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TOP245YN：TOP Switch-GX Family, Pin Diagram, Circuit ...

2024/2/20 16:56:56

TOP245YN is the TOPSwitch GX series with extended power, flexible design, EcoSmart, and integrated offline switches. TOPSwitch GX uses the same validated topology as TOPSwitch, integrating high-voltage power MOSFETs, PWM control, fault protection, and other functions economically and efficiently. The control circuit is integrated onto a single CMOS chip. Integrated with many new features, it can reduce system costs and improve design flexibility, performance, and energy efficiency.

~The functions of the top 245yn power chip pins are as follows:
1. Vfb: Feedback pin, used to connect feedback resistors and adjust output voltage.
2. Vin: Input voltage pin, which receives input voltage and can reduce input resistance when power is interrupted.
3. Gnd: Ground pin, used for grounding the chip and external circuits.
4. Vout: Output voltage pin, connect output filtering capacitor, filter and output voltage.
5. Drain: Power switch pin that controls the switching status of MOSFET tubes.
6. Source: Power switch pin, connected to the source of the MOSFET to provide a current loop.
7. Control: Control pin, connect an external resistor to set the switching frequency.

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