Data Sheet 28113† STR-S6707 THRU STR-S6709 OFF-LINE SWITCHING REGULATORS – WITH BIPOLAR SWITCHING TRANSISTOR COLLECTOR 1 COMMON 2 BASE 3 SINK 4 DRIVE 5 OVER-CURRENT PROTECTION 6 FDBK 7 INHIBIT 8 V IN 9 The STR-S6707, STR-S6708, and STR-S6709 are specifically designed to meet the requirement for increased integration and reliability in off-line quasi-resonant flyback converters. These devices incorporate the primary control and proportional drive circuit with a thirdgeneration high-voltage bipolar switching transistor. FAULT Crucial system parameters such as maximum ON time and OFF time are fixed during manufacture. Local control circuit decoupling and layout are optimized within each device. S DRIVE OSC. FAULT LATCH R + REF. + UVLO Dwg. PK-001 ABSOLUTE MAXIMUM RATINGS Supply Voltage, VIN ........................... 15 V Output Voltage, VCEX ....................... 850 V VEBO ................................................ 7 V Continuous Output Current, IC .......................................... See Table 1 ms Single-Pulse Output Current, ICM ........................................ See Table Sink Current, IS ......................... See Table Drive Current, ID .......................... -700 mA Feedback Current, IFDBK ................. 20 mA Inhibit Voltage, VINH ........................... 15 V Over-Current Protection Voltage Range, VOCP ............................................ ±3.5 V Insulation Voltage,VWM(RMS) ........... 2000 V Package Power Diss., PD ........ See Graph Output Junction Temperature, TJ .. +150°C Internal Frame Temperature, TF ... +125°C Operating Temperature Range, TA ............................... -20°C to +125°C Storage Temperature Range, Tstg ............................. -40°C to +125°C Cycle-by-cycle current limiting, under-voltage lock-out with hysteresis, over-voltage protection, and thermal shutdown protect these devices during all normal and overload conditions. Over-voltage protection and thermal shutdown are latched after a short delay. A versatile triple-level inhibit circuit includes the OFF time synchronization required to establish quasi-resonant operation. The inhibit function has also been expanded to initiate operation in stand-by mode in which the power supply delivers a small fraction of the steady-state output power. The dual requirements of dielectric isolation and low transient thermal impedance and steady-state thermal resistance are satisfied in an overmolded single-in-line power package. Proven in substantial volumes, these devices and their fixedfrequency counterparts represent a significant advance in off-line SMPS reliability growth and integration. FEATURES ■ ■ ■ ■ ■ ■ ■ ■ ■ Quasi-Resonant Operation for Low EMI and High Efficiency Output Power to 220 W Low-Power Output Standby Mode Pulse-by-Pulse Over-Current Protection Latched Over-Voltage and Thermal Protection Third-Generation Switching Transistor with Proportional Drive Maximum ON Time and Off Time Set During Manufacture Internal Under-Voltage Lockout with Hysteresis Over-Molded SIP with Integral Isolated Heat Spreader Always order by complete part number: Max. Cont. Peak Part Number Current, IC Current, ICM STR-S6707 STR-S6708 STR-S6709 ™ 6A 7.5 A 10 A 12 A 15 A 20 A Max. Sink Current, IS 1.5 A 1.5 A 2A STR-S6707 THRU STR-S6709 OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS STR-S6707 AND STR-S6708 FUNCTIONAL BLOCK DIAGRAM V IN INHIBIT 8 9 R UVLO OVER-VOLT. PROTECT FAULT LATCH S PROPORTIONAL DRIVE Q 1 kΩ REF. 5 DRIVE 4 SINK 3 BASE 1 COLLECTOR 2 COMMON 6 OVER-CURRENT PROTECTION 0.7 Ω TSD OSC. Rton + 0.75 V + FDBK 