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Electronic Design Update


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Texas Instruments Reduce 300x250 Ed 033021 Kmr

Optimizing pinout and pin placement to mitigate EMI in your power supply design

Minimizing current loop area is one of the critical layout considerations when designing a low-EMI power supply. One factor that is often overlooked is the pinout of the primary contributor to system EMI, the DC/DC switching regulator. A thoughtful pin arrangement can make optimization of external component placement simple and highly effective towards minimizing EMI. Watch this video to learn more. 

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Texas Instruments Lmq61460 315x180 Ed 033021 Kmr

Along with pseudo-random spread spectrum and adjustable switch-node rise time, the new LMQ61460 36-V, 6-A buck converter also features integrated bypass capacitors to shrink di/dt loops and minimize EMI.        

Texas Instruments Lm61495 315x180 Ed 033021 Kmr

36-V, 10-A DC/DC buck converter optimized for power density and low EMI

Dual Random Spread Spectrum (DRSS) and an adjustable switch-node rise time make LM61495 an excellent choice for high-current industrial applications that require low EMI. 

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Texas Instruments Tpsm82810 315x180 Ed 033021 Kmr

6-V, 4-A Step-Down MicroSiP™ Power Module with Frequency Synchronization

The TPSM82810 buck module offers a simple approach to low EMI performance with its high integration, tight di/dt loops, and optional spread spectrum. 

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Designing a low EMI power supply

TI’s compendium of EMI mitigation resources includes overviews of conducted and radiated emissions standards, educational material related to on-silicon technologies to limit EMI, and training materials that detail how to address EMI with components external to the IC. 

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Reducing high-frequency EMI with integrated capacitors

Now we know that minimizing current loop area is a great way to minimize EMI. So, what better way to shrink that input current loop than to put CIN inside the IC? Watch this video to learn about TI’s new family of wide VIN converters with integrated bypass caps. 

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Utilize a STOP pin to manage EMI

The TPS62840’s STOP input pin stops regulator switching both immediately (after the current switching cycle) and temporarily. During this time, the regulator generates absolutely no ripple or switching noise, which is useful in precision applications like data-acquisition and RF communication.

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Improve EMI for free with an optimized PCB layout

Review these tips for minimizing the impacts of di/dt switching transients through optimal power supply component placement. 

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