Knife
Member level 2
Hi all
I designed a boost converter for LED driving which is specification listed below. I used TPS40211. It doesn't have simulation tool on TI but TPS40211 is same with TPS40210. You can see simulation circuit below and I built this circuit.
Input Voltage : 6 V - 8,5V
Output Volate : 70 V
Output Current : 0,2 A
The LED's are flashing and boost converter doesn't work at 6 V - 8,5 V input range. If I increase input voltage to 10 V - 12.5 V range, it works properly.
I'm thinking it causes from inductor or sense resistor or input cap. I tried to increase input cap but it didn't work. I will try to increase inductor value or decrease current sense value.
Does everyone have a comment or solution for this issue ?
I designed a boost converter for LED driving which is specification listed below. I used TPS40211. It doesn't have simulation tool on TI but TPS40211 is same with TPS40210. You can see simulation circuit below and I built this circuit.
Input Voltage : 6 V - 8,5V
Output Volate : 70 V
Output Current : 0,2 A
The LED's are flashing and boost converter doesn't work at 6 V - 8,5 V input range. If I increase input voltage to 10 V - 12.5 V range, it works properly.
I'm thinking it causes from inductor or sense resistor or input cap. I tried to increase input cap but it didn't work. I will try to increase inductor value or decrease current sense value.
Does everyone have a comment or solution for this issue ?