Power Device Driving Apparatus With Isolated Supply Units

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Solution Overview

Problem

Existing power device driving circuits face inefficiencies when driving multiple power devices in parallel, as they often require different drive voltages, leading to wasteful power consumption due to the use of a single voltage for all devices.

Innovation Solution

The implementation of a power device driving apparatus with isolated power supply units generating distinct supply voltages for each power device, allowing drive circuits to output drive signals at appropriate voltages tailored to individual devices, thereby reducing power wastage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a single power supply unit supplies the same voltage to all power devices, then the device complexity is reduced, but power consumption increases due to inefficient driving of devices with different voltage requirements

Engineering Contradiction:

Improvepower supply unit configurationVSAvoidpower consumption

Core Design Contradiction:

Device complexityVSUse of energy by moving object

Solution Approach 1:

The power supply system is segmented into multiple isolated power supply units (first isolated power supply unit, second isolated power supply unit, etc.), each independently supplying a specific voltage to corresponding drive circuits. This segmentation allows each power device to receive precisely the voltage it requires, eliminating wasteful power consumption while maintaining manageable system complexity through modular architecture.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Each isolated power supply unit provides a locally optimized voltage level tailored to the specific requirements of its associated power device. The first isolated power supply unit supplies a first voltage suitable for the first power device, while the second isolated power supply unit supplies a second voltage suitable for the second power device, ensuring optimal efficiency for each component without compromising overall system performance.

Inventive Principle:

Principle #3Local quality

2Use of energy by moving object

If different voltage levels are supplied to different power devices, then power consumption efficiency is improved, but the device complexity increases due to multiple isolated power supply units

Engineering Contradiction:

Improvepower consumption efficiencyVSAvoidpower supply configuration

Core Design Contradiction:

Use of energy by moving objectVSDevice complexity

Solution Approach 1:

The power supply system is divided into distinct isolated power supply units, each responsible for generating and supplying a specific voltage level. This segmentation enables efficient power delivery to each power device according to its requirements, improving overall power consumption efficiency while organizing complexity into manageable, independent modules that can be controlled separately.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Each isolated power supply unit functions as a universal building block that can be configured to provide the appropriate voltage for different power devices. The modular design allows the same basic power supply architecture to serve multiple devices with different voltage requirements, reducing the overall complexity compared to designing custom power supply solutions for each device.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If drive circuits are separately provided for each power device, then the adaptability to different voltage requirements is improved, but the device complexity increases

Engineering Contradiction:

Improvevoltage adaptabilityVSAvoiddrive circuit configuration

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The drive circuit system is segmented into separate drive circuits, with each drive circuit dedicated to controlling a specific power device. This segmentation provides high adaptability to different voltage requirements, as each drive circuit can be independently configured and optimized for its associated power device's specific characteristics and voltage needs.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Each drive circuit is locally optimized to match the specific requirements of its associated power device. The first drive circuit is configured for the first power device's voltage requirements, while the second drive circuit is configured for the second power device's voltage requirements, ensuring maximum adaptability and efficiency for each component pair.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS10998887B2Power device driving apparatus

Publication Date: 2021.05.04 DENSO CORP

AI summary

A power device driving apparatus drives a plurality of power devices including first and second power devices. In the apparatus, a plurality of drive circuits are separately provided for at least the first power device and the second power device and output drive signals to the respective power devices. The isolated power supply includes a first isolated power supply unit that supplies a first supply voltage, and a second isolated power supply unit that supplies a second supply voltage that is different from the first supply voltage. The plurality of drive circuits includes a first drive circuit that uses the first supply voltage supplied from the first isolated power supply unit to output the drive signal to the first power device, and a second drive circuit that uses the second supply voltage supplied from the second isolated power supply unit to output the drive signal to the second power device.