288 results about "Power management integrated circuit" patented technology

A system and method for implementing a multi-voltage multi-battery power management integrated circuit. Various aspects of the present invention provide a power management integrated circuit. The power management IC may comprise a first regulator module that receives a first battery power signal from a first battery characterized by a first battery voltage and outputs a first regulated power signal, based at least in part on the first battery power signal. The power management IC may also comprise a second regulator module that receives a second battery power signal from a second battery characterized by a second battery voltage and outputs a second regulated power signal, based at least in part on the second battery power signal. The second battery voltage may, for example, be substantially different than the first battery voltage. The power first and second regulated power signals may, for example, correspond to substantially different power supply voltages.

A readily scalable modular progammable integrated circuit (IC) with improved power management is provided. An IC is described that contains one master controller module and a multiplicity of slave modules that include power-supplying functions, battery management functions, and analog and digital input-output functions. The master controller module configures the slave modules by writing data to the slave modules' configuration registers through the communication network. Each module contains a multiplicity of configuration registers that determine the module's operational and parametric characteristics. Programmability is achieved by configuring the modules to respond to appropriate signals on the configurable interconnection network.

An apparatus and method allows selection of either one of main power supplied from a battery and DC Output (DCO) power supplied from a DC/DC converter included in a power management integrated circuit (PMIC) as the input power of an LDO regulator and supply of the selected power to the LDO regulator. The voltage of the input power of the LDO regulator is as low as possible, thus to reduce power loss caused by the LDO regulator. Also, DCO power supplied from the DC/DC converter included in the PMIC is supplied to the LDO regulator as the input power, and if a load connected to the DC/DC converter is turned off, the DC/DC converter is variably controlled to reduce the voltage of the input power supplied to the LDO regulator to be as low as possible, to thus reduce power loss caused by the LDO regulator.

The invention discloses a terminal and method supporting dual network data transmission, wherein the terminal comprises a first processor, a second processor and a PMIC (Power Management Integrated Circuit), wherein the first processor supports to be set into a USB (Universal Serial Bus) host and/or a USB device; the second processor supports to be set into a USB device; the first processor is used for performing USB communication in a USB mode after the communication between the first processor and the second processor is triggered; and the PMIC is used for transmitting a control command and/or state information through a communication passage built between the PMIC and the first processor so as to trigger the communication between the first processor and the second processor, the USB charging communication and/or the USB normal communication.

The invention discloses a mobile terminal of automatically setting a charging current and an implementation method thereof. The mobile terminal is provided with a charging port, wherein the charging port comprises a charging circuit, a PMIC (Power Management Integrated Circuit) module provided with the charging current, a first voltage detection module used for detecting a charging voltage, a current detection module used for detecting the charging current, and a second voltage detection module used for detecting the output voltage of a charger. The mobile terminal can obtain the maximum charging current of the charger through the second voltage detection module detecting the output voltage of the charger in real time and the PMIC module judging if the voltage is more than the preset voltage of the mobile terminal. Besides, the maximum charging current is set as the final charging current of the mobile terminal, and the charging efficiency of the mobile terminal is improved. When charged, the mobile terminal can automatically set the charging current according to chargers of different powers, and can realize electric compatibility.

A switched mode power converter having a feedback mechanism by which a coded train of pulses with well defined integrity is generated on a secondary side of the power converter and transmitted to a dedicated control signal winding on the primary side for decoding and application to regulate the power converter output. The control signal winding enables separation of control signal transmission and power transmission resulting in improved processing of the control signal by a primary side controller. The pulse train is modulated by a secondary side controller, transmitted across a transformer and received by the control signal winding, and supplied to the primary side controller. Coded information is included in the coded pulse train by modulating pulses of the pulse train.

A programmable power management integrated circuit includes analog input monitors that receive analog input signals that correspond to voltage, current, or temperature measurements. The analog input monitors apply programmable thresholds to the measurements and output the results to a programmable logic device, which may generate various status and/or control signals to the system being monitored. The programmable logic device controls FET drivers that can switch on and off power to the monitored system. The programmable power management integrated circuit may also comprise an internal oscillator, a serial interface, an in-system programmable interface, a joint test action group interface, a memory that stores identification information, and a register for capturing system information during power-down.

