Data Sheet 28102.1 STR-M6529 OFF-LINE SWITCHING REGULATOR – WITH POWER MOSFET OUTPUT DRAIN 1 SOURCE 2 COMMON 3 OVER-CURRENT PROTECTION 4 OSC. The STR-M6529 is specifically designed to meet the requirement for increased integration and reliability in off-line flyback converters operating in the quasi-resonant ringing choke mode. The device incorporates the primary control and drive circuit with a discrete avalanche-rated high-voltage power MOSFET. T C FAULT LATCH R 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. U Y D L O + FAULT V IN 5 UVLO FDBK 6 REF. FAULT-LATCH TRIGGER & SOFT START 7 Cycle-by-cycle current limiting, soft start, under-voltage lock-out with hysteresis, over-voltage protection, and thermal shutdown protect the devices during all normal and overload conditions. Over-voltage protection, thermal shutdown, or an external fault signal are 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 D E U N Supply Voltage, VIN ........................... 35 V I T Continuous Drain Current, ID ............ 5.4 A 1 ms Single-Pulse Drain Current, IDM ................................................. 20 A N O Single-Pulse Avalanche Energy, EA .............................................. 400 mJ Soft-Start/Fault-Latch Trig. Voltage, VSS/FL ............................................. 12 V C S R O 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 Drain-Source Voltage, VDS .............. 800 V R P N E R E FEATURES F E ■ Quasi-Resonant Ringing Choke Converter R ■ Avalanche-Rated Power MOSFET Switch Feedback Input Current, IFDBK ........ 20 mA ■ Pulse-by-Pulse Current Limiting Over-Current Protection Voltage, VOCP ............................................. 3.5 V ■ Latched Over-Voltage and Thermal Protection Insulation Voltage,VWM(RMS) ........... 2000 V ■ Maximum ON Time and OFF Time Set During Manufacture I D — F Package Power Diss., PD ........ See Graph FET Junction Temperature, TJ ...... +150 °C ■ Internal Under-Voltage Lockout with Hysteresis Internal Frame Temperature, TF ... +125 °C ■ Over-Molded SIP with Integral Isolated Heat Spreader Operating Temperature Range, TA ............................... -20°C to +125°C Storage Temperature Range, Tstg ............................. -40°C to +125°C Always order by complete part number: STR-M6529 . ™ STR-M6529 OFF-LINE SWITCHING REGULATOR FUNCTIONAL BLOCK DIAGRAM V IN 5 R UVLO OVER-VOLT. PROTECT FAULT LATCH S 1 DRAIN 2 SOURCE 4 OVER-CURRENT PROTECTION 3 COMMON Q 3.3 kΩ REF. TSD OSC. 7 TRIGGER 3.3 kΩ FAULT-LATCH TRIGGER & SOFT START R toff R ton + 0.75 V 1000 pF 0.01 µF 6 FDBK Dwg. FK-002-2 ALLOWABLE PACKAGE POWER DISSIPATION MAXIMUM SAFE OPERATING AREA 100 MOUNTING SURFACE TEMPERATURE t w = 0.1 ms SIN GL EP UL SE 30 RECOMMENDED MAX. FRAME TEMP. = +100°C 40 LIMITED BY FRAME TEMP. = +125°C MAX. 20 LIMITED BY r DS(on) 10 tw =1 t ms w = SIN 10 GL ms EP SIN UL GL SE EP UL SE 3.0 LIMITED BY V DS max 54 W DRAIN CURRENT in AMPERES ALLOWABLE PACKAGE POWER DISSIPATION in WATTS 60 1.0 NO HEAT SINK NATURAL COOLING TA = +25°C 0.3 FREE AIR 2.8 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-003-1 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 1994 Allegro MicroSystems, Inc. Dwg. GK-004-1 ™ STR-M6529 OFF-LINE SWITCHING REGULATOR ALLOWABLE AVALANCHE ENERGY in mJ 600 ALLOWABLE AVALANCHE ENERGY 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 Current Fault-Latch Threshold Volt. 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) ISS 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 = 800 V VGS = 10 V, ID = 2.5 A VDD = 250 V, ID = 2.5 A, 10% to 90% VDS VSS = 0 V VIN reduced 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 – 1.8 2.2 – – 250 22.5 – 27.5 2.0 – 4.0 700 – 800 – 750 – -2.2 – -3.4 8.0 – 9.2 – 340 400 6.5 – 8.5 2000 – – Units V V V µA Ω ns µs µs mV mV mA V µA V V 16 – 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 26 100 – – STR-M6529 OFF-LINE SWITCHING REGULATOR TYPICAL APPLICATION WARNING: lethal potentials are present. See text. + OUTPUT FULL-BRIDGE RECTIFIER AC INPUT 220 V/240 V 5 STR-M6529 1 R + + 2 S Q VOLTAGE SENSE + 7 – OUTPUT ★ + 4 3 + 6 Dwg. EK-002-1 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 IRFPE40. 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 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 ™ STR-M6529 OFF-LINE SWITCHING REGULATOR Dimensions in Inches (for reference only) 0.780 ±0.008 T M REF 0.130 ø 0.157 0.216 ±0.008 ±0.008 0.689 ±0.008 0.906 ±0.012 ±0.008 0.128 ±0.004 0.276 ±0.02 0.216 1 0.033 +0.008 –0.004 7 0.100 ±0.004 0.177±0.028 0.026 +0.008 –0.004 Dwg. MK-003-7 in NOTE: Exact body and lead configuration at vendor’s option within limits shown. STR-M6529 OFF-LINE SWITCHING REGULATOR Dimensions in Millimeters (controlling dimensions) 19.8 ±0.2 T M REF. 3.3 ø 4.0 5.5 ±0.2 17.5 ±0.2 23.0 ±0.3 ±0.2 ±0.2 3.25 ±0.1 7.0 ±0.5 5.5 1 0.85 +0.2 –0.1 7 2.54 ±0.1 0.65 +0.2 –0.1 4.5 ±0.7 Dwg. MK-003-7 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. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 ™