SOLDERING TYPE POWER SUPPLIES WITH BOOST CONVERTER TAP CIRCUITS

Abstract

Examples of disclosed solder-type power supplies include: a boost converter circuit configured to increase a DC supply voltage to supply an intermediate voltage to an intermediate DC bus; a buck converter circuit configured to convert the intermediate voltage to solder-type output power; a boost shunt circuit configured to selectively bypass the boost converter circuit; and control circuits configured to: control the buck converter circuit to convert power from the intermediate DC bus to solder-type power; in response to the determination that a current from the solder-type power is less than a threshold output current, disable the boost shunt circuit and enable the boost converter circuit;and in response to the determination that the welding-type power current is at least a target current and / or the determination that a welding-type power voltage is less than a threshold output voltage, control the boost converter bypass circuit to divert the boost converter circuit.;