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1. 发明公开

EP2846213A1 Method and apparatus for limiting startup inrush current for low dropout regulator 有权转让
标题翻译：方法和装置，用于限制在启动时控制器的浪涌电流对低压差
公开(公告)号：EP2846213A1
公开(公告)日：2015-03-11
申请号：EP13368027.2
申请日：2013-09-05
申请人： Dialog Semiconductor GmbH
发明人： Ambreesh, Bhattad
IPC分类号： G05F1/573
CPC分类号： G05F1/56 , G05F1/573
摘要： A low dropout (LDO) device with improved limitation of the startup inrush current in the LDO and bypass mode of operation. A low dropout device with limiting startup inrush current, the device comprising of a power source, an error amplifier, a pass transistor, a feedback network, and a current limit control whose input is electrically connected to said pass transistor and the electrical output of said error amplifier and whose output is providing a current limit during startup. The low dropout device further comprises a LDO mode current control limit comparator wherein said LDO mode current control limit comparator input comprises of a power source, and output of said pass transistor. The low dropout device further comprises a Bypass mode current control limit comparator wherein said Bypass mode current limit comparator input comprises of a first input voltage of said error amplifier, and a second input voltage from said error amplifier.
摘要翻译：具有改进的在操作中的LDO和旁路模式下的启动浪涌电流限制低压差（LDO）装置。用限制性启动时的浪涌电流A低压降装置，包括一个电源，一个误差放大器，一个传输晶体管，一个反馈网络，和一个电流限制控制，其输入的装置是电连接到所述传递晶体管和Said的电输出误差放大器和它的输出提供在启动过程中的电流限制。低压降装置还包括LDO模式电流控制限制比较worin的电源。所述LDO模式电流控制限制比较输入包括，并且所述传输晶体管的输出。低压降装置还包括一个旁路模式电流控制限制比较worin所述误差放大器的第一输入电压的旁路模式电流限制比较器输入包括，和从所述误差放大器的第二输入端的电压。

2. 发明公开

EP3002659A3 CIRCUITS AND METHOD FOR CONTROLLING TRANSIENT FAULT CONDITIONS IN A LOW DROPOUT VOLTAGE REGULATOR 有权转让
标题翻译： CIRCUITS及方法采用低压废控制器，用于控制临时错误条件
公开(公告)号：EP3002659A3
公开(公告)日：2016-06-29
申请号：EP15188854.2
申请日：2013-10-07
申请人： Dialog Semiconductor GmbH
发明人： Ambreesh, Bhattad
IPC分类号： G05F1/56 , G05F1/46 , H03F3/45
CPC分类号： G05F1/575 , G05F1/462 , G05F1/56 , H02M1/32 , H03F3/45183 , H03F2200/555 , H03F2203/45314 , H03F2203/45636 , H03F2203/45674 , H03F2203/45676
摘要： An overshoot reduction circuit within a low dropout voltage regulator eliminates an overshoot at an output terminal resulting from a transient fault condition occurring at an input or output terminal. The overshoot reduction circuit monitors to sense if there is a transient fault condition occurring at the input or output terminal and provides a Miller capacitance at the output terminal of a differential amplifier of the low dropout voltage regulator to prevent the output of the differential amplifier from being discharged to ground during the transient. A control loop circuit balances current within an active load of the differential amplifier to clamp the output of the differential amplifier to its normal operating point. When the transient fault condition ends, the output voltage of the differential amplifier is set such that a pass transistor of the low dropout regulator responds quickly to resume the regulation to reduce or eliminate the overshoot.

