Dirk.S
New Member
Hello everyone
I'm a bit stuck. I've just been browsing RS Components' website for boost converters over the past few days to try and find the correct one that will suite my needs.
I've had a look at the TPS61175 from Texas Instruments which states that it has got a 3A, 40V internal switch. When I look at the max ratings then it shows that the switch can handle 3.8A Nominal and 5A max.
Since I need my output to be at 9V and to be 2A or 2.5A I've calculated accordingly and found that I should use a 0.47 uH inductor to be able to get 2.6954A out at 9V but further down in the data sheet they say that you shouldn't use an inductor with a range below 4.7 uH. So it means that this device wont support the output current that is required.
I've browsed now to try and find boost converters that will be able to deliver a 2A output but with a 3.7V input it doesn't seem that I'm having any joy.
I'm trying to boost a 3.7 V li-ion battery voltage to 9V to drive a solenoid, the solenoid is the BERMAD Model S-402-3W-BB, it is a 9 - 40 V dc latching solenoid, the coil resistance is 6 ohm meaning if I supply it with 9V then the solenoid will draw 1.5A for a period of 20 - 100ms. I must also use a 4700 uF cap to handle the current spike according to the solenoid datasheet.
Any suggestions from anyone as to how I can accomplish a 2A / 2.5A output from a boost converter boosting from such a low voltage?
I'm a bit stuck. I've just been browsing RS Components' website for boost converters over the past few days to try and find the correct one that will suite my needs.
I've had a look at the TPS61175 from Texas Instruments which states that it has got a 3A, 40V internal switch. When I look at the max ratings then it shows that the switch can handle 3.8A Nominal and 5A max.
Since I need my output to be at 9V and to be 2A or 2.5A I've calculated accordingly and found that I should use a 0.47 uH inductor to be able to get 2.6954A out at 9V but further down in the data sheet they say that you shouldn't use an inductor with a range below 4.7 uH. So it means that this device wont support the output current that is required.
I've browsed now to try and find boost converters that will be able to deliver a 2A output but with a 3.7V input it doesn't seem that I'm having any joy.
I'm trying to boost a 3.7 V li-ion battery voltage to 9V to drive a solenoid, the solenoid is the BERMAD Model S-402-3W-BB, it is a 9 - 40 V dc latching solenoid, the coil resistance is 6 ohm meaning if I supply it with 9V then the solenoid will draw 1.5A for a period of 20 - 100ms. I must also use a 4700 uF cap to handle the current spike according to the solenoid datasheet.
Any suggestions from anyone as to how I can accomplish a 2A / 2.5A output from a boost converter boosting from such a low voltage?