L6561D Datasheet L6561D, L6561D013TR, L6561 | P1-P3

1/13

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

L6561

2/13

Table 2. Absolute Maximum Ratings

Figure 3. Pin Connection (Top view)

Table 3. Thermal Data

Table 4. Pin Description

(1) Parameter guaranteed by design, not tested in production.

Symbol Pin Parameter Value Unit

Vcc

+ I

; (I

= 0) 30 mA

7 Output Totem Pole Peak Current (2µs) ±700 mA

INV, COMP

MULT

1, 2, 3 Analog Inputs & Outputs -0.3 to 7 V

CS 4 Current Sense Input -0.3 to 7 V

ZCD 5 Zero Current Detector 50 (source)

-10 (sink)

tot

Power Dissipation @T

amb

= 50 °C (DIP-8)

(SO-8)

0.65

Junction Temperature Operating Range -40 to 150 °C

stg

Storage Temperature -55 to 150 °C

Symbol Parameter SO 8 MINIDIP Unit

th j-amb

Thermal Resistance Junction to ambient 150 100 °C/W

N. Name Function

1 INV Inverting input of the error amplifier. A resistive divider is connected between the output

regulated voltage and this point, to provide voltage feedback.

2 COMP Output of error amplifier. A feedback compensation network is placed between this pin and the

INV pin.

3 MULT Input of the multiplier stage. A resistive divider connects to this pin the rectified mains. A voltage

signal, proportional to the rectified mains, appears on this pin.

4 CS Input to the comparator of the control loop. The current is sensed by a resistor and the resulting

voltage is applied to this pin.

5 ZCD Zero current detection input. If it is connected to GND, the device is disabled.

6 GND Current return for driver and control circuits.

7 GD Gate driver output. A push pull output stage is able to drive the Power MOS with peak current of

400mA (source and sink).

Supply voltage of driver and control circuits.

INV

COMP

MULT

4ZCD

GND

DIP8

3/13

L6561

Table 5. Electrical Characteristics

= 14.5V; T

amb

= -25°C to 125°C;unless otherwise specified)

Symbol Pin Parameter Test Condition Min. Typ. Max. Unit

SUPPLY VOLTAGE SECTION

8 Operating Range after turn-on 11 18 V

CC ON

8 Turn-on Threshold 11 12 13 V

CC OFF

8 Turn-off Threshold 8.7 9.5 10.3 V

Hys 8 Hysteresis 2.2 2.5 2.8 V

SUPPLY CURRENT SECTION

START-U

8 Start-up Current before turn-on (V

=11V) 205090µA

8 Quiescent Current 2.6 4 mA

8 Operating Supply Current C

= 1nF @ 70KHz 4 5.5 mA

in OVP condition V

pin1

= 2.7V 1.4 2.1 mA

Iq 8 Quiescent Current V

PIN5

≤150mV, V

> V

off

1.4 2.1 mA

PIN5

≤ 150mV, V

< V

CC off

20 50 90 µA

8 Zener Voltage I

= 25mA 18 20 22 V

ERROR AMPLIFIER SECTION

INV

1 Voltage Feedback Input

Threshold

amb

= 25°C 2.465 2.5 2.535 V

12V < V

< 18V 2.44 2.56 V

Line Regulation V

= 12 to 18V 2 5 mV

INV

1 Input Bias Current -0.1 -1 µA

Voltage Gain Open loop 60 80 dB

GB Gain Bandwidth 1 MHz

COMP

2 Source Current V

COMP

= 4V, V

INV

= 2.4V -2 -4 -8 mA

Sink Current V

COMP

= 4V, V

INV

= 2.6V 2.5 4.5 mA

COMP

2 Upper Clamp Voltage I

SOURCE

= 0.5mA 5.8 V

Lower Clamp Voltage I

Sink

= 0.5mA 2.25 V

MULTIPLIER SECTION

MULT

3 Linear Operating Voltage 0 to 3

0 to 3.5

Output Max. Slope V

MULT

= from 0V to 0.5V

COMP

= Upper Clamp Voltage

1.65 1.9

KGain V

MULT

= 1V V

COMP

= 4V 0.45 0.6 0.75 1/V

CURRENT SENSE COMPARATOR

4 Current Sense Reference

Clamp

MULT

= 2.5V

COMP

= Upper Clamp Voltage

1.6 1.7 1.8 V

4 Input Bias Current V

= 0 -0.05 -1 µA

d (H-L)

4 Delay to Output 200 450 ns

4 Current Sense Offset 0 15 mV

ZERO CURRENT DETECTOR

ZCD

5 Input Threshold Voltage Rising

Edge

(1) 2.1 V

Hysteresis (1) 0.3 0.5 0.7 V

ZCD

5 Upper Clamp Voltage I

ZCD

= 20µA4.55.15.9V

ZCD

5 Upper Clamp Voltage I

ZCD

= 3mA 4.7 5.2 6.1 V

∆

mult

∆

-----------------

P1-P3 P4-P6 P7-P9 P10-P12 P13-P13

L6561D

Mfr. #:

Buy L6561D

Manufacturer:

STMicroelectronics

Description:

Power Factor Correction - PFC Wide Input Voltage

Lifecycle:

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L6561D

L6561D

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