Step-down DC-DC conversion circuit for electric vehicle
A DC-DC and conversion circuit technology, applied in the field of DC power supply for electric vehicles, can solve the problems of increasing the vehicle's unloaded weight, increasing battery purchase and replacement costs, and large battery installation space
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[0026] Such as figure 1 As shown, the step-down DC-DC conversion circuit for electric vehicles of the present invention is provided with an input voltage value display circuit, and the input voltage value display circuit includes data latch one U1, data latch two U2 and data latch three U3, the data input terminals of data latch one U1, data latch two U2 and data latch three U3 are respectively connected to the PB0, PB1 to PB7 terminals of the CPU, data latch one U1, data latch two The data output terminals of U2 and data latch 3 U3 are respectively connected to the input voltage value display digital tube, the chip selection input terminal of data latch 1 U1 is connected to the PA0 port of the CPU, and the chip selection input of data latch 2 U2 The end is connected with the PA1 port of the CPU, and the chip select input end of the data latch U3 is connected with the PA2 port of the CPU.
[0027] Such as figure 2 As shown, the step-down DC-DC conversion circuit for electri...
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