Maximización de la densidad de potencia de 36 V y 4 A con rendimiento térmico mejorado
Todos los diseñadores de fuentes de alimentación intentan maximizar la eficiencia y eliminar hasta el último miliwatt que se pierde en forma de calor en la conversión CD/CD. ¿Y si le dijera que TI tiene un módulo de energía que no solo le permite aumentar la eficiencia de la conversión CD, sino que también lo hace con una huella de fuente de alimentación más pequeña?
El TPSM53604 es el primer dispositivo de la gama de módulos de alimentación de TI que le ofrece esta combinación en un encapsulado QFN HotRod™ mejorado, con un tamaño de solución un 30 % más pequeño que las soluciones BGA de la competencia, al tiempo que proporciona una reducción de 300 mW en la pérdida de potencia. Vea el vídeo para saber más.
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Space constraint applications often require smaller power supplies with high performance. The TPSM53604 power module from TI integrates a high performance IC in a ratable lead frame QFN package, which helps solve some of these density and performance challenges. Let me show you a few more details about the package construction of this power module.
Inside the module, the IC is mounted on a lead frame using copper pillars. This eliminates the use of bond wire, and together with the bypass capacitors really close to the IC, results in lower output noise. The inductor is mounted on top of the entire circuitry, and this allows the inductor to utilize the entire XY footprint of the module. With this 3D packaging approach and the high performance IC, we get a smaller footprint power module with lower power losses when compared to a BGA style package approach.
We can see this advantage here on the right. In this plot, we're comparing two modules, BGA style module and an RLF QFN module. With 24 volts input and 5 volts out at 3 amp load, we can see that the BGA style package dissipates quite a bit more power than the QFN type module.
Let me show you a quick demo of the power savings with the TPSM53604. With this bench setup here, on top we have two current meters measuring the input current to each board, we have two bench supplies setting the input at 24 volts, and we have two electronic loads loading the outputs of each board at about 3 amps each.
On the left, we have the TPSM53604 module mounted on an evaluation board, and on the right, we have the BGA type module, also mounted on its evaluation board. From the current meter reading, we can see that the TPSM53604 provides about a little over 300 milliwatts of power savings for this input and output condition.
I've shown you how the TPSM53604 achieves high power density without sacrificing performance. For more information on this module, please go to ti.com/PTSM53604. Thank you so much for watching.
