 Hi, I'm NPI. Hi, I'm NPI Roger. Bye. Did you key an A to fruit this week? Is NPI on, Lady Aida? What is this week's NPI? OK, this week's NPI is from Infineon, which I don't know if we've heard them before. It's this 14-pin SOIC chip. I'm going to get the part number right. It's the XDP-201. It's a hybrid flyback controller. The particular slash new, like the featured product on digikey.com slash new was about an eval board they have for this chip, which we'll talk about more in a bit. And this board takes AC power from the left, and it converts it to a high current DC power on the right for charging batteries. It's an evaluation board for large battery charging. It also features the cool MOS, MOSFETs with ultra low RDS on. It looks like they have a cool MOS. They're so cool. They are in this AC-DC converter. Bam, just like that. Well, there's only two of them. There's five in this particular image. But yeah, it's an AC-DC converter chip that is a hybrid flyback and uses also Infineon MOSFETs and also there's an eval board. So it's a 3-in-1 ion NPI. So what this board, this eval board in this chip is part of is Infineon's full from beginning to end documentation and support and product line for light vehicles. Also known sometimes as micro mobility or e-scooters, e-bikes, mono wheels, balancing scooters and stuff. And if you're like us in New York City, you've probably seen a ton of these devices. E-bikes are really, really popular, especially over COVID-2020. In mid-2020, they were legalized. They were previously banned, but then they were allowed because so many people were doing delivery. They weren't using cars. They weren't using public transport. They were using e-bikes and e-scooters and skateboards and mono wheels. And so we see a lot of people with these battery-powered micro mobility devices. And they're great because they don't have gas and they don't need parking. You can put them in your backyard or you can bring them up to your apartment or leave them outside the house or whatever and lock them up. You don't need to park them. You can just go in the bike lane. They don't go very fast, maybe 10, 15, 20 miles an hour. I just wore a helmet and you can zip around pretty quickly in the city. So they're very handy. A nice intermediate where you don't want to own a car. You don't want to get into a taxi but you also it's a little bit too far to walk. But in order for them to carry you and your groceries and the 75 pound bike itself it can easily get to 200 pounds. And so these things have really, really big batteries. They have about 250 watt batteries, maybe more 36 to 48 volt batteries. In comparison, this is a 10 amp hour eight, basically 10 amp hour times 3.7 volts. So this is maybe a 35 watts. Our battery and the ones we're talking about here are 10, 15 times larger. And they tend to have like 15 to 25 to 30 of these standard 18, 650 batteries. And you have to charge them very fast and they have to discharge very fast because especially as you throttle up and you want to kind of go up a hill, carrying you and your bike and all your stuff they're gonna have to discharge a lot of current. And then of course discharge a lot of current to be very big, which means when you charge them you have to have a big charger and that makes them kind of dangerous. They are very big, highly dense energy sources. And in New York City, especially we've had a couple of fires and people not charging their batteries safely. So it's really, really important to pick and design a really good charger. If you're in a company and you are the electrical engineer you're working on designing a product that uses these high density batteries. You wanna make sure that you are getting your design certified. It's low heat, so it doesn't overheat. It's high efficiency, so again less dissipation. It's UL certified, it's well heat synced. It does a good job and it plugs only one way into the battery and it doesn't electrocute people. So there's all these things about batteries but also the charger has to be well designed and that's what this converter from Infineon is and the valve board is all about is how to charge these batteries. So these batteries you need to, again they're 150 watts and they're 48 volts. So you need to basically have something that gives you mains power, AC, directed DC. You're not gonna be able to do a DC, AC to DC conversion and then boost up to get that wattage. You basically have to go straight to the wall and because of that you're dealing with mains power so you want to be safe, you wanna use something like a flyback converter that has isolated output. See that transformer in there gives you isolation so there's no risk of the hot or the neutral accidentally touching the metal case of the battery or the metal case of the bicycle, which can be very bad. Also of course sparks could cause fires. So having current limiting and isolation is important but there's some trade-offs with flyback converters which is that they tend to be really big and they're not good at lower voltages. They're good at like high voltages especially if you wanna boost up voltages. Here we're kind of bucking down. We're going from like 100 to 48 or 32 or maybe 220 to 48, 32. And so that's where we've got this design for a hybrid flyback controller. So this hybrid controller, what's neat about it is it's very small, it's inexpensive and it's a very, very high efficiency, 95%. So you get the efficiency that you would expect from your kind of standard DC-DC buck converter operating at its best input-outputs optimized configuration but this design is flexible about the input. You can drive it from 110 or 220 depending on whether you're in Europe or in North America. And it can handle different output voltages as well which could be handy as you're charging this battery, the battery starts to lower, it gets a little bit higher or maybe you wanna support different size battery packs with one PCB design that you just tweak the configuration. So it's a little bit more complicated than just a flyback but what's really nice is that the chip, the XDPDS2201 has all this stuff built into it. One thing for example, it has the MOSFET drivers built in it has a little mini booster inside that helps you drive with the high side and the low side MOSFETs. You