Data Sheet 28102.11 STR-S6525 OFF-LINE SWITCHING REGULATOR – WITH POWER MOSFET OUTPUT The STR-S6525 is specifically designed to meet the requirement for increased integration and reliability in off-line flyback converters operating in a constant OFF-time mode. The device incorporates the primary control and drive circuit with a discrete avalanche-rated highvoltage power MOSFET. DRAIN 1 SOURCE 2 COMMON 3 SYNC 4 V IN 5 UVLO FDBK 6 REF. SOFT START 7 FAULT-LATCH TRIGGER 8 OVER-CURRENT PROTECTION 9 OSC. FAULT LATCH R T C S Crucial system parameters such as maximum ON time and OFF time are fixed during manufacture. Local control circuit decoupling and layout are optimized within the device. FAULT U Y D L O Cycle-by-cycle current limiting, soft start, under-voltage lock-out with hysteresis, over-voltage protection, and thermal shutdown protect the device during all normal and overload conditions. Over-voltage protection, thermal shutdown, or an external fault signal be latched. 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. + Dwg. PK-002-1 D E Supply Voltage, VIN ........................... 35 V U N Drain-Source Voltage, VDS .............. 600 V Continuous Drain Current, ID ............ 6.0 A I T Single-Pulse Avalanche Energy, EA .............................................. 400 mJ N O Feedback Input Current, IFDBK ........ 20 mA Fault-Latch Trig. Input Current, IFL 1.0 mA dc ≤ 25%, IFLM ........................... -50 mA C S R O Soft-Start Output Current, ISS ....... -3.0 mA I D Over-Current Protection Voltage, VOCP ............................................. 3.5 V F E C N O Proven in substantial volumes, this device and its fixed-frequency counterparts represents a significant advance in off-line SMPS reliability growth and integration. ABSOLUTE MAXIMUM RATINGS 1 ms Single-Pulse Drain Current, IDM ................................................. 24 A R P N E R E FEATURES F E ■ Constant OFF-Time Converter Operating Mode ■ Avalanche-Rated Power MOSFET Switch R ■ Pulse-by-Pulse Current Limiting ■ Latched Over-Voltage and Thermal Protection Insulation Voltage,VWM(RMS) ........... 2000 V ■ Maximum ON Time and OFF Time Set During Manufacture Package Power Diss., PD ........ See Graph ■ Internal Under-Voltage Lockout with Hysteresis — FET Junction Temperature, TJ ...... +150 °C Internal Frame Temperature, TF ... +125 °C ■ Over-Molded SIP with Integral Isolated Heat Spreader Operating Temperature Range, TA ............................... -20°C to +125°C ■ External Synchronization Capability Storage Temperature Range, Tstg ............................. -30°C to +125°C Always order by complete part number: STR-S6525 . ™ STR-S6525 OFF-LINE SWITCHING REGULATOR FUNCTIONAL BLOCK DIAGRAM V IN 5 R UVLO OVER-VOLT. PROTECT SOFT START FAULT LATCH 2 kΩ S 1 DRAIN 2 SOURCE 9 OVER-CURRENT PROTECTION 3 COMMON Q REF. 7 TSD OSC. TRIGGER 1 kΩ 0.01 µF Rton 8 + 0.75 V 0.01 µF 20 kΩ FAULT-LATCH TRIGGER Rtoff 1000 pF 6 4 FDBK SYNC Dwg. FK-002-1 ALLOWABLE PACKAGE POWER DISSIPATION MAXIMUM SAFE OPERATING AREA 100 MOUNTING SURFACE TEMPERATURE t 30 RECOMMENDED MAX. FRAME TEMP. = +100°C 40 LIMITED BY FRAME TEMP. = +125°C MAX. 20 LIMITED BY r DS(on) tw 10 3.0 IN FIN ITE 1.0 =1 w = 0.1 ms SIN GL EP UL SE ms SIN GL EP UL SE LIMITED BY V DS max 54 W DRAIN CURRENT in AMPERES ALLOWABLE PACKAGE POWER DISSIPATION in WATTS 60 HE AT SIN K NO HEAT SINK NATURAL COOLING TA = +25°C FREE AIR 0.3 3.2 W 0.1 0 20 60 100 TEMPERATURE in °C 140 3.0 10 30 100 300 1000 DRAIN-TO-SOURCE 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-004-4 ™ STR-S6525 OFF-LINE SWITCHING REGULATOR ALLOWABLE AVALANCHE ENERGY ALLOWABLE AVALANCHE ENERGY in mJ 600 500 SINGLE PULSE DRAIN CURRENT = 5 A SUPPLY VOLTAGE = 50 V 400 300 200 100 0 0 20 40 80 120 60 100 STARTING CHANNEL TEMPERATURE in °C 140 160 Dwg. GK-009-1 