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TOP250 Datasheet(PDF) 1 Page - Guangdong Kexin Industrial Co.,Ltd |
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TOP250 Datasheet(HTML) 1 Page - Guangdong Kexin Industrial Co.,Ltd |
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1 / 6 page  www.kexin.com.cn 1 SMD Type Integrate Circuit S S S G D D D D TOPSwitch -GX Family Extended Power, Design Flexible, EcoSmart,Integrated Off-line Switcher TOP250 ■ Features ● Extended power range to 290 W ● Features eliminate or reduce cost of external components ● Fully integrated soft-start for minimum stress/overshoot ● Externally programmable accurate current limit ● Wider duty cycle for more power, smaller input capacitor ● Line under-voltage (UV) detection: no turn off glitches ● Line overvoltage (OV) shutdown extends line surge limit ● Line feed forward with maximum duty cycle (DCMAX) reduction rejects line ripple and limits DCMAX at high line ● Frequency jittering reduces EMI and EMI filtering costs ● Regulates to zero load without dummy loading ● 132 kHz frequency reduces transformer/power supply size ● Half frequency option in Y/R/F packages for video applications ● Hysteretic thermal shutdown for automatic fault recovery ● Large thermal hysteresis prevents PC board overheating ■ Absolute Maximum Ratings Ta = 25℃ Parameter Symbol Rating Unit DRAIN Voltage VD -0.3 to 700 V DRAIN Peak Current ID 10.08 A CONTROL Voltage VCON - 0.3 V to 9 V CONTROL Current ICON 100 mA Thermal Resistance Junction-Ambient RθJA 45 ℃/W Junction Operating Temperature Tj -40 to 150 ℃ Storage Temperature Tstg -65 to 150 ℃ Functional Block Diagram ■ PI-2631-061200 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) MULTI- FUNCTION (M) - + 5.8 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 M S Control S S D S |
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Descripción similar - TOP250 |
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