Questions tagged [gan]

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How to implement the design of a bidirectional buck-boost converter?

I need your help in designing a bidirectional buck boost converter with the following requirements: Input voltage: 100V-400V Voltage range: 250V-1.2kV Output current: 40-80A Power dissipation of 24 ...
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3 votes
0 answers
114 views

GaN Vs IGBT performances

I was making some research on GaN and I do not understand why GaN is so reveolutionnary. When I take a look on the following specification RdsOn and Coss (Cds + Cgd), the GaN semiconductor has lower ...
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SPICE Models with >3 Terminals for use in SIMPLIS

I'm trying to convert a GaN FET SPICE model to use in a SIMPLIS schematic. The SPICE model is based on a typical MOSFET model (G-D-S) but also includes the TJ, TC and SS pin, as shown in figure. I've ...
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0 votes
1 answer
70 views

GaN Power transitor said to "reduce EMI"

I have no experience in GaN, I am currently discovering the subject and I was studying a design from Infineon and I found on a GaN power transistor the following benefits: Here is the datasheet: ...
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2 votes
1 answer
244 views

Power MosFET Gate Driver + ESP32 from Source Voltage?

I'm working on an ultra-efficient fixed output half-bridge DC/DC converter. (Where the input is from variable sources of voltage and current like batteries, solar, wind, and also from fixed sources of ...
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2 votes
1 answer
164 views

Limit of resonant converters

I am currently trying to design a converter with GaN technology. The converter needs to regulate a wide range of current and consequently the power goes from ~1kW to ~10kW. I took a look on Texas ...
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1 answer
162 views

Estimating case to ambient thermal resistance when it is not given in the datasheet

I'm trying to estimate the case to ambient thermal resistance of a GaN switching device (specifically the GS66508T device from GaN Systems). The datasheet provides the junction to case thermal ...
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  • 1
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54 views

Wireless power transfer - 6.78 MHz resonant circuit

I work on wireless power transfer. I used (EPC9065: High-Frequency ZVS Class-D Power Amplifier) I have a resonance circuit series-parallel topology work on 6.78 MHz, when I connect the circuit and ...
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2 votes
3 answers
285 views

How suitable are GaN half-bridges for small brushless motor drives (ESCs)?

The drone world uses ESCs (Electronic Speed Controllers) to control brushless DC motors. Typically there are six discrete FETs, a driver IC, and a small MCU to sequence things. Typical currents ...
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0 answers
54 views

Chargers for modern devices, understanding compatibility

When a device (say a modern MacBook charger or GaN charger) lists modes, such as... ...
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  • 105
1 vote
0 answers
57 views

Gallium Nitride SCR/Thyristor?

I have an application that requires switching on a load very fast (1ns or so). There are N-channel / low side GaN MOSFETS. I would really like to switch a load on the high side, which causes problems ...
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2 votes
2 answers
388 views

Why is "GaN tech" so revolutionary for wall chargers?

A big selling point of RAVPower wall chargers is that they use "GaN tech." I assume that's gallium nitride but, anyway, my question is: If that's what their chargers use what do most other wall ...
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  • 131
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1 answer
385 views

DC-AC converter with GaN in Ltspice

I'm simulating a DC-AC SPWM converter in Ltspice with a GaN E-HEMT (https://gansystems.com/gan-transistors/gs66516b/) but I'm having problems because I get the error for the time step to small. This ...
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2 votes
0 answers
207 views

GaN FET short-circuit protection

From Texas Instruments snoaa15, which is an Application Report about overcurrent protection of GaN FETs, in the first page, you can read the following quote: Traditional approaches using current ...
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