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公开(公告)号：US20240405663A1
公开(公告)日：2024-12-05
申请号：US18325226
申请日：2023-05-30
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Ting-Li Hsu , Qiao Yang , Stefan Herzer , Hans Schmeller
Abstract: An integrated circuit includes an error amplifier having a reference input, a feedback input, and an error output. A comparator has first and second comparator inputs and a comparator output. The first comparator input is coupled to the error output. A control circuit has a control input and a control output. The control input is coupled to the comparator output. The compensation circuit has a compensation control input and a compensation output. The compensation control input is coupled to the control output. The compensation output is coupled to at least one of the reference input, the feedback input, or the error output.
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公开(公告)号：US20240429819A1
公开(公告)日：2024-12-26
申请号：US18211788
申请日：2023-06-20
Applicant: Texas Instruments Incorporated
Inventor： Ting-Li Hsu , Stefan Herzer , Qiao Yang
Abstract: A ground reference circuit to generate a ground reference for a voltage reference circuit includes a resistor coupled in series with a transistor via a current mirror. The resistor is coupled between a ground reference terminal of the voltage reference circuit and a ground terminal of a power converter. The transistor control terminal is configured to receive a pulse width modulation (PWM) control signal having a duty cycle similar to a switching element duty cycle of the power converter. The current mirror circuit is coupled between a current terminal of the transistor and the ground reference terminal. A controller configured to control the switching element duty cycle may include the ground reference circuit, along with the voltage reference circuit, and a PWM circuit configured to determine the switching element duty cycle based on a comparison between a reference voltage provided by the voltage reference circuit and the converter output voltage.
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