Rohm adds eval board for new buck-boost DC-DC converter
Rohm has developed a new evaluation board, the BD83070GWL-EVK-002. It is designed to demonstrate the features of the BD83070GWL DC-DC converter IC, which combines high efficiency with ultra-low current consumption.
The BD83070GWL is a buck-boost DC-DC converter IC developed with the goal of becoming a “definitive low-power eco-device” for electronic devices powered by small batteries and other limited power sources. It achieves high efficiency of up to 97 percent and an ultra-low quiescent current of 2.8 µA.
The newly developed evaluation board was designed to achieve the smallest possible footprint for a buck-boost DC-DC converter, a key requirement for small battery-powered devices. By integrating the BD83070GWL with a coil, capacitors, and a total of only five components, it achieves an ultra-compact mounting area of 12.87 mm2 (3.3 × 3.9 mm).
As a result, it offers a significant advantage in terms of mounting area compared to conventional buck-boost DC-DC IC configurations, including those with built-in coils. Furthermore, as a reference design, design resources such as circuit patterns and the bill of materials (BOM) are publicly available, enabling a smooth transition from evaluation to mass production design.
Application examples include wearable devices, mobile devices, IoT devices, and small battery-powered devices