7 3300 pF 1.4 V Rtoff -1 V + + 5.1 V Dwg. FK-001 ALLOWABLE PACKAGE POWER DISSIPATION MAXIMUM SAFE OPERATING AREA 30 STR-S6709 (20 A) 54 W MOUNTING SURFACE TEMPERATURE STR-S6708 (15 A) STR-S6707 (12 A) RECOMMENDED MAX. FRAME TEMP. = +100°C 40 LIMITED BY FRAME TEMP. = +125°C MAX. 20 COLLECTOR CURRENT in AMPERES ALLOWABLE PACKAGE POWER DISSIPATION in WATTS 60 10 5.0 3.0 L = 6 mH IB1 = 2.5 A (STR-S6707/08) or 3 A (STR-S6709) IB2 = 0.8 A (STR-SA6707/08) or 1.2 A (STR-S6709) ton = 100 µs dc < 1% 1.0 FREE AIR 0.5 3.2 W 0.3 0 20 60 100 TEMPERATURE in °C 140 0 200 400 600 800 1000 COLLECTOR-EMITTER VOLTAGE in VOLTS Dwg. GK-003-2 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 1994 Allegro MicroSystems, Inc. Dwg. GK-002 ™ STR-S6707 THRU STR-S6709 OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS STR-S6709 FUNCTIONAL BLOCK DIAGRAM AS ABOVE EXCEPT FOR SINK OUTPUT 4 SINK 20 Ω ELECTRICAL CHARACTERISTICS at TA = +25°C, VIN = 8.5 V, voltage measurements are referenced to Common (pin 2) (unless otherwise noted). Characteristic On-State Voltage Under-Voltage Lockout Over-Voltage Threshold Output Leakage Current Output Saturation Voltage Symbol VINT VINQ VOVP(th) ICEX VCE(sat) VBE(sat) DC Current Gain Maximum ON Time Minimum OFF Time Over-Current Threshold Feedback Threshold Volt. Inhibit Threshold Voltage Latch Holding Current Latch Reset Voltage Supply Current Insulation RMS Voltage Thermal Shutdown Thermal Resistance hFE ton toff VOCP(th) VFDBK(th) VINH(th) IINH VQ IIN(ON) IIN(OFF) VWM(RMS) TJ RθJM Test Conditions Turn-on, increasing VIN Turn-off, decreasing VIN VCE = 850 V, VBE = -1.5 V STR-S6707, IC = 2 A, IB = 400 mA STR-S6708, IC = 3 A, IB = 600 mA STR-S6709, IC = 4 A, IB = 800 mA STR-S6707, IC = 2 A, IB = 400 mA STR-S6708, IC = 3 A, IB = 600 mA STR-S6709, IC = 4 A, IB = 800 mA VCE = 4 V, IC = 1 A Oscillation stops Oscillation synchronized Oscillation stops (fault latch set) VIN reduced from 10.7 V to 4 V IIN ≤ 100 µA, VIN reduced from 10.7 V Operating All terminals simultaneous reference metal plate against backside Output junction to mounting surface Limits Min. Typ. Max. 7.6 8.0 8.4 4.6 4.9 5.2 9.2 – 10.7 – – 100 – – 400 – – 400 – – 400 – – 1.5 – – 1.5 – – 1.5 29 – 61 33 – 41 45 – 55 -0.9 -1.0 -1.1 – 650 – 0.65 0.75 0.85 – 1.4 2.0 3.2 5.1 5.6 – – 500 2.5 3.1 – 15 – 29 – – 200 2000 – – Units V V V µA mV mV mV V V V – µs µs V mV V V V µA V mA µA V 125 – °C °C/W NOTES: Negative current is defined as coming out of (sourcing) the specified device terminal. Typical Data is for design information only. www.allegromicro.com 150 2.0 – – STR-S6707 THRU STR-S6709 OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS TYPICAL CHARACTERISTICS 100 50 DC CURRENT GAIN 30 VCE= 4 V 10 STR-S6709 STR-S6708 STR-S6707 5.0 3.0 1.0 0.01 0.03 0.1 1.0 10 0.3 3.0 COLLECTOR CURRENT in AMPERES 100 30 Dwg. GK-001 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 ™ STR-S6707 THRU STR-S6709 OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS TYPICAL QUASI-RESONANT FLYBACK CONVERTER WARNING: lethal potentials are present. See text. + OUTPUT + 8 FULL-BRIDGE RECTIFIER AC INPUT 100 V/120 V + 9 R + + S 5 Q VOLTAGE SENSE 4 + 3 – OUTPUT + 1 + 2 7 + 6 + ★ Dwg. EK-004A APPLICATIONS INFORMATION WARNING — These devices are designed to be operated at lethal voltages and energy levels. Circuit designs that embody these components must conform with applicable safety requirements. Precautions must be taken to prevent accidental contact with power-line potentials. Do not connect grounded test equipment. The use of an isolation transformer is recommended during circuit