INTERIM ISSUE LATCHED, UNIVERSAL INPUT-VOLTAGE SWITCHES OSC. LATCH (subject to change without notice) August 16, 1994 3 4 MT2 GATE 5 2 MT1 COMMON 1 DELAY + 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 ..... +125 °C Frame Temperature, TM ................ +100 °C Operating Temperature Range, TA ............................... -20°C to +125°C Storage Temperature Range, Tstg ............................. -40°C to +125°C 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. FEATURES ■ Low Duty Cycle Triac Drive for Minimum Dissipation ■ For Universal Input Operation Between 85 V rms and 265 V rms to 10 A or 12 A ■ Internal Latch Prevents False Mode Switching ■ Internal Sensitive-Gate Power Triac ■ Adjustable Start-Up Delay ■ Accurate 145 V rms Switch-Point Voltage ■ Low External Parts Count ■ Low Power Dissipation ■ Low-Power External Parts Always order by complete part number: Part Number STR83145 STR84145 ™ Max. On-State Current 10 A rms 12 A rms Data Sheet 28190 STR83145 AND STR84145 STR83145 AND STR84145 LATCHED, UNIVERSAL INPUT-VOLTAGE SWITCHES FUNCTIONAL BLOCK DIAGRAM GATE 4 MT1 3 2 MT2 REG. + 1 + 7V + OSC. 5 COMMON Dwg. FK-004 ALLOWABLE PACKAGE POWER DISSIPATION 30 27 W ALLOWABLE PACKAGE POWER DISSIPATION in WATTS DELAY LATCH 25 INFINITE HEAT SINK (NO MICA SHEET) 20 150 mm x 150 mm x 2 mm (WITH MICA SHEET) 100 mm x 100 mm x 2 mm (WITH MICA SHEET) 15 75 mm x 75 mm x 2 mm (WITH MICA SHEET) 10 PD IS LIMITED BY TJ 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 © 1994 Allegro MicroSystems, Inc. ™ STR83145 AND STR84145 LATCHED, UNIVERSAL INPUT-VOLTAGE SWITCHES 240–373 V peak + 174–265 V rms 85–132 V rms SIMPLIFIED OPERATION 246–373 V peak + + + Voltage-Doubler Mode Full-Bridge Mode Dwg. EK-006 ELECTRICAL CHARACTERISTICS at TA = +25°C, voltage measurements are referenced to Common (pin 3) (unless otherwise noted). Characteristic On-State Voltage Off-State Current Symbol VTM IDRM Test Conditions STR83145, IT = 10 A* Limits Min. Typ. Max. – – 1.8 Units V STR84145, IT = 12 A* – 1.6 – V STR83145, VD = 500 V – – 100 µA STR84145, VD = 500 V – 40 – µA Starting Voltage VS VT = 2 V – – 100 V Startup Time Delay tD C2 = 1 µF, VMT1 ≥ 100 V dc 40 – 100 ms DC Switch-Over Voltage VC VDELAY ≤ 1 V 200 205 210 V Temperature Coefficient of Switch-Over Voltage αVC -20°C ≤ TM ≤ +100°C – ±45 – mV/°C Input Current IMT1 Voltage-doubler mode, VMT1 = 195 V – – 10 mA Full-bridge mode, VMT1 = 400 V – – 6.5 mA – – 7.0 V – 15 – kHz 2.0 – 15 V – – 1.8 °C/W Delay Terminal Voltage V DELAY Triac Gate-Drive Osc. Freq. fo Vgate ref. MT1, VMT1 = 100 V Latch Reset Voltage VR VGATE = 400 mV Thermal Resistance RθJM FET channel to mounting surface 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 θ1 + θ2 ≈ 360° 10 AVERAGE ON-STATE POWER LOSS in WATTS 205 200 θ2 8 θ1 6 4 2 0 0 20 60 40 80 0 100 2 FRAME TEMPERATURE in °C 4 6 STATIC ON-STATE CURRENT in AMPERES 8 10 Dwg. GK-013 Dwg. GK-012 40 40 30 30 dc 20 20 FO 10 10 VMT1 = 100 V 0 -25 0 +25 +50 +75 +100 AMBIENT TEMPERATURE in °C TRIAC GATE-DRIVE OSCILLATOR FREQUENCY in kHz -20 TRIAC GATE-DRIVE DUTY CYCLE in % DC SWITCH-OVER VOLTAGE in VOLTS 210 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. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 ™ STR83145 AND STR84145 LATCHED, UNIVERSAL INPUT-VOLTAGE SWITCHES TYPICAL APPLICATION 85–265 V rms -t ° RBV SERIES 240–373 V peak R1 + C3 RM11C C4 4 + 3 2 C1 + + 1 + + + C2 5 Dwg. EK-007 C1 C2 C3 C4 R1 = 4.7 µF, 400 V = 1 µF, 50 V = 0.047 µF, 50 V = 0.047 µF, 250 V = 4.7 Ω 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 µF 3000 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. 1000 300 TM= 25°C 100 30 0.3 1.0 3.0 C2 CAPACITANCE in µF 10 30 Dwg. GK-011 STR83145 AND STR84145 LATCHED, UNIVERSAL INPUT-VOLTAGE SWITCHES Dimensions in Inches (for reference only) 0.126 Ø 0.701 ±0.004 ±0.012 T M REF. 0.177 ±0.008 0.197 –0.040 1.417 +0.060 0.079 0.157 ±0.004 ±0.004 0.906 ±0.012 0.866 ±0.012 0.276 ±0.008 ±0.012 1.102 REF. 0.039 ±0.004 0.177 ±0.020 1 5 +0.008 0.024 –0.004 0.150 0.177 ±0.004 ±0.020 0.100 ±0.004 Dwg. MK-001-5 in 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®. 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" ø –0 25 mm 0.98" NOTES: Dwg. MK-004 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 ™ STR83145 AND STR84145 LATCHED, UNIVERSAL INPUT-VOLTAGE SWITCHES Dimensions in Millimeters (controlling dimensions) 4.5 T M REF. ±0.2 –1.0 36.0 +1.5 2.0 ±0.3 23.0 22.0 ±0.3 7.0 ±0.3 28.0 ±0.2 ±0.1 ±0.3 5.0 17.8 ±0.1 REF. 3.2 Ø 4.0 1 4.5 1.0 ±0.1 ±0.5 ±0.1 5 0.6 +0.2 –0.1 3.81 4.5 ±0.1 ±0.5 2.54 ±0.1 Dwg. MK-001-5 mm 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®. 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" ø –0 25 mm 0.98" NOTES: Dwg. MK-004 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 ™