What is the range of the Würth Elektronik GmbH & Co. KG " Wireless Power Transfer Solution To Go" solution ?

hemmerling over 11 years ago

Hello,,

What is the range of the WÜRTH " Wireless Power Transfer Solution To Go" solution

http://www.we-online.de/web/en/electronic_components/produkte_pb/demoboards/wireless_power/wireless_power_1.php

It is shipped with

5V, Qi Compliant Wireless Power Transmitter Manager Evaluation Module

http://www.ti.com/tool/bq500212aevm-550

and

BQ51013BEVM-764 WPC 1.1 Compatible Fully Integrated Wireless Power Receiver IC Evaluation Module

http://www.ti.com/tool/bq51013bevm-764

Must be transmitter and receiver be together as known from "charging stations",

or might the power transmission work for about 100 cm, like known from Enotion powerswitches ?

My design challenge application needs this distance of 100 cm...

What is the operating RF frequency of the devices ?

I did not find any clues in the TI documents...

I don´t mean the clock speed of of an optional or included microcontroller..

If I see right, there is no microcontroller included in the set?!

If so, do you think that it would be a good idea to add a MSP430 board for controlling the application :-)?! ( I am used to program it ).

Sincerely

Rolf

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0 sleuz over 11 years ago

This might be of some help for you:

DE
Wer misst, misst Mist - or measuring the performance of the wireless demo kit

ENG
self.clue++ : Measuring the performance of the wireless power demo kit

Simon
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0 hlipka over 11 years ago in reply to sleuz

btw: there are updated version of my measurements in english and german available.
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0 mcb1 over 11 years ago in reply to hlipka

You have a great table.
I wonder if you could add the efficiency when the various coils are NOT displaced.

Its very interesting that the 'ebay' electronic receiver performance is not as good, and something a table isn't go to show.

Well done
Mark
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0 hlipka over 11 years ago in reply to mcb1

Actually, these number are already there. I just was not clear about them. When looking at the current draw, the lowest value is the one with no displacement. The larger the displacement, the higher the current consumption. So the first number for the current, and therefore the first number of the efficiency, is the one with no displacement.
I will update the articles accordingly, to make that clearer.
Regarding the ebay receiver: with lower loads (and small distances) its efficiency is better. With higher loads it goes to about par. With larger vertical distances it also gets better, also with higher displacement. OTOH its adaptive power management seems not as good, and it needs lower distances to pick up a connection.
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0 hlipka over 11 years ago in reply to mcb1

Actually, these number are already there. I just was not clear about them. When looking at the current draw, the lowest value is the one with no displacement. The larger the displacement, the higher the current consumption. So the first number for the current, and therefore the first number of the efficiency, is the one with no displacement.
I will update the articles accordingly, to make that clearer.
Regarding the ebay receiver: with lower loads (and small distances) its efficiency is better. With higher loads it goes to about par. With larger vertical distances it also gets better, also with higher displacement. OTOH its adaptive power management seems not as good, and it needs lower distances to pick up a connection.
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