development and breadboarding. Recommended mounting hardware torque: 4.34 – 5.79 lbf•ft (6 – 8 kg•cm or 0.588 – 0.784 Nm). Recommended metal-oxide-filled, alkyl-degenerated oil base, silicone grease: Dow Corning 340, or equivalent www.allegromicro.com STR-S6707 THRU STR-S6709 OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS Dimensions in Inches (for reference only) 0.953 ±0.008 T M REF. 0.130 ø 0.610 ±0.008 0.216 ±0.008 ±0.008 0.709 ±0.008 1.49 ±0.012 0.118 0.130 ±0.004 0.276 ±0.016 0.216 1 0.016 0.033 9 0.100 0.026 ±0.004 +0.008 –0.004 0.177 +0.008 –0.004 ±0.028 PACKAGE CENTER LEAD CENTER Dwg. MK-003-9 in NOTE: Exact body and lead configuration at vendor’s option within limits shown. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 ™ STR-S6707 THRU STR-S6709 OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS Dimensions in Millimeters (controlling dimensions) 24.2 ±0.2 T REF M 3.3 ø 15.5 ±0.2 ±0.2 5.5 ±0.2 18.0 ±0.2 23.0 ±0.3 3.0 3.3 ±0.1 7.0 ±0.4 5.5 1 0.85 0.4 9 2.54 ±0.1 +0.2 –0.1 0.65 +0.2 –0.1 4.5 ±0.7 PACKAGE CENTER LEAD CENTER Dwg. MK-003-9 mm NOTE: Exact body and lead configuration at vendor’s option within limits shown. www.allegromicro.com STR-S6707 THRU STR-S6709 OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS SWITCHING REGULATOR PMCMs Part Number* Application VI Max PO Power Switch 3002M 5 V switching regulator and a 9 V switching regulator† 7.0-33 V – – – 500 mA 400 mA bipolar bipolar 3004M 5 V switching regulator and Dual 9 V switching regulator 7.0-33 V – – – 500 mA 2 x 400 mA bipolar bipolar S5703 Quasi-resonant flyback converter 110/120 V 140 W 500 V 6A bipolar S5707 Quasi-resonant flyback converter 85-265 V 220/240V 90 W 140 W 850 V 6A bipolar S5708 Quasi-resonant flyback converter 85-265 V 220/240 V 120 W 180 W 850 V 7.5 A bipolar S6703 Quasi-resonant flyback converter 110/120V 140 W 500 V 6A bipolar S6704 Quasi-resonant flyback converter 110/120 V 100 W 500 V 5A bipolar S6707 Quasi-resonant flyback converter 85-265 V 220/240 V 90 W 140 W 850 V 6A bipolar S6708 Quasi-resonant flyback converter 85-265 V 220/240 V 120 W 180 W 850 V 7.5 A bipolar S6709 Quasi-resonant flyback converter 85-265 V 220/240 V 160 W 220 W 850 V 10 A bipolar 8033S 3.3 V switching regulator 5.5-28 V – – 3A bipolar 8050S 5.0 V switching regulator 7.0-40 V – – 3A bipolar 8090S 9.0 V switching regulator 12-40V – – 3A bipolar 8120S 12 V switching regulator 15-40 V – – 3A bipolar 8150S 15 V switching regulator 18-40 V – – 3A bipolar * Complete part number includes additional characters to indicate operating temperature range and/or package style. † Also includes linear regulator output for 15.7 V at 1.0 A. ‡ Without heat sink. The products described here are manufactured in Japan by Sanken Electric Co., Ltd. for sale by Allegro MicroSystems, Inc. Sanken Electric Co., Ltd. and Allegro MicroSystems, Inc. reserve the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the performance, reliability, or manufacturability of their products. Therefore, the user is cautioned to verify that the information in this publication is current before placing any order. These products are not authorized for use as critical components in life-support appliances, devices, or systems without express written approval. The information included herein is believed to be accurate and reliable. However, Sanken Electric Co., Ltd. and Allegro MicroSystems, Inc. assume no responsibility for its use; nor for any infringements of patents or other rights of third parties which may result from its use. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 ™