sw6208 solution power bank circuit board

Note:
The whole board has not been tested for temperature rise, stability, etc.
c4. The capacitor material must use X7R material capacitors.
It is recommended that all capacitors be made of X7R material.
(I have not measured the temperature rise and use X7R capacitors directly to ensure insurance. When using X5R capacitors, you must test that the temperature rise cannot exceed the capacitor temperature resistance range) (General: X7R temperature resistance -55°C ~ 125°C, X5R temperature resistance -55°C ~ 85°C)
Do not add arbitrarily, change the type and capacitance of the capacitor (c2, c3, c4, c21, c19, c20, c1, c7, c8, c5, c6) (c16, c17, c18) the
front group capacitor may Relevant to the feedback adjustment of the chip, the change may cause the chip feedback q point to change and cause instability; the rear capacitor is the data line decoupling capacitor and should not be too large. Please refer to the data manual for the value change.
When selecting the replacement type of MOS tube, please refer to the detailed parameters of the recommended model MOS tube in the data sheet. It does not mean that the withstand voltage and current are sufficient. Also consider the gs turn-on curve of the mos tube and the internal resistance under different gs voltage turn-on.