ORDERING INFORMATION. See general marking information in the device marking section on page 11 of this data sheet. DEVICE MARKING INFORMATION. 1. A Switching Voltage Regulators are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for A Switching Voltage. DESCRIPTION. The MCA series is a monolithic control circuit delivering the main functions for DC-DC voltage converting. ORDERING INFORMATION.
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Oh ok, they also include home made boot strap drivers, which is a nice change. The board above was adapted to now become a high efficiency smart charger for a 6v battery. From what i have read now some dont work and some do, so it’s a toss up.
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All the simulations always show at least some deviation from the normal ripple. What other 30463a options does the tablet have? That would be nice to see too and i could compare with my notes. It’s basically discontinuous, or very close to it, and quite erratic looking.
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Let me elaborate just a little. Hmm, if you want to use bluetooth for data interfacing to the tablet there are lots of cheap bluetooth modules on ebay, just watch out as some are just the “module” but need a carrier PCB which means you need to make a PCB, some are a fraction more expensive but have the carrier PCB included togther with the module.
That would be very cool, especially if it was just the one USB lead. I was wondering if you might have some notes on this or if not if you would be interested.
The Tablet load could be represented by a load that changes in value like a lower to higher resistance and then back again depending on mode of operation either strictly running the device or both running and charging or just charging, and if charging what state the battery is in.
I’ll have to dig out my parts and build up dztasheet breadboard too next. These are stacked so to get battery voltage it reads the current then subtracts that reading from the voltage to give true battery voltage.
12v to 5v DC high efficiency SMPS buck converter using 34063 IC.
No way around it. It went together pretty quick in about an hour, I think it took a couple more to write it up and photos, scan the schematic etc. But you may want to go with Bluetooth if you are interested. Hi MrRB, That’s one goal yes, with the overall goal being able to monitor just about any process, and to start with to use the Tablet as a general purpose test bed for other plug in test equipment starting with a four channel volt meter.
34063A PDF Datasheet浏览和下载
Since the efficiency is datashdet percent at 1 amp out this should work nicely. What i’d like to do is use the Android Tablet the same way, even if it means creating new software for the Android environment rather than Windows. Unfortunately, I can’t draw the circuit in my phone and won’T be back home until the 2nd of Jan.
Right now i have constructed quite a while back actually a four channel ‘meter’ that can measure voltages and with some simple interfaces can measure current too. But what it doesnt do is read RS I added a brass angle shim and large sloder blob to cool the PFET which now never gets much warmer than body temp.
Inspriation come from ETO member Mr Al who mentioned his interest in a high efficiency 5v supply to power his Tablet PC during power blackouts etc, see his thread here; http: Hi MrRB, Oh yeah pretty nice!
It does support Bluetooth. So with the parts values I chose it was peaking on the current limit and in sync with the inductor ripple and the internal oscillator. But thanks anyway and maybe i’ll use something from it. Personally I would prefer that to any RF comms as it will be higher datarate, simpler and probabl more reliable.
Well, i am aware of how a peak current limit works in regulators but that’s not really the kind of regulation i would need for this project. The small Datxsheet computers make an exceptionally nice base for a number of different pieces of test equipment, a multi channel datxsheet meter just one example.
But also it would be nice to be able to use that BASIC language as that would give me the ability to change the program even if im not near to a PC to do actual Android programming Java or whatever. I started a new thread about this subject a few days ago: This language allows quick changes right on the Android Tablet so i can set up different things quite easily. The dqtasheet problem i am having now is interfacing my circuit to the Tablet because my Tablet doesnt have Bluetooth.
Media New media New comments Search media. BTW, when you look at the output waveshape for a while do you see any quick jumps once in a while? I was thinking satasheet an entire inverted scheme, but this looks interesting too. So the bottom line is an interface to the Tablet that allows various uC based test equipment to connect and use the Tablet as display and eventually control input too. To participate you need to register.
Hi MrRB, Well, i am aware of how a peak current limit works in regulators but that’s not really the kind of regulation i would need for this project. Is your goal to get your smart charger to send comms data to the tablet to display all the charging stats on the tablet screen?
I’ll read it and see what it has to offer then get back here with some comments. You might be able to get similar specs in something convenient like a TO pack but since it doesn’t need heatsinking you could datasjeet any package really. To Fernando; thanks for pointing out the TI appnote on gat edriving, I downloaded a copy. I take it you can write tablet apps like a program dtasheet display the voltages? Hi Mr Datasneet, thanks.
This would be easier to see with a wider time period for looking at the output ripple dqtasheet. With efficiency like that it looks well worth looking into for this kind of project. The circuit for this buck converter is nothing original, basically it is the circuit from the IC datasheet, and all I did was to use an external PFET instead of the external PNP transistor shown in the datasheet.