DC/DC regulators maximise battery capacity, replace 78xx linears

December 09, 2015 // By Graham Prophet
The extended 9V-48V input range of Recom R-78HB switching regulators is configured for use with battery-powered equipment, and allows the powered device to operate further into the battery’s discharge region.

Allowing appliances to run for longer from a standard 12V, 24V or 36V battery, they make use of all of the battery’s stored energy. As well as their super-wide input range, the R-78HB regulators also maintain high efficiency of up to 93%, with quiescent current of only 5 mA maximum they can run heatsink-free to save cost, size and complexity. With short-circuit protection, input filter and a protective diode for powering highly capacitive loads built in, the modules are self-contained and require no additional external components.

Two versions are available; the 5.0V and 12V single output. The R-78HB5.0-0.5/W and R-78HB12-0.5/W are suitable for supplying up to 0.5A to a wide variety of industrial or aerospace applications or to provide an auxiliary constant voltage from a constant-current LED driver.

The R-78HB series is certified according to IEC/EN-60950-1 general safety and EN55022 Class B EMC standards as well as the EN61000-4-2 ESD-standard. The modules are packaged as 12.1 x 9.7 x 24.0 mm SIP3 wired devices that enable the direct replacement of traditional 78xx linear regulators.

In the UK, from Dengrove Electronic Components; www.dengrove.com

Recom; www.recom-power.com