High Voltage Coil Current Sensor for DC-DC Converters Employing DDCC

被引：0

作者：

Drinovsky, Martin ^{[1
,2
]}

Hospodka, Jiri ^{[1
]}

机构：

[1] Czech Tech Univ, Dept Circuit Theory, Tech 2, Prague 16627, Czech Republic

[2] STMicroelect Design & Applicat Sro, Prague 18600, Czech Republic

来源：

RADIOENGINEERING | 2015年 / 24卷 / 04期

关键词：

Current sensor; current conveyor; DDCC; DC-DC converter;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Current sensor is an integral part of every switching converter. It is used for over-current protection, regulation and in case of multiphase converters for balancing. A new high voltage current sensor for coil-based current sensing in DC-DC converters is presented. The sensor employs DDCC with high voltage input stage and gain trimming. The circuit has been simulated and implemented in 0.35 mu m BCD technology as part of a multiphase DC-DC converter where its function has been verified. The circuit is able to sustain common mode voltage on the input up to 40 V, it occupies 0.387 x 0.345 mm(2) and consumes 3.2 mW typically.

引用

页码：988 / 992

页数：5

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