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公开(公告)号：US10411592B2
公开(公告)日：2019-09-10
申请号：US15854467
申请日：2017-12-26
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Ananthakrishnan Viswanathan , Salvatore Giombanco , Joseph Michael Leisten , Philomena Cleopha Brady
Abstract: A power factor correction circuit includes a power transistor, an inductor, and detection circuitry. The inductor is coupled to a drain terminal of the power transistor. The detection circuitry is coupled to the drain terminal of the power transistor. The detection circuitry is configured to determine an input voltage applied to the inductor based on resonant ringing of voltage at the drain terminal, and to detect a valley in the voltage at the drain terminal based on the input voltage applied to the inductor.
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公开(公告)号：US11201547B2
公开(公告)日：2021-12-14
申请号：US16407493
申请日：2019-05-09
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Philomena Cleopha Brady , Ananthakrishnan Viswanathan , Shanguang Xu
Abstract: A switching converter is provided that includes a power MOSFET, a controller having a drive pin connected to a gate terminal of the power MOSFET, and a resistor connected to the gate terminal. A compensation time selection circuit is included that has compensation times stored therein. A compensation time is selected from the compensation times based on a value of the resistor and stored in the controller. The selected compensation time compensates for an inherent delay in switching the power MOSFET to an ON state after the power MOSFET receives a signal to switch to the ON state to allow the power MOSFET to switch to the ON state when a drain voltage of the power MOSFET's reaches its lowest value during a switching cycle.
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公开(公告)号：US10756620B2
公开(公告)日：2020-08-25
申请号：US16525790
申请日：2019-07-30
Applicant: Texas Instruments Incorporated
Inventor： Ananthakrishnan Viswanathan , Salvatore Giombanco , Joseph Michael Leisten , Philomena Cleopha Brady
Abstract: A power factor correction circuit includes a power transistor, an inductor, and detection circuitry. The inductor is coupled to a drain terminal of the power transistor. The detection circuitry is coupled to the drain terminal of the power transistor. The detection circuitry is configured to determine an input voltage applied to the inductor based on resonant ringing of voltage at the drain terminal, and to detect a valley in the voltage at the drain terminal based on the input voltage applied to the inductor.
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公开(公告)号：US10284077B1
公开(公告)日：2019-05-07
申请号：US15785757
申请日：2017-10-17
Applicant: Texas Instruments Incorporated
Inventor： Joseph Michael Leisten , Ananthakrishnan Viswanathan , Philomena Cleopha Brady , Brent Alan McDonald
Abstract: A Power Factor Correction (PFC) controller includes an error amplifier for amplifying a difference between Vout and intended Vout to provide a power demand (Pdem) output at a compensation pin. A burst mode controller includes soft-start circuitry coupled to receive Pdem and to a drive pin which provides pulses to a control node of a power switch of a DC-DC converter during burst periods. The pulses slow ramping of line current over a first 2 to 36 switching cycles at a beginning of bursts when energizing the inductor to reduce a line current slope as compared to without ramping up, and for slowing ramping down of line current over the last 2 to 36 switching cycles to reduce a line current slope when de-energizing the inductor as compared to a line current without ramping down. The PFC controller does not utilize zero-crossings of the line voltage for burst period synchronization.
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公开(公告)号：US20190356219A1
公开(公告)日：2019-11-21
申请号：US16525790
申请日：2019-07-30
Applicant: Texas Instruments Incorporated
Inventor： Ananthakrishnan Viswanathan , Salvatore Giombanco , Joseph Michael Leisten , Philomena Cleopha Brady
Abstract: A power factor correction circuit includes a power transistor, an inductor, and detection circuitry. The inductor is coupled to a drain terminal of the power transistor. The detection circuitry is coupled to the drain terminal of the power transistor. The detection circuitry is configured to determine an input voltage applied to the inductor based on resonant ringing of voltage at the drain terminal, and to detect a valley in the voltage at the drain terminal based on the input voltage applied to the inductor.
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Patent Agency Ranking
公开(公告)号：US20190267903A1
公开(公告)日：2019-08-29
申请号：US16407493
申请日：2019-05-09
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Philomena Cleopha Brady , Ananthakrishnan Viswanathan , Shanguang Xu
Abstract: A switching converter is provided that includes a power MOSFET, a controller having a drive pin connected to a gate terminal of the power MOSFET, and a resistor connected to the gate terminal. A compensation time selection circuit is included that has compensation times stored therein. A compensation time is selected from the compensation times based on a value of the resistor and stored in the controller. The selected compensation time compensates for an inherent delay in switching the power MOSFET to an ON state after the power MOSFET receives a signal to switch to the ON state to allow the power MOSFET to switch to the ON state when a drain voltage of the power MOSFET's reaches its lowest value during a switching cycle.
