STR-S5707 AND STR-S5708

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1 QUSI-RESONNT FLYBCK FLYBCK OFF-LINE OFF-LINE SWITCHING SWITCHING REGULTOR REGULTORS STR-S5707 ND STR-S5708 OFF-LINE SWITCHING REGULTORS WITH BIPOLR SWITCHING TRNSISTOR Data Sheet COLLECTOR COMMON BSE SINK OVER-CURRENT PROTECTION INHIBIT 32 V SENSE DRIVE V IN DRIVE OSC. FULT S FULT LTCH R REF. UVLO Dwg. PK-004 BSOLUTE MXIMUM RTINGS Supply Voltage, V IN V Output Voltage, V CEX V V EBO... 7 V Continuous Output Current, I C... See Table 1 ms Single-Pulse Output Current, I CM... See Table Sink Current, I S Drive Current, I D m Inhibit Voltage, V INH V Over-Current Protection Voltage Range, V OCP... ±3.5 V Insulation Voltage,V WM(RMS) V Package Power Diss., P D... See Graph Output Junction Temperature, T J C Internal Frame Temperature, T F C Operating Temperature Range, T C to 125 C Storage Temperature Range, T stg C to 125 C The STR-S5707 and STR-S5708 are specifically designed to meet the requirement for increased integration and reliability in off-line quasiresonant flyback converters with indirect feedback. Each device incorporates the primary control and proportional drive circuit with a third-generation high-voltage bipolar switching transistor. 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. 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. primary-side error amplifier with reference is included to facilitate regulation from an auxiliary or bias winding of the power transformer. 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, this device and its fixed-frequency counterparts represents a significant advance in off-line SMPS reliability growth and integration. FETURES Quasi-Resonant Operation for Low EMI and High Efficiency Low-Power Output Standby Mode Indirect Feedback from uxiliary Winding Reduces External Component Count 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 lways order by complete part number: Part Output Current Output Power, P O Number Continuous, I C Peak, I CM Wide C In 220/240 VC In STR-S W 140 W STR-S W 180 W

2 QUSI-RESONNT FLYBCK OFF-LINE SWITCHING REGULTORS FUNCTIONL BLOCK DIGRM V IN INHIBIT 9 6 SENSE 7 UVLO REF. OVER-VOLT. PROTECT R S FULT LTCH Q PROPORTIONL DRIVE 1 kω 8 DRIVE TSD 4 SINK OSC. 3 BSE 1500 pf R ton 1 COLLECTOR 0.75 V 3300 pf R toff 1.4 V -1 V 2 5 COMMON OVER-CURRENT PROTECTION 5.1 V Dwg. FK LLOWBLE PCKGE POWER DISSIPTION MXIMUM SFE OPERTING RE 30 LLOWBLE PCKGE POWER DISSIPTION in WTTS W 3.2 W FREE IR MOUNTING SURFCE TEMPERTURE RECOMMENDED MX. FRME TEMP. = 100 C LIMITED BY FRME TEMP. = 125 C MX. COLLECTOR CURRENT in MPERES STR-S5708 (15 ) STR-S5707 (12 ) L = 6 mh IB1 = 2.5 IB2 = 0.8 ton = 100 µs dc < 1% TEMPERTURE in C 140 Dwg. GK COLLECTOR-EMITTER VOLTGE in VOLTS Dwg. GK Northeast Cutoff, Box Worcester, Northeast Massachusetts Cutoff, Box (508) Worcester, Copyright Massachusetts 1994 llegro MicroSystems, (508) Inc

