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TOP245G Datenblatt(PDF) 3 Page - Power Integrations, Inc. |
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TOP245G Datenblatt(HTML) 3 Page - Power Integrations, Inc. |
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3 / 54 page ![]() Rev. R 10/20 3 TOP242-250 www.power.com PI-2639-031915 SHUTDOWN/ AUTO-RESTART PWM COMPARATOR CLOCK SAW HALF FREQ. CONTROLLED TURN-ON GATE DRIVER CURRENT LIMIT COMPARATOR INTERNAL UV COMPARATOR INTERNAL SUPPLY 5.8 V 4.8 V SOURCE (S) S R Q DMAX STOP SOFT- START - + CONTROL (C) LINE-SENSE (L) EXTERNAL CURRENT LIMIT (X) FREQUENCY (F) - + 5.8 V 1 V IFB RE ZC VC + - LEADING EDGE BLANKING ÷ 8 1 HYSTERETIC THERMAL SHUTDOWN SHUNT REGULATOR/ ERROR AMPLIFIER + - DRAIN (D) ON/OFF SOFT START DCMAX VBG DCMAX VBG + VT 0 OV/UV VI (LIMIT) CURRENT LIMIT ADJUST LINE SENSE SOFT START LIGHT LOAD FREQUENCY REDUCTION STOP LOGIC OSCILLATOR WITH JITTER MULTI- FUNCTION (M) PI-2641-031915 SHUTDOWN/ AUTO-RESTART PWM COMPARATOR CLOCK SAW CONTROLLED TURN-ON GATE DRIVER CURRENT LIMIT COMPARATOR INTERNAL UV COMPARATOR INTERNAL SUPPLY 5.8 V 4.8 V SOURCE (S) S R Q DMAX STOP SOFT- START - + CONTROL (C) - + 5.8 V IFB RE ZC VC + - LEADING EDGE BLANKING ÷ 8 1 HYSTERETIC THERMAL SHUTDOWN SHUNT REGULATOR/ ERROR AMPLIFIER + - DRAIN (D) DCMAX 0 SOFT START LIGHT LOAD FREQUENCY REDUCTION STOP LOGIC OSCILLATOR WITH JITTER ON/OFF SOFT START DCMAX VBG VBG + VT OV/UV VI (LIMIT) CURRENT LIMIT ADJUST LINE SENSE Figure 2a. Functional Block Diagram (Y, R or F Package). Figure 2b. Functional Block Diagram (P or G Package). |
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