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| STR83145 AND STR84145 INTERIM ISSUE (subject to change without notice) August 16, 1994 Data Sheet 28190 LATCHED, UNIVERSAL INPUT-VOLTAGE SWITCHES Intended for power supplies with universal inputs (85 V to 265 V rms), the STR83145 and STR84145 latched, universal input-voltage switches incorporate timing, control, and drive circuitry with a highcurrent triac (bidirectional triode thyristor) switch. Each device senses the applied ac line potential and automatically switches the rectifier and associated capacitors between a voltage-doubler configuration (for line voltages to 141 V) and a full-bridge configuration (for line voltages greater than 149 V). This eliminates the possibility of user error with adjustable jumpers or switches. Also, the related switch-mode power stage need operate only over a reduced range of dc input voltages when compared with "wide input" power supplies using a bridge rectifier only. The reduction in dc input voltage range permits the use of lowervoltage capacitors and leads to a reduction in power stage stresses and power dissipation. The STR83145 and STR84145 differ only in their maximum ac current rating (10 A and 12 A, respectively). The internal sensitive-gate triac is switched by a temperaturecompensated constant-current gate driver driven by a 15 kHz pulse train to reduce power dissipation. The switch-over voltage is accurately set during manufacture for consistent operation. An user-adjustable delay is provided to ensure start-up in the full-bridge mode. Once established (by an input voltage greater than 149 V rms), an integral latch holds the full-bridge mode to preclude false application of the doubler mode during brownouts, voltage droops, or missing cycles. The requirements of low transient thermal impedance and steadystate thermal resistance are satisfied in a molded, 5-lead single in-line power package. Similar input-voltage switches, with a switch point of 159 V rms, are also available. LATCH 2 1 3 4 MT1 Dwg. PK-005 ABSOLUTE MAXIMUM RATINGS Repetitive Peak OFF-State Voltage, VDRM ............................................. 500 V Static ON-State Current, IT(RMS) STR83145 ...................................... 10 A STR84145 ...................................... 12 A Non-Repetitive Surge ON-State Current, ITSM STR83145 .................................... 100 A STR84145 .................................... 120 A Package Power Dissipation, PD ........................................ See Graph Triac Junction Temperature, TJ ..... +125C Frame Temperature, TM ................ +100C Operating Temperature Range, TA ............................... -20C to +125C Storage Temperature Range, Tstg ............................. -40C to +125C COMMON DELAY GATE MT2 5 OSC. + FEATURES s Low Duty Cycle Triac Drive for Minimum Dissipation s For Universal Input Operation Between 85 V rms and 265 V rms to 10 A or 12 A s Internal Latch Prevents False Mode Switching s Internal Sensitive-Gate Power Triac s Adjustable Start-Up Delay s Accurate 145 V rms Switch-Point Voltage s Low External Parts Count s Low Power Dissipation s Low-Power External Parts Always order by complete part number: Part Number STR83145 STR84145 Max. On-State Current 10 A rms 12 A rms TM STR83145 AND STR84145 LATCHED, UNIVERSAL INPUT-VOLTAGE SWITCHES FUNCTIONAL BLOCK DIAGRAM GATE 4 MT1 2 3 MT2 REG. + LATCH DELAY 1 7V + OSC. INFINITE HEAT SINK (NO MICA SHEET) 150 mm x 150 mm x 2 mm (WITH MICA SHEET) 100 mm x 100 mm x 2 mm (WITH MICA SHEET) 75 mm x 75 mm x 2 mm (WITH MICA SHEET) PD IS LIMITED BY TJ 5 COMMON Dwg. FK-004 ALLOWABLE PACKAGE POWER DISSIPATION 30 27 W ALLOWABLE PACKAGE POWER DISSIPATION in WATTS 25 20 15 10 5 FREE AIR 2W PD IS LIMITED BY T M 0 0 20 40 60 80 TEMPERATURE in C 100 120 Dwg. GK-010 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright (c) 1994 Allegro MicroSystems, Inc. + TM STR83145 AND STR84145 LATCHED, UNIVERSAL INPUT-VOLTAGE SWITCHES SIMPLIFIED OPERATION 174-265 V rms 85-132 V rms 240-373 V peak + 246-373 V peak + + + Voltage-Doubler Mode Full-Bridge Mode Dwg. EK-006 ELECTRICAL CHARACTERISTICS at TA = +25C, voltage measurements are referenced to Common (pin 3) (unless otherwise noted). Characteristic On-State Voltage