Analog load for testing SOC power source

Abstract

The invention discloses an analog load for testing an SOC power source, comprising a current adjustment unit, a delay adjustment unit, and a control module. The extracted current input of the current adjustment unit is connected with the positive electrode of an analog power source, and the current output of the current adjustment unit is connected with the negative electrode of the analog power source. The current control input of the current adjustment unit is connected with the current control output of the control module, and the delay control input of the current adjustment unit is connected with the delay control output of the control module through the delay adjustment unit. Under control of the control module, the current adjustment unit simulates the working current of a simulated load. The power output end of a power source to be tested outputs extracted current to be tested, and the performance of the power source to be tested is tested through a power source test device. The control module makes the extracted current input by the current adjustment unit change linearly through the delay adjustment unit. The analog load can simulate various changes of an SOC load, and realize analog test of the transient and DC load currents of an SOC power source.

Description

technical field [0001] The invention relates to the field of simulation testing of SOC power supplies, in particular to a simulation load for testing SOC power supplies. Background technique [0002] As the integrated circuit design industry becomes more and more prosperous, the structure of integrated circuits becomes more and more complex, and there are more and more systems on a chip (SOC). Correspondingly, the requirements for SOC power supplies are also getting higher and higher; the performance of power management systems The requirements are getting higher and higher, and its power test system is becoming more and more complex. [0003] When the current absorbed by the load jumps, the output voltage of the power management system will instantly deviate from the set value, and it will take a certain period of time to reach a stable output state. This period of time is usually called the load transient recovery time of the power supply, or the transient response time, ...

AI Technical Summary

Problems solved by technology

[0005] However, the simulated load used in the current power supply test can only simulate the magnitude of the load current, and cannot control the transient change time of the simulated load current, and cannot control the rising edge time and falling edge time when the simulated load current changes. , cannot accurately test the transient response performance of the power supply under test

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