Made a tps65133 chip input voltage is 4 V output of plus or minus 5 V voltage conversion module, according to the chip manual recommended circuit structures, but the test output is about + 4.8 V and 4.8 V, the chip fever severely (hot), with and without load conditions are the same, the circuit is not made of PCB, is directly leads to the chip with copper wire pin welding peripheral capacitance and inductance, and during chip pins distance is about 1 cm, usually serious fever what reason be?

CodePudding user response:

Where did you buy your IC?

CodePudding user response:

4 V to 4.8 V belongs to boost circuit, it is recommended that you learn the boost circuit design points, general description, so it is difficult to explain

CodePudding user response:

This is my TPS65133 circuit + 5 v input voltage, output voltage + 5 v, no-load current of 10 ma (range from 9-12 ma), no fever,
You can consult, or see where there is a short, suggest or on the PCB board is more reliable operation, and hope to be of some help!!!!!!

CodePudding user response:

Brother, can send a schematic diagram? I draw the PCB fever badly hung up after a while, thank you! Email [email protected]

CodePudding user response:

Check the circuit diagram and use resistance, design errors, or short circuit or open circuit condition issued by hot output short-circuit the possibility of more commonly,

CodePudding user response:

I think asking questions in the right way, to map out the first, can you see where the problem is