Embedded Systems Conference
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.



Radio
NEXT UPCOMING BROADCAST

As we unveil EE Times’ 2015 Silicon 60 list, journalist & Silicon 60 researcher Peter Clarke hosts a conversation on startups in the electronics industry. Panelists Dan Armbrust (investment firm Silicon Catalyst), Andrew Kau (venture capital firm Walden International), and Stan Boland (successful serial entrepreneur, former CEO of Neul, Icera) join in the live debate.
Flash Poll
Top Comments of the Week
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Special Video Section
The LTC®4015 is a complete synchronous buck controller/ ...
10:35
The LT®3042 is a high performance low dropout linear ...
Chwan-Jye Foo (C.J Foo), product marketing manager for ...
The LT®3752/LT3752-1 are current mode PWM controllers ...
LED lighting is an important feature in today’s and future ...
Active balancing of series connected battery stacks exists ...
After a four-year absence, Infineon returns to Mobile World ...
A laptop’s 65-watt adapter can be made 6 times smaller and ...
An industry network should have device and data security at ...
The LTC2975 is a four-channel PMBus Power System Manager ...
In this video, a new high speed CMOS output comparator ...
The LT8640 is a 42V, 5A synchronous step-down regulator ...
The LTC2000 high-speed DAC has low noise and excellent ...
How do you protect the load and ensure output continues to ...
General-purpose DACs have applications in instrumentation, ...
Linear Technology demonstrates its latest measurement ...
10:29
Demos from Maxim Integrated at Electronica 2014 show ...
Bosch CEO Stefan Finkbeiner shows off latest combo and ...
STMicroelectronics demoed this simple gesture control ...
Keysight shows you what signals lurk in real-time at 510MHz ...