LM2678T-ADJ output voltage of 5V.When the input voltage is 12V, the effect of output voltage 5V is very good, and the effect of 5A over-current protection is very good.When the input voltage is 24V, some loaded LM2678T-ADJ chip can not stable output pressure, and the effect of 5A over-current protection is bad.When the output is over-current , the voltage of 5V jump high , then burn LM2678T-ADJ.Please give some guidance advice.
Note: the input voltage range for 10V - 29V. Layout and wiring of peripheral circuit reference PDF specification.The output inductor of peaking coils is configured to 22 uh.Output capacitance of SMD electrolytic capacitors of SANYO is configured to 220 uf.
