Shell switch of DC charging pile The shell switch of...
The component of communication interface chip
It is used to control the switch of power supply, which can achieve fast switching and precise control.
Main component
The function of the error amplifier is to amplify the difference between the feedback voltage (FB pin voltage) and the reference voltage, and then use the signal to control the duty cycle of the PWM output signal to ensure that the output is constant current or constant voltage.
When the temperature is higher than the limit value, the chip stops working to protect the chip from overheating damage.
If the current on the resistor of the current comparator is too large, the output will be reduced until the lower limit threshold is exceeded, and the power chip will have a hiccup phenomenon. This mode can well protect the chip in case of output short circuit, protect the voltage regulator, and once the overcurrent phenomenon is eliminated, the hiccups will be eliminated.
WHEN the power supply is started, it can reduce the surge current, make the output voltage rise slowly, and reduce the influence on the input power supply.
The oscillator is responsible for generating PWM square waves to drive the power MOS tube, using the charge and discharge of the capacitor to form sawtooth waves and the comparator to generate square waves with adjustable duty cycle.
Driver circuit usually contains a large area of MOS tube, responsible for providing high current drive capability.
he function of the start module is to start the chip at the moment of power on, to avoid the situation that the current of all transistors is 0 and the chip cannot be started.
provides overvoltage protection function to prevent damage to electronic equipment caused by abnormal power supply.
DC CHARGING PIlE SERIES
DC charging pile is an efficient charging facility for electric vehicles, which uses direct current (DC) to directly charge the vehicle battery, significantly reducing the charging time. Compared with traditional AC charging piles, DC charging piles are able to provide higher power output and can usually charge an EV to 80% of its capacity in 30 minutes, providing users with a convenient charging experience.
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