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公开(公告)号：US20190207519A1
公开(公告)日：2019-07-04
申请号：US15859031
申请日：2017-12-29
Applicant: Texas Instruments Incorporated
Inventor： Sombuddha Chakraborty , Jeffery Lee Nilles , Mervin John , Farzad Sahandiesfanjani , Yogesh Kumar Ramadass
CPC classification number: H02M3/1588 , H02M1/088 , H02M1/32 , H02M1/36 , H02M3/158 , H02M2001/0022 , H02M2001/0048 , H02M2001/0054
Abstract: In described examples, a DC-DC converter provides electrical power. In response to an input voltage falling below a high voltage operation threshold, the converter repeatedly performs a first normal (N) phase and a second N phase. The first N phase includes delivering power through an inductor from the input voltage. The second N phase includes coupling an input terminal of the inductor to a ground. In response to the input voltage rising above a normal operation threshold, the converter performs a first high voltage (HV) phase, then a second HV phase, then a third HV phase, then the second HV phase, and then repeats from the first HV phase. The first HV phase includes delivering power through the inductor from the input voltage and charging a flying capacitor. The second HV phase includes coupling the input terminal of the inductor to the ground. The third HV phase includes delivering power through the inductor by discharging the flying capacitor through the inductor.
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公开(公告)号：US10404175B2
公开(公告)日：2019-09-03
申请号：US15859031
申请日：2017-12-29
Applicant: Texas Instruments Incorporated
Inventor： Sombuddha Chakraborty , Jeffery Lee Nilles , Mervin John , Farzad Sahandiesfanjani , Yogesh Kumar Ramadass
Abstract: In described examples, a DC-DC converter provides electrical power. In response to an input voltage falling below a high voltage operation threshold, the converter repeatedly performs a first normal (N) phase and a second N phase. The first N phase includes delivering power through an inductor from the input voltage. The second N phase includes coupling an input terminal of the inductor to a ground. In response to the input voltage rising above a normal operation threshold, the converter performs a first high voltage (HV) phase, then a second HV phase, then a third HV phase, then the second HV phase, and then repeats from the first HV phase. The first HV phase includes delivering power through the inductor from the input voltage and charging a flying capacitor. The second HV phase includes coupling the input terminal of the inductor to the ground. The third HV phase includes delivering power through the inductor by discharging the flying capacitor through the inductor.
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公开(公告)号：US10050515B1
公开(公告)日：2018-08-14
申请号：US15859088
申请日：2017-12-29
Applicant: Texas Instruments Incorporated
Inventor： Sombuddha Chakraborty , Jeff Lee Nilles , Mervin John
Abstract: In described examples, a DC-DC converter provides electrical power. The converter includes an inductor and a flying capacitor. In response to an input voltage transitioning from below a normal operation threshold to above the threshold, a first transition phase and a second transition phase are repeatedly performed. The first transition phase comprises coupling an input terminal of the inductor to a ground, and the second transition phase comprises delivering power through the inductor by discharging the flying capacitor through the inductor. After the input voltage is above the normal operation threshold, and a voltage across the flying capacitor has reached a target voltage proportional to the input voltage, a charging phase, a freewheeling phase and a discharging phase are repeatedly performed. The charging phase comprises charging the flying capacitor by coupling the flying capacitor to the input voltage, and delivering current from the input voltage through the inductor. The freewheeling phase comprises coupling the input terminal to the ground. The discharging phase comprises coupling the capacitor to the input terminal to deliver current from the flying capacitor and discharge the flying capacitor through the inductor.
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