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Small, efficient buck-boost for portable industrial equipment
Almost every portable system needs a 3.3V rail. And for those systems powered by single-cell lithium batteries, there is always a question of how to make this rail. Stepping up the battery voltage...
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Smaller, more efficient power banks coming your way!
Power banks can be indispensable on a long flight or during a long meeting if you need to recharge your smartphone’s or tablet’s battery. Having previously charged up your power bank, you efficiently...
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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...
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Is inductor ripple current as a percentage still relevant in low-power...
Power-supply designers have used various forms of Equation 1 for decades in order to select the correct inductance for their step-down (buck) converters. While Equation 1 is still correct, why should...
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Extend the life of your coin cell with boost + bypass operation!
Picture this--You are designing your company’s latest and greatest water meter and have been asked to increase its battery’s run time by 10% over the previous model. This is now the fourth product...
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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.
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How can you deliver 1W power from a 10 mW coin cell?
For a smart meter or any other system that needs to wirelessly transmit data, the challenge is the same. How do I deliver Watts of power to my radio, while using a small, robust, and extremely...
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...
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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 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...
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...
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Power your Bluetooth speaker with less
We all like to take our music with us on MP3 players. And since the invention of the boom box, many of us like to share our music as well. Shrinking the size of the boom box without sacrificing...
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...
View ArticleLDO for Vin(max)=10V~15V，Vout=3.3V，Io(max)=0.3~0.5A，SMD package，operating...
Hi Team,my customer is looking for the LDO for below operation condition, do you have any suggestion for this application?Vin(max)=10V~15V，Vout=3.3V，Io(max)=0.3~0.5A，SMD package，operating...
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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...
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A super-small, high-efficiency PMOLED reference design for wearables
Now you’ve seen it for yourself: a complete reference design for a wearable subsystem. Figure 1 shows a passive matrix organic light-emitting diode (PMOLED) display powered directly from the TPS61046...
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Why do you need a 5.5Vin buck-boost in a car?
An automotive-qualified buck-boost converter that’s only rated to 5.5VIN? With a 12-V car battery, you can’t connect the buck-boost to the battery. So who needs such a buck-boost converter? It turns...
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