Background

The power supply for IGBT driver is an important product line of MORNSUN. With its perfect features, it can meet the requirement of most IGBT drivers. But nowadays, SiC mosfet has replaced IGBT gradually in high voltage and high frequency situations because of its low on-resistance and low leakage current. At the same time, the SiC mosfet driver also has a fast development. MORNSUN released QA01C series power module to meet the requirements of SiC mosfet driver.  

QA01C Series Introduction

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QA01C is a special dual isolation DC/DC Converter for SiC mosfet driver. It adopts the mode of mutual connection after two independent outputs makes it better power up SiC mosfet's turn-on and turn-off. Meanwhile, it has output short-circuit protection, which can widely use in frequency transformer / AC servo drive system / welding equipment / UPS.  

Features:

• Isolation: 3500VAC;
• Capacitive load: 220uF;
• Isolation capacitance: 3.5pF;
• Operation temperature: -40~105 °C;
• Efficiency up to: 83%;
• SIP package;
• Continuous short-circuit protection;  

Application

SiC mosfet driver can receive asymmetric positive driving voltage of 20V and turn off voltage bias -4V from QA01C. In order to prevent the damage to the grid electrode, adding D2(zener diode) & D3(zener diode) is necessary to absorb the peak voltage. In addition, we recommend opto-coupler isolation to achieve the signal isolation between control circuit and main power circuit, but the opto-coupler must has high CMRR(30KV/us) /high isolation voltage/ultra-short delay time to meet the characteristic high frequency of SiC mosfet.

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Australia&New Zealand Distributor
DLPC Pty Ltd
Tel: 07 3823 4844 Fax: 07 3823 4866, Email: keith@dlpc.com.au, Web: www.dlpc.com.au

Victorian Distributor
Fairmont Marketing
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Auckland-New Zealand Distributor
Fero Ltd
Tel: 64 9258 5384 Fax: 64 9270 0113, Email: Tasi.samu@Fero.co.nz, Web: www.fero.co.nz