DISABLE FUNCTION

■ 1% PRECISION (@ T

= 25°C) INTERNAL

REFERENCE VOLTAGE

■ TRANSITION MODE OPERATION

■ TOTEM POLE OUTPUT CURRENT: ±400mA

■ DIP-8/SO-8 PACKAGES

2 DESCRIPTION

L6561 is the improved version of the L6560 stan-

dard Power Factor Corrector. Fully compatible

with the standard version, it has a superior perfor-

mant multiplier making the device capable of work-

ing in wide input voltage range applications (from

85V to 265V) with an excellent THD. Furthermore

the start up current has been reduced at few tens

of mA and a disable function has been implement-

ed on the ZCD pin, guaranteeing lower current

consumption in stand by mode.

Realised in mixed BCD technology, the chip gives

the following benefits:

– micro power start up current

– 1% precision internal reference voltage

– (Tj = 25°C)

– Soft Output Over Voltage Protection

– no need for external low pass filter on the cur-

rent sense

– very low operating quiescent current minimis-

es power dissipation

The totem pole output stage is capable of driving

a Power MOS or IGBT with source and sink cur-

rents of ±400mA. The device is operating in tran-

sition mode and it is optimised for Electronic Lamp

Ballast application, AC-DC adaptors and SMPS.

POWER FACTOR CORRECTOR

Figure 2. Block Diagram

MULTIPLIER

REF2

OVER-VOLTAGE

DETECTION

VOLTAGE

REGULATOR

UVLO

INTERNAL

SUPPLY 7V

2.5V

DRIVER

STARTER

ZERO CURRENT

DETECTOR

DISABLE

2.1V

1.6V

23 4

ZCD

INV

COMP MULT CS

GND

D97IN547E

20V

40K

5pF

REV. 16

gure 1.

ages

Table 1. Order Codes

Part Number Package

L6561 DIP-8

L6561D SO-8

L6561D013TR Tape & Reel

DIP-8

SO-8

Summary of content (13 pages)