don't need a separate driver chip for those really, really big MOSFETs. It does stuff like keep track of your zero voltage and zero current switching. You don't wanna switch the AC on and off in the middle of a cycle. You wanna do it when it does the zero crossing and so this chip kind of does all that for you. So it's kind of got the simplicity of your standard analog flyback or DC buck converter, AC-DC converter but it's also got this enough smarts inside that it can give you stuff like failure codes out of a UART pin. It can also give you, you can program the configuration via this pin into a one-time programmable EEPROM for setting and fixing design and it's been used in eval boards that they've created. They have eval board for USB PD that can give you as well as five volts out to 20 volts and then of course this version which gives you 32 to 48 volts. I'll admit I'm not a big power and electronics designer. I didn't take that class in school and I haven't done a lot of high voltage power design but Infinity and Desk was a really great webinar like it's not a webinar it's like a slideshow webinar I guess and there's a person who speaks and there's a lot of slides and they actually kind of go through and explain what's the difference between the flyback, your classic DC-DC converter and this hybrid feedback specifically what it's really good for is it's more efficient because not only is current starting to transform or like most flybacks or in the capacitor like most buck converters but it switches between the two depending on whether you're at a low input voltage or high input voltage. And then the cool thing about this X DPS 221 is that of course it can handle both. This is the basic app note for the layout of this chip. You'll notice that you do need transformers, you do need voltage into, you have to power the chip and so you'll see that full wave rectifier. It's very low current power draw a quiescent it's like only like 25 or 50 milliamps but you still need to have some DC voltage in but then the output from the primary coils go in into the chip which then controls these two fats. There is an opto isolated feedback input so that the output voltage is controlled just good because if you're charging a battery you wanna get it close to the open circuit voltage of the battery maybe a little bit higher and then the internal charging circuitry doesn't have to burn off all that excess voltage as heats. And there's also these built-in parameters. So you can tweak the settings, the day she goes into all the settings of like your startup delay and like burst delays and what inductor size and what's current and your voltage output and all that stuff. You can configure it with these parameters. There is a pin on there called the multifunction IO pin and I guess it's asynchronous UART. They have a programmer dongle you can use to rewrite it and what's really nice is it also outputs failure codes which is like kind of handy. This is a non-trivial power supply. If you're designing something that you're going to have people who are in a rush they wanna charge the battery and it's not working, why isn't it working? Maybe there's overheating or there's a timeout or a disconnection or something mechanically goes wrong. You could probably have on your little charger at least an error code that tells people hey look in the manual, look on the website to see what is wrong with your setup because these batteries and these chargers can be fairly expensive. Like I looked at prices of e-bikes and they're a thousand to $3,000. They're not cheap. So the more you information give people you don't want them to throw out the batteries or charge them unsafely if it's not a good time to charge them if it's too hot or too humid out or too cold or if the voltage is too low or you're getting an over voltage or over temperature. So all those outputs come on the UART mode and then you would read them from a microcontroller and display them on an LCD or LED. And this is part of a big family of products. So Infineon does a lot of stuff for micro-mobility. They do microcontrollers, of course these FETs that charge controllers but they'll also probably do your motor drivers and such as well. So check out they have like a gigantic section of their site where you can like go to each part of an e-bike or e-scooter you wanna design this sort of stuff and they'll hook you up so you can do it safely. And stop. That's right. These chips are in stock. They also have the valve boards in stock but this chip in particular the X DPS 2201 you wanna do something flyback style high voltage AC to DC this chip can probably do it for you. Okay, I'll have a video, we're gonna play it and then we'll see you on the other side for some new products. Introducing industry first application specific standard product based on asymmetric half bridge flyback topology with Infinion's latest hybrid flyback controller X DPS 2201 to enable ultra high density charger design. It consists of a few major building blocks. A main stage and a PWM controller on the primary side a rectification and communication protocol on the secondary side. X DPS 2201 converts and delivers power over an isolated barrier in an efficient and safe manner. Targeted application includes smartphone charger, adapter and USB PD charger. Bill of material savings and ease of design with an integrated high voltage startup cell and high side MOSFET gate driver to yield a potential saving of up to 20 external components. Multimode operation across varying load and line input conditions delivers high peak and average efficiency. Simplified and low cost transformer design with a single auxiliary winding to support variable output voltage requirement. Infinion has developed a USB PD charger solution housed in an ultra compact PCBA form factor. The solution supports a maximum output power of up to 65 Watts delivering a class leading power density of 31 Watts per cubic inch. As a leader in power semiconductor the 65 Watts solution incorporates cool MOS, up to MOS PD, communication protocol controller and hybrid fly back controller X DPS 2201 to deliver a high efficiency of up to 93.8% to miniaturize your next charger design. For more information please visit our website www.infinion.com slash X DPS 2201.