A Multi-Tile Power Management Integrated Circuit (MTPMIC) includes tiles including an MCU/ADC tile and a power manager tile. The power manager tile includes a set of Configurable Switching Power Supply Pulse Width Modulator (CSPSPWM) components. These components, in combination with other circuitry external to the integrated circuit, are configurable to form a selected one of a number of different switching power supply circuits. Upon power up, an internal regulator supplies power to the CSPSPWM. The CSPSPWM then controls the power supply to begin switching in a low frequency start-up mode. The CSPSPWM determines during start-up the current sensing method based on circuitry external to the integrated circuit. A supply voltage generated is then supplied via a conductor of a standardized bus to a processor in the MCU/ADC tile. The processor begins executing instructions, and as a result writes across the standardized bus to configure the various tiles of the MTPMIC.

In a clock-based soft-start circuit configured to generate a soft-start reference voltage that restrains an inrush current at an initialization of power supplied to a DC-DC converter, the clock-based soft-start circuit comprises a time setting unit configured to set a soft-start time period in response to a clock signal. A ramp circuit is configured to generate a soft-start reference voltage which is ramped upward or downward between a base level and a reference voltage level during the soft start time period set by the time setting unit. In this manner, the clock-based soft-start circuit is applicable for all DC-DC converters and the soft-start in a linear slope is possible.

A power management integrated circuit includes pairs of high-side and low-side drivers, sensing circuitry, and a processor. The high-side and low-side drivers are used in combination with external discrete NFETs to drive multiple windings of a motor. The N-channel LDMOS transistor of each high-side driver has an associated isolation structure and a tracking and clamping circuit. If the voltage on a terminal of the integrated circuit pulses negative during a switching of current flow to the motor, then the isolation structure and tracking and clamping circuit clamps the voltage on the isolation structure and blocks current flow from the substrate to the drain. An associated ESD protection circuit allows the voltage on the terminal to pulse negative. As a result, a large surge of current that would otherwise flow through the high-side driver is blocked, and is conducted outside the integrated circuit through a body diode of an external NFET.

The invention discloses a standby circuit of a handheld device and an awaken method thereof, which is characterized in that a touch IC utilizes a charge level which is produced between an operator finger and a touch pad to detect, and the finger is determined whether to touch the sensing surface by detecting the variation of the current; the touch IC transmits a sensing signal to a microcontroller through a first GPIO, the sensing signal awakens the microcontroller from a sleeping mode, and a controllable power supply management IC is opened through a second GPIO to supply power to the device so as to complete the awakening of the entire system; and when the finger of the operator leaves the device after the operation, a touch keystroke IC notifies that the microcontroller that the operation of the device is completed, the microcontroller selects whether the standby is needed according to the present work situation of the device, if the standby is required, the controllable power supply management IC is disconnected through the second GPIO, and the microcontroller enters the sleeping mode until the next awakening. Through the standby circuit, the power consumption during the standby can be kept at the minimum level, so the transparent awaken of the system is completed before the operation of the device, and the awakening process is free from the manual interference.

A measuring circuit connectable to a capacitive touch-sensitive panel, the panel including a plurality of sense electrodes and optionally a common guard electrode, adapted to measure variations in the instantaneous electric capacity of the sense electrodes in response to proximity to conductive bodies, wherein the sense electrodes are biased at a fixed voltage relative to the common guard electrode, the measuring circuit comprising: a power management integrated circuit comprising a voltage source generating a modulation voltage that is available at a guard terminal of the power management integrated circuit that is in electric connection with the guard electrode; one or more slave integrated circuits, each connected to a plurality of sense electrodes and comprising a Capacity-to-Digital converter or a plurality of Capacity-to-Digital converters that are operatively arranged for generating digital measure codes representing the instantaneous electric capacity of sense electrodes; a means for varying the frequency of the modulation voltage.

Methods and apparatus for a power management integrated circuit (PMIC) for receiving energy from multiple energy harvesting sources. The PMIC comprises a boost converter to receive a plurality of first power supplies and to generate an intermediate voltage, the boost converter having a plurality of input terminals coupled to the plurality of first power supplies, and a switched capacitor charge pump to receive the intermediate voltage and to generate a second power supply is shown.