PAGE 1
L6561 POWER FACTOR CORRECTOR 1 ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ 2 FEATURES Figure 1. Packages VERY PRECISE ADJUSTABLE OUTPUT OVERVOLTAGE PROTECTION MICRO POWER START-UP CURRENT (50µA TYP.) VERY LOW OPERATING SUPPLY CURRENT(4mA TYP.) INTERNAL START-UP TIMER CURRENT SENSE FILTER ON CHIP DISABLE FUNCTION 1% PRECISION (@ Tj = 25°C) INTERNAL REFERENCE VOLTAGE TRANSITION MODE OPERATION TOTEM POLE OUTPUT CURRENT: ±400mA DIP-8/SO-8 PACKAGES SO-8 DIP-8 Table 1.
PAGE 2
L6561 Table 2. Absolute Maximum Ratings Symbol Pin IVcc 8 Iq + IZ; (IGD = 0) Output Totem Pole Peak Current (2µs) IGD 7 INV, COMP MULT 1, 2, 3 CS ZCD Parameter Value Unit 30 mA ±700 mA Analog Inputs & Outputs -0.3 to 7 V 4 Current Sense Input -0.3 to 7 V 5 Zero Current Detector 50 (source) -10 (sink) mA mA 1 0.
PAGE 3
L6561 Table 5. Electrical Characteristics (VCC = 14.5V; Tamb = -25°C to 125°C;unless otherwise specified) Symbol Pin Parameter Test Condition Min. Typ. Max. Unit 18 V SUPPLY VOLTAGE SECTION VCC 8 Operating Range after turn-on 11 VCC ON 8 Turn-on Threshold 11 12 13 V VCC OFF 8 Turn-off Threshold 8.7 9.5 10.3 V Hys 8 Hysteresis 2.2 2.5 2.8 V 20 50 90 µA 2.6 4 mA 4 5.
PAGE 4
L6561 Table 5. Electrical Characteristics (continued) (VCC = 14.5V; Tamb = -25°C to 125°C;unless otherwise specified) Symbol Pin Parameter Test Condition VZCD 5 Lower Clamp Voltage IZCD = -3mA IZCD 5 Sink Bias Current 1V ≤ VZCD ≤ 4.5V IZCD 5 Source Current Capability IZCD 5 Sink Current Capability VDIS 5 Disable threshold IZCD 5 Restart Current After Disable Min. Typ. Max. 0.3 0.
PAGE 5
L6561 dently from the average output voltage. The precision in setting the overvoltage threshold is 7% of the overvoltage value (for instance ∆V = 60V ± 4.2V). 3.1 Disable function The zero current detector (ZCD) pin can be used for device disabling as well. By grounding the ZCD voltage the device is disabled reducing the supply current consumption at 1.4mA typical (@ 14.5V supply voltage). Releasing the ZCD pin the internal start-up timer will restart the device. Figure 4.
PAGE 6
L6561 Figure 6. Typical Application Circuit (80W, 110VAC) D1 BYT03-400 R3 (*) D3 1N4150 240K BRIDGE + 4 x 1N4007 FUSE 4A/250V R2 100 D2 1N5248B C1 1µF 250V T C6 R7 (*) 950K 10nF C3 680nF 5 8 3 Vac (85V to 135V) R10 10K NTC 2 1 7 L6561 - C2 22µF 25V Vo=240V Po=80W 68K R1 R9 (*) 950K + R5 MOS STP7NA40 10 4 6 C7 10nF R6 (*) 0.31 1W R8 10K 1% C5 100µF 315V - D97IN549B (*) R3 = 2 x 120KΩ R6 = 0.
PAGE 7
L6561 Figure 9. Demo Board (EVAL6561-80) Electrical Schematic NTC 2.5 D1 STTH1L06 R4 180 k R5 180 k T D8 1N4150 C5 12 nF 100 BRIDGE FUSE 4A/250V W04M + C1 1 µF 400V 1N5248B R6 68 k R12 750 k C3 470 nF C23 1 µF R2 750 k 5 8 2 1 L6561 3 - Vac (85V to 265V) R50 12 k D2 R1 750 k Vo=400V Po=80W R11 750 k R14 R7 33 C6 47 µF MOS STP8NM50 7 450V 4 6 R3 10 k C2 10nF C29 22 µF 25V C4 100 nF R16 91 k D3 1N4148 C7 10 µF 35 V R15 220 R9 0.41 R10 0.41 1W 1W R13 9.
PAGE 8
L6561 Figure 13. Supply Current vs. Supply Voltage Figure 11. OVP Current Threshold vs. Temperature D94IN047A D97IN548A ICC (mA) IOVP (µA) 10 41 5 1 0.5 40 0.1 0.05 39 CL = 1nF f = 70KHz TA = 25˚C 0.01 0.005 0 38 -50 -25 0 25 50 75 100 125 T (˚C) Figure 12. Undervoltage Lockout Threshold vs. Temperature VCC-ON (V) D94IN044A 0 5 10 15 20 VCC(V) Figure 14. Voltage Feedback Input Threshold vs. Temperature VREF (V) D94IN048A 13 2.50 12 11 VCC-OFF (V) 10 2.
PAGE 9
L6561 Figure 15. Output Saturation Voltage vs. Sink Current VPIN7 (V) D94IN046 Figure 17. Multiplier Characteristics Family VCS(pin4) (V) upper voltage D97IN555A VCOMP(pin2) (V) clamp VCC = 14.5V SINK 2.0 1.6 3.5 5.0 4.5 1.4 1.2 4.0 1.5 3.2 1.0 0.8 1.0 3.0 0.6 0.5 0.4 2.8 0.2 2.6 0 0 100 200 300 400 IGD (mA) 0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 VMULT(pin3) (V) Figure 16. Output Saturation Voltage vs. Source Current VPIN7 (V) D94IN053 VCC = 14.5V VCC -0.5 VCC -1.0 VCC -1.
PAGE 10
L6561 Figure 18. DIP-8 Mechanical Data & Package Dimensions mm inch DIM. MIN. A TYP. MIN. 3.32 TYP. MAX. 0.51 B 1.15 1.65 0.045 0.065 b 0.356 0.55 0.014 0.022 b1 0.204 0.304 0.008 0.012 E 0.020 10.92 7.95 9.75 0.430 0.313 0.384 e 2.54 0.100 e3 7.62 0.300 e4 7.62 0.300 F 6.6 0.260 I 5.08 0.200 L Z 3.18 OUTLINE AND MECHANICAL DATA 0.131 a1 D 10/13 MAX. 3.81 1.52 0.125 0.150 0.
PAGE 11
L6561 Figure 19. SO-8 Mechanical Data & Package Dimensions mm inch DIM. MIN. TYP. MAX. MIN. TYP. MAX. A 1.35 1.75 0.053 0.069 A1 0.10 0.25 0.004 0.010 A2 1.10 1.65 0.043 0.065 B 0.33 0.51 0.013 0.020 C 0.19 0.25 0.007 0.010 D (1) 4.80 5.00 0.189 0.197 E 3.80 4.00 0.15 0.157 e 1.27 0.050 H 5.80 6.20 0.228 0.244 h 0.25 0.50 0.010 0.020 L 0.40 1.27 0.016 0.050 k ddd OUTLINE AND MECHANICAL DATA 0˚ (min.), 8˚ (max.) 0.10 0.
PAGE 12
L6561 Table 7. Revision History Date Revision January 2004 15 First Issue June 2004 16 Modified the Style-look in compliance with the “Corporate Technical Publications Design Guide”. Changed input of the power amplifier connected to Multiplier (Fig. 2).
PAGE 13
L6561 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice.