A new high-voltage level-shifting circuit for half-bridge power ICs

In order to reduce the chip area and improve the reliability of HVICs, a new high-voltage level-shifting circuit with an integrated low-voltage power supply, two PMOS active resistors and a current mirror is proposed. The integrated low-voltage power supply not only provides energy for the level-shi...

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Bibliographic Details
Published inJournal of semiconductors Vol. 34; no. 10; pp. 155 - 160
Main Author 孔谋夫 陈星弼
Format Journal Article
LanguageEnglish
Published 01.10.2013
Subjects
Circuits
Current mirrors
Devices
Electric circuits
MEDICI
PMOS晶体管
Power supplies
Resistors
Semiconductors
Simulation
创新
半桥
电平转换电路
电源IC
移动电路
高电压
Online AccessGet full text
ISSN1674-4926
DOI10.1088/1674-4926/34/10/105012

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Summary:In order to reduce the chip area and improve the reliability of HVICs, a new high-voltage level-shifting circuit with an integrated low-voltage power supply, two PMOS active resistors and a current mirror is proposed. The integrated low-voltage power supply not only provides energy for the level-shifting circuit and the logic circuit, but also provides voltage signals for the gates and sources of the PMOS active resistors to ensure that they are normally-on. The normally-on PMOS transistors do not, therefore, need to be fabricated in the depletion process. The current mirror ensures that the level-shifting circuit has a constant current, which can reduce the process error of the high-voltage devices of the circuit. Moreover, an improved RS trigger is also proposed to improve the reliability of the circuit. The proposed level-shifting circuit is analyzed and confirmed by simulation with MEDICI, and the simulation results show that the function is achieved well.
Bibliography:Kong Moufu, Chen Xingbi（ State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China）
HVIC; level-shifting; active resistor; current mirror
In order to reduce the chip area and improve the reliability of HVICs, a new high-voltage level-shifting circuit with an integrated low-voltage power supply, two PMOS active resistors and a current mirror is proposed. The integrated low-voltage power supply not only provides energy for the level-shifting circuit and the logic circuit, but also provides voltage signals for the gates and sources of the PMOS active resistors to ensure that they are normally-on. The normally-on PMOS transistors do not, therefore, need to be fabricated in the depletion process. The current mirror ensures that the level-shifting circuit has a constant current, which can reduce the process error of the high-voltage devices of the circuit. Moreover, an improved RS trigger is also proposed to improve the reliability of the circuit. The proposed level-shifting circuit is analyzed and confirmed by simulation with MEDICI, and the simulation results show that the function is achieved well.
11-5781/TN
ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:1674-4926
DOI:10.1088/1674-4926/34/10/105012