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06.12.2022 7:39:23
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Power Integrations Bundles New Three-Phase BLDC Control Software into Motor-Expert Suite for BridgeSwitch IC Family
Hardware-Software Solution for Three-Phase BLDC Motor Inverters Enables Greater Than 98 Percent Efficiency, Saves PCB Space and Speeds Time-to-Market

Embedded World – Power Integrations (NASDAQ: POWI), the leader in high-voltage integrated circuits (ICs) for energy-efficient power conversion, today unveiled new control software for three-phase BLDC motor drives. Combined with Power Integrations’ BridgeSwitch™ integrated half-bridge motor driver and easy-to-use Motor-Expert™ configuration and diagnostics tool, this complete hardware-software solution enables 98.2 percent efficiency, reduces board space by more than 70 percent and requires just three components for current feedback circuitry, compared to 30 components in a discrete solution. The solution is ideal for residential and commercial appliances with three-phase motors, such as air conditioner fans, high-speed hair dryers, refrigerator compressors, range hood fans and water pumps.

“Traditional three-shunt field-oriented control (FOC) solutions require expensive and bulky operational amplifiers (op-amps) and matching circuity for motor-current signal conditioning,” states Cristian Ionescu-Catrina, senior product marketing manager for Power Integrations. “Our BridgeSwitch integrated half-bridge ICs provide lossless current feedback for the positive half cycle, and our three-phase FOC software reconstructs the negative half-cycle current information from data present in the other phase current signals. This eliminates the need for costly and inefficient external current sense resistors, op-amps and matching circuitry and the associated complexity.”

Power Integrations’ new software adds three-phase FOC to the existing library of single-phase code. It allows real-time adjustment of motor speed and torque via the Motor-Expert graphical user interface (GUI). The code runs on any Arm® Cortex®-M0 at 48 MHz and does not require a hardware accelerator block. It can also be ported to other equivalent MCUs. The current modeling algorithm is robust and reliable and has passed extensive static and dynamic test conditions, including low latency response to real-time events. The high degree of current accuracy ensures low jitter operation. The new code is MISRA C-compliant (Motor Industry Software Reliability Association), portable, modular and allows the user to modify any of the software layers.

How Three-Phase Motor Control Works with BridgeSwitch ICs

Power Integrations’ BridgeSwitch ICs provide a motor current output signal that maps the current passing through the low-side FREDFET. An internal sense-FET provides lossless current sensing. The sense circuit cannot provide current information when the anti-parallel body diode is conducting during commutation. Built-in gain amplification allows direct connection of the current phase signal to the microcontroller ADC input. The local sense circuit provides an accurate analog of current with a high signal-to-noise ratio and a correspondingly high degree of accuracy. The new software includes a reconstruction algorithm that uses the phase-shifted trigonometric relationship between current signals of all three phases to accurately deduce negative phase-current information.

Updated Motor-Expert Design Tool

Motor-Expert 2.0 is Power Integrations’ easy-to-use motor control configuration and diagnostics tool for the BridgeSwitch IC family. It provides a GUI allowing easy manipulation of input parameters, as well as a terminal emulator for interacting with the motor controller in serial mode. In addition, a motion scope feature displays linear graphs of important controller variables that can be viewed in real time.

Ionescu-Catrina adds: “Precise control, tuning and optimization can take months of software development. Power Integrations created Motor-Expert 2.0 with the design engineer’s needs in mind. The new tool reduces the cost and complexity of BLDC drive design and works with the newly released three-phase motor control software and reference design DER-964 to offer a complete tool for motor drive development.”

Motor and application tuning is performed through the Motor-Expert 2.0 GUI with control loop coefficients being updated in real-time without having to recompile code. The interface also enables users to visualize system operation, displaying the status of data, including current, speed, status, current error, and speed error. A diagnostics field within the software interface provides insight into inverter and motor operation.

Motor-Expert 2.0 supports three-phase and single-phase motor drive design and replaces the previous version of Motor-Expert.

