negative adjustable voltage regulator require for electro-chemistry sensor
Hello Friends,I am working in the project of electro chemical potentiostat in which there are three electrodes used and I need to provide them very fine negative voltage from -1.0 to -0.6 with current...
View ArticleSurvey LDO compare TPS62730, TPS62740 function
Hi all,My customer evaluating Low Iq, Bypass mode and good light low efficiency application IOT.Vin Power source use AA battery 1.6V~3V, Vout 1.8V I suggest TPS62730, TPS62740 but not meet end customer...
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An easy-to-assemble power supply for optical modules
Optical modules are probably not the first system you might think of in the telecom infrastructure market. Because they’re so small, optical modules easily get forgotten – especially when compared to...
View ArticleValidation on Non-Linear Voltage Regulators
Hi,Can someone provide any ideas of the best method to validate non-linear voltage regulators? Impedance profile and Bode-plot used in traditional validation are useless when non-linear voltage...
View ArticleRegulator for micro SD card
Hi,I want to insert a micro SD card to my PCB. the circuit is powered by a 3V Li-MnO2 battery.I need to regulate the SD card to 2.7v.all the circuit components are regulated by TPS78222DRVR (2.2v)My...
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A much smaller boost converter for slightly smaller power banks
With smartphones and tablets growing in size every year, their battery capacities must also grow. Increasing the battery’s milliamp-hour (mAh) capacity provides the same or increased operating time at...
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BOM-optimize your vacuum cleaner!
In the consumer world with products, such as vacuum cleaners and white goods, the Bill of Materials (BOM) is extremely important. The broad array of products and companies designing those products...
View ArticleDriver selection for OSRAM GF CS8PM1.24
Hi,what could be an appropriate driver for OSRAM's LED GF CS8PM1.24 the power source is LiIon battery.
View ArticleValidation on Non-Linear Voltage Regulators
Hi,Can someone provide any ideas of the best method to validate non-linear voltage regulators? Impedance profile and Bode-plot used in traditional validation are useless when non-linear voltage...
View ArticleNeed help selecting a DC-DC LED driver
Hi,We are using the TPS62150 in a constant current configuration to drive a white LED up to 1A. Would like to know if there is a more efficient part.Spec's:Vin 2.8V-12VVout 3.0V @ 1A maxThanks,Paul
View ArticleHow to build a 2.5A constant current?
I used to make some constant current supplies such as LM3407, LM3406 driver but all of them below 1.5A. Is there a TI's IC met 2.5A or combinable ICs helped me do this?I'm designing a Cree-XML2 Drivers...
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Charging a Li Pack with an Alkaline Pack and Switching Between Them
Hello everyone,There are several applications where it is preferable to use alkaline batteries. But since they have high internal resistance, I was wondering if it was possible to use the alkaline pack...
View ArticleLooking for a combination of LiPO charger, gauge and buck/boost
Hello,I am looking for a power management solution for my uC board that has a 3.7 V LiPo power supply. I need a 3.3 V output with a max current draw of 500 mA, and a battery gauge, as well as a USB...
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Do all rails in an ultra-low power system need ultra-low Iq?
All designers of ultra-low power systems are concerned about battery life. How much time will elapse before the battery in a fitness tracker will need recharging? Or, for primary cell systems, how long...
View ArticleRecommended Gate Driver for digitally controlled Synchronous Buck NexFET...
Hello,I am designing a digitally controlled Synchronous Buck Converter. I have chosen CSD87352Q5D (NexFET Power Block) as the main and synchronous MOSFET. TMS320F28335 control card will be used as...
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How to keep your power switching frequency above the AM radio band
We’ve all been there before. After selecting a particular power-supply device, you build a printed circuit board (PCB) and evaluate it in your lab. You measure some basic parameters, such as efficiency...
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Are two inductors better than one?
Electronics’ continuous advancement into smaller devices with fewer and fewer components has been propelling the industry for decades. Notebooks and tablets, for example, are only possible due to...
View ArticleReducing current sense resistor value in TPS62150 LED driver
Hi,We are using a TPS62150 in CC mode to drive a white LED.Specs:Vin: 2.8-12VLED: Vf 2.6-2.9V, 300ma - 1A maxSS/TR pin connected to DAC to adjust LED forward current.In Application Report SLVA451 page...
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Easy supercap backup power for smart grid
Figure 1: Backup power lasts for 6.5 secondsEveryone wants reliable smart meters. Utility customers want them so that the utility knows exactly when there is a power outage without the customer having...
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An easy-to-assemble power supply for optical modules
Optical modules are probably not the first system you might think of in the telecom infrastructure market. Because they’re so small, optical modules easily get forgotten – especially when compared to...
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