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Overview
| Topology | FlyBuck (Double Buck) |
| Input voltage | 4-38 V |
| IC revision | 2.0 |
Description
STEVAL-250GANCB is an AC/DC power adapter consisting of three stages: a totem pole PFC (AC/DC) working in zero voltage switching, variable frequency mode; a resonant half bridge LLC converter (DC-DC), and a synchronous rectification output stage.High-power density is achieved thanks to the GaN switches SGT120R65AL, combined with STGAP2GS GaN driver.The SGT120R65AL will be soon replaced by the new SGT100R70FDC.The solution uses a single microcontroller STM32G474RE to control the PFC and primary side of LLC. The synchronous rectification stage is controlled by the SRK2001 and two parallel STL120N10F8 STripFET F8 power MOSFETs.The totem pole PFC operates in ZVS with variable switching in the range of 35 ÷ 300 kHz, from light load to full load.The LLC implements frequency modulation to regulate the output voltage and operates at variable frequency from 200 to 300 kHz, with a resonance frequency of 227 kHz. The startup phase is performed at high frequency from 500 down to 200 kHz.Thanks to the excellent switching performance of GaN devices at high frequency and the soft switching techniques (ZCS and ZVS) in all stages, a peak efficiency of 96% was achieved.
Features
Topology: ZVS Totem Pole PFC + HB LLC with SRGaN based power stageDigital control based on a single STM32G474 MCUOutput rated power: 250 WInput voltage range: Vin = 115 – 230 VacPeak efficiency: 96 % at full load, 230 VacPower density: >1 W/cm3 (17 W/in3)No load consumption: < 150 mW
Typical applications
- Power supplies and converters
- Home entartainment
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | VR(V (DC)) | Size | Operating Temperature | Q(%) | DF(%) | RISO | Ceramic Type | L(mm) | W(mm) | H(mm) | Fl(mm) | Packaging | R | Tol. R | PRated(W) | TCR(ppm/ °C) | TCR(ppm/ °C) | VE(V) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WCAP-CSGP MLCCs 50 V(DC), 4.7 pF, ±0.5pF | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance4.7 pF | Capacitance±0.5pF | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Q-Factor494 % | – | Insulation Resistance10 GΩ | Ceramic TypeNP0 Class I | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), 680 pF, ±5% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance680 pF | Capacitance±5% | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Q-Factor1000 % | – | Insulation Resistance10 GΩ | Ceramic TypeNP0 Class I | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), 22 nF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance22 nF | Capacitance±10% | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | – | Dissipation Factor2.5 % | Insulation Resistance10 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), 68 nF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance68 nF | Capacitance±10% | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | – | Dissipation Factor3 % | Insulation Resistance7.4 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), 100 nF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance100 nF | Capacitance±10% | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | – | Dissipation Factor3 % | Insulation Resistance5 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 25 V(DC), 470 nF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 25 V(DC) | Capacitance470 nF | Capacitance±10% | Rated Voltage25 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | – | Dissipation Factor10 % | Insulation Resistance1.1 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | |||||
 | WRIS-RSKS Thick Film Resistors, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWRIS-RSKS Thick Film Resistors | – | – | – | Size0603 | Operating Temperature -55 °C up to +155 °C | – | – | – | – | Length1.6 mm | Width0.8 mm | Height0.45 mm | – | – | Resistance47 kΩ | Resistance±1% | Rated Power0.1 W | Temperature Coefficient of Resistance (min.)-100 ppm/ °C | Temperature Coefficient of Resistance (max.)100 ppm/ °C | Limiting Element Voltage75 V | ||||
| WRIS-RSKS Thick Film Resistors, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWRIS-RSKS Thick Film Resistors | – | – | – | Size0603 | Operating Temperature -55 °C up to +155 °C | – | – | – | – | Length1.6 mm | Width0.8 mm | Height0.45 mm | – | – | Resistance33 kΩ | Resistance±1% | Rated Power0.1 W | Temperature Coefficient of Resistance (min.)-100 ppm/ °C | Temperature Coefficient of Resistance (max.)100 ppm/ °C | Limiting Element Voltage75 V | ||||
| WRIS-RSKS Thick Film Resistors, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWRIS-RSKS Thick Film Resistors | – | – | – | Size0603 | Operating Temperature -55 °C up to +155 °C | – | – | – | – | Length1.6 mm | Width0.8 mm | Height0.45 mm | – | – | Resistance1 MΩ | Resistance±1% | Rated Power0.1 W | Temperature Coefficient of Resistance (min.)-100 ppm/ °C | Temperature Coefficient of Resistance (max.)100 ppm/ °C | Limiting Element Voltage75 V |