The invention relates to a
current sensor chip packaging structure and a packaging method. The
current sensor chip packaging structure comprises a
bus frame and a
chip which are packaged through a plastic
package body, the side, provided with the chip bonding pad, of the chip is defined as the front face of the chip, only one side of the front face is configured to be opposite to the back face of the
bus frame, the chip bonding pad is arranged on the other side, extending out of the
bus frame, of the front face, and a sensor element is arranged on the side, right opposite to the bus frame, of the front face of the chip. A gap between the chip and the bus frame is provided with an
isolation layer, and the front surface is connected to the back surface of the bus frame through the
isolation layer. According to the
current sensor chip packaging structure and the packaging method, the front surface of the chip is connected to the back surface of the bus frame through the
isolation layer, and the sensor element is arranged at the position opposite to the front surface of the chip, so that the distance between the sensor element and the bus frame is minimized, and the reliability of the current sensor chip is improved by minimizing the distance between the sensor element and the bus frame. Sensitivity and
measurement precision of the sensor are remarkably improved, and the problems of reduction of isolation
voltage endurance capability and process fluctuation are avoided.