In accordance with aspects of the present invention, a programmable power management integrated circuit is presented. An integrated circuit can include a plurality of cells, each cell including at least one driver for a switchable element; and a switch matrix and controller coupled to the plurality of cells, the switch matrix and controller being programmable to configure at least one power channel, each power channel including at least one cell of the plurality of cells. A method of providing a power management system using the integrated circuit includes receiving power requirements corresponding to a target device; providing implementation options to achieve the power requirements; selecting a solution from the implementation options; generating a programming file for a power management integrated circuit, and generating a printed circuit board design for the power management integrated circuit.

A central processing unit (CPU) is disclosed. The CPU includes a CPU die; and a power management die bonded to the CPU die in a three dimensional packaging layout.

The present invention provides a DC to DC conversion circuit, comprising a DC power supply, a DC to DC converter, a power management IC and a load, wherein the load may be a backlight source of a liquid crystal display. The power management IC controls the DC to DC converter to convert a DC voltage supplied by the DC power supply to an output voltage of the DC to DC converter, which is supplied to the load. The power management IC is capable of controlling the DC to DC converter to adjust the output voltage to a minimum voltage actually needed by the load according to the variation of the minimum voltage which is actually needed by the load.

A touch display system includes a display system including a plurality of pixels, a touch system disposed on the display system and comprising a plurality of touch sensor electrodes, and a power management integrated circuit (PMIC) configured to supply power and a modulated ground (GND) voltage to the display system and the touch system.

There is provided a display device including a power management integrated circuit outputting a driving voltage and a gamma voltage, a timing controller outputting an image data signal and a driving control signal, a data driver converting the image data signal to a data voltage signal based on the driving voltage, the gamma voltage, and the driving control signal, a power connecting portion connecting the power management integrated circuit and the data driver, a voltage detector detecting the driving voltage and the gamma voltage that are voltage-dropped in the power connecting portion, and outputting a feedback signal, and a power adjustor receiving the feedback signal and outputting a power control signal to the power management integrated circuit, and adjusting the driving voltage and the gamma voltage based on the power control signal.

A display device includes a display panel, pixels on the display panel, data and gate drivers, a timing controller which applies control signals respectively to the data and gate drivers, and a power management integrated circuit (“PMIC”) which applies a driving voltage to the data and gate drivers. The timing controller detects an operational condition of the display panel and selects one of stored power setting values to output the selected one of the power setting values to the PMIC. The PMIC includes, first and second storage banks, a controller which receives the power setting value from the timing controller, stores the power setting value in one of the first and second storage banks, and calls the stored power setting value to determine the driving voltage, and a power generator which applies the driving voltage based on the driving voltage determined by the controller.

A method of performing a dynamic voltage and frequency scaling operation comprises controlling a clock management unit (CMU) to predict an operating state of a central processing unit (CPU) and to provide operating frequency information to a power management integrated circuit (PMIC) based on the predicted operating state of the CPU, the operating frequency information indicating a change of an operating frequency of an application processor, and controlling the PMIC to change an operating voltage of the application processor based on the operating frequency information provided from the clock management unit.

The invention discloses an efficient power source capable of supplying electricity in a constant voltage and constant current alternation mode. The efficient power source capable of supplying the electricity in the constant voltage and constant current alternation mode comprises a power source, an EMI filter, a rectifier and filter module, a power factor correction module, a power management IC module and an LLC transformer module, which are connected in sequence, wherein the LLC transformer module outputs two types of windings which are respectively used as windings of a high voltage and constant current output module and a low voltage and constant voltage output module. The efficient power source capable of supplying the electricity in the constant voltage and constant current alternation mode effectively uses an efficient control mode of PWM (pulse width modulation) of an LED (light emitting diode) backlight, outputs a constant voltage source and a constant current source which alternately work under loop control by only using a transformer, not only can meet the constant current requirement of the LED backlight, but also can meet the constant voltage source requirement of a machine core, simplifies an electric circuit due to the fact that no constant current board or no accessory power source needs to be manufactured, achieves low power consumption in a standby mode, and reduces system cost, and furthermore efficiency of the power source is improved.