“Is your space cramped? Is your next design a smaller printed Circuit board (PCB) than your previous design? Are you tired of managing 10 or even 20+ components in just one power supply? If you answered yes to all of these questions, then use MicroSiP modules to achieve a smaller footprint and simplify your life!
Packing 3A of output current into a 2mm x 2mm package with over 90% efficiency used to be a “great feat” by our design team. However, for the same integrated circuit (IC), how can a power Inductor (usually 5 and 15mm2 PCB area) be included with only an additional 4.4mm2 of PCB area? Currently, this is a breakthrough. In fact, the recent development of 3A converters can be summed up by the following:
● 2010: TPS54319: 13 components total, footprint > 200 mm2
● 2012: TPS62090: 8 components in total, 100 mm2 board area
● 2013: TPS62085: 6 components in total, 64 mm2 board area
● 2015: TPS82085: 5 components in total, 35 mm2 board area
When using the new TPS82085 MicroSiP module, designers can reduce the total required PCB area to less than 35mm2 and the bill of materials (BOM) to a total of only five components. This module is ideal for optical interconnect systems, solid state drives (SSD) and other space-constrained applications requiring 3A of output current.
The TPS82085 module contains a DC/DC buck converter, plus a power inductor; this inductor needs to deliver 3A of continuous output current. To set the output voltage, you only need to provide the input capacitor, output capacitor and 2 feedback resistors. If you don’t use the PG pin, you don’t need a power-good output pull-up resistor. What could be further simplified with the suggested component values in the datasheet?
Figure 1 shows a typical application circuit for an output voltage of 1.8V (delivering 3A). Which of your many applications would benefit most from such a small size and high output current?
Figure 1: Typical circuit schematic of the TPS82085 MicroSiP module