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Integrated circuit device with linear voltage regulator and internal switch mode voltage regulator

A technology of voltage regulators and integrated circuits, which is applied in the direction of adjusting electric variables, output power conversion devices, measuring devices, etc., and can solve problems such as input power loss and energy waste

Active Publication Date: 2017-05-17
MICROCHIP TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, up to 45% ((3.3V-1.8V) / 3.3V=45%) input power loss converted to heat by the linear voltage regulator can occur
Furthermore, this energy waste can be significant in any battery operated device

Method used

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  • Integrated circuit device with linear voltage regulator and internal switch mode voltage regulator
  • Integrated circuit device with linear voltage regulator and internal switch mode voltage regulator
  • Integrated circuit device with linear voltage regulator and internal switch mode voltage regulator

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Embodiment Construction

[0021] In particular, battery-powered integrated circuit devices (eg, microcontroller (MCU) applications) need to minimize power consumption. While an external voltage regulator can be provided, this solution is often not acceptable in terms of space and cost requirements. Furthermore, devices using this low internal core voltage can only be used with integrated linear voltage regulators, which can lead to reduced battery life. Therefore, a more efficient external regulator may not be useful.

[0022] An integrated circuit device such as, but not limited to, a microprocessor or microcontroller may be provided with a switched mode power regulator, such as an internal buck regulator. This switching voltage regulator can be designed to be very efficient. Internal switch mode voltage regulators can be designed to require only minimal external components such as inductors and bulk capacitors. All other components such as power transistors and control circuitry can be integrated,...

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Abstract

The present invention provides an integrated circuit device having: a digital device (600) operating at an internal core voltage (Vint); a linear voltage regulator (510); and an internal switching mode voltage regulator (180) composed of the The digital device controls and receives an external supply voltage (Vext) higher than the internal core voltage through at least first and second external pins (140a, 140b), and generates the internal core voltage, wherein the internal switching mode voltage The regulator is coupled to at least one external component (182) via at least one other external pin (140c) of the plurality of external pins.

Description

technical field [0001] The technical field of the present application relates to integrated circuit devices, in particular to microprocessors or microcontrollers having two voltage regulators. Background technique [0002] Integrated circuit devices with high integration factors are fabricated using special processing techniques. Such devices are increasingly taking up less space due to improved process technology. As process geometries decrease, the operating voltage, or core voltage, in such devices also decreases. While it is common to use supply voltages such as 5 volts, newer devices use supply voltages of only 3.3 volts or even less. With 0.18 micron process technology, the internal core voltage is 1.8 volts. Other techniques can reduce the voltage even further, for example to 1.2 volts. While circuit boards are typically designed to use 3.3 volts or 5 volts as a supply voltage, many integrated devices generate an internal core voltage of eg 1.8 volts, or even lowe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/156G06F1/26
CPCG06F1/26G06F1/3203H02M1/0045
Inventor 布赖恩·克里斯约瑟夫·W·特里斯克拉克·J·罗格斯彼得·席克
Owner MICROCHIP TECH INC