On-chip secondary power supply structure taking band gap reference structure as core

Abstract

The invention belongs to the analog integrated on-chip secondary power supply technology field and especially relates to an on-chip secondary power supply structure taking a band gap reference structure as a core. A band gap reference is taken as a core structure, a band gap reference voltage is amplified to a required secondary power supply voltage through a proportional resistor, and a driving line module is added on the above basis so that a secondary power supply structure with a certain driving capability is obtained. The structure of the circuit is simple, the structure is easy to be transplanted on various technologies, the structure can adapt to various application conditions, a good temperature coefficient can be possessed, and the demand of normal work under an extreme temperature condition can be satisfied.

Description

technical field [0001] The invention belongs to the technical field of analog integrated on-chip secondary power supply, and in particular relates to an on-chip secondary power supply structure with a bandgap reference structure as the core. Background technique [0002] The on-chip secondary power supply technology can realize secondary power supply for drivers or circuits that require an internal secondary power structure. It usually acts on the logic control part, enabling it to transmit logic signals at a lower operating voltage. The secondary power circuit It has become an important component module to increase the operating frequency of the circuit and reduce the heating power during operation, and its performance directly determines the quality of the circuit performance to a certain extent. In the past, the Zener voltage regulator was often used as the core to form a secondary power supply structure, but because the device has high requirements on process parameters ...

AI Technical Summary

Problems solved by technology

In the past, the Zener voltage regulator was often used as the core to form a secondary power supply structure, but because the device has high requirements on process parameters and process stability, and the output voltage varies greatly with temperature, the Zener voltage regulator is used in practical applications. The output voltage of the secondary power supply structure varies greatly between different process batches, and is more sensitive to operating temperature

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