On March 18th, the 2014 Munich Electronics Show kicked off in Shanghai. The leading domestic and foreign manufacturers from different fields of integrated circuits, electronic components, components and production equipment were re-installed at the same time and formed in the electronics industry. More concentrated display advantages. The Xiaobian of E-Friends Network also visited the scene for the first time, bringing you the latest reports. As an event in the electronics industry, the product direction is quite diverse. According to observations, at this exhibition, several major factories are paying attention to information on automotive electronics, preparing for a new round of automotive electronics boom. . Freescale Introduces New Series of KineTIs EA Microcontrollers With the development of automotive technologies such as car networking and future autonomous driving, we are faced with the need for functional safety and security. Especially in the rapid development of China's auto industry, how to provide an easy-to-use development environment and software and hardware integration kits has become a top priority for automotive electronics manufacturers. As a long-time leader in the automotive chip industry, Freescale continues to innovate and introduce a new KineTIs family of MCUs based on the ARM Cortex-M0+ core for the automotive market. This revolutionary new development environment, combined with the ARM low-power core and the fine traditions of Freescale microcontrollers, enables automotive electronic component suppliers to achieve initial prototyping in as little as 24 hours. Of course, this advantage comes from the customer's familiarity with the ARM architecture. Target applications for KineTIs EA series controllers include seats, sunroofs, oil/pump systems; versatile body electronics such as body control, parking assistance, CAN/LIN nodes, interior lighting; The engine control system. It is believed that with this industry-leading technology and products, Freescale is bound to bring a new impetus to China's automotive electronics. IR CooliRFET - MOSFET platform for high current applications in automotive electronics In automotive electronics, in addition to focusing on the IC field, discrete components such as MOSFETs and IGBTs are also an important aspect we need to focus on. IR Corporation from the United States is the leader in such discrete devices. According to 2012 data, IR's automotive power MOSFET share has reached 11% of the total automotive power device share. All of this is due to its range of leading FET platforms. Starting with the Gen 5 FET in 2003, IR continues to update its platform to improve its product quality and market share. With the Cool iR FET, IR has made great strides in this area with its price competitiveness, good avalanche performance and industry Benchmark Rds(on). Typical applications for the current Cool iRFET 40V include, but are not limited to, automotive EPS (electric power steering) start-stop systems, pump motor control. Let's take a look at the specific embodiment of IR in these applications: The IR product is applied in EPS, which can promote the improvement of fuel efficiency. At the same time, with its 3-phase driver AUIR3235, it can greatly improve the anti-interference of the pre-driver, fully protect the gate output, and accurately diagnose the FET state of the inverter. The application can improve the fuel efficiency at startup when the system is started, and the IR MOSFET and driver IC AUIR3240S composite solution can make the switch have a lower transient current when opened ("50μA"; Pump motor control applications, IR talks about MOSFET and 3-phase driver AUIR3231 composite solution, while significantly improving fuel efficiency, significantly improving the anti-jamming capability of the pre-driver, with programmable dual output current, extremely large The layout of the PCB. In the near future, IR will launch Cool iR FETs to introduce more efficient products to a wider market. Ling Lier's concern in car LED light drive Since 2008, Audi first used LED width lights on the A4, first turning on the era of automotive LED headlights. As a traditional power supply manufacturer, Linear Technology spares no effort to promote the upgrading of its products in the automotive LED field to meet the growing demand for automotive LED lights. In the field of automotive LED power supplies, special concerns include: Use low EMI to avoid interference with video, audio and navigation electronics; LED current matching and accuracy (for multi-LED string circuits); The input voltage is higher or lower than the output; LED fault handling; We know that in the absence of spread spectrum technology, the following methods can be used to reduce EMI: Utilizes huge EMI filters Use a gate resistor to slow down the switching edge rate Shielding the switch and freewheeling diode The adverse effects of using these methods are the increased size, cost, and efficiency of the solution. Linear Technology's LT3795 solves this problem. According to the description, the chip can generate its own spread-spectrum ramp signal and align it with the lower-frequency PWM dimming input to ensure no LED flicker. LED current waveforms that do not use this chip are inconsistent cycle by cycle and produce appreciable flicker at high PWM dimming ratios. This chip also provides rugged output protection. TDK's wireless charging car: coils mounted on the road The development demand for green energy-saving has gradually promoted the development of electric vehicles. For such new energy vehicles, how to charge anywhere and anytime has become a problem that all EV power providers need to consider in the current situation that battery capacity has not been greatly improved. At this year's Munich Electronics Show, TDK demonstrated a wireless wireless charging concept for "magnetic resonance wireless power transmission technology" for EV/HEV. The principle is to make the power supply side coil transmit power to the power receiving side coil in an efficient wireless manner by utilizing the "magnetic resonance phenomenon". In order to achieve charging during travel, large coils are placed on the bottom of the road and the EV. During charging, TDK's unique "automatic adjustment circuit" scheme can prevent the extreme efficiency from deteriorating due to distance variation or positional deviation between the power supply side and the power receiving side, and achieve optimal power stable transmission. According to the introduction of TDK field staff, its "automatic adjustment circuit" has the following characteristics: 1: A simple, ground-loss drive circuit is realized by TDK's unique method; 2: Real-time response to distance changes and positional deviations 3: Power transmission range: Widely applicable to a wide range of small power (several W) ~ large power (tens of W). Therefore, in the case of EV wireless charging, the circuit can be automatically adjusted even if the parking position is deviated, and optimal power transmission is maintained. Since this is a charging concept of TDK, Xiaobian failed to get more efficiency and other data on the spot, but from the user's point of view, how to convince the government to lay such a coil road is also a first consideration.
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