L6560 STMICROELECTRONICS | Alldatasheet

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VERY PRECISE ADJUSTABLE INTERNAL OUTPUT OVERVOLTAGE PROTECTION HYSTERETIC START-UP (ISTART-UP < 0.5mA) VERY LOW QUIESCENT CURRENT (< 3.5mA) INTERNAL START-UP TIMER TRANSITION MODE OPERATING TOTEM POLE OUTPUT CURRENT: ±400mA DIP8/SO8 PACKAGES

DESCRIPTION

The L6560/A is a monolithic integrated circuit in Minidip and SO8 packages, designed as a con- troller and driver of a discrete power MOS transis- tor for the implementation of active power factor correction, for sinusoidal line current consump- tion. Realized in mixed BCD technology, the chip inte- grates: - An undervoltage lockout with micropowerstart- up and hysteresis. - An internal temperature compensated precise band gap reference. - A stable error amplifier. - One quadrant multiplier. - Current sense comparator. - An output overvoltage protection circuit. - A totem-pole output stage able to drive a POWER MOS or IGBT devices with source and sink current of 400mA. The chip works in transition mode and is particularly intended for lamp ballast applications and for low power SMPS. June 2000 BLOCK DIAGRAM ORDERING NUMBERS: L6560 L6560D L6560A L6560AD Minidip SO8 MULTIPOWER BCD TECHNOLOGY

Symbol Pin Parameter Value Unit IVcc 8I CC +IZ 30 mA IGD 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 5 (source) 10 (sink) mA mA Ptot Power Dissipation @Tamb =5 0°C (Minidip) (SO8) 0.65 W Tj Junction Temperature Operating Range -25 to 150 °C Tstg Storage Temperature -55 to 150 °C THERMAL DATA Symbol Parameter SO 8 MINIDIP Unit R th j-amb Thermal Resistance Junction-ambient 150 100 °C/W PIN FUNCTIONS N. Name Function 1 INV Inverting input of the error amplifier. A resistive divider is connected between output regulated voltage and this point, to provide the 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 multipler 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. 6 GND Ground of the control section. 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). CC Supply voltage of driver and control circuits. PIN CONNECTION L6560 - L6560A

ELECTRICAL CHARACTERISTICS (VCC = 14.5V; Tj=2 5°C unless otherwise specified) SUPPLY VOLTAGE SECTION Symbol Pin Parameter Test Condition Min. Typ. Max. Unit VCC 8 Operating Range after turn-on 11 18 V VCC ON 8 Turn-on Threshold L6560 L6560A 13.5 14.5 15.5 V v VCC OFF 8 Turn-off Threshold L6560 L6560A 8.7 9.6 10.5 V V Hys 8 Hysteresis L6560 L6560A 4.3 2.5 4.7 2.8 5.1 3.1 V V SUPPLY CURRENT SECTION Symbol Pin Parameter Test Condition Min. Typ. Max. Unit ISTART-U 8 Start-up Current before turn-on at: VCC = 13V (L6560) VCC = 10.5V (L6560A) 0.3 0.5 mA ICC 8 Operating Supply Current C L = 0nF @ 70KHz 2.5 3.5 mA C L = 1nF @ 70KHz 3.2 4 mA in OVP condition Vpin1= 2.7V 0.9 1.3 mA V Z 8 Zener Voltage I CC = 25mA 18 20 22 V ERROR AMPLIFIER SECTION Symbol Pin Parameter Test Condition Min. Typ. Max. Unit VINV 1 Voltage Feedback Input Threshold 2.46 2.5 2.54 V –25≤ TJ ≤ 85°C; 12V < VCC < 18V 2.43 2.56 TS Temperature Stability T amb = -25 to 85°C 0.5 % R L Line Regulation V CC = 11 to 18V 1 4 mV IINV 1 Input Bias Current 0.1 1 µA G V Voltage Gain Open loop 60 80 dB ICOMP 2 Source Current (V1 <V ref)V COMP = 5V 0.14 0.2 mA Sink Current (V 1 >V ref) 0.5 1 mA MULTIPLIER SECTION Symbol Pin Parameter Test Condition Min. Typ. Max. Unit VMULT 3 Operating Voltage 0 to 2.5 0 to 4.2 V Δ VCS Δ Vmult Output Max. Slope V MULT = from 0V to 1V VCOMP =6 V 0.9 1.25 1.6 K Gain V MULT =1 V V COMP = 5V 0.45 0.65 0.85 1/V CURRENT SENSE COMPARATOR Symbol Pin Parameter Test Condition Min. Typ. Max. Unit VCS 4 Voltage Threshold V MULT = 2.5V VCOMP = 6V 1.6 1.9 V ICS 4 Input Bias Current 5 µA td (H-L) 4 Delay to Output 200 400 ns L6560 - L6560A

