Data Sheet 28113.1* STR-S6703 AND STR-S6704 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-S6703 and STR-S6704 are specifically designed to meet the requirement for increased integration and reliability in off-line quasiresonant flyback converters. These devices incorporate the primary control and proportional drive circuit with a third-generation 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 ....................... 500 V VEBO ................................................ 7 V Continuous Output Current, IC .......................................... See Table 1 ms Single-Pulse Output Current, ICM ........................................ See Table Sink Current, IS ................................. 1.5 A 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. Similar devices, with an output voltage rating of 850 V and output power ratings to 220 W, are available as the STR-S6707 thru STR-S6709. FEATURES ■ ■ ■ ■ ■ ■ ■ ■ Quasi-Resonant Operation for Low EMI and High Efficiency Output Power to 140 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 Current, ICM Part Number Current, IC STR-S6703 STR-S6704 ™ 6A 5A 12 A 10 A STR-S6703 AND STR-S6704 OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS 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-S6703 (54 W) MOUNTING SURFACE TEMPERATURE STR-S6703 (12 A) STR-S6704 (10 A) STR-S6704 (50 W) 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 IB2 = 0.8 A ton = 100 µs dc < 1% 1.0 FREE AIR 0.5 3.2 W 0.3 0 20 60 100 TEMPERATURE in °C 140 0 100 200 300 400 500 700 600 COLLECTOR-EMITTER VOLTAGE in VOLTS Dwg. GK-003-3 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 1994 Allegro MicroSystems, Inc. Dwg. GK-002-3 ™ STR-S6703 AND STR-S6704 OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS ELECTRICAL CHARACTERISTICS at TA = +25°C, VIN = 8.5 V, voltage measurements are referenced to Common (pin 2) (unless otherwise noted). Characteristic Symbol Test Conditions Limits Min. Typ. Max. Units On-State Voltage VINT Turn-on, increasing VIN 7.6 8.0 8.4 V Under-Voltage Lockout VINQ Turn-off, decreasing VIN 4.6 4.9 5.2 V Over-Voltage Threshold VOVP(th) 9.2 – 10.7 V Output Leakage Current ICEX VCE = 500 V, VBE = -1.5 V – – 100 µA STR-S6703, IC = 2 A, IB = 400 mA – – 400 mV STR-S6704, IC = 2 A, IB = 400 mA – – TBD mV STR-S6703, IC = 2 A, IB = 400 mA – – 1.5 V STR-S6704, IC = 2 A, IB = 400 mA – – TBD V STR-S6703, VCE = 4 V, IC = 1 A 23 – 46 – STR-S6704, VCE = 4 V, IC = 1 A 20 – 50 – Output Saturation Voltage VCE(sat) VBE(sat) DC Current Gain hFE Maximum ON Time ton 33 – 41 µs Minimum OFF Time toff 45 – 55 µs Over-Current Threshold VOCP(th) -0.9 -1.0 -1.1 V Feedback Threshold Volt. VFDBK(th) – 650 – mV Inhibit Threshold Voltage VINH(th) 0.65 0.75 0.85 V – 1.4 2.0 V Oscillation stops (fault latch set) 3.2 5.1 5.6 V – – 500 µA Oscillation stops Oscillation synchronized Latch Holding Current IINH VIN reduced from 10.7 V to 4 V Latch Reset Voltage VQ IIN ≤ 100 µA, VIN reduced from 10.7 V 2.5 3.1 – V Operating 15 – 28 mA – – 200 µA 2000 – – V 125 150 – °C – 2.0 – °C/W Supply Current IIN(ON) IIN(OFF) Insulation RMS Voltage VWM(RMS) Thermal Shutdown TJ Thermal Resistance RθJM All terminals simultaneous reference metal plate against backside Output junction to mounting surface NOTES: Negative current is defined as coming out of (sourcing) the specified device terminal. Typical Data is for design information only. www.allegromicro.com STR-S6703 AND STR-S6704 OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS TYPICAL CHARACTERISTICS 100 50 DC CURRENT GAIN 30 STR-S6703 VCE= 4 V 10 5.0 3.0 1.0 0.01 0.03 0.1 1.0 10 0.3 3.0 COLLECTOR CURRENT in AMPERES 30 100 Dwg. GK-001-3 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 ™ STR-S6703 AND STR-S6704 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 Q 5 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-S6703 AND STR-S6704 OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS Dimensions in Inches (for reference only) 0.953 ±0.008 T M REF. 0.610 0.130 ø ±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-S6703 AND STR-S6704 OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATORS Dimensions in Millimeters (controlling dimensions) 24.2 ±0.2 T M REF 15.5 ±0.2 3.3 ø 5.5 ±0.2 ±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-S6703 AND STR-S6704 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 ™