Car-building fantasies | Read PI automotive electronics information and share your thoughts on car-building!

EEWORLD社区

Car-building fantasies | Read PI automotive electronics information and share your thoughts on car-building! [Copy link]

 

In the global energy-saving car competition Shell Eco-Marathon, hundreds of student teams compete every year with their self-developed energy-saving cars. They do not race, but challenge to complete the track with the least amount of energy. The concept car of the UP Dagisik team sponsored by PI successfully passed the pre-race vehicle inspection and participated in the competition.

I believe that many engineers are fascinated by cars and are more interested in making cars! Read PI automotive electronics related materials and tell us what you think about making cars! Participate in the event to win a JD card!

Event time: From now until September 30, 2019

How to participate:
Step1. Click to enter >> [Event Details Page] , fill in and submit your participation information.
Step2. Enter the [Car Manufacturing Information] section of the page, read any car manufacturing information you are interested in, and open the [Comment Channel]!
Step3. Under this post, write down your views on car manufacturing! (The content needs to be related to the car manufacturing information~)
Step4. After the event, we will select 60 excellent comment awards from netizens who have carefully filled in the participation information, and give each of them a 50-yuan JD card .

Gift display:

ths9366

Brushless DC motors (BLDC) are increasingly used in home appliances and consumer electronics because of their higher efficiency and reliability than brushed motors.

zyh9366

Power Integration's integrated half-bridge motor driver product family offers excellent efficiency and a distributed cooling architecture that eliminates the need for heat sinks, helping to reduce system cost and weight. Very good!

hk386

The variable speed DC drive motor can be built with a simple circuit, and the input can be controlled by a small potentiometer or a 3.6V-10V power supply to meet the entire design needs, saving space and cost for development, and debugging is also much simpler.

szy123

The BridgeSwitch integrated half-bridge motor driver product series launched by Power Integration integrates two performance-enhanced FREDFETs (field-effect transistors with fast recovery epitaxial diodes) for the upper and lower tubes of the half-bridge circuit respectively, and has a lossless current detection function, which can achieve an inverter conversion efficiency of more than 98.5% in brushless DC motor drive applications within 300 W. The excellent efficiency and distributed heat dissipation architecture provided by this product series can save heat sinks , helping to reduce system cost and weight.

In this paragraph, it is said that the heat sink can be omitted. Is it true or false? In actual applications, are there any applications that do not use a radiator? Especially in automobiles, which have high requirements for stability, are there any actual application cases? Such technology is still worth promoting. The efficiency of electricity use will always be an issue of concern for products, especially electric vehicles.

qditz

Here are some characteristics of "brushless DC motor":

Brushless DC (BLDC) motors are quickly becoming the natural choice for applications that require high reliability, high efficiency, and high power-to-volume ratio. These motors provide a large amount of torque over a wide speed range and have similar torque and speed performance to brushed motors.

The BridgeSwitch family of integrated half-bridges from Power Integrations greatly simplifies the development and production of high-voltage inverters for two-phase or three-phase PM motor or BLDC motor drives. It integrates two high-voltage N-channel power FREDFETs with low- and high-side drivers in a small package. The internal power FREDFETs use ultra-soft, ultra-fast diodes suitable for hard-switching inverter drivers. Both drivers are self-powered and require no external auxiliary power supply. BridgeSwitch provides a unique transient phase current output signal to simplify the implementation of sensor-less control schemes. The low-profile surface-mount package with a small footprint allows for increased creepage distance and heat dissipation of the two power FREDFETs through the printed circuit board.

BridgeSwitch provides internal fault protection and external system-level monitoring. Internal fault protection includes cycle-by-cycle current limit for two FREDFETs and dual-level thermal overload protection. External system-level monitoring includes DC bus monitoring with four undervoltage levels and one overvoltage level, as well as driving external sensors such as NTCs. A bidirectional bus-based single-wire status interface reports monitored status changes.

tomjianchun.xu

The highly integrated power conversion solution launched by PI can reduce the circuit loops within the power supply, which helps to reduce noise and can significantly reduce the number of MLCCs. This can help us a lot. The shortage of MLCCs every year is a headache for our supply chain. Hurry up and download the information to study it carefully.

skywalker_lee

The flyback power supply requires the error signal amplitude of the duty cycle to be relatively low, and the gain and dynamic range of the error signal amplifier are also relatively small. Based on these advantages, the flyback power supply is still widely used in the field of home appliances. Whether this will make the power supply of the multimedia entertainment system of the car more standardized and universal in the future in the automotive industry, we still have to wait and see.

大秦正声

Now more and more countries are starting to develop electric vehicles, which require efficient brushless motors and charging pile equipment to greatly reduce exhaust emissions and achieve green environmental protection.

xiaoweiqq

PI's electric vehicle drive solution has the following features

1 Low impedance : BridgeSwitch IC uses 600V low on-resistance RDS(ON) FREDFET and integrates fast ultra-soft recovery body diode.

2 Strong anti-interference ability: It also helps to significantly reduce switching losses and reduce noise generation, thereby simplifying system-level EMC design.

3. Less temperature rise: For motor drive applications of several hundred watts, even a small improvement in inverter efficiency can have a significant impact on system temperature rise and energy savings.