OVER VOLTAGE PROTECTION OVP The output voltage is expected to be kept by the operation of the PFC circuits close to its reference value that is set by the ratio of the two external re- sistors R1 and R2 (see fig. 2), taking into consid- eration that the non inverting input of the error amplifier is biased inside the L6560 at 2.5V. In steady state conditions, the current through R1 and R2 is: ISC = Δ Voutsc− 2.5 or ISC = 2.5 and, if the external compensation network is made only with a capacitor C, the current through C is equal zero. When the output voltage increases abruptly the current through R1 becomes: IR1 = Vout− 2.5 IR1 = Voutsc+Δ VOUT − 2.5 R1 = Isc +Δ I. Since the current through R2 doesn’t change, the ΔI current must flow through the capacitor C and enter in the error amplifier. This current is mirrored inside the L6560, and compared with a precise internal reference of 40µA. Whenever such 40µA limit is exceed, the OVP protection is triggered (Dynamic OVP), and the external power transistor is switched off, until the overvoltage situation disappears. However if the overvoltage persists, before that the transient condition of dynamic circuit exhausts, an internal comparator (Static OVP) latches the OVP condi- tion keeping the external power switch turned off (see fig. 1). The OVP value is threfore set by the equation OVP = ΔVout = R 1 ⋅ 40µA. Typical values for R1,R 2 and C are reported in the application circuit. The overvoltage can be set independently from the average output voltage. The precision in setting the overvoltage threshold is 7% of the overvoltage value (for instanceΔV= 60V ± 4.2V). ELECTRICAL CHARACTERISTICS (continued) ZERO CURRENT DETECTOR Symbol Pin Parameter Test Condition Min. Typ. Max. Unit VZCD 5 Input Threshold Voltage Rising Edge 1.8 2.3 V Hysteresis 0.3 0.5 0.7 V VZCD 5 Clamp Voltage I ZCD = 3mA 5 5.7 6.4 V VZCD 5 Clamp Voltage I ZCD = –3mA 0.4 0.7 1 V OUTPUT SECTION Symbol Pin Parameter Test Condition Min. Typ. Max. Unit VGD 7 Dropout Voltage I GDsource = 200mA 1.2 2 V IGDsource = 20mA 0.7 1 V IGDsink = 200mA 1.5 V IGDsink = 20mA 0.3 V tr 7 Output Voltage Rise Time CL = 1nF 50 120 ns tf 7 Output Voltage Fall Time CL = 1nF 40 100 ns OUTPUT OVERVOLTAGE SECTION Symbol Pin Parameter Test Condition Min. Typ. Max. Unit IOVP 2 OVP Triggering Current 36 40 44 µA RESTART TIMER Symbol Pin Parameter Test Condition Min. Typ. Max. Unit tSTART Start Timer 45 60 µs L6560 - L6560A

DIM. mm inch A 3.32 0.131 a1 0.51 0.020 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 D 10.92 0.430 E 7.95 9.75 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 3.18 3.81 0.125 0.150 Z 1.52 0.060 OUTLINE AND MECHANICAL DATA L6560 - L6560A

DIM. mm inch A 1.75 0.069 a1 0.1 0.25 0.004 0.010 a2 1.65 0.065 a3 0.65 0.85 0.026 0.033 b 0.35 0.48 0.014 0.019 b1 0.19 0.25 0.007 0.010 C 0.25 0.5 0.010 0.020 c1 45 ° (typ.) D (1) 4.8 5.0 0.189 0.197 E 5.8 6.2 0.228 0.244 e 1.27 0.050 e3 3.81 0.150 F (1) 3.8 4.0 0.15 0.157 L 0.4 1.27 0.016 0.050 M 0.6 0.024 S8 ° (max.) (1) D and F do not include mold flash or protrusion s. Mold flash or potrusion s shall not exceed 0.15mm (.006inch) . SO8 OUTLINE AND MECHANICAL DATA L6560 - L6560A

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. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics  2000 STMicroelectronics – Printed in Italy – All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. http://www.st.com L6560 - L6560A