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公开(公告)号：US09041468B2
公开(公告)日：2015-05-26
申请号：US13847713
申请日：2013-03-20
Applicant: NXP B.V.
Inventor： Benno Krabbenborg , Marco Berkhout , Johan Somberg , Peter Van De Haar
CPC classification number: G05F5/00 , H02M3/158 , H02M2001/0019 , H02M2003/1566 , H03F3/2171
Abstract: A method of operating a switched-mode power supply (SMPS) for supplying power to a load circuit, which draws a supply current that varies with an input signal to the load circuit is disclosed. The method comprises monitoring the input signal and controlling the amount of accumulated energy transferred for consumption by the load circuit, in use, in accordance with the input signal.
Abstract translation: 公开了一种操作开关模式电源（SMPS）的方法，用于向负载电路供电，该负载电路吸取随负载电路的输入信号而变化的电源电流。 该方法包括监视输入信号并根据输入信号控制在使用中由负载电路传输消耗的累积能量的量。
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公开(公告)号：US09984257B2
公开(公告)日：2018-05-29
申请号：US15088309
申请日：2016-04-01
Applicant: NXP B.V.
Inventor： Peter Van De Haar , Franciscus Widdershoven
CPC classification number: G06F21/88 , G06F21/73 , G06F21/75 , G06F21/86 , G06F2221/2103 , H01L23/576
Abstract: A secure electronic apparatus and a method for determining that a secure electronic apparatus has been tampered with. The apparatus includes a memory and a plurality of sensors which each to receive an input signal and output a digital signal determined by the input signal and by a physical quantity sensed by the sensor (e.g. capacitance). A measurement routine includes applying a plurality of input signal values to the sensors and, for each input signal value, using the digital output signals of each sensor to determine a combined output result. The combined output results of the measurement routine are compared with a set of combined output results stored in the memory. A detected a difference between the combined output results of the measurement routine and the set of combined output results stored in the memory can be used to determine that the secure electronic apparatus has been tampered with.
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