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DC/DC Step up for powering a solenoid , suggestions?

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Dear Sir/Madam

I would like to use a TI step up DC-DC power supply to power my Solenoid and would like some advice on my approach.

My application is batter powered application. 

My power source is Li-poly batteries, these are rated 4.2V 2000mAh.  (8.4W)

The solenoid are rated to 9V 1.3A. (11.4W)

The solenoid require short pulses of 200ms.

Therefore i need to generate 9V 1.3A, from the battery.

But as the solenoid only requires a 200mS pulse, would i be able to design the circuit so that i do not need a very high output current device? Maybe with larger capacitors?

If i am correct even though the solenoid is rated 9V 1.3A, but the current consumption of the device at 9V will very minimum (within few mA) due to a pulse of 200ms?

What is the best approach?

Regards

DJ


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