DCDC boost module-B628 or SX1308

DCDC power module, boost, uses B628 (SX1308) chip solution. All the materials are needed to make a module. It only costs a few yuan per module, which is not expensive.
The input voltage range of the B628 chip is 2V-24V, and the output voltage can be adjusted to 28V. I have this one. It seems that the maximum is more than 20. If you need other voltages, you can change the feedback resistor and circuit according to the specifications.
Many of the boost modules of Aubao have the same chip solution. Don't believe the so-called output of 2A. It is not that fierce.
The same circuit has been sampled and tested. This The board is just redrawn to a size of 3x3cm, which is fine in theory. The actual picture will be supplemented with
low power in the future, which is suitable for boosting power supply for small things such as router optical modems. Generally, 0.0 A for routers or optical modems is enough. . 5V input and 12V output will be warm at about 1A. If it is higher, it is recommended to stick a heat sink on the back.
This thing is not technical. It is just buying too many chips and making a board to make a module. The input interface can be ph2.0, micro or typec