ELECTRICAL CHARACTERISTICS at TA = +25°C, VIN = 18 V, voltage measurements are referenced to Common (pin 3) (unless otherwise noted). Characteristic On-State Voltage Under-Voltage Lockout Over-Voltage Threshold FET Leakage Current FET ON Resistance Output Fall Time Maximum ON Time Minimum OFF Time Over-Current Threshold Feedback Threshold Soft-Start Voltage Sync. Trigger Threshold Volt. Fault-Latch Trig. Threshold Fault-Latch Holding Current Fault-Latch Reset Voltage Insulation RMS Voltage Supply Current Thermal Shutdown Thermal Resistance Symbol V INT V INQ VOVP(th) IDSS rDS(on) tf ton toff VOCP(th) V FDBK(th) V SS VSYNC(th) V FL(th) IINH V INQ VWM(RMS) IIN(ON) IIN(OFF) TJ RθJM Test Conditions Turn-on, increasing VIN Turn-off, decreasing VIN VDS = 600 V VGS = 10 V, ID = 3 A VDD = 200 V, ID = 5 A, 10% to 90% VDS IFDBK = 0 VIN reduced from 31 V to 8.5 V IIN ≤ 20 µA, VIN reduced from 31 V All terminals simultaneous reference metal plate against backside Operating Start up, VIN =14 V FET junction to mounting surface Limits Min. Typ. Max. 14.4 – 17.6 9.0 – 11 26 – 31 – – 300 – 1.0 1.25 – – 250 27 – 33 50 – 62 700 – 800 – 750 – 8.7 – 9.7 – 3.0 – 680 – 880 – 340 400 6.5 – 8.5 2000 – – Units V V V µA Ω ns µs µs mV mV V V mV µA V V 9.0 – 125 – mA µA °C °C/W NOTES: Negative current is defined as coming out of (sourcing) the specified device terminal. Typical Data is for design information only. – – 150 2.0 15 200 – – STR-S6525 OFF-LINE SWITCHING REGULATOR TYPICAL CHARACTERISTICS 50 ON TIME in µs 40 30 20 10 0 0 0.2 0.4 0.6 0.8 1.0 FEEDBACK CURRENT in mA Dwg. GK-019 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 ™ STR-S6525 OFF-LINE SWITCHING REGULATOR TYPICAL APPLICATION WARNING: lethal potentials are present. See text. + OUTPUT 5 STR-S6525 1 R + 2 S Q 7 FULL-BRIDGE RECTIFIER AC INPUT + VOLTAGE SENSE + – OUTPUT ★ 8 + 9 3 6 4 150 Ω TURN ON TO PIN 6 TO PIN 8 Dwg. EK-001 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. The power MOSFET outputs of these devices are similar to the International Rectifier type IRFBC40. These devices feature an excellent combination of fast switching, ruggedized device design, low on-resistance, and cost effectiveness. 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 STR-S6525 OFF-LINE SWITCHING REGULATOR 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-S6525 OFF-LINE SWITCHING REGULATOR 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. 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 design of their products. 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. STR-S6525 OFF-LINE SWITCHING REGULATOR POWER CONVERSION/POWER MANAGEMENT SELECTION GUIDES SWITCHING REGULATOR PMCMs Part Number* 3002M Application 5 V Switching Regulator and a 9 V Switching Regulator† VI 7.0-33 V Max PO – 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 F6624 Quasi-Resonant Flyback Converter 100/120 V 130 W 450 V 0.92 Ω MOSFET F6626 Quasi-Resonant Flyback Converter 100/120 V 190 W 450 V 0.58 Ω MOSFET F6628 Quasi-Resonant Flyback Converter 100/120 V 290 W 450 V 0.35 Ω MOSFET F6652 Quasi-Resonant Flyback Converter 85-265 V 86 W 650 V 2.8 Ω MOSFET F6653 Quasi-Resonant Flyback Converter 85-265 V 120 W 650 V 1.95 Ω MOSFET F6654 Quasi-Resonant Flyback Converter 85-265 V 190 W 650 V 1.15 Ω MOSFET F6656 Quasi-Resonant Flyback Converter 85-265 V 300 W 650 V 0.71 Ω MOSFET F6672 Quasi-Resonant Flyback Converter 200/220 V 50 W 900 V 7.7 Ω MOSFET F6674 Quasi-Resonant Flyback Converter 85-265 V 76 W 900 V 4.49 Ω MOSFET F6676 Quasi-Resonant Flyback Converter 85-265 V 115 W 900 V 2.81 Ω MOSFET 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 – – Power Switch 500 mA Bipolar 400 mA 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. ™ POWER CONVERSION/POWER MANAGEMENT 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000