产品概要
Key Benefits
描述
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.
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性能一览
- Topology: ZVS Totem Pole PFC + HB LLC with SR
- GaN based power stage
- Digital control based on a single STM32G474 MCU
- Output rated power: 250 W
- Input voltage range: Vin = 115 – 230 Vac
- Peak efficiency: 96 % at full load, 230 Vac
- Power density: >1 W/cm3 (17 W/in3)
- No load consumption: < 150 mW
特别推荐
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | 符合RoHS级别 | WEEE Compliant | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|---|
| STEVAL-250GANCB | Active 产品已量产 | CARD | Industrial | Ecopack2 | Yes | - | - | |
STEVAL-250GANCB
Package:
CARDMaterial Declaration**:
(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系 销售支持。
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Sample & Buy
| Part Number | 供货状态 | Budgetary Price (US$)*/Qty | 从ST订购 | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Supplier | Core Product | Board production status | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| STEVAL-250GANCB | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
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STEVAL-250GANCB Active