The AL17052 from Diodes Incorporated is a non-isolated buck converter with an integrated 700 V MOSFET which produces a maximum output current of 50 mA at 5 V from a universal mains input-voltage range of 85 V to 300 V ac.
Suitable for the power supply of industrial control systems, IoT devices and home appliances, the converter offers fast start-up in less than 8 ms to give better system response time.
The AL17052 provides outstanding dynamic performance and load regulation without the use of an optocoupler. Low standby power consumption of 10 mW means that the AL17052 can be used in IoT devices which need to maintain always-on connectivity, even when not in active use.
Conversion efficiency is 60% when stepping down a rectified mains voltage to 5 V with the output at 50 mA. Efficiency is 50% with a 10 mA light load.
With an on-chip 700 V MOSFET, the AL17052 enables the development of integrated power supplies with a streamlined bill-of-materials and a compact board footprint. The MOSFET operates with a small 330 µH inductor.
Built-in protection features include:
Part Number: AL17052EV1
This demonstration board uses the AL17052, a buck converter IC operating from a universal mains input voltage, to build a cost-effective solution for high-voltage buck converter applications. The AL17052 integrates a 700V MOSFET and can work with a single-winding inductor and very few external components to provide an accurate constant-voltage output and good dynamic performance.
Key features:
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