STMicroelectronics MasterGaN high power density 600V half-bridge drivers

Key Features

• •  600 V system-in-package integrating half-bridge gate driver and high-voltage power GaN transistors
• •  QFN 9 x 9 x 1 mm package
• •  Reverse current capability
• •  Zero reverse recovery loss
• •  UVLO protection on low-side and high-side
• •  Internal bootstrap diode
• •  Interlocking function
• •  Dedicated pin for shutdown functionality
• •  Accurate internal timing match
• •  3.3 V to 15 V compatible inputs with hysteresis and pull-down
• •  Overtemperature protection
• •  Bill of material reduction
• •  Very compact and simplified layout
• •  Flexible, easy and fast design

SCALABLE PIN COMPATIBLE OFFERINGS

MasterGaN is a family of advanced power system-in-package devices integrating a gate driver and two enhancement mode GaN transistors in asymmetrical half-bridge configuration. The integrated power GaNs have 650 V drain-source blocking voltage and varying RDS(ON) across the family from 150 mΩ up to 450 mΩ. It is available in symmetric and asymmetric configurations. The high side of the embedded gate driver can be easily supplied by the integrated bootstrap diode.

The MasterGaN family features UVLO protection on both the lower and upper driving sections, preventing the power switches from operating in low efficiency or dangerous conditions, and the interlocking function avoids cross-conduction conditions.

The input pins extended range allows easy interfacing with microcontrollers, DSP units or Hall effect sensors.

All devices in this MasterGaN family operate in the industrial temperature range, -40°C to 125°C. They are also pin compatible across the range in a compact 9x9 mm QFN package.

Key Applications

• •  Switch-mode power supplies
• •  Chargers and adapters
• •  High-voltage PFC, DC-DC and DC-AC Converters
• •  UPS Systems
• •  Solar Power

Common power supply topologies for MasterGaN

Here are two common High Voltage Converter topologies for MasterGan:

1.  Active Clamp Flyback:

2.  Resonant LLC:

Evaluation Boards

• •  EVALMASTERGAN*: The EVALMASTERGAN1 boards are easy to use and quick to adapt tools to evaluate the characteristics of MASTERGAN and to quickly create new topologies without the need of complete PCB design. The EVALMASTERGAN* boards provide on-board programmable inputs deadtime generator with a single VCC supply (typ. 6 V). An embedded linear voltage regulator offers 3.3 V rail to supply low voltage logic circuit like microcontrollers or FPGA.


• •  EVALMASTERGAN1
• •  EVALMASTERGAN2
• •  EVALMASTERGAN3
• •  EVALMASTERGAN5
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• •  EVLMG1-250WLLC: This demonstration board is a resonant LLC converter dedicated to any kind of industrial application where minimum size and high efficiency is required, based on MasterGaN1.


• •  High efficiency and compact solution for DC/DC conversion using MasterGaN1
• •  Output voltage: 24 V
• •  Output power up to 250 W
• •  Nominal Input voltage: 400 V +/- 10%
• •  Efficiency: >92%
• •  Outputs protected against short-circuit and overcurrent
• •  Input voltage monitor for correct sequencing as D2D converter, and brownout protection
• •  Board size: 100 x 60 (W x H) mm. Maximum components height: 35 mm
• •  WEEE and RoHS compliant
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