Site icon Circuit Ideas for You

Step-Up Converter Circuit: 6V to 15V Boost Regulator

The Step-Up Converter Circuit: 6V to 15V Boost Regulator is made to turn a 6V DC input into a powerful 15V DC output using the smart IC LM2585 switch mode regulator chip.

The IC LM2585 is a fantastic chip designed for boosting voltage.

You can use it in lots of different ways, like in flyback converters, boost converters, forward converters and systems that need several outputs.

One best thing about this chip is that it has a built-in switch that can handle currents up to 3A.

This makes it super useful when you want to get higher voltages from a lower voltage source.

Circuit Working:

Parts List:

Component TypeSpecificationQuantity
Resistors56k 1/4W1
4.7k 1/4W1
2.7k 1/4W1
CapacitorsElectrolytic 680µF 25V1
Electrolytic 220µF 25V1
Ceramic 0.1µF2
SemiconductorsLM2585 IC1
Schottky diode 1N5820 Diode1
Inductor22µH1

The IC LM2585 is a special kind of device called a switching regulator that increases the input voltage from 6V to 15V.

The working of the circuit is mentioned below:

When the internal switch in the LM2585 is turned on electricity flows through a part called an inductor L1, which saves energy in its magnetic field.

When the switch turns off the energy stored in L1 creates extra voltage that adds to the input voltage.

This makes the diode D1 work, sending energy to the output capacitor C1.

This capacitor is super important because it helps keep the output voltage steady at 15V DC and capacitor C4 is for input voltage.

To make sure the output stays at a constant 15V, a feedback system with resistors R1 and R2 changes how long the switch stays on and off.

The circuit also has capacitors C2, C3 and C4 to help with filtering and stability which reduces voltage changes and makes the system respond better to any changes.

Formulas with Calculations:

Below are the formulas with calculations for Step-Up Converter Circuit: 6V to 15V Boost Regulator:

Output Voltage Calculation:

The output voltage vout is determined using the feedback resistor divider equation:

vout = vref * (1 + R1/R2)

where,

substituting the values

vout = 1.23 * (1 + 56k/4.7k)

vout = 1.23 * (1 + 11.91)

vout = 1.23 * 12.91

vout = 15.87V

Approximating the output voltage is around 15V DC

Inductor selection:

The inductor l is selected according to the suggestions in the LM2585 datasheet and the needed output power.

When the switch is on the inductor collects energy and when the switch is off it releases that energy.

The usual formula for calculating inductance is:

l = (vin – vswitch) * d / (fsw * ipeak)

where,

d = 1 – vin/vout

d = 1 – 6/15

d = 1 – 0.4

d = 0.6

How to Build:

To build a Step-Up Converter Circuit: 6V to 15V Boost Regulator follow the below mentioned steps:

Conclusion:

This Step-Up Converter Circuit: 6V to 15V Boost Regulator is an easy and efficient method to increase a 6V DC input to a steady 15V DC output using the LM2585 integrated circuit.

It works well, needs only a few parts and is great for things like battery operated devices, car electronics and portable gadgets.

You can also tweak the output voltage by changing the resistor divider network to fit your specific needs.

References:

LM2585 4-V to 40-V, 3-A Step-Up Wide VIN Flyback Converter

Exit mobile version