Device and method for multi-channel calibration and verification of multi-energy-saving power management IC

Abstract

The invention provides a multichannel calibration and verification device and method for multiple sections of electric-quantity management ICs. The method mainly controls a plurality of channel test boards through a main control board to test the multiple sections of electric-quantity management ICs and in a test process, a localized closed-loop correction method is adopted to calibrate voltage and current precision of the multiple sections of electric-quantity management ICs. Moreover, through adoption of a channel self-detection module, precision calibration is carried out on cell boards and current boards of the channels of the device so that precision calibration of a voltage and current reference source of the device is realized and stability of the reference source of the device is ensured. The method also uses a channel combination module according to practical needs to combine the plurality of channels into large channels so as to meet test demands of the multiple sections of electric-quantity management ICs. The method uses a method of using the plurality of channels to carry out parallel tests simultaneously so that test efficiency of the multiple sections of electric-quantity management ICs is improved, expandability of the multichannel calibration and verification device is strengthened, demands that users configure the channels flexibly according to practical conditions can be met and user use cost is reduced.

Description

technical field [0001] The invention relates to a calibration and verification method, in particular to a multi-channel calibration and verification device and method for multi-energy-saving power management ICs. Background technique [0002] With the increasing application of multi-cell power management products, the calibration and verification methods and equipment for multi-cell power management products have also been extensively studied. The traditional calibration and verification of multi-cell products is based on the Renesas power management IC (integrated circuit ) on the basis of using a pneumatic method to correct the voltage and current accuracy of the product. This method uses a manual welding fixture to conduct the product, and realizes the Renesas power management product through a single channel in a purely manual way (applied to a certain multi-energy-saving Managed products), however, this method is subject to Renesas, and the purely manual single-channel ...

AI Technical Summary

Problems solved by technology

[0002] With the increasing application of multi-cell power management products, the calibration and verification methods and equipment for multi-cell power management products have also been extensively studied. The traditional calibration and verification of multi-cell products is based on the Renesas power management IC (integrated circuit ) on the basis of using a pneumatic method to correct the voltage and current accuracy of the product. This method uses a manual welding fixture to conduct the product, and realizes the Renesas power management product through a single channel in a purely manual way (applied to a certain multi-energy-saving Managed products), however, this method is subject to Renesas, and the purely manual single-channel implementation makes this method inefficient, has large limitations, poor scalability, and this method also has high input costs. The overall test stability is poor, the error rate of abnormal programming is high, and the quality and safety factor is low.

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