A DC-isolated gate drive IC with drive-by-microwave technology for power switching devices

Nagai, Shigekazu; Negoro, Noboru; Fukuda, Takahiro; Otsuka, Nobuyuki; Sakai, Hiroyuki; Ueda, T.; Tanaka, Tsuyoshi; Ueda, Daisuke

doi:10.1109/isscc.2012.6177066

Cited by 36 publications

(16 citation statements)

References 5 publications

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“…[n order to achieve a cost reduction and a downsizing of the [3][4][5]. It supplies power using a microwave from a bottom layer of a sapphire substrate to a top layer.…”

Section: Imentioning

confidence: 99%

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Isolation system with wireless power transfer for multiple gate driver supplies of a medium voltage inverter

Kusaka

Orikawa

Itoh

et al. 2014

2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA)

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In this paper, a multiple wireless power transfer system for multiple gate driver supplies of a medium voltage inverter is developed. The proposed isolation system achieves a galvanic isolation with an air-gap of 50 mm using a wireless power transfer with magnetic resonance coupling. It easily respects the standard of galvanic isolation, which is established by International electrotechnical commission (lEe). Moreover, the power is supplied from one transmitting board to six gate drivers without a solid magnetic core. In this paper, the isolation system is developed and tested. It is clarified that the isolation system transmits power of not less than 300 mW to each gate drivers beyond an air-gap. However, sum of the output power of the each receiving board are limited up to approximately 3.5 W because of a voltage drop in the equivalent series resistances of the transmission coils.

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“…[n order to achieve a cost reduction and a downsizing of the [3][4][5]. It supplies power using a microwave from a bottom layer of a sapphire substrate to a top layer.…”

Section: Imentioning

confidence: 99%

“…The transmission efficiency expresses the ratio of sum of the received power on the receiving boards to the transmitted power from the transmitting board. Thus, the transmission efficiency llT is calculated by(3). It should be noted that the output impedance of the power supply and the load impedance, which are used for an analysis, are 50 Q. ll r = I S (…”

mentioning

confidence: 99%

Isolation system with wireless power transfer for multiple gate driver supplies of a medium voltage inverter

Kusaka

Orikawa

Itoh

et al. 2014

2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA)

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“…Experimentally fabricated GaNbased IC, named as "Drive-by-Microwave (DbM)" IC, is shown in fig.6. [4]. Present DbM IC can deliver either positive or negative polarity to the gates, as shown in fig.7.…”

Section: Drive-by-microwave (Dbm) Technologymentioning

confidence: 99%

Status Quo and trends of GaN power devices

Ueda

2013

2013 IEEE International Reliability Physics Symposium (IRPS)

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This paper reviews the recently developed technologies for GaN-based power devices which is coming close to the practical application. Experimentally fabricated GaN inverter system attained the world-highest conversion efficiency over 99.3% by using GIT (Gate Injection Transistor). Reliability issues become increasingly essential due to the increase of power density of GaN-based device. Passivation technique is addressed in view of improving the on-resistance as well as suppressing the current collapse. Direct liquid-immersion package is also demonstrated, where junction temperature is drastically reduced in the built-in heat pipe structure.

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“…In order to achieve the cost reduction and downsizing of the isolation system, a single-chip DC-isolated gate drive integrated circuit (IC) has been proposed (8)- (10) . It supplies power using a microwave from the bottom layer of a sapphire substrate to the top layer.…”

Section: Introductionmentioning

confidence: 99%

Galvanic Isolation System with Wireless Power Transfer for Multiple Gate Driver Supplies of a Medium-voltage Inverter

et al. 2016

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In this paper, a gate driver supply, which supplies power to multiple gate drivers, is demonstrated. Robust isolation is required in the gate drive supplies of a medium-voltage inverter in order to drive high-voltage switching devices such as insulated-gate bipolar transistors. The proposed isolation system achieves isolation with transmission coils mounted on printed circuit boards. Furthermore, the isolation system transmits power from one transmitting board to six receiving boards. In the conventional system, the number of receivers is limited to one. In contrast, multiple receivers are acceptable in the proposed system. These characteristics help reduce the of the isolation system for the gate driver supplies.This paper presents the fundamental characteristics of the isolation system. The equivalent circuit of the proposed system can be derived by applying the equivalent circuit of a wireless power transfer system with a repeater coil. In addtion, a design method for the resonance capacitors is mathematically introduced using the equivalent circuit. It is verified that an isolation system with multiple receivers can be designed using the same resonance conditions as an isolation system with a single receiver.Moreover, the isolation system is experimentally demonstrated. It is confirmed that the isolation system transmits power with a maximum efficiency of 46.9% at an output power of 16.6 W beyond an air gap of 50 mm with only printed circuit boards.

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A DC-isolated gate drive IC with drive-by-microwave technology for power switching devices

Cited by 36 publications

References 5 publications

Isolation system with wireless power transfer for multiple gate driver supplies of a medium voltage inverter

Isolation system with wireless power transfer for multiple gate driver supplies of a medium voltage inverter

Status Quo and trends of GaN power devices

Galvanic Isolation System with Wireless Power Transfer for Multiple Gate Driver Supplies of a Medium-voltage Inverter

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