Part Number: LMR62014
Hi,
I made a circuit board using the LMR62014 device.
I am checking the circuit board operation, but I have something I want to ask you.
Attach the circuit diagram and waveform. Waveform is measurement data of environmental temperature 50 degrees.
The left side of the waveform is normal operation. The case temperature of the device will be 90°C.
The right side of the waveform is abnormal operation. Sometimes this state.
In this state the case temperature will be 120°C and the temperature protection will operate. However, even if it returns from temperature protection, this abnormal operation does not return.
I am checking the circuit board operation, but I have something I want to ask you.
Attach the circuit diagram and waveform. Waveform is measurement data of environmental temperature 50 degrees.
The left side of the waveform is normal operation. The case temperature of the device will be 90°C.
The right side of the waveform is abnormal operation. Sometimes this state.
In this state the case temperature will be 120°C and the temperature protection will operate. However, even if it returns from temperature protection, this abnormal operation does not return.
(Question)
1. How often does temperature protection work? Is it 120℃?
2. It does not return to normal operation even if it recovers from temperature protection. Turning off the power will result in normal operation. Is this a state in which the device is in thermal runaway?
(specification)
VIN: 5 V
VOUT: 18 V
IOUT: 150 mA
1. How often does temperature protection work? Is it 120℃?
2. It does not return to normal operation even if it recovers from temperature protection. Turning off the power will result in normal operation. Is this a state in which the device is in thermal runaway?
(specification)
VIN: 5 V
VOUT: 18 V
IOUT: 150 mA
Best regards,