Availability & Resources

A new three-phase inverter reference design employing three BridgeSwitch integrated half-bridge ICs, DER-964, provides up to 300 W output power without requiring a heatsink. It removes the shunts and op-amps seen in conventional feedback measurement and is suitable for a wide range of applications, such as compressors, range hoods, residential and commercial fans and pumps. The design is 98.2% efficient, occupies a 65 mm x 50 mm PCB and can be used with any Cortex-M0 or equivalent microcontroller.

The complete BridgeSwitch, Motor-Expert 2.0 and three-phase motor control software solution is available today and includes a downloadable manual for the software architecture, APIs, functions, calls and variables used in the code.

The new three-phase motor control code and Motor-Expert 2.0 tool are offered as part of the Motor-Expert Suite under a free license for use with BridgeSwitch ICs. BridgeSwitch ICs are priced starting at $1.69 in 10,000-unit quantities of the chipset. For further information, contact a Power Integrations sales representative.

2022062701 / 27.06.2022 / Automatizace průmyslu / Power Integrations /

Power Integrations Delivers AEC-Qualified Buck Switcher IC with 850 mA Output for Low-Part-Count Automotive PSUs
LinkSwitch-TN2Q supports 30-550 VDC input with integrated system-level protection

Power Integrations Bundles New Three-Phase BLDC Control Software into Motor-Expert Suite for BridgeSwitch IC Family
Hardware-Software Solution for Three-Phase BLDC Motor Inverters Enables Greater Than 98 Percent Efficiency, Saves PCB Space and Speeds Time-to-Market

Power Integrations’ New MinE-CAP IC Reduces Volume of AC-DC Converters by Up to 40%
Novel MinE-CAP device dramatically reduces the input bulk capacitor size, reduces in-rush current by up to 95%, eliminates NTC thermistors and associated losses

Power Integrations Demonstrates Continued Industry Leadership as InnoSwitch IC Sales Surpass One Billion Units
Newest GaN-based devices provide up to 100 W of power and support applications from USB PD adapters to auxiliary power supplies for appliances

Power Integrations Targets Compact Smart-Lighting Designs With Highly Efficient GaN-Powered LYTSwitch-6 LED Drivers
Enables dimmable 90 W LED ballasts in an isolated flyback topology following a boost Power Factor Correction (PFC) stage

Power Integrations Releases Highly Integrated InnoSwitch3 Flyback Switcher IC for Automotive BEV and PHEV Applications
InnoSwitch3-AQ achieves Q100; operates efficiently from 30 V to 550 V DC input

LinkSwitch-TN2 High-Voltage Switcher ICs from Power Integrations Now Certified for Automotive Use
High-reliability, space-saving buck/flybackswitcher ICs target 400 VDC EV applications

Power Integrations’ GaN Technology Increases Output Power of High-Efficiency Display PSUs to 75 W
Power Integrations announced that its InnoSwitch™3-MX isolated switcher IC family has been expanded with the addition of three new PowiGaN™ devices. As part of a chipset with Power Integrations’ InnoMux™ controller IC, the new switcher ICs now support display and appliance power supply applications with a continuous output power of up to 75 W without a heatsink.

Power Integrations’ SCALE-iDriver for SiC MOSFETs Achieves AEC-Q100 Automotive Qualification
Compact and robust isolated SiC MOSFET driver incorporates active clamping and <2 µs short-circuit turn-off time

Power Integrations Expands Range of InnoSwitch3 ICs Incorporating Robust 750 V GaN Transistors
PowiGaN technology permits manufacture of 94% efficient power supplies suitable for regions with frequent brown-outs and line surges

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Adresář


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Alliance Memory


Intelliconnect (Europe) Ltd.


KIOXIA Europe GmbH


Antenova Ltd


Friedrich Lütze GmbH


Analog Devices


ASRock Industrial


NVIDIA


ECOM s.r.o.


Yamaichi Electronics USA Inc.


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