Breaking News
Comments
Newest First | Oldest First | Threaded View
Tom Van Breussegem
User Rank
Author
re: Microwatt charge pump boosts 1V to 1.8V at 90% efficiency
Tom Van Breussegem   10/13/2011 9:15:20 AM
NO RATINGS
OK, thanks for clarifying this, indeed nice design considering the low output power.

MartinT@Sageloop
User Rank
Author
re: Microwatt charge pump boosts 1V to 1.8V at 90% efficiency
MartinT@Sageloop   10/12/2011 7:15:41 PM
NO RATINGS
(.. continuing).. the calcs are right, the overhead losses are very low and the output voltage is higher than 1.8V at light loads (1.8V is min). - Martin

MartinT@Sageloop
User Rank
Author
re: Microwatt charge pump boosts 1V to 1.8V at 90% efficiency
MartinT@Sageloop   10/12/2011 7:05:24 PM
NO RATINGS
You're right Tom- but efficiency approaches 90% asymptotically for 1.8V out, and the 1.8V is minimum V at max load (higher at lighter loads). General point trying to make is that it seems one can build a reasonable simple pump oscillator with these sub-uA op amps. Thanks.

Tom Van Breussegem
User Rank
Author
re: Microwatt charge pump boosts 1V to 1.8V at 90% efficiency
Tom Van Breussegem   10/11/2011 7:29:52 AM
NO RATINGS
It seems that you made an error in calculating the efficiency. The maximum theoretical efficiency of a voltage doubler turning 1V into 1.8V is allready 90%. So the additional losses of the peripheral circuitry degrades this even more.



Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Like Us on Facebook
Special Video Section
5G LTE is on the way. These systems will require more ...
Protecting sensitive electronic circuitry from voltage ...
09:45
Watch as a web server authenticates or rejects a water ...
Protecting sensitive electronic circuitry from voltage ...
Watch as a web server authenticates or rejects a water ...
Protecting sensitive electronic circuitry from voltage ...
Power can be a gating factor in success or failure of ...
Get to market faster and connect your next product to the ...
00:44
See how microQSFP is setting a new standard for tomorrow’s ...
The LTC3649 step-down regulator combines key features of a ...
Once the base layer of a design has been taped out, making ...
In this short video we show an LED light demo to ...
The LTC2380-24 is a versatile 24-bit SAR ADC that combines ...
In this short video we show an LED light demo to ...
02:46
Wireless Power enables applications where it is difficult ...
07:41
LEDs are being used in current luxury model automotive ...
With design sizes expected to increase by 5X through 2020, ...
01:48
Linear Technology’s LT8330 and LT8331, two Low Quiescent ...
The quality and reliability of Mill-Max's two-piece ...