3. 发明公开

EP2952996A1 A current sink stage for LDO 有权转让
标题翻译： LDO的电流吸收阶段
公开(公告)号：EP2952996A1
公开(公告)日：2015-12-09
申请号：EP15150230.9
申请日：2015-01-06
申请人： Dialog Semiconductor GmbH
发明人： Ambreesh, Bhattad
IPC分类号： G05F1/575
CPC分类号： G05F1/575 , G05F1/56 , G05F3/267
摘要： An LDO circuit with a current sink stage reduces significantly overshooting of the output voltage due to sudden changes of output current. The activation of the current sink stage is independent of the overshoot percentage of the regulated output voltage. The disclosure doesn't require large output capacitors to avoid the possibility of brownouts of chips supplied by the LDO.
摘要翻译：由于输出电流突然变化，具有电流吸收级的LDO电路显着降低输出电压的过冲。电流吸收级的激活与调节输出电压的过冲百分比无关。本发明不需要大输出电容器来避免由LDO提供的芯片限制的可能性。

4. 发明授权

EP2759900B1 Maintaining the resistor divider ratio during start-up 有权
标题翻译：启动期间保持电阻分压比
公开(公告)号：EP2759900B1
公开(公告)日：2017-11-22
申请号：EP13392001.7
申请日：2013-01-25
申请人： Dialog Semiconductor GmbH
发明人： Ambreesh, Bhattad , Ludmil, Nikolov
IPC分类号： G05F3/02
CPC分类号： G05F1/575 , G05F3/02 , H03F3/04 , H03G1/0094
摘要： Circuits and methods to maintain a resistive voltage divider ratio during start-up of an electronic circuit comprising a feed-forward capacitor across a feedback resistor using a dynamic start-up circuit are disclosed as e.g. a LDO or an amplifier. In a preferred embodiment of the disclosure is applied to an LDO. Modification of the resistive voltage divider ratio caused by the feed-forward capacitor during start-up is prevented while the voltage level of a voltage access point of the voltage divider on the feed-forward capacitor is maintained. Embodiments of the disclosure presented comprise using a start-up buffer or a start-up capacitor during the start-up phase.

5. 发明公开

EP2849020A1 A dual mode low dropout voltage regulator 有权
标题翻译： Dualmodus-Spannungsregler mit geringer Abfallspannung
公开(公告)号：EP2849020A1
公开(公告)日：2015-03-18
申请号：EP13392004.1
申请日：2013-09-13
申请人： Dialog Semiconductor GmbH
发明人： Ambreesh, Bhattad
IPC分类号： G05F1/56
CPC分类号： G05F1/56
摘要： A dual mode low dropout voltage regulator has a low dropout regulation mode and a bypass mode and provides a smooth transition between mode transitions taking place under load. When an accessory requires a larger voltage level, a bypass signal commands the dual mode low dropout voltage regulator to go into bypass mode and transfer voltage level of the unregulated input voltage source to the output of the dual mode low dropout voltage regulator. The dual mode low dropout voltage regulator provides a smooth transition to the bypass to prevent the output of the dual mode low dropout voltage regulator from decreasing or having a "brown out" until a pass transistor is forced to turn on fully to provide the voltage level of the unregulated input voltage source to fully bypass the low dropout regulating mode of operation.
摘要翻译：双模低压差稳压器具有低压差调节模式和旁路模式，并且在负载下发生的模式转换之间提供平滑过渡。当附件需要较大的电压电平时，旁路信号命令双模低压差稳压器进入旁路模式，并将未稳压的输入电压源的电压电平传输到双模低压差稳压器的输出。双模低压差稳压器提供平滑过渡到旁路，以防止双模低压差稳压器的输出减少或具有“掉电”，直到通过晶体管被强制导通以提供电压电平的未稳压输入电压源，以完全绕过低压差调节工作模式。

6. 发明授权

EP2849020B1 A dual mode low dropout voltage regulator 有权
公开(公告)号：EP2849020B1
公开(公告)日：2019-01-23
申请号：EP13392004.1
申请日：2013-09-13
申请人： Dialog Semiconductor GmbH
发明人： Ambreesh, Bhattad
IPC分类号： G05F1/56

