tk75020 Toko Inc., tk75020 Datasheet
tk75020
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tk75020 Summary of contents
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... An internal zero-voltage detector monitors the voltage across the MOSFET and ensures that the turn-on will only take place under zero-voltage conditions. A unique overdissipation protection prevents the overheating of the power MOSFET in case the zero-voltage switching is lost. The TK75020 is available in a 14-lead surface mount package current limit, off(max) ...
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... All Pins Except OFF(MAX) ODP and EN (Low Impedance Source) ................... SS ref ODP Pins .......................... OFF(MAX Pin ...................................................................... 16 V Power Dissipation (Note 1) ................................ 500 mW TK75020 ELECTRICAL CHARACTERISTICS Test conditions Temperature Range, Typical numbers apply ...
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... TK75020 ELECTRICAL CHARACTERISTICS (CONT.) Test conditions Temperature Range, Typical numbers apply ...
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... TK75020 TK75020 ELECTRICAL CHARACTERISTICS (CONT.) Test conditions Temperature Range, Typical numbers apply ...
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... DRIVE S DRV Q Q LATCH STAND-BY GATE DISCHARGE CURRENT LIMITER C L CMP 0. LATCH REF ODP CUR SRC BIAS HIGH: DRV ENABLED TK75020 D 1 ZVD DRV C L ODP OVP REF Page 5 ...
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... TK75020 SUPPLY VOLTAGE PIN ( This pin is connected to the supply voltage. The IC begins normal operation when two conditions are met: 1) the V voltage exceeds 5.6 V and 2) the voltage of the enable pin exceeds 2.2 V. Operation ceases and the IC goes into a UVLO mode when the V voltage drops below 5.3 V. ...
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... ON and Q into a second mirror formed via Q when the current switch latch 7 8 and transistor Q 1 TK75020 ) INV / SS) ON OUT voltage exceeds the /SS pin and Q . The OFF(MAX) ...
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... TK75020 mirrored by the transistors Q and Q 9 timing capacitor. The incoming mirror current is diverted from the mirror with transistor Q set. OVERDISSIPATION PROTECTION PIN (ODP) The ODP pin is used to realize a protection against overdissipation of the power MOSFET due to the loss or absence of zero-voltage switching (ZVS). (ZVS can be lost if the load or the input voltage changes too much ...
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... OPERATION WITHOUT ZVD January 1999 TOKO, Inc. APPLICATION INFORMATION CLAMP 3 1 LATCH Q DRV LATCH Q 2 ODP 0 CMP7 DRV ODP LATCH 3.0 V 1.0 V TON / S.S TK75020 CYCLE-BY-CYCLE CURRENT LIMIT 2 OVERDISSIPATION PROTECTION 0 0 SENSE 3.0 V 1.0 V Page 9 ...
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... TK75020 APPLICATION INFORMATION (CONT 100 µ (Note 1) Gen. Note not required avalanche rated FET 2 1 Gen. Note: Part #CTX01-13154 (Call Toko Technical Support (719) 528-2200). ...
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... Mill Plain Road Danbury, CT 06811 Tel: (203) 748-6871 Fax: (203) 797-1223 IC-122-TK75020 0798O0.0K TK75020 Marking Information Marking TK75020 75020 Semiconductor Technical Support Toko Design Center 4755 Forge Road Colorado Springs, CO 80907 Tel: (719) 528-2200 Fax: (719) 528-2375 Page 11 Printed in the USA ...