US 9,812,957 B2
DC/DC converter and method of driving DC/DC converter
Jiangbin Zhu, Beijing (CN)
Assigned to THOMSON LICENSING, Issy les Moulineaux (FR)
Appl. No. 15/300,041
Filed by THOMSON LICENSING, Issy les Moulineaux (FR)
PCT Filed Mar. 28, 2014, PCT No. PCT/CN2014/074311
§ 371(c)(1), (2) Date Sep. 28, 2016,
PCT Pub. No. WO2015/143721, PCT Pub. Date Oct. 1, 2015.
Prior Publication US 2017/0155318 A1, Jun. 1, 2017
Int. Cl. H02M 3/156 (2006.01); H02M 1/32 (2007.01)
CPC H02M 3/156 (2013.01) [H02M 1/32 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A DC/DC converter, comprising:
a voltage conversion unit having an input node to receive an input voltage and an output node to output an output voltage, the voltage conversion unit configured to convert the input voltage to the output voltage to output the output voltage from the output node, wherein the input voltage is higher than the output voltage;
an electrical energy storage unit including a first electrode to be a positive electrode and a second electrode to be a negative electrode, the first electrode electrically connected to the input node of the voltage conversion converter; and
a switching unit electrically connected to the second electrode of the electrical energy storage unit, the switching unit configured to electrically connect the second electrode of the electrical energy storage unit to one of ground and the output node of the voltage conversion unit alternatively, the switching unit configured to connect the second electrode of the electrical storage unit to the output node in order to provide a voltage equaling the output voltage plus a voltage of the electrical energy storage unit to the input node when the input voltage is lower than a threshold voltage.