Symbol VTM IDRM VS tD VC Test Conditions STR83145, IT = 10 A* STR84145, IT = 12 A* Off-State Current STR83145, VD = 500 V STR84145, VD = 500 V Starting Voltage Startup Time Delay DC Switch-Over Voltage Temperature Coefficient of Switch-Over Voltage Input Current VT = 2 V C2 = 1 F, VMT1 100 V dc VDELAY 1 V -20C TM +100C Voltage-doubler mode, VMT1 = 195 V Full-bridge mode, VMT1 = 400 V Delay Terminal Voltage Triac Gate-Drive Osc. Freq. Latch Reset Voltage Thermal Resistance V DELAY fo VR RJM Vgate ref. MT1, VMT1 = 100 V VGATE = 400 mV FET channel to mounting surface Limits Min. Typ. Max. - - 1.8 - - - - 40 200 - - - - - 2.0 - 1.6 - 40 - - 205 45 - - - 15 - - - 100 - 100 100 210 - 10 6.5 7.0 - 15 1.8 Units V V A A V ms V mV/C mA mA V kHz V C/W VC IMT1 NOTES: Negative current is defined as coming out of (sourcing) the specified device terminal. Typical Data is for design information only. *In practical use, IT is recommended derated to 70%. STR83145 AND STR84145 LATCHED, UNIVERSAL INPUT-VOLTAGE SWITCHES TYPICAL CHARACTERISTICS 12 FULL SINE WAVE CONDUCTION ANGLE 1 + 2 360 10 AVERAGE ON-STATE POWER LOSS in WATTS 210 2 DC SWITCH-OVER VOLTAGE in VOLTS 8 1 205 6 4 200 2 0 -20 0 20 40 60 80 100 Dwg. GK-012 0 2 FRAME TEMPERATURE in C 4 6 STATIC ON-STATE CURRENT in AMPERES 8 10 Dwg. GK-013 40 40 TRIAC GATE-DRIVE DUTY CYCLE in % 30 dc 30 20 20 FO 10 10 VMT1 = 100 V 0 -25 0 +25 +50 +75 +100 AMBIENT TEMPERATURE in C 0 +125 Dwg. GK-008 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. TRIAC GATE-DRIVE OSCILLATOR FREQUENCY in kHz 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 TM STR83145 AND STR84145 LATCHED, UNIVERSAL INPUT-VOLTAGE SWITCHES TYPICAL APPLICATION 85-265 V rms -t RBV SERIES 240-373 V peak R1 + C3 RM11C 4 2 3 C4 + C1 + 1 + + C2 5 VOLTAGE-DOUBLER MODE STARTUP TIME DELAY in ms External component values have been selected for optimum device performance and reliability. Except for C2, component values other than the following may result in false operation of these devices. C1 C2 C3 C4 R1 = 4.7 F, 400 V = 1 F, 50 V = 0.047 F, 50 V = 0.047 F, 250 V = 4.7 3000 1000 300 Turn-ON delay (forced full-bridge mode) may be adjusted for desired system performance: tD 68 x C 2 where tD is the delay time in ms C2 is capacitance in F 100 30 0.3 1.0 3.0 C2 CAPACITANCE in F 10 30 Dwg. GK-011 + Dwg. EK-007 + TM= 25C STR83145 AND STR84145 LATCHED, UNIVERSAL INPUT-VOLTAGE SWITCHES Dimensions in Inches (for reference only) 0.126 O 0.004 0.701 0.012 T M REF. 0.197 REF. 0.177 0.008 0.012 1.102 0.008 0.012 0.276 0.866 0.012 0.906 0.004 0.079 0.157 0.004 0.039 0.177 0.020 0.004 +0.008 1 5 0.150 0.004 0.024 -0.004 0.177 0.020 0.100 0.004 Dwg. MK-001-5 in NOTES: 1. Exact body and lead configuration at vendor's option within limits shown. 2. Recommended mounting hardware torque: 4.34 - 5.79 lbf*ft. 3. The hatched area is exposed heat spreader, electrically common to pin 3. 4. Recommended 0.003" to 0.006" thick mica insulator with metal-oxide-filled, alkyl-degenerated oil base, silicone grease (Dow Corning 340, or equivalent); or Bergquist Sil-Pad(R). 37.5 mm 1.48" 8.5 mm 0.335" 0.5 mm 0.020" R 3.2 mm +0.15 mm/0.060" 0.126" o -0 Dwg. MK-004 25 mm 0.98" 1.417 +0.060 -0.040 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 TM STR83145 AND STR84145 LATCHED, UNIVERSAL INPUT-VOLTAGE SWITCHES Dimensions in Millimeters (controlling dimensions) 3.2 O 0.1 17.8 0.3 T M REF. REF. 4.5 0.2 28.0 0.3 0.2 7.0 22.0 0.3 23.0 0.3 5.0 0.1 2.0 4.0 0.5 1 5 3.81 0.1 4.5 0.1 1.0 0.1 0.6 +0.2 -0.1 4.5 0.5 2.54 0.1 Dwg. MK-001-5 mm NOTES: 1. Exact body and lead configuration at vendor's option within limits shown. 2. Recommended mounting hardware torque: 6 - 8 kgf*cm (0.588 - 0.785 Nm). 3. The hatched area is exposed heat spreader, electrically common to pin 3. 4. Recommended 0.08 mm to 0.15 mm thick mica insulator with metal-oxide-filled, alkyl-degenerated oil base, silicone grease (Dow Corning 340, or equivalent); or Bergquist Sil-Pad(R). 37.5 mm 1.48" 8.5 mm 0.335" 0.5 mm 0.020" R 3.2 mm +0.15 mm/0.060" 0.126" o -0 Dwg. MK-004 25 mm 0.98" 36.0 +1.5 -1.0 STR83145 AND STR84145 LATCHED, UNIVERSAL INPUT-VOLTAGE SWITCHES 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 TM |
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