What Do Smart Meters, Electric Cars and Notebooks Have in Common? Diotec Knows the Answer!
Renewable energy needs smart metering and control.
Smart meters provide not only digital reading but are prepared for the future of energy control: They will tell to your home appliances but also electric car (EV) connected to the wall box when there is enough energy to consume or when it's better to save it. When it comes to renewable energy, either too much or too little energy is available. Smart meters can compensate for this.
Diotec’s latest development is the SM4000, a 1 A / 4000 V SMD rectifier for smart meter input stages, connected directly to the public mains. Common standards require a surge voltage of 6 kV, and the usually inserted mains filter reduces this value to about 2 kV. Available 2000 V rectifiers are "at the edge" under this load. Therefore, two of such diodes are placed in series to increase safety margin. Here our SM4000 comes into play: It offers - in a single package - a VRRM of 4 000 V and thus a comfortable "built in" safety margin. Instead of using 16 diodes in a typical smart meter input stage, the amount of components can be reduced to eight.
Input rectification and saving space at the same time? It’s a breeze. And all with no compromise in safety margin.
E-Mobility reduces local emissions and can provide energy storage.
In times of climate change and the necessity of reducing CO2 emissions, e-mobility is indispensable. But did you know that new concepts include electric vehicles (EVs) as energy storage on demand? Most of our cars are driven for a short time in the morning and evening, but are parked for the rest of the day. If connected to an intelligent, bidirectional charging station, they can be used to store wind energy during the night, or solar energy during the day. If the battery is full, the energy is partly fed back to the grid and can be used. Discharge stops of course at a defined point to keep enough range for your daily drive, or when there is not enough renewable energy in the grid. All controlled by a smart meter system, knowing exactly the demand and availability of energy.
Did you know that EVs still use the traditional 12 V battery system on board? It is used to disconnect and control the high voltage battery from the drive during parking, and supplies all the common electric systems for convenience, light and sight.
Diotec's new Dual Power MOSFET DI028N10PQ2-AQ is a space saving solution for the synchronous rectifier in the DC-DC converter between high and low voltage battery. Two N channel types in a single PowerQFN5x6 package require just 5 mm x 6 mm of board space. Both types provide 100 V of drain-source voltage, 28 A of continuous drain current and also logic level gate drive capability.
Our MOSFET is not only important for the reliable function of EVs during the drive, but also while the e-car is parked, when it could serve as mobile energy storage.
ESD protection of computer interfaces is more important than ever.
Whenever a human being touches a computer interface, there is a high risk of damage by electrostatic discharge (ESD). Everybody knows: After walking across a carpet or driving a car and then touching a piece of metal – you are likely to get a more or less heavy electric strike. For us human beings this is just unpleasant, but electronic systems like notebooks, car charging systems, displays of smart meters can be damaged afterwards. While a damaged notebook is annoying, creates costs and waste, but could be replaced rather easily, a defective charging system or smart meter can cause critical situations.
Consequently, ESD protection plays an important role. Diotec's ESD9L1P8 is a protection device and comes in the tiny SOD-882/DFN1006 package outline, measuring just 1.0 mm by 0.6 mm². It is rated for +/- 30 kV according to IEC 61000-4-2 air discharge/human body model (HBM). Stand-off voltage is 1.8 V and clamping voltage typically 4.3 V at 5 A peak current (8/20 µs pulse); junction capacitance is below 30 pF at 0 V and 1 MHz. All these parameters make the tiny but powerful diodes suited to protect low voltage, high speed signal lines and interfaces on the smallest footprint.
It is obvious: Our modern world is challenging, but there are always exiting, new solutions on the way to reduce emissions, to use more and more renewable energy and to create reliable, long-lasting equipment and thus to reduce waste. Diotec has been supporting designers with dedicated and state-of-the-art discrete semiconductors for 50 years - with the clear commitment to proceed its success story.
Contact us:
Application Support
E-Mail technicalsupport@diotec.com
Phone +49-7634-5266-0
Commercial and Samples
Phone +49-7634-5266-0
