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TOP214YAI Datasheet(PDF) 2 Page - Power Integrations, Inc. |
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TOP214YAI Datasheet(HTML) 2 Page - Power Integrations, Inc. |
2 / 16 page TOP200-4/14 D 7/96 2 Figure 2. Functional Block Diagram. Pin Functional Description DRAIN Pin: Output MOSFET drain connection. Provides internal bias current during start-up operation via an internal switched high- voltage current source. Internal current sense point. CONTROL Pin: Error amplifier and feedback current input pin for duty cycle control. Internal shunt regulator connection to provide internal bias current during normal operation. Trigger input for latching shutdown. It is also used as the supply bypass and auto-restart/ compensation capacitor connection point. SOURCE Pin: Output MOSFET source connection. Primary-side circuit common, power return, and reference point. PI-1065A-110194 CONTROL DRAIN SOURCE (TAB) TO-220/3 (YO3A) Figure 3. Pin Configuration. PI-1746-011796 SHUTDOWN/ AUTO-RESTART PWM COMPARATOR CLOCK SAW OSCILLATOR CONTROLLED TURN-ON GATE DRIVER INTERNAL SUPPLY 5.7 V 4.7 V SOURCE S R Q Q DMAX - + CONTROL - + 5.7 V IFB RE ZC VC MINIMUM ON-TIME DELAY + - VI LIMIT LEADING EDGE BLANKING POWER-UP RESET R S Q Q ÷ 8 0 1 THERMAL SHUTDOWN EXTERNALLY TRIGGERED SHUTDOWN SHUNT REGULATOR/ ERROR AMPLIFIER + - DRAIN |
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