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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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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 ArticleTPS62420 Settling Time
Require 1.85V for CC3200 in pre-regulated mode. Line and load regulation with less than 2% ripple, 500 mA step current and settling time of < 4 μs with the load step. Therefore changed from...
View ArticleLooking for LED Driver
Hi all.I am looking for LED Driver.My customer uses it the following condition.Vin:5VChannels:5 (1 straight & 5 parallel)LED current(typ): 8.5mA/chLED Vf: min:2.58V typ:2.8V max:3.16VControl:PWM or...
View ArticleTPS62150 SS/TR pin voltage for analog dimming
Hello,I am using a TPS62150 for driving a 1A led with analog dimming using SS/TR pin. The voltage applied to SS/TR is from 0 to 0.4V. This voltage is coming from a DAC 2.5V. A resistor divider 56K/10K...
View ArticleTPS62420 Settling Time
Require 1.85V for CC3200 in pre-regulated mode. Line and load regulation with less than 2% ripple, 500 mA step current and settling time of < 4 μs with the load step. Therefore changed from...
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Automotive Trends: Cameras in Every Car
One major trend that we’ve all noticed in automobiles over the past few years is the use of cameras-- for assistance when backing up. Just 10 or 20 years ago, such technology was unheard of in the...
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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.
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...
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...
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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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 ArticleLooking for LED Driver
Hi all.I am looking for LED Driver.My customer uses it the following condition.Vin:5VChannels:5 (1 straight & 5 parallel)LED current(typ): 8.5mA/chLED Vf: min:2.58V typ:2.8V max:3.16VControl:PWM or...
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