Santa Clara, CA, United States
Santa Clara, CA, United States

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Patent
Renesas Electronics America | Date: 2015-09-11

A transformer less battery charger system. In one embodiment, the battery charger system includes input terminals for receiving an AC voltage, output terminals for receiving terminals of a rechargeable battery pack, and a non-isolated DC-DC converter coupled between the input terminals and the output terminals. A device is also coupled somewhere between the input terminals and the output terminals. The device is configured to selectively and indirectly couple the input terminals to the output terminals. More particularly, the device indirectly couples the input terminals to the output terminals when the rechargeable battery pack terminals are received by the output terminals, and the device indirectly decouples the input terminals from the output terminals when the rechargeable battery pack terminals are separated from the output terminals.


Patent
Renesas Electronics America | Date: 2015-06-05

An apparatus and method for dynamically controlling functional aspects of an MCU. In one embodiment an MCU includes a central processing unit (CPU), a memory for storing instructions executable by the CPU, and a T/C channel coupled to receive control values generated by CPU and M event signals, wherein M is an integer greater than 1. The T/C channel is configured to select one or more of the M event signals based on the one or more of the control values. The T/C channel is configured to generate a control signal as a function of the selected one or more of the M event signals. A function of the T/C channel can be controlled by the control signal.


Patent
Renesas Electronics America | Date: 2015-06-03

A method and apparatus for microcontroller (MCU) memory relocation. The MCU includes a central processing unit (CPU) and memory, but lacks a memory management unit (MMU). In one embodiment of the method, a first program is selected for execution by the CPU. The first program is one of a plurality of programs stored in the memory of the MCU. Each of the programs includes position dependent instructions. The programs are compiled from source code written in position dependent code.


Patent
Renesas Electronics America | Date: 2014-03-27

An apparatus and method for dynamically controlling power of a device. In one embodiment, the apparatus includes a first circuit and a second circuit for generating a clock signal, wherein a frequency of the clock signal is dependent on a control voltage provided to the second circuit. A third circuit is coupled to receive the control voltage and is configured to adjust power consumed by the first circuit based on the control voltage.


Patent
Renesas Electronics America | Date: 2015-06-05

An apparatus and method for mapping timer channels to protection groups. One embodiment of the method can be implemented in a microcontroller unit (MCU) that comprises a central processing unit (CPU) coupled to a plurality of timer channels and a plurality of programmable group output disable (PTGOD) circuits. The CPU can select a first group of the timer channels to respond to an assertion of a first output disable signal from a first of the PTGOD circuits. Each timer channel of the first group can disable an output signal in response to receiving the assertion of the first output disable signal.


Patent
Renesas Electronics America | Date: 2016-07-11

A trench MOSFET is disclosed that includes a semiconductor substrate having a vertically oriented trench containing a gate. The trench MOSFET further includes a source, a drain, and a conductive element. The conductive element, like the gate is contained in the trench, and extends between the gate and a bottom of the trench. The conductive element is electrically isolated from the source, the gate, and the drain. When employed in a device such as a DC-DC converter, the trench MOSFET may reduce power losses and electrical and electromagnetic noise.


Patent
Renesas Electronics America | Date: 2015-06-30

Common microcontroller unit (MCU) self-identification information is disclosed. In one embodiment, an MCU is contained in a package. The MCU includes a central processing unit (CPU) and a non-volatile memory. This non-volatile memory stores information specific to the MCU and/or the package. The non-volatile memory also stores a common main program that, when executed by the CPU, accesses the information. The information enables the common main program to adapt itself to resources of the MCU and/or package that are identified in the information.


Patent
Renesas Electronics America | Date: 2016-06-13

Disclosed is an apparatus for use in an ECU. In one embodiment, the apparatus include a first microcontroller coupled to a first IC. The first IC is configured to receive and process sensor signals from respective sensors in an automobile. The first IC is configured to generate first signals in response to processing the sensor signals. The first microcontroller is configured to receive and process one or more of the first signals in accordance with instructions stored in memory of the first microcontroller. The first microcontroller is configured to generate a control signal for controlling a component, such as a spark plug, of the automobile in response to the first microcontroller processing the one or more of the first signals. The first IC is also configured to generate another control signal for controlling another component of the automobile in response to processing the sensor signals.


Patent
Renesas Electronics America | Date: 2015-03-24

A trench MOSFET is disclosed that includes a semiconductor substrate having a vertically oriented trench containing a gate. The trench MOSFET further includes a source, a drain, and a conductive element. The conductive element, like the gate is contained in the trench, and extends between the gate and a bottom of the trench. The conductive element is electrically isolated from the source, the gate, and the drain. When employed in a device such as a DC-DC converter, the trench MOSFET may reduce power losses and electrical and electromagnetic noise.


Patent
Renesas Electronics America | Date: 2015-02-27

An apparatus that includes a first device connected to an inductor. The first device includes a first silicon carbide (SiC) junction gate field-effect transistor (JFET), a first SiC schottky barrier diode (SBD) connected to a gate and a drain of the first SiC JFET, and a first silicon (Si) transistor connected to transmit current to a source of the first SiC JFET. An inductor input terminal is connected to the drain of the first SiC JFET.

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