I have one working PCB which has three different Voltage Rails
: 3.3V
, 4V
and 1.8V
. They are generated using three separate step-down
buck converters. The input voltage to all the converters is a single DC Power Supply (12V).
- Buck Converter Generating 4V powers 4G LTE Module (Load 2.5A)
- Buck Converter generating 1.8V powers LoRa IC
SX1301
(Load 1A) - Buck Converter generating 3.3V powers
iMX6ULL
System-on-module (Load: 3A)
These three different buck converters are occupying alot of PCB space and increasing the BOM
. I am thinking to implement single IC
solution for my system. A quick google search landed me on two solutions.
- A Triple Step-Down Converter from
TI
(TPS6526x) - Using a single Buck Converter to generate multiple voltages. (The link is over here).
What should I consider? Is there any different solution other than listed above?
EDIT: The LoRaWAN IC is SX1301 and it requires 1.8V power supply.