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公开(公告)号：US20240266962A1
公开(公告)日：2024-08-08
申请号：US18461979
申请日：2023-09-06
CPC分类号： H02M3/33507 , H02M1/32
摘要： A fly-back circuit includes a voltage source, a transformer comprising a primary winding electrically coupled to the voltage source and a secondary winding electrically coupled to a load, a diode connected between the secondary winding and the load, a switch electrically coupled to the primary winding, a controller operable to open and close the switch to control energy transfer from the primary winding to the secondary winding; and a voltage monitor connected to a node between the secondary winding and the diode. The voltage monitor includes a processor that generates a variable threshold tracking voltage (Vthtracking), generates an output signal that is a toggling output when voltage at the node is above Vthtracking and a constant output when the voltage source is operating below Vthtracking and increases Vthtracking when the output signal is toggling until the output signal is not toggling.
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公开(公告)号：US20240264208A1
公开(公告)日：2024-08-08
申请号：US18348440
申请日：2023-07-07
IPC分类号： G01R19/165 , G01R15/04
CPC分类号： G01R19/16576 , G01R15/04
摘要： A voltage monitor for a fly-back circuit. The circuit includes a voltage source, a transformer comprising a primary winding electrically coupled to the voltage source and a secondary winding electrically coupled to a load, a diode connected between the secondary winding and the load, a switch electrically coupled to the primary winding and a controller operable to open and close the switch to control energy transfer from the primary winding to the secondary winding. The voltage monitor is connected to a node between the secondary winding and the diode that generates an output signal that is a toggling output when the voltage source is operating above an input voltage threshold and a constant output when the voltage source is operating below the input voltage threshold.
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