TK75002DIMG TOKO [TOKO, Inc], TK75002DIMG Datasheet
TK75002DIMG
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TK75002DIMG Summary of contents
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FEATURES Eliminates Opto-coupler from Feedback Loop Replaces TL431 and Eliminates Parasitic Zero Pulse Transformer Driver Same Transformer for Any Output Voltage Peak Current Controlled Automatic Volt-Second Balancing Self-running Oscillator Hi-performance Op-amp & Bandgap Reference Functionally Integrated & Simplified 5-pin Design ...
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TK75002 ABSOLUTE MAXIMUM RATINGS Supply Voltage ........................................................... 7 V Power Dissipation (Note 1) ................................ 825 mW Storage Temperature Range ................... -55 to +150 C Operating Temperature Range ...................-20 to +70 C TK75002 ELECTRICAL CHARACTERISTICS Test conditions ...
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TYPICAL PERFORMANCE CHARACTERISTICS SUPPLY CURRENT vs. SUPPLY VOLTAGE 12 10 STANDBY 8 6 DEVICE 3.8 4.0 4.1 4 (V) PEAK DRIVE CURRENT THRESHOLD vs. TEMPERATURE 80 70 OVER SUPPLY RANGE -40 ...
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TK75002 The TK75002 can be used in conjunction with either an opto-coupler or a pulse transformer to isolate an error signal developed by its internal op-amp. The op-amp can be externally compensated and features a precision reference voltage at the ...
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V PIN CC This pin is connected to the supply voltage. The operation of the IC is enabled when the supply voltage exceeds 4.1 V, which is the upper threshold of the undervoltage lockout circuit. The operation is disabled when ...
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TK75002 THE PARASITIC ZERO AND HOW IT IS ELIMINATED IN THE TK75002 In a feedback-regulated isolated power supply, isolation is usually provided by an opto-coupler whose photodiode section is connected between the output of the power supply and the output ...
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APPLICATION INFORMATION (CONT 2 COMP - FIGURE 4: ELIMINATING THE Feed-forward OF THE SUPPLY VOLTAGE IN THE TK75002 ISOLATION WITH PULSE TRANSFORMER Figure 5 shows an application where the error signal is ...
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TK75002 APPLICATION INFORMATION (CONT.) TEST CIRCUIT EXAMPLE This simple circuit shown in Figure 7 is designed to allow the user to probe and observe the characteristic performance and behavior of either a TK75001 or a TK75003 operating with a TK75002. ...
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APPLICATION INFORMATION (CONT.) V CC1 V CC2 DRV GND NC TK75002 INV 33 k GND2 January 1999 TOKO, Inc 0.1 µF NC COMP 3 3.9 k FIGURE 7: TEST CIRCUIT ...
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TK75002 DIP 9.5 e 2.54 0.46 Dimensions are shown in millimeters Tolerance: x.x = 0.2 mm (unless otherwise specified) TOKO AMERICA REGIONAL OFFICES Midwest Regional Office Western Regional Office Toko America, Inc. Toko America, Inc. 1250 ...