4 Comprehensive protection scheme, easy to transplant and apply: This driver IC also has perfect system-level protection. The upper and lower tube current limit points of each BridgeSwitch device can be set separately, so that the microprocessor and related peripheral circuits can be used to provide protection for the entire system in the event of an open or short circuit in the motor winding. It can also be connected to the microcontroller through a simple digital interface to achieve two-way fault and status communication. In addition, this driver can completely use the high-voltage bus to achieve self-power supply, thus eliminating the need for the dual-output auxiliary power supply and corresponding bootstrap diode required in traditional applications, which can greatly simplify the circuit and reduce system costs.

5 Simplified design: This system does not use sensors and adopts the Toshiba TMPM375 microprocessor. The reference design scheme of FOC control method can achieve an efficiency of up to 98%. The development board supports third-party MCUs, and the reference design scheme of trapezoidal control or sinusoidal control method can still achieve a full load efficiency of more than 98%.

6 Wide application: BridgeSwitch devices are suitable for refrigerator compressors, HVAC system fans and other household and light commercial pumps, fans and blowers. It has great advantages in home appliances and automobiles.

xiaozhuang

PI's ultra-wide input (57-580 VAC) flyback power supply solution StackFET structure (cascode), StackFETTM (superposition field effect transistor) proprietary technology and flyback topology can output rated power within an extremely wide input range. The AC input voltage can be 57~580V single-phase AC, or three-phase four-wire (A, B, C phases and neutral line N) AC, and it can work normally even if one phase is missing or the neutral line is not connected. High efficiency The efficiency can reach 50% when the bus voltage is 500V, and the conducted EMI is low. It is lower than the standard line within 100MHz frequency. StackFETTM flyback topology outputs full power within an extremely wide input range E-ShieldTM transformer structure reduces common mode EMI (>10 dBV margin) 66 kHz switching frequency and frequency jitter reduce conducted EMI Simple ON/OFF controller-no feedback compensation required Automatic restart function: self-recovering open-loop, overload and short-circuit protection Built-in 135 C hysteresis thermal shutdown

linghz

The BridgeSwitch series is a high-voltage self-powered half-bridge motor driver with integrated device protection and system monitoring. This product greatly simplifies the development and production of high-voltage inverter 2/3-phase PM or BLDC motor drives. The fully integrated half-bridge stage has an efficiency of up to 98%, and no external heat sink is required when rated continuous RMS current. The device integrates a 600V N-channel power FREDFET and an ultra-soft fast recovery diode, providing internal fault protection and external system-level monitoring.

zxw1126

The SCALE-iDriver family of single-channel IGBT and SiC-MOSFET driver ICs uses Power Integrations' innovative FluxLink magnetic-inductive bidirectional communication technology to ensure reinforced insulation between the primary and secondary sides, setting new standards for insulation integrity and reliability. FluxLink technology eliminates the need for optoelectronic devices, whose parameters change over time and high temperature derating limit their service life. By embedding magnetically coupled conductors in a uniform thermoset material, high-quality insulation greatly improves the operating stability and service life of the device. The new device uses Power Integrations' compact and rugged eSOP package, which provides 9.5 mm creepage distance and electrical clearance of CTI level 600, and easily meets the automotive-grade 5500 meter altitude requirements.

xiahe

Ultra-wide input range (57-580 VAC) flyback power supply, the calculation and winding of the transformer is still very difficult!

zwjiang

The key to electric vehicles is the three electrics: motor, battery, and electronic control.

rayn18

SCALE-iDriver devices are ideal for automotive applications that require rugged and reliable performance over an extended temperature range of -40°C to +125°C. They offer enhanced safety due to integrated desaturation detection and advanced soft shutdown features, and are the only isolated drivers qualified for high altitude, providing 531V reinforced insulation at 5000m altitude.

ttttt-5t

Cars are always being repaired. How can we improve their stability?

zhengzhirui

The parameters are really good, saving heat sinks and space can simplify the design! The emc performance is also good, but I am worried that it will not be allowed to be used and the supply will be cut off

皈依

Electric vehicles are a major trend in the future. Based on the concept of environmental protection, efficiency is a very important part.

In electric vehicles, there are a lot of voltage conversions, and the biggest power consumer: the motor, so the efficiency of these parts is very critical.

Ultra-wide range input (57-580 VAC) flyback power supply and high efficiency dual output buck converter provide basic power for electric vehicles.

Brushless DC motors (BLDC) are increasingly used in home appliances and consumer electronics because of their higher efficiency and reliability than brushed motors. As efficiency standards for these applications become increasingly stringent, more advanced power conversion techniques are also required to reduce power losses and simplify design.

The BridgeSwitch integrated half-bridge motor driver product series launched by Power Integration integrates two performance-enhanced FREDFETs (field-effect transistors with fast recovery epitaxial diodes) for the upper and lower tubes of the half-bridge circuit respectively, and has a lossless current detection function, which can achieve an inverter conversion efficiency of more than 98.5% in brushless DC motor drive applications within 300 W. The excellent efficiency and distributed heat dissipation architecture provided by this product series can save heat sinks, helping to reduce system cost and weight.

All of these provide very good solutions for energy saving and high efficiency of electric vehicles on the basis of ensuring reliability.

wangwei0952

After reading these materials from PI, I roughly know the core components of electric vehicles, including power supply, battery charging, DC brushless motor drive, inverter, etc. These are what PI specializes in. The future will definitely be a huge opportunity for the development of electric vehicles.