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GaN Systems GS66516T | Demoboard GS665BTP-REF
High Efficiency CCM Bridgeless Totem Pole PFC Design using GaN E-HEMT
Overview
| Topology | Power Factor Correction |
| Input voltage | 176-264 V |
| Output 1 | 400 V / 7.5 A |
| IC revision | 170905 |
Description
The designed PFC evaluation board consists of three major parts. They are the PFC controller daughter board, GS66516T half-bridge daughter board, and the mother board. The PFC control chip is the UCD3138 IC chip from Texas Instruments. The GS66516T devices from GaN Systems are chosen for the fast GaN E-HEMT [3]. The IXFH80N65X2 is chosen for the Si MOSFET switches. The system block diagram is shown in Figure 3.2. The mother board consists of EMI filter, start up circuit, line frequency Si MOSFETs and their gate drive circuits, and voltage and current sensing circuits. The PFC controller daughter board requires 3.3-V input and it includes current, input line voltage and output voltage sampling pins as inputs. The outputs are 4 PWM pins, in which 2 of them are applied to the GaN half bridge and the other 2 are applied to the line frequency Si MOSFETs.
Features
- Ultra-low FOM Island Technology® die
- Low inductance GaNPX® package
- Easy gate drive requirements (0 V to 6 V)
- Transient tolerant gate drive (-20 / +10 V )
- Very high switching frequency (> 100 MHz)
- Fast and controllable fall and rise times
- Reverse current capability
- Zero reverse recovery loss
- Small 9 x 7.6 mm2 PCB footprint
- Dual gate pads for optimal board layout
- RoHS 6 compliant
Typical applications
- High efficiency power conversion / Uninterruptable Power Supplies
- Industrial Motor Drives
- Solar and Wind Power
- Fast Battery Charging
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Safety Class | dV/dt(V/µs) | DF @ 1 kHz(%) | RISO | Pitch(mm) | Packaging | IR(A) | L(mH) | RDC max.(mΩ) | VR(V (AC)) | VT(V (AC)) | Material | L(mm) | W(mm) | H(mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WCAP-FTX2 Film Capacitors, Across the mains, 1 µF | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-FTX2 Film Capacitors | Capacitance1 µF | Safety ClassX2 | Rate of Voltage Rise170 V/µs | Dissipation Factor0.1 % | Insulation Resistance10 GΩ | Pitch22.5 mm | PackagingCarton | – | – | – | Rated Voltage275 V (AC) | – | – | Length26 mm | Width11 mm | Height20 mm | MountBoxed THT | ||||
 | WE-CMBNC Common Mode Power Line Choke Nanocrystalline, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CMBNC Common Mode Power Line Choke Nanocrystalline | – | – | – | – | – | – | – | Rated Current20 A | Inductance1 mH | DC Resistance2.4 mΩ | Rated Voltage300 V (AC) | Insulation Test Voltage2100 V (AC) | MaterialNanocrystalline | Length30 mm | Width19 mm | Height28 mm | MountTHT |