Wistron Corporation

Dell Products Inc.

Winstron Corp.

Meng-Ru Tsai

Ying-Tzu Chou

Chin-Min Liu

Tung-Ling Tsai

Kunnan Chen

Chih-Hsiang Chien

Ting-Chun Fong

A server chassis, including: a server motherboard; a PSU positioned within a first enclosure of the server chassis, the PSU including: a control board coupled to the server motherboard; a hot-pluggable rectifier; a charge control management module coupled to the control board; a battery pack positioned within a second enclosure of the server chassis, the battery pack coupled to the charge control management module, wherein, when the hot-pluggable rectifier is coupled to the control board and an AC source is coupled to the hot-pluggable rectifier, i) the hot-pluggable rectifier provides power to the server motherboard through the control board and ii) stores energy, via the charge control management module, at the battery pack, wherein, when the hot-pluggable rectifier is de-coupled from the control board and/or the AC source is de-coupled from the hot-pluggable rectifier, the battery pack provides power to the server motherboard via the charge control management module.

Server chassis including an integrated power supply unit

A detecting device for detecting a stack light state includes a low-pass filter configured to perform low-pass filtering on an input signal to generate a first output voltage; and a logic circuit coupled to the low-pass filter and configured to determine the stack light state according to the first output voltage; wherein the input signal is a pulse width modulation signal and a voltage level of the first output voltage is between a highest voltage level and a lowest voltage level of the pulse width modulation signal.

Detecting device and detecting method

A circuit comprising a first driver having an input, an output and a power input, and a first regulator having an input, an output coupled to the first driver, and an adjustment control configured to control a voltage of the first regulator. A second driver having an input, an output and a power input, and a second regulator having an input, an output coupled to the second driver, and an adjustment control configured to control a voltage of the second regulator. A first impedance coupled to the adjustment control of the first regulator and configured to selectably increase or decrease the voltage of the first regulator.

Efficiency improvement for a DC-to-DC buck voltage regulator

An electronic device is provided. The electronic device includes a plurality of expansion connector modules, a power supply path switch circuit, a system load and a controller. The power supply path switch circuit includes a plurality of input ends connected to output ends of expansion connector modules respectively. The system load is coupled to the power supply path switch circuit. The controller is coupled to the expansion connector module and the power supply path switch circuit. The controller determines whether a first power supply source is coupled to one of the expansion connector modules through the expansion connector modules. When the first power supply source is connected to the one of the expansion connector modules, the controller detects the power of the first power supply source via the expansion connector module connected to the first power supply source. Then, the controller adjusts a power supply direction between the expansion connector module connected to the first power supply source and the system load according to the power of the first power supply source.

Electronic device

A signal detecting device and a light-emitting apparatus using the same are provided. The signal detecting device includes an electromagnetic generator and a first switch. The electromagnetic generator includes a first receiving terminal and a second receiving terminal to receive an input signal from the first receiving terminal and the second receiving terminal and generate electromagnetic induction according to the input signal. A first terminal of the first switch is coupled to a first signal source. A second terminal of the first switch is coupled to an output terminal of the signal detecting device. The first switch determines whether the two terminals of the first switch are conducted according to the electromagnetic induction caused by the input signal.

Signal detecting device and light-emitting apparatus using the same

A buck voltage regulator control circuit for a single-input multi-output direct current power supply system, during a soft start phase of a first buck voltage regulator of the power supply system, the buck voltage regulator control circuit controls a first high side switch of the first buck voltage regulator to switch to a turned-on state from a turned-off state when a second high side switch of a second buck voltage regulator is in the turned-off state. Therefore, the first and second high side switches are not simultaneously switched to the turned-on state from the turned-off state to reduce inrush current.

Single input multi output direct current power supply system and control circuit thereof

A voltage regulator circuit and a control method therefor are provided. A voltage regulator circuit includes a Switching Pulse Width Modulation (PWM) voltage regulation control integrated chip (IC), a first switch, a second switch, and a voltage detector. The Switching PWM voltage regulation control IC includes a low-dropout (LDO) regulator and a PWM voltage regulator. The voltage detector detects a predetermined voltage level range of the output voltage, and generates a power good signal of the output voltage. During the startup period, the first switch is turned on, and the input voltage supplies the power source for the LDO regulator to generate a driving source required by the Switching PWM voltage regulation IC. After the startup period, the power source of the LDO regulator are switched from the input voltage to the output voltage by the first switch and the second switch.

Voltage regulator circuit and control method therefor

An amplifying circuit for analog to digital converter with multi-stage conversion range is used for dividing an analog input voltage into multiple voltage ranges to perform signal amplification and attenuation according to multiple magnifications (e.g., amplify the analog input voltage with low voltage level, and attenuate the analog input voltage with high voltage level). The analog to digital converter performs analog to digital conversion to the analog input voltage with amplification or attenuation to generate a digital bit with amplification or attenuation, and then generates an output digital bit according to the digital bit and the magnification. As a result, the analog to digital converter is adaptive to the analog input voltage with high voltage level, and precision and quantization error of the analog input voltage with low voltage level can be maintained as well.

Growing community of inventors

Taipei, Taiwan

Meng-Ru Tsai