Murata 5.7kV Isolated 1W SMD Gate Drive DC-DC Converter (MGJ1 Series)

1. Core Functions & Main Purpose

It converts 12V DC input into two isolated power supplies of +15V / -5V, specially designed to supply power for the gate drive circuits of power semiconductors (MOSFET / IGBT / SiC).

• Provide independent, isolated positive and negative driving voltage for high-side and low-side power transistors.

• Solve the floating power supply problem of high-side circuits.

• Improve switching speed, reduce power loss and prevent false triggering.

2. Application Scope (Typical Scenarios)

• Industrial Drive: Motor drivers, servo amplifiers, frequency converters (IGBT / SiC bridge arms)

• Power Inversion: Photovoltaic inverters, energy storage PCS, UPS (full-bridge / half-bridge topology)

• Automotive Electronics: On-board OBC, DC-DC fast charging, motor controllers (SiC devices)

• Medical Equipment: High-voltage isolated power supply, ultrasonic / laser drive (compliant with 2 MOPP insulation requirements)

• Others: High-voltage isolated analog circuits, floating instrument power supply

3. Key Parameters

• Input: 12V DC (9–15V wide voltage range)

• Output: +15V / -5V (dual isolated channels)

• Power Rating: 1W (approx. 50mA per channel)

• Isolation: 5.7kV DC (reinforced insulation, UL62368-1 compliant)

• Package: SMD surface mount, reflow solderable

• Operating Temperature: -40℃ ～ +105℃ (industrial grade)

Summary

Murata MGJ1D121505VMC is a high-voltage isolated power module with 12V input to ±15V/-5V output. It is dedicated to the gate drive of MOSFET, IGBT and SiC devices, mainly applied in industrial drive, power inversion and automotive scenarios.