 It's that time This week's I on MPI is from Nordic one of our favorite companies Lidia to what is the I on MPI brought to you by did you key This week. All right, so I'm wearing my Nordic shirt because last time I did in Nordic We've done a couple rules. We wear the shirts and they were like, hey Can you wear an order? I'm wearing a particle shirt because particle uses Nordic, but they were like they send us shirts Okay, so this week's I MPI is from Nordic They emailed me actually and let me know about this new prize. They're coming out with I was like, okay This is pretty cool. So this is the n PM 1 1 0 0 So you probably know Nordic for their wireless stuff. They're Bluetooth though energy And their short hop mesh wireless networks, of course We use the nrf 52 840 and the circuit playground blue fruit If you use a micro bit or other blue food boards, you've seen us use the nrf 51 the nrf 52 832 The nrf 8001 ancient blue to the energy chip but was you know at the time a great thing because it was SPI to Bluetooth and If we check out this is from I fix it the air tag from Apple He uses if you see on the left there if you zoom in it has an nrf 52 832 so obviously you know these they're very well known for their wireless Bluetooth chips. That's also now cellular. They're doing some cellular and One of the things that you notice quite quickly when you are dealing with Bluetooth and the nrf series is that folks that are using these chips need them to be Very low power like low power usage is something that's really important to people Because your chances are you're doing cellular, so it's battery powered. You're doing BLE, so it's you know battery powered and a lot of these things especially like this air tag they send data Once in a while not often and then they go to sleep in between so you know power management is something that's very important and I think Considering that their last product that they sold was that we featured was the power Profiler 2 It's clear that there's a lot of customers that are using Nordic chipsets And are having difficulty with like getting the performance and battery power that they're expecting right they read the specifications They're like oh it can do you know this many micro amps or nano amp sleep heck I'm not getting that in Nordic has to sort of reply and say well You know you have to measure all of your power usage You have to go to sleep mode and you have to you know use this kind of converter and this your quiescence being lost here and there Obviously the PPK 2 was a tool that they were using in-house and also their customers were using to try and analyze You know what are the power uses of their circuits and I got this from their presentation on the NPM 1100 when they're saying look it sounds it might seem a little unusual that we're doing a power Management chip and that's what the PM 1100 is but actually isn't because we are a power management I see company a lot of the stuff we do is power management Yes, we we do Bluetooth and we do Wi-Fi or we do cellular and we do arm course But inside of those we have Power management systems because again we have to have such deep sleep modes be able to wake up do a measurement Advertise Bluetooth and go back to sleep and last for a very long time on a coin cell So the NPM 1100 is it's kind of a three-in-one Power management chip so the PM is for NPM is for Nordic power management 1100 I don't know. It's the first one. It's really the first one and you know revision zero zero. So inside starting from the left there's a USB to battery charger So he takes USB power and why USB C or USB micro B or whatever and it can charge a battery You can change here. It says a 400 milliamp battery charger, but it's actually adjustable It's up to five 400 milliamps, which is a fairly chunky battery Most people use hundred or fifty to a hundred to 200 you can of course tune it down, but it can do linear battery charging And then on the top right it can give you Unregulated power out from the USB or battery So that's good for powering like your radio or like some LEDs or whatever high power stuff that you need where the higher voltage the better and then at the bottom there's a Buck DC DC converter that'll give you 150 milliamps out So not a ton, but enough to run your wireless in a couple of accessories Maybe they'll display some buttons OLED what have you a couple sensors and it's also adjustable 1.8 to 3.0 volts 3 0 volts out and here is The schematic, you know, I grabbed from their Vell board, you know design they have a couple designs where they're like here copy the design for usage So one thing to note for this chip is that everything is pin strapped So you'll note On the left there's like I see HG pin and V term Those are the two pins that you use to select whether it's a 4.2 or 4.1 Voltage lipo battery and the charge current as well and on the right you see some LED outputs But everything is basically pinstrap. So you don't use I squared C to program it You use resistors and and GPIO pins if you want to configure it top left You can see there's the D plus D minus pins are like what's up with that that's used So they can detect whether you know what current the charger can supply because you know Apple uses the D plus and D minus pins and that's a standard to Indicate how much current can be drawn. So it will respect that current if you connect those pins up I mean basically to 301 you've got your You know USB input regulated output DC DC unregulated output and battery charger And it's really small right? It's all in one and so instead of having maybe two Chips or three chips you have one chip and here it is showing with the Basically the capacitors a couple of 402 resistors to set the charge current and such most of the pins are just strapped and then there's an inductor for the buck converter And so they did a case study in the presentation They showed look you know if you go from a buck converter usually is bigger and more expensive But because we kind of combo it with your LiPo charger You kind of get a two for one It's the same price is just having one of the other but with the DC DC even though It's bigger what you see the bottom right there. This the solution is 23 millimeter squared instead of You know a simpler Low dropout regulator, which is 12 millimeter and then because it doesn't need the inductor however, your battery life is double because You can squeeze more Current out especially if you're going to buck down to like two volts two point two volts You know the Nordic chips can run very nicely at those at those voltages You can suck more current out of that battery You're drawing less current out of the battery and you can go to much lower voltages So it's you know, yes, it's designed to be used with the Nordic chips Obviously, they're they're promoting it for use with the nrf series chips 91s the 53s the 52s, however, I'll say this chip is not just for use With those dev with that their chipsets you could of course use it with any chipset It is agnostic to the wireless just you know, they're they're branching out into a new thing It's meant as a sister product to their existing lines But I don't think any way you should think oh, I can only use it with Nordic Now you can use this with any project you want that You know may need adjustable voltage output Has a lipo battery that it's charging and you want to kind of have oh another thing that it's very nice about this Is it has a ship mode so it can go into ultra low quiescent current the quiescent current is usually about like 800 nano ampere typical, which is quite low But it can go to half that in ship mode So when you ship out a product to somebody you don't want it running But you also probably don't have it on off switch because that's not very common to have anymore In this case you can use a button or a GPIO to get out of ship mode to wake up the regulator And and don't don't drain your battery out completely So when people get the product it's basically ready to use the moment you get it So that's the bottom buttons there. All right, not only is this efficiently is efficient But did you can get this to you efficiently and it's in stock? Yeah, I'm trying to do the NPI's that are available in stock and this one is in stock So you could pick this up the NPM 1100 and then CAA. There's also an eval board which we showed the photo of Here Fast So that's it. This is the solution. So maybe I'll use them. I'll use this zoomer. There you go So that's the this is the full solution This is the chip You need some input and output capacitors obviously because you're you want to have capacitors on the battery charging on the input to the But converter. This is the inductor. It's a little chip scale inductor and capacity on the output, but that's it It's a small CSP Scale chip and then you can use zoom out more zoom in Down here. There's a little flippy switches. You can use to select. It's a very nice little eval board I'll note that this battery. I believe is the reverse wired from how eight-foot batteries are wired Just looking for the ground pin. So just watch out for that check the Documentation before you plug in one of our batteries. All right. That's my own PI this week