7. 发明公开

EP3002659A2 CIRCUITS AND METHOD FOR CONTROLLING TRANSIENT FAULT CONDITIONS IN A LOW DROPOUT VOLTAGE REGULATOR 有权转让
标题翻译： CIRCUITS及方法采用低压废控制器，用于控制临时错误条件
公开(公告)号：EP3002659A2
公开(公告)日：2016-04-06
申请号：EP15188854.2
申请日：2013-10-07
申请人： Dialog Semiconductor GmbH
发明人： Ambreesh, Bhattad
IPC分类号： G05F1/56 , G05F1/46 , H03F3/45
CPC分类号： G05F1/575 , G05F1/462 , G05F1/56 , H02M1/32 , H03F3/45183 , H03F2200/555 , H03F2203/45314 , H03F2203/45636 , H03F2203/45674 , H03F2203/45676
摘要： An overshoot reduction circuit within a low dropout voltage regulator eliminates an overshoot at an output terminal resulting from a transient fault condition occurring at an input or output terminal. The overshoot reduction circuit monitors to sense if there is a transient fault condition occurring at the input or output terminal and provides a Miller capacitance at the output terminal of a differential amplifier of the low dropout voltage regulator to prevent the output of the differential amplifier from being discharged to ground during the transient. A control loop circuit balances current within an active load of the differential amplifier to clamp the output of the differential amplifier to its normal operating point. When the transient fault condition ends, the output voltage of the differential amplifier is set such that a pass transistor of the low dropout regulator responds quickly to resume the regulation to reduce or eliminate the overshoot.
摘要翻译：低压差电压调节器内的过冲抑制电路消除在输出过冲在终端从一个瞬时故障条件在在输入端或输出端发生的所得。过冲抑制电路监视以检测是否存在瞬时故障条件在输入或输出端存在的和提供在所述低压降稳压器的差动放大器的输出端子的米勒电容，以防止被所述差动放大器的输出在瞬态期间对地放电。所述差分放大器的有源负载的电流内的控制环路电路余额到差分放大器的输出钳位到其正常工作点。当瞬时故障状态结束时，差分放大器的输出电压被设置搜索做的低压降稳压器的一个传输晶体管响应快恢复的调节，以减少或消除过冲。

8. 发明公开

EP2857922A1 Circuits and method for controlling transient fault conditions in a low dropout voltage regulator 审中-公开
标题翻译：电路和在低差稳压器控制瞬时故障状况的方法
公开(公告)号：EP2857922A1
公开(公告)日：2015-04-08
申请号：EP13368039.7
申请日：2013-10-07
申请人： Dialog Semiconductor GmbH
发明人： Ambreesh, Bhattad
IPC分类号： G05F1/56
CPC分类号： G05F1/575 , G05F1/462 , G05F1/56 , H02M1/32 , H03F3/45183 , H03F2200/555 , H03F2203/45314 , H03F2203/45636 , H03F2203/45674 , H03F2203/45676
摘要： An overshoot reduction circuit within a low dropout voltage regulator eliminates an overshoot at an output terminal resulting from a transient fault condition occurring at an input or output terminal. The overshoot reduction circuit monitors to sense if there is a transient fault condition occurring at the input or output terminal and provides a Miller capacitance at the output terminal of a differential amplifier of the low dropout voltage regulator to prevent the output of the differential amplifier from being discharged to ground during the transient. A control loop circuit balances current within an active load of the differential amplifier to clamp the output of the differential amplifier to its normal operating point. When the transient fault condition ends, the output voltage of the differential amplifier is set such that a pass transistor of the low dropout regulator responds quickly to resume the regulation to reduce or eliminate the overshoot.
摘要翻译：低压差电压调节器内的过冲抑制电路消除在输出过冲在终端从一个瞬时故障条件在在输入端或输出端发生的所得。过冲抑制电路监视以检测是否存在瞬时故障条件在输入或输出端存在的和提供在所述低压降稳压器的差动放大器的输出端子的米勒电容，以防止被所述差动放大器的输出在瞬态期间对地放电。所述差分放大器的有源负载的电流内的控制环路电路余额到差分放大器的输出钳位到其正常工作点。当瞬时故障状态结束时，差分放大器的输出电压被设置搜索做的低压降稳压器的一个传输晶体管响应快恢复的调节，以减少或消除过冲。

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