3 QUSI-RESONNT FLYBCK FLYBCK OFF-LINE OFF-LINE SWITCHING SWITCHING REGULTOR REGULTORS ELECTRICL CHRCTERISTICS at T = 25 C, V IN = 8.5 V, voltage measurements are referenced to Common (pin 2) (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 Output Leakage Current I CEX V CE = 850 V, V BE = -1.5 V 100 µ Output Saturation Voltage V CE(sat) STR-S5707, I C = 2, I B = 400 m 400 mv STR-S5708, I C = 3, I B = 600 m 400 mv V BE(sat) STR-S5707, I C = 2, I B = 400 m 1.5 V STR-S5708, I C = 3, I B = 600 m 1.5 V DC Current Gain h FE V CE = 4 V, I C = Maximum ON Time t on µs Minimum OFF Time t off µs Over-Current Threshold V OCP(th) V Sense Voltage V SENSE I SENSE = 3.2 m V Inhibit Threshold Voltage V INH(th) Oscillation stops V Oscillation synchronized V Oscillation stops (fault latch set) V Latch Holding Current I INH V IN reduced from 10.7 V to 4 V 500 µ Latch Reset Voltage V Q I IN 100 µ, V IN reduced from 10.7 V V Ref. Voltage Temp. Coeff. α VZ -20 C T F 100 C, I IN = 3.2 m 2.5 mv/ C Supply Current I IN(ON) Operating m I IN(OFF) 200 µ Insulation RMS Voltage V WM(RMS) ll terminals simultaneous reference 2000 V metal plate against backside Thermal Shutdown T J C Thermal Resistance R θjm Output 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 QUSI-RESONNT FLYBCK OFF-LINE SWITCHING REGULTORS TYPICL CHRCTERISTICS DC CURRENT GIN V = 4 V CE STR-S5708 STR-S COLLECTOR CURRENT in MPERES Dwg. GK Northeast Cutoff, Box Worcester, Massachusetts (508)

5 QUSI-RESONNT FLYBCK FLYBCK OFF-LINE OFF-LINE SWITCHING SWITCHING REGULTOR REGULTORS TYPICL QUSI-RESONNT FLYBCK CONVERTER WRNING: lethal potentials are present. See below. OUTPUT R S Q 8 C INPUT FULL-BRIDGE RECTIFIER OUTPUT 2 5 Dwg. EK-005 PPLICTIONS INFORMTION WRNING 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: lbf ft (6 8 kg cm or Nm). Recommended metal-oxide-filled, alkyl-degenerated oil base, silicone grease: Dow Corning 340, or equivalent

6 QUSI-RESONNT FLYBCK OFF-LINE SWITCHING REGULTORS Dimensions in Inches (Based on 1 mm = ") ± ±0.008 T REF. M ø ± ± ± ± ± ± ± ± PCKGE CENTER LED CENTER Dwg. MK in NOTE: Exact body and lead configuration at vendor s option within limits shown. 115 Northeast Cutoff, Box Worcester, Massachusetts (508)

7 QUSI-RESONNT FLYBCK FLYBCK OFF-LINE OFF-LINE SWITCHING SWITCHING REGULTOR REGULTORS Dimensions in Millimeters 15.5 ± ±0.2 T M REF 3.3 ø ± ± ± ± ± ± ± ±0.7 PCKGE CENTER LED CENTER Dwg. MK mm NOTE: Exact body and lead configuration at vendor s option within limits shown.

8 QUSI-RESONNT FLYBCK OFF-LINE SWITCHING REGULTORS SWITCHING REGULTOR PMCMs POWER CONVERSION/POWER MNGEMENT SELECTION GUIDES Part Number* pplication C In Max P O Power Switch 5703 Quasi-Resonant Flyback Converter 110/120 V 140 W 500 V 6 Bipolar 5707 Quasi-Resonant Flyback Convertter V 90 W 850 V 6 Bipolar 220/240V 140 W 5708 Quasi-Resonant Flyback Converter V 120 W 850 V 7.5 Bipolar 220/240 V 180 W 6511 Quasi-Resonant Flyback Converter 110/120 V 180 W 450 V 11 MOSFET 6525 Quasi-Resonant Flyback Converter V 120 W 600 V 6 MOSFET 6529 Quasi-Resonant Flyback Converter 220/240 V 180 W 800 V 5.4 MOSFET 6703 Quasi-Resonant Flyback Converter 110/120V 140 W 500 V 6 Bipolar 6704 Quasi-Resonant Flyback Converter 110/120 V 100 W 500 V 5 Bipolar 6707 Quasi-Resonant Flyback converter V 90 W 850 V 6 Bipolar 220/240 V 140 W 6708 Quasi-Resonant Flyback Converter V 120 W 850 V 7.5 Bipolar 220/240 V 180 W 6709 Quasi-Resonant Flyback Converter V 160 W 850 W 10 Bipolar 220/240 V 220 W * Complete part number includes additional characters to indicate operating temperature range and package style. LINER REGULTOR ICs Part Number* V O Max DC In Max Dropout Max I O Package V 10 V m 250 m SOT V 10 V m 250 m SOT-89 * Complete part number includes additional characters to indicate operating temperature range and package style. lso and Latched, Universal Input-Voltage Switches. llegro reserves 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 its products. Components made under military approvals will be in accordance with the approval requirements. The information included herein is believed to be accurate and reliable. However, llegro assumes 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)