is it possible to boost 1V to 5V?

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geppei

Joined: 20 Apr 2006
Posts: 31

04 Jul 2006 4:16 1v to 5v

is it possible to use a DCDC to boost up 1V to 5V?

IanP

Joined: 05 Oct 2004
Posts: 6490
Helped: 1542
Location: West Coast

04 Jul 2006 4:35 5 volts to 1 volt

Of course, it is possible ..

Quote:

The LT®1308 features an onboard switch capable of handling 2A with a voltage drop of 300mV and operates from an input voltage as low as 1V.

http://www.linear.com/pc/downloadDocument.do?navId=H0,C1,C1003,C1040,C1055,P1185,D4383
Other place to look in is the Maxin-IC website ..

Regards,
IanP

farshidjh

Joined: 02 Nov 2005
Posts: 16
Helped: 2

04 Jul 2006 5:17 5v to 1v

Also , Check these out :
http://focus.ti.com/general/docs/lit/getliterature.tsp?literatureNumber=slva063&fileType=pdf
http://www.commsdesign.com/new_products/showArticle.jhtml?articleID=16504757
http://www.tuleriit.ee/progs/rlv_osc.php

Farshid

Fragrance

Joined: 26 Jul 2002
Posts: 1385
Helped: 24

04 Jul 2006 5:35 how to boost 1v

the best is texas instrument TPS61042 can bost voltage upto 30 volt from 1 volt input

regards
Fragrance

polymath

Joined: 02 May 2006
Posts: 236
Helped: 23
Location: England

04 Jul 2006 11:34 1.5v to 5v boost

Fragrance
I think 1V0 input might be too low for TPS61042
and 30v0 too high for output:

Vin(Min)(V) 1.8
Vin(Max)(V) 6
Type Inductive
LED(#) 6
LED Configuration Series
Switch Current Limit(Typ)(A) 0.5
Over-Voltage Protection(Min)(V) 28
Peak Efficiency(%) 85
Iq(Typ)(mA) 0.038
Shutdown Current(Typ)(uA) 0.1
Switching Frequency(Max)(kHz) 1000
Topology Boost
Iout(Max)(A) 0.03
Operating Temp Range(Celsius) -40 to 85
Pin/Package 8SON

regards ... Polymath

Iouri

Joined: 17 Aug 2005
Posts: 687
Helped: 79

04 Jul 2006 17:01 obtain 5v from 1.5v

not sure what you are trying to do. What is your source, what is power rating are you expecting to get, please provide more details.

Good Lack!!!

PaulHolland

Joined: 15 Jan 2003
Posts: 636
Helped: 59
Location: Holland

04 Jul 2006 18:05 how can i drop 1 volt from 5 volts?

Hi, No problem. I even boosted 0.2 Volts to 8 Volts DC at 30mA, with simple components no SMPS IC's or something like that.

Paul.

CMOS

Joined: 06 Jan 2004
Posts: 810
Helped: 39
Location: USA

04 Jul 2006 19:22 1,5v transistor boost

Try MC34063, 1.5A Step-up/down switcher. There is a online design tool which will let you to calculate component values
http://www.nomad.ee/micros/mc34063a/index.shtml

Epegic

Joined: 29 Mar 2002
Posts: 89
Helped: 3

08 Jul 2006 4:36 power boost 1 volt

PaulHolland wrote:

Hi, No problem. I even boosted 0.2 Volts to 8 Volts DC at 30mA, with simple components no SMPS IC's or something like that.

Paul.

Could you please give more details of your design, including cirucit diagram and may be some construction details.

I had built 1.5V to 5V booster with transistors but cannot get more than 20mA.

movingbait

Joined: 23 Apr 2004
Posts: 49
Helped: 4

08 Jul 2006 8:41 boost from 1 v to 5 v

JFET-based dc/dc converter operates from 300-mV supply
http://www.edn.com/article/CA6335301.html?spacedesc=designideas&industryid=44217

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08 Jul 2006 8:41 Ads

PaulHolland

Joined: 15 Jan 2003
Posts: 636
Helped: 59
Location: Holland

09 Jul 2006 11:35 booster 2,5 volt

Hi,

I used the following components:

BSS138 N-MFET
Coil of 220uH
and 22uF Capacitor.
Diode low drop fast type any will do. Vt=0.23 V

I used a frequency of 1 MHz and dc of 60- 80 %.

Normal step-up topologie

regards,

Paul.