A Detailed Review On Output Voltage Trimming 

Introduction

Trimming the yield voltage of a power unit means fine-tuning the voltage by a trivial amount. By resolution, the term trimming is used for purposes whereby the power supply unit has a quantified nominal yield current.

Output voltage trimming lets the user modify the yield voltage of a unit. This will significantly improve the units’ functionality by permitting a couple of select typical units to be applied to virtually any usage irrespective of the voltage prerequisites.

This permits the unit users to decrease the quantity of models that are held in stock. Some power units are accessible with the output voltage detailed as a range instead of an ostensible value.

These kinds of power units usually are labelled as adjustable, variable, or lab power supplies. This review will in detail discuss the likely applications for trimming as well as some of the safeguards to observe and pit in place when using these power supplies

What Are the Likely Applications of Voltage Trimming?

Eradicating the Need for Remote Sense

Yield trimming can be utilized rather than remote sense when the vast current change is restricted, and the voltage decrease amongst the converter and burden is fairly continuous.

System Testing

Regularly, it’s useful to test system activity with the power supply voltage – ordinarily, the +5V voltage set primarily at one extreme than at the other end.

Any circuitry that doesn’t perform correctly under these manufacturers’ test settings could likewise fizzle under conditions present in the user’s setting. Running tests marginally helps ensure a problem-free system process.

Acquiring Non-Standard Yield Voltages

When a non-standard yield voltage is essential, it could be accessible by trimming the yield voltage of a unit with a yield voltage that comes close to the ideal voltage. Though the published data sheet limits are binding for the definite modification range, lesser output voltages are ordinarily accessible using the trim feature.

Lessening the Quantity of Stocked Models

when two yield voltages are vital, for instance, 24V and 28V, one model could supply both by utilizing the trim feature to set the lesser voltage.

What Precautions Should You Take?

Sensitivity to Noise

The TRIM pin is commotion sensitive. Exterior resistors (either variable or fixed) should be situated within one centimeter of the converter. If cabling is needed, use turned or insulated cables.

Connect Trim Resistor to Sense Leads Instead of The Output Leads

The trim resistor should be linked to the sense leads instead of the output leads or the load. Or else, the load current variations could cause the converter’s trimmed yield voltage to fluctuate.

Balance Output Voltage to Output Current

If the yield voltage is amplified, the yield current should be lowered to evade surpassing the module’s max output power. If the yield voltage is reduced, the yield current is restricted to its max ranking, and the accessible yield power will diminish.

Change Range Limits

Now and again, the yield voltage can be trimmed outside the definite modification range. However, datasheet specs are only binding within the stated current range.

Final Thought

All in all, power supply trimming units offer a cost-effective means to include self-testing competence to high reliability and high-performance systems. These systems are very simple to design and interact with. If you have any questions regarding this topic, please do not hesitate to contact the Ideal Power Team.

If you require more information regarding Output voltage trimming & Trimming the output voltage, or need help with finding the right power supply for your project. Please do not hesitate to contact us.

Click here to contact us today!