DocumentCode :
1373365
Title :
A 2.5 kV Isolation 35 kV/us CMR 250 Mbps Digital Isolator in Standard CMOS With a Small Transformer Driving Technique
Author :
Kaeriyama, Shunichi ; Uchida, Shinichi ; Furumiya, Masayuki ; Okada, Mitsuji ; Maeda, Tadashi ; Mizuno, Masayuki
Author_Institution :
Adv. LSI Syst. Res., Renesas Electron. Corp., Kawasaki, Japan
Volume :
47
Issue :
2
fYear :
2012
Firstpage :
435
Lastpage :
443
Abstract :
A small-size on-chip transformer-based digital isolator for power control systems is proposed. With a proposed pulse generation and detection scheme that enables a 5 V standard CMOS transistor to utilize GHz-band signals, transformer area is reduced to 1/4-1/8 that of conventional transformers. A test chip achieves a 2.5 kV isolation voltage, a 35 kV/us CMR, a 1.6 mA static current and a 250 Mbps data rate, all which are equal to or superior to those of optocouplers or conventional digital isolators. The developed technology greatly reduces the number of chips in power control systems by allowing integration of multiple isolators in a CMOS chip together with microcontrollers or gate drivers. Moreover, the high-speed low-power capability expands the application potential to include isolated serial links, controller area network (CAN), FlexRay, medical devices, displays, sensors, etc.
Keywords :
CMOS digital integrated circuits; driver circuits; invertors; machine control; microcontrollers; motor drives; power control; pulse generators; system-on-chip; transformers; CAN; CMR digital isolator; FlexRay; bit rate 250 Mbit/s; controller area network; gate drivers; high-speed low-power capability; isolated serial links; isolation voltage; medical devices; microcontroller; power control system; pulse detection scheme; pulse generation; small transformer driving technique; small-size on-chip transformer; standard CMOS transistor; static current; voltage 2.5 kV; voltage 5 V; CMOS integrated circuits; Coils; Isolators; Logic gates; Radiation detectors; Receivers; Transmitters; Coupler; gate driver; inverter; ipm; isolator; motor drive; transformer;
fLanguage :
English
Journal_Title :
Solid-State Circuits, IEEE Journal of
Publisher :
ieee
ISSN :
0018-9200
Type :
jour
DOI :
10.1109/JSSC.2011.2170775
Filename :
6075274
Link To Document :
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