TSR 2 Series, 2A DC/DC Converters TRACO Power TSR 2 Series, 2A DC/DC Converters are highly efficient and features low standby power consumption. The step-down switching regulators offer high efficiency up to 96% on a full load operating at up to +67°C without any heat-sink or forced cooling. Other features include over linear regulators, lower standby current of 2mA, and no requirement of external capacitors. TSR 2 Series, 2A DC/DC converters are an ideal solution for battery powered applications.