A DC to DC voltage converter, comprising: a control circuit; a first voltage converter module (#1) including a bridge (206, 307, 241, 242) configurable through the control circuit to generate, by controlling elements (Q11, Q12, Q13, Q14) of the bridge, a first output voltage selected from two or more different voltages including at least a voltage equal to an alternating current input (Vsec) of the bridge (206, 307, 241, 242) and a voltage equal to two times the alternating current input of the bridge; a second voltage converter module (#2) configurable through the control circuit to generate a second output voltage selected from two or more different voltages; wherein each voltage converter module comprises a transformer (231, 232) configured to generate the alternating current input (Vsec) of the corresponding bridge (206, 307, 241, 242); a common input to the first voltage converter module and the second voltage converter module; and a common output combining the first output voltage from the first voltage converter module and the second output voltage from the second voltage converter module, wherein the inputs of the first voltage converter module and the second voltage converter module are connected in series and their outputs are connected in parallel; wherein the first voltage converter module (#1) has a transformer ratio m1:n1 and the second voltage converter module (#2) has a transformer ratio m2:n2, and wherein the control circuit is configured to configure each of the first voltage converter module (#1) and the second voltage converter module (#2) in at least three modes, so that for a given common input voltage Vin, one of the following eight ratios of Vin to the common output voltage Vo can be provided: Module #1 mode Module #2 mode Ratio Vo/Vin Full-bridge Shorted n 1 /m 1 Shorted Full-bridge n 2 /m 2 Voltage-doubling Shorted 2n 1 /m 1 Shorted Voltage-doubling 2n 2 /m 2 Full-bridge Full-bridge n 1 ∗n 2 /(m 1 ∗n 2 + m 2 ∗n 1) Voltage-doubling Voltage-doubling 2n 1 ∗n 2 /(m 1 ∗n 2 + m 2 ∗n 1) Voltage-doubling Full-bridge 2n 1 ∗n 2 /(m 1 ∗n 2 + 2m 2 ∗n 1) Full-bridge Voltage-doubling 2n 1 ∗n 2 /(2m 1 ∗n 2 + 2m 2 ∗n 1) a control circuit; a first voltage converter module (#1) including a bridge (206, 307, 241, 242) configurable through the control circuit to generate, by controlling elements (Q11, Q12, Q13, Q14) of the bridge, a first output voltage selected from two or more different voltages including at least a voltage equal to an alternating current input (Vsec) of the bridge (206, 307, 241, 242) and a voltage equal to two times the alternating current input of the bridge; a second voltage converter module (#2) configurable through the control circuit to generate a second output voltage selected from two or more different voltages; wherein each voltage converter module comprises a transformer (231, 232) configured to generate the alternating current input (Vsec) of the corresponding bridge (206, 307, 241, 242); a common input to the first voltage converter module and the second voltage converter module; and a common output combining the first output voltage from the first voltage converter module and the second output voltage from the second voltage converter module, wherein the inputs of the first voltage converter module and the second voltage converter module are connected in series and their outputs are connected in parallel; wherein the first voltage converter module (#1) has a transformer ratio m1:n1 and the second voltage converter module (#2) has a transformer ratio m2:n2, and wherein the control circuit is configured to configure each of the first voltage converter module (#1) and the second voltage converter module (#2) in at least three modes, so that for a given common input voltage Vin, one of the following eight ratios of Vin to the common output voltage Vo can be provided: