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公开(公告)号：US11979041B2
公开(公告)日：2024-05-07
申请号：US17129857
申请日：2020-12-21
发明人： Ni Sun , Stephen W Bryson
CPC分类号： H02J7/00304 , H02H7/18 , H02J7/0031
摘要： A fully integrated circuit configuration that can be utilized to prevent abnormal discharge or overcharge in ultra-portable electronic systems is described. This battery protection integrated circuit can be enhanced by the addition of traditional battery protection schemes such as current limiting, overcurrent clamping, under voltage lock out and over voltage protection. This battery protection scheme utilizes a high side switch approach utilizing an ultra-low leakage PMOS power switch rather than the traditional low side NMOS switching.
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公开(公告)号：US20210210969A1
公开(公告)日：2021-07-08
申请号：US17129857
申请日：2020-12-21
发明人： Ni Sun , Stephen W. Bryson
摘要： A fully integrated circuit configuration that can be utilized to prevent abnormal discharge or overcharge in ultra-portable electronic systems is described. This battery protection integrated circuit can be enhanced by the addition of traditional battery protection schemes such as current limiting, overcurrent clamping, under voltage lock out and over voltage protection. This battery protection scheme utilizes a high side switch approach utilizing an ultra-low leakage PMOS power switch rather than the traditional low side NMOS switching.
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公开(公告)号：US09825468B1
公开(公告)日：2017-11-21
申请号：US14586586
申请日：2014-12-30
发明人： Stephen W. Bryson , Ni Sun
摘要： A fully integrated circuit configuration that can be used to control the power path of a number of PMOS load switches is described. The circuit has a unique feature that it can automatically select the input voltage to be presented to the VOUT pin based upon the voltage levels at the respective VIN pins. By using combinations of the EN input pin and the SEL input pin, the circuit can be configured to perform one of four functional behaviors: 1. Complete shutdown (both switches in the OFF position), 2. Automatic input selection according the voltage levels that are presented on the VIN pins, 3. Selection of the VIN1 input only, or 4. Selection of the VIN2 input only. This concept is extended to multiple input sources in further embodiments.
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公开(公告)号：US20170288660A1
公开(公告)日：2017-10-05
申请号：US15632243
申请日：2017-06-23
发明人： Stephen W. Bryson , Ni Sun
IPC分类号： H03K17/16
CPC分类号： H03K17/161 , H03K17/0822 , H03K17/20 , H03K2217/0036 , H03K2217/0054
摘要： Described are apparatus and methods for a load switch with reset and deep sleep capability. The slew rate control methods of the PMOS load switches contained in the load switch configuration is also described. A preferred slew rate control circuit includes a power PMOS transistor that is capable of handling load currents of several amperes along with an integrated controller. The integrated reset and deep sleep functions allow the user to control the basic timing control of the voltages that are required by the system and to save battery power in an extended deep sleep mode such as storage and shipping.
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公开(公告)号：US20160261261A1
公开(公告)日：2016-09-08
申请号：US14638989
申请日：2015-03-04
发明人： Stephen W. Bryson , Ni Sun
IPC分类号： H03K17/082 , H02H9/04
CPC分类号： H02H9/04 , H03K2217/0036
摘要： A fully integrated circuit configuration that can be used to control the gate voltage of a power NMOS load switch using a unique method of controlling the charge pump voltage by utilizing a feedback loop to regulate the gate voltage and turning off the charge pump periodically in order to save power. This configuration is suitable for load switch applications where the input voltage can be as low as 0.8V.
摘要翻译： 一种完全集成的电路配置，可用于使用独特的方法来控制功率NMOS负载开关的栅极电压，该方法通过利用反馈回路来调节栅极电压并周期性地关闭电荷泵来控制电荷泵电压，以便 节省电力 该配置适用于输入电压低至0.8V的负载开关应用。
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6.发明公开公开(公告)号：US20240291298A1
公开(公告)日：2024-08-29
申请号：US18657764
申请日：2024-05-07
发明人： Ni Sun , Stephen W Bryson
CPC分类号： H02J7/00306 , H01M10/44 , H02J7/00302 , H02J7/00304 , H02J7/00309 , H02J7/0034 , H02J7/0063 , H02J7/0069
摘要： A fully integrated circuit configuration that can be utilized to prevent abnormal overdischarge and overcharge in ultra-portable electronic systems is described. This battery protection integrated circuit can be enhanced by the addition of traditional battery protection schemes such as current limiting, overcurrent clamping, under voltage lock out and over voltage protection. This battery protection scheme utilizes a high side switch approach utilizing an ultra-low leakage PMOS power switch rather than the traditional low side NMOS switching.
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公开(公告)号：US20170359057A1
公开(公告)日：2017-12-14
申请号：US15669690
申请日：2017-08-04
发明人： Stephen W. Bryson , Ni Sun
摘要： Described are apparatus and methods for control of multi-channel load switches with synchronized power up/down timing sequences. The slew rate control methods of the PMOS load switches contained in the N Multi-channel configuration is also described. A preferred slew rate control circuit includes a power PMOS transistor that is capable of handling load currents of several amperes along with an integrated controller. The integrated controller allows the user to program the power on/off sequences of each of the load switch channels by simply using a single or multiple input enable input pins.
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公开(公告)号：US09647657B1
公开(公告)日：2017-05-09
申请号：US14469270
申请日：2014-08-26
发明人： Stephen W. Bryson , Ni Sun
CPC分类号： H02J7/345 , H02H1/043 , H02H3/087 , H02H3/18 , H02H3/243 , H02H5/04 , H02J9/06 , H03K17/166 , Y10S323/908
摘要： A fully integrated circuit configuration that can be used to control the power path of a pair of PMOS load switches is described. The circuit also integrates a programmable slew rate for the second PMOS load switch in order to control the power path from the input system voltage (battery or power supply) or from a backup source of power. The integrated circuit configuration also contains a charge pump circuit which can be used to charge the backup source of power to a voltage that is greater than the input voltage.
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9.发明授权Programmable rise time controlled load switch and integrated temperature sensor system with interface bus 有权可编程上升时间控制负载开关和集成温度传感器系统与接口总线公开(公告)号：US09559512B1
公开(公告)日：2017-01-31
申请号：US14469319
申请日：2014-08-26
发明人： Stephen W. Bryson , Ni Sun
摘要： A fully integrated circuit configuration that can be used to control the slew rate of a PMOS load switch is described. The circuit also integrates a multichannel temperature sensing system which can be coupled to an external set of temperature sensors, preferably non-linear PTC (positive temperature coefficient) sensors to provide both current inrush control as well as thermal overload protection. A communications data bus, such as an I2C bus, is employed to provide temperature feedback for the system controller so that the system can better control the temperature of its own environment.
摘要翻译： 描述了可用于控制PMOS负载开关的转换速率的完全集成电路配置。 该电路还集成了多通道温度感测系统，该系统可耦合到外部温度传感器组合，优选非线性PTC（正温度系数）传感器，以提供电流涌入控制以及热过载保护。 采用诸如I2C总线的通信数据总线来为系统控制器提供温度反馈，使得系统可以更好地控制其自身环境的温度。
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