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公开(公告)号：US10326373B1
公开(公告)日：2019-06-18
申请号：US15874697
申请日：2018-01-18
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Philomena Cleopha Brady , Ananthakrishnan Viswanathan , Shanguang Xu
CPC classification number: H02M3/33515 , H02M1/08 , H02M1/42 , H02M2001/0054
Abstract: A switching converter is provided that includes a power MOSFET, a controller having a drive pin connected to a gate terminal of the power MOSFET, and a resistor connected to the gate terminal. A compensation time selection circuit is included that has compensation times stored therein. A compensation time is selected from the compensation times based on a value of the resistor and stored in the controller. The selected compensation time compensates for an inherent delay in switching the power MOSFET to an ON state after the power MOSFET receives a signal to switch to the ON state to allow the power MOSFET to switch to the ON state when a drain voltage of the power MOSFET's reaches its lowest value during a switching cycle.
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公开(公告)号：US10128744B1
公开(公告)日：2018-11-13
申请号：US15840318
申请日：2017-12-13
Applicant: Texas Instruments Incorporated
Inventor： Ananthakrishnan Viswanathan , Joseph Michael Leisten , Brent McDonald , Philomena Cleopha Brady
IPC: H02M1/42
Abstract: Disclosed examples include methods and control circuits to operate a single or multi-phase DC-DC converter, including an output that turns a first switch on for a controlled on time and then turns the switch off for a controlled off time in successive control cycles, as well as a PWM circuit that computes a threshold time value corresponding to a predetermined peak inductor current and a duty cycle value, and computes a first time value according to an error value for a subsequent second switching control cycle. The PWM circuit sets the on time to the first time value to operate in a critical conduction mode for the second switching control cycle when the first time value is greater than or equal to the threshold time value, and otherwise sets the controlled on time to the threshold time value for discontinuous conduction mode operation in the second control cycle.
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9.发明授权公开(公告)号：US09342124B2
公开(公告)日：2016-05-17
申请号：US13966190
申请日：2013-08-13
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： David Thomas Bailey , Philomena Cleopha Brady , Nakshatra Shankar Gajbhiye , Eric Warren Southard
CPC classification number: G06F1/26 , Y02B70/3225 , Y04S20/222 , Y10T307/766
Abstract: A power delivery and control device that includes a voltage input line, a voltage output line, a control logic unit coupled to the voltage input and voltage output line to control a voltage being delivered by the voltage output line based on a programmable behavior parameter, a voltage output register accessible to the control logic unit to define the programmable behavior parameter, a control register accessible to the control logic unit to activate and deactivate the voltage output line, and a control line coupled to the control logic unit to receive commands to change content of the voltage output register.
Abstract translation: 一种电力输送和控制装置，包括电压输入线，电压输出线，耦合到电压输入和电压输出线的控制逻辑单元，以基于可编程行为参数来控制由电压输出线传递的电压， 电压输出寄存器可由控制逻辑单元访问以定义可编程行为参数，控制逻辑单元可访问的控制寄存器来激活和去激活电压输出线;以及控制线，耦合到控制逻辑单元以接收改变内容的命令 的电压输出寄存器。
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10.发明申请公开(公告)号：US20140354079A1
公开(公告)日：2014-12-04
申请号：US13966190
申请日：2013-08-13
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： David Thomas Bailey , Philomena Cleopha Brady , Nakshatra Shankar Gajbhiye , Eric Warren Southard
IPC: H02J3/14
CPC classification number: G06F1/26 , Y02B70/3225 , Y04S20/222 , Y10T307/766
Abstract: A power delivery and control device that includes a voltage input line, a voltage output line, a control logic unit coupled to the voltage input and voltage output line to control a voltage being delivered by the voltage output line based on a programmable behavior parameter, a voltage output register accessible to the control logic unit to define the programmable behavior parameter, a control register accessible to the control logic unit to activate and deactivate the voltage output line, and a control line coupled to the control logic unit to receive commands to change content of the voltage output register.
Abstract translation: 一种电力输送和控制装置，包括电压输入线，电压输出线，耦合到电压输入和电压输出线的控制逻辑单元，以基于可编程行为参数来控制由电压输出线传递的电压， 电压输出寄存器可由控制逻辑单元访问以定义可编程行为参数，控制逻辑单元可访问的控制寄存器来激活和去激活电压输出线;以及控制线，耦合到控制逻辑单元以接收改变内容的命令 的电压输出寄存器。
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