Smaller power module

Today's power supply projects are developing in the direction of miniaturization. Texas Instruments (TI) (Nasdaq: TXN) today launched the industry's smallest 36V, 4A power module in a quad flat no-lead package (QFN). The 5mm x 5.5mm area of ​​the TPSM53604 DC/DC step-down module enables engineers to reduce the size of their power supplies by 30% while reducing power losses to 50% of other similar modules. The new power module comes with a thermal pad to optimize heat transfer, allowing engineers to simplify board mounting and layout.

The TPSM53604 operates in ambient temperatures up to 105°C, enabling rugged applications in factory automation and control, grid infrastructure, test and measurement, industrial transportation, aerospace and defense.

By pairing the TPSM53604 with compact step-down modules such as the TPSM82813 and TPSM82810, engineers can create a complete power solution from the 24-V input all the way to the point of load while minimizing design time and effort.

Advantages and features of TPSM53604

 Shrink and simplify power solutions: Its single-sided layout with a total area of ​​85mm2 is a smaller solution for common 24V, 4A industrial applications. Standard QFN packaging helps simplify design, thereby reducing time to market.

Efficient heat dissipation in high-temperature environments: 42% of the QFN package area of ​​TPSM53604 is in contact with the circuit board, enabling more efficient heat transfer compared to another alternative, the ball grid array (BGA) package. In addition, the module's buck converter integrates MOSFETs and low drain-to-source resistance (RDS(on)), enabling conversion efficiency of 90% from 24 V to 5 V. For more details, watch the video "Enhancing Power Supply Performance Using the TPSM53604 Power Module."

Easy EMI compliance: The TPSM53604’s integrated high-frequency bypass capacitor and lack of bonding wires help engineers meet electromagnetic interference (EMI) standards set by CISPR (International Special Committee on Radio Interference) 11 Class B limits.

Packaging and availability

The TPSM53604 QFN package is available now from TI and authorized distributors in a 5mm x 5.5mm package. The above is the relevant knowledge of Texas Instruments.