DISCONTINUED PRODUCT FOR REFERENCE ONLY STR-M6529 OFF-LINE SWITCHING REGULATOR WITH POWER MOSFET OUTPUT ABSOLUTE MAXIMUM RATINGS FEATURES

Transcription

1 WITH POWER MOSFET OUTPUT Data Sheet DRAIN SOURCE COMMON V IN FDBK OVER-CURRENT 4 PROTECTION 5 6 FAULT-LATCH TRIGGER & 7 SOFT START OSC. FAULT LATCH R S FAULT UVLO REF. Dwg. PK-002 ABSOLUTE MAXIMUM RATINGS Supply Voltage, V IN V Drain-Source Voltage, V DS V Continuous Drain Current, I D A 1 ms Single-Pulse Drain Current, I DM A Single-Pulse Avalanche Energy, E A mj Soft-Start/Fault-Latch Trig. Voltage, V SS/FL V Feedback Input Current, I FDBK ma Over-Current Protection Voltage, V OCP V Insulation Voltage,V WM(RMS) V Package Power Diss., P D... See Graph FET Junction Temperature, T J C Internal Frame Temperature, T F C Operating Temperature Range, T A C to 125 C Storage Temperature Range, T stg C to 125 C 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. 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. 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. Proven in substantial volumes, this device and its fixed-frequency counterparts represents a significant advance in off-line SMPS reliability growth and integration. FEATURES Quasi-Resonant Ringing Choke Converter Avalanche-Rated Power MOSFET Switch Pulse-by-Pulse Current Limiting Latched Over-Voltage and Thermal Protection DISCONTINUED PRODUCT Maximum ON Time and OFF Time Set During Manufacture FOR REFERENCE ONLY Internal Under-Voltage Lockout with Hysteresis Over-Molded SIP with Integral Isolated Heat Spreader Always order by complete part number: STR-M6529.

2 FUNCTIONAL BLOCK DIAGRAM V IN 5 UVLO OVER-VOLT. PROTECT R FAULT LATCH 1 2 DRAIN SOURCE REF. S Q 3.3 kω TSD OSC. FAULT-LATCH TRIGGER & SOFT START 7 TRIGGER 3.3 kω R ton R toff 4 OVER-CURRENT PROTECTION 0.75 V 0.01 µf 1000 pf 3 COMMON 6 FDBK ALLOWABLE PACKAGE POWER DISSIPATION Dwg. FK MAXIMUM SAFE OPERATING AREA ALLOWABLE PACKAGE POWER DISSIPATION in WATTS W 2.8 W FREE AIR MOUNTING SURFACE TEMPERATURE RECOMMENDED MAX. FRAME TEMP. = 100 C TEMPERATURE in C LIMITED BY FRAME TEMP. = 125 C MAX. 140 Dwg. GK DRAIN CURRENT in AMPERES LIMITED BY r DS(on) NO HEAT SINK NATURAL COOLING T = 25 C A t = 1 ms SINGLE PULSE w t = 10 ms SINGLE PULSE w t = 0.1 ms SINGLE PULSE w DRAIN-TO-SOURCE VOLTAGE in VOLTS LIMITED BY V DS max 1000 Dwg. GK Northeast Cutoff, Box Worcester, Massachusetts (508) Copyright 1994 Allegro MicroSystems, Inc.

3 600 ALLOWABLE AVALANCHE ENERGY ALLOWABLE AVALANCHE ENERGY in mj SINGLE PULSE DRAIN CURRENT = 5 A SUPPLY VOLTAGE = 50 V STARTING CHANNEL TEMPERATURE in C Dwg. GK ELECTRICAL CHARACTERISTICS at T A = 25 C, V IN = 18 V, voltage measurements are referenced to Common (pin 3) (unless otherwise noted). Limits Characteristic Symbol Test Conditions Min. Typ. Max. Units On-State Voltage V INT Turn-on, increasing V IN V Under-Voltage Lockout V INQ Turn-off, decreasing V IN V Over-Voltage Threshold V OVP(th) V FET Leakage Current I DSS V DS = 800 V 300 µa FET ON Resistance r DS(on) V GS = 10 V, I D = 2.5 A Ω Output Fall Time t f V DD = 250 V, I D = 2.5 A, 10% to 90% V DS 250 ns Maximum ON Time t on µs Minimum OFF Time t off µs Over-Current Threshold V OCP(th) mv Feedback Threshold V FDBK(th) 750 mv Soft-Start Current I SS V SS = 0 V ma Fault-Latch Threshold Volt. V FL(th) V Fault-Latch Holding Current I INH V IN reduced to 8.5 V µa Fault-Latch Reset Voltage V INQ I IN <20 µa, V IN reduced from 31 V V Insulation RMS Voltage V WM(RMS) All terminals simultaneous reference 2000 V metal plate against backside Supply Current I IN(ON) Operating ma I IN(OFF) Start up, V IN =14 V 100 µa Thermal Shutdown T J C Thermal Resistance R θjm FET junction to mounting surface 2.0 C/W NOTES: Negative current is defined as coming out of (sourcing) the specified device terminal. Typical Data is for design information only.

4 TYPICAL APPLICATION WARNING: lethal potentials are present. See text. OUTPUT 5 STR-M6529 AC INPUT 220 V/240 V FULL-BRIDGE RECTIFIER R S Q 1 2 VOLTAGE SENSE 7 OUTPUT Dwg. EK 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: lbf ft (6 8 kg cm or Nm). Recommended metal-oxide-filled, alkyl-degenerated oil base, silicone grease: Dow Corning 340, or equivalent 115 Northeast Cutoff, Box Worcester, Massachusetts (508)

5 Dimensions in Inches (for reference only) ± ±0.008 T M REF ø ± ± ± ± ± ± ± ± Dwg. MK in NOTE: Exact body and lead configuration at vendor s option within limits shown.

6 Dimensions in Millimeters (controlling dimensions) 19.8 ± ±0.2 T M REF. 3.3 ø ± ± ± ± ± ± ± ±0.7 Dwg. MK 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 Worcester, Massachusetts (508)