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1. 发明授权

US09804619B2 USB power supply apparatus 有权
公开(公告)号：US09804619B2
公开(公告)日：2017-10-31
申请号：US14919109
申请日：2015-10-21
申请人： ROHM CO., LTD.
发明人： Kenichi Motoki
IPC分类号： G05F1/571 , G05F1/56 , G05F1/565 , G05F1/573 , H02M3/156 , H02M3/158 , G05F1/575
CPC分类号： G05F1/575
摘要： A USB power supply apparatus supplies electric power to a USB power reception apparatus. A bus line connects the output of the power supply circuit and the USB power reception apparatus. A switch is provided on a path of the bus line. A feedback circuit feedback controls the power supply circuit such that the output voltage VOUT of the power supply circuit approaches a reference voltage VREF. A controller adaptively controls the reference voltage VREF based on an electrical state of the USB power supply apparatus.

2. 发明授权

US09584016B2 USB power supply apparatus 有权
标题翻译： USB电源设备
公开(公告)号：US09584016B2
公开(公告)日：2017-02-28
申请号：US14919062
申请日：2015-10-21
申请人： ROHM CO., LTD.
发明人： Kenichi Motoki
IPC分类号： H02M3/156 , H02M3/335
CPC分类号： H02M3/156 , H02M3/33523
摘要： A USB power supply apparatus conforms to the USB (Universal Serial Bus) specification, and supplies electric power to a USB power receiving apparatus. A bus line connects the output of a power supply circuit and the USB power receiving apparatus. A switch is provided on a path of the bus line. A selector selects one from among the output voltage VOUT of the power supply circuit and the bus voltage VBUS at a position that is closer to the USB power receiving apparatus side than the switch. A feedback circuit feedback controls the power supply circuit such that the voltage VS selected by the selector approaches a setting voltage VSET. A controller controls the switch and the selector based on the state of the USB power supply apparatus.
摘要翻译： USB电源设备符合USB（通用串行总线）规范，并向USB电源接收设备供电。总线连接电源电路的输出和USB电力接收装置。在总线的路径上提供开关。选择器从比开关更靠近USB电力接收装置侧的位置从电源电路的输出电压VOUT和总线电压VBUS中选择一个。反馈电路反馈控制电源电路，使得由选择器选择的电压VS接近设定电压VSET。控制器根据USB电源设备的状态控制开关和选择器。

3. 发明授权

US09991804B2 Bus controller including feedback control unit reducing power consumption 有权
公开(公告)号：US09991804B2
公开(公告)日：2018-06-05
申请号：US15099922
申请日：2016-04-15
申请人： ROHM CO., LTD.
发明人： Kenichi Motoki
IPC分类号： H02M3/335 , H02J7/02 , H02M1/00
CPC分类号： H02M3/33523 , H02J7/022 , H02M3/33576 , H02M2001/0025 , H02M2001/0032 , Y02B70/16
摘要： A power supply apparatus is provided, that supplies a bus voltage VBUS to a detachable device. A DC/DC converter generates a DC voltage VOUT used as the bus voltage VBUS. A USB controller receives the DC voltage VOUT as a power supply voltage, and detects whether or not the device is connected. The DC/DC converter generates the DC voltage VOUT such that (i) when the device is detected, the DC voltage VOUT has a specified voltage level, and such that (ii) when the device is not detected, the DC voltage VOUT has a voltage level that is lower than the specified voltage level and that is higher than a minimum operating voltage level required to operate the USB controller.

4. 发明授权

US09696778B2 Power delivery device and control method of the same 有权
公开(公告)号：US09696778B2
公开(公告)日：2017-07-04
申请号：US14302577
申请日：2014-06-12
申请人： ROHM CO., LTD.
发明人： Kenichi Motoki , Manabu Miyata
IPC分类号： G06F1/26 , H02J1/06 , H04L12/64 , G06F1/24 , H02M1/32
CPC分类号： G06F1/266 , G06F1/24 , H02J1/06 , H02M2001/322 , H04L12/6418 , Y10T307/766
摘要： There can be provided a power delivery (PD) device capable of achieving protocols, e.g. Hard Reset, without using any alternative power source, and a control method of thereof. The PD device includes: a power source; a power line configured to deliver power supplied from the power source, to an outside; a switch connected between the power source and the power line; and a control circuit connected to the power line so that power is supplied from the power source to the control circuit, wherein at the time when a Hard Reset protocol is received from the outside through the power line, the control circuit turns from ON to OFF the switch to disconnect the power line from the power source.

5. 发明授权

US10554042B2 Power supply apparatus 有权
公开(公告)号：US10554042B2
公开(公告)日：2020-02-04
申请号：US15465121
申请日：2017-03-21
申请人： ROHM CO., LTD.
发明人： Kenichi Motoki
IPC分类号： H01B11/02 , H02J1/00 , H02J7/00 , H02M3/04 , H02M7/04
摘要： A power supply apparatus requests the transmission of a requested PDO. A power receiving apparatus transmits the requested PDO in response to the request. The power supply apparatus modifies a first PDO list based on the requested PDO when it is possible to do so. The first PDO list is modified when the requested voltage is not defined in the first PDO list in a case in which a power supply circuit of the power supply apparatus is capable of supplying the request voltage indicated by the requested PDO. Subsequently, negotiation is performed based on the first PDO list thus modified.

6. 发明授权

US09742297B2 Power delivery device, AC adapter and electronic apparatus 有权
公开(公告)号：US09742297B2
公开(公告)日：2017-08-22
申请号：US14469035
申请日：2014-08-26
申请人： ROHM CO., LTD.
发明人： Kenichi Motoki
IPC分类号： H02M3/335 , H02M1/10 , H02M1/00
CPC分类号： H02M3/33561 , H02M1/10 , H02M2001/007
摘要： A power delivery (PD) device includes: an AC/DC converter connected to an AC input, the AC/DC converter configured to change the AC input to a desired voltage value to be output in accordance with a first voltage changing control signal supplied from outside; and a DC/DC converter connected between an output of the AC/DC converter and a DC output, the DC/DC converter configured to change the output from the AC/DC converter to a desired voltage value to be output as a DC output in accordance with a second voltage changing control signal supplied from outside, wherein the AC/DC converter at a previous stage and the DC/DC converter at a subsequent stage are interlocked to change the output voltage to desired target voltage. There can be provided the PD device capable of delivering power with high power efficiency over the wide voltage ranges.

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