公开(公告)号：US20250070635A1

公开(公告)日：2025-02-27

申请号：US18453776

申请日：2023-08-22

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Raul BLECIC ,  Syed Wasif MEHDI ,  Pavol BALAZ

IPC: H02M1/00 ,  H03K17/687 ,  H03K19/003

Abstract: A circuit includes a high-side driver having a high-side slew control input, a high-side drive input and a high-side drive output. A low-side driver has a low-side slew control input, a low-side drive input and a low-side drive output. Drive control circuitry has a high-side drive control output, a low-side drive control output, and a slew control output. The high-side drive control output is coupled to the high-side drive input, the low-side drive control output is coupled to the low-side drive input. The slew control output is coupled to at least one of the high-side slew control input and the low-side slew control input, and the drive control circuitry is configured to provide a slew control signal at the slew control output. The high-side and/or low-side driver is configured to modulate a slew rate of a drive signal at a respective drive output thereof based on the slew control signal.

公开(公告)号：US20240146177A1

公开(公告)日：2024-05-02

申请号：US18050220

申请日：2022-10-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Syed Wasif MEHDI ,  Stefan HERZER

IPC: H02M1/08 ,  H02M1/00 ,  H02M1/44

CPC classification number: H02M1/08 ,  H02M1/0054 ,  H02M1/44

Abstract: A gate driver circuit includes a charge pump circuit, a gate pull-up transistor, a resistor, and a capacitor. The charge pump circuit includes an output. The gate pull-up transistor includes a first current terminal, a second current terminal, and a control terminal. The first current terminal is coupled to the output of the charge pump circuit. The second current terminal is coupled to a gate drive output terminal. The resistor is coupled between the power input terminal and the control terminal. The capacitor is coupled between the control terminal and a ground terminal.

公开(公告)号：US20180294726A1

公开(公告)日：2018-10-11

申请号：US15853494

申请日：2017-12-22

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Antonio PRIEGO ,  Neil GIBSON ,  Syed Wasif MEHDI

IPC: H02M3/158

CPC classification number: H02M3/1584 ,  H02M2001/0025 ,  H02M2001/0032 ,  H02M2003/1566 ,  H02M2003/1586

Abstract: A multiphase power regulator includes a plurality of phases coupled in parallel to provide a load current as a combination of phase currents at an output voltage, each phase including at least one power transistor switched to provide a respective phase current based at least in part on a comparator output signal, and a current-sense low pass filter to sense the phase current. The regulator further includes a gm stage to generate the current set point voltage based at least in part on the output voltage, a comparator to compare a voltage from the current-sense low pass filters to the current set point voltage and a current set point adjustment circuit to provide an auxiliary control signal to decrease the current set point voltage responsive to a change in comparator output and then to increase the current set point voltage responsive to another change in comparator output.

公开(公告)号：US20200007035A1

公开(公告)日：2020-01-02

申请号：US16024371

申请日：2018-06-29

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Syed Wasif MEHDI ,  Stefan Herzer ,  Antonio PRIEGO

IPC: H02M3/158

Abstract: A system comprises a DC-to-DC voltage converter, the DC-to-DC voltage converter comprising: a high-side FET comprising a gate, a source, and a drain; a node coupled to the source of the high-side FET; a low-side FET comprising a gate, a source, and a drain coupled to the node; and a controller coupled to the gate of the high-side FET to switch on and off the high-side FET, and coupled to the gate of the low-side FET to switch on and off the low-side FET, the controller configured to switch on the low-side FET for a time interval before switching on the high-side FET and to switch off the low-side FET before switching on the high-side FET.

公开(公告)号：US20180294724A1

公开(公告)日：2018-10-11

申请号：US15854061

申请日：2017-12-26

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Syed Wasif MEHDI ,  Neil GIBSON ,  Antonio PRIEGO

IPC: H02M3/158 ,  G05F1/62 ,  H02M1/08 ,  H02M3/137 ,  H02M3/338 ,  H03K17/16 ,  H02J1/10

CPC classification number: H02M3/1582 ,  G05F1/62 ,  H02J1/10 ,  H02M1/08 ,  H02M3/137 ,  H02M3/158 ,  H02M3/1588 ,  H02M3/338 ,  H02M2001/0032 ,  H03K17/164 ,  H03K17/166

Abstract: A controller including a voltage synthesizer for a switching regulator includes a synthesizer input to be coupled to an input of the regulator. First and second replica switching transistors are connected at a first node. A resistor couples between the first node and a second node, and a capacitor couples between the second node and ground. A transconductance stage compares a voltage sampled onto the capacitor to the output voltage of the regulator and generates an output signal in response to the comparison. A first switch couples between first and second inputs of the transconductance stage. The first switch is turned on during each cycle of operation of the voltage synthesizer to reset the capacitor voltage to the output voltage of the regulator.