STMicroelectronics STEVAL-A6986IV3 Evaluation Board Based on A6986I
STMicroelectronics STEVAL-A6986IV3 Evaluation Board Based on A6986I is designed for isolated applications with an iso-buck architecture. The STMicroelectronics STEVAL-A6986IV3 board utilizes an inverting buck-boost topology at the primary side, known as isobuck-boost. This configuration offers higher deliverable power and optimizes transformer design compared to a standard buck. The device accepts input voltages up to 28V, with a negative primary output voltage due to the inverting buck-boost conversion. The secondary side includes four independent windings, each supplying a gate driver with precise post-regulation.
Features
- Designed for isobuck-boost topology
- 4V to 28V operating input voltage
- Four isolated outputs with regulated dual voltage
- 60mA typical for the outputs dedicated to high-side drivers
- 180mA typical for the output dedicated to the low-side drivers
- 18V/ - 5V or 15V/ - 8V selectable isolated voltage pairs
- Primary output voltage regulation
- No optocoupler required
- Secondary post-regulation dedicated to each output with <±1% accuracy
- 250kHz operating switching frequency
- Peak and reverse current protections
- Protection against overcurrent and short circuit events at the isolated outputs
- Thermal protection
Applications
- Power supplies and converters
- DC-DC converters
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Published: 2024-05-22
| Updated: 2024-05-31