Tool/software: WEBENCH® Design Tools
Hi,
We have created a new project with the LM5176PWPT-HTSSOP-28, and we tested now the 1st prototype.
The project is in the WebDesign number 56 of my account.
Some remarks: This DC-DC converter is designed to a maximum output load of 10A @ 12V regulated in a input range of Vin = 9V to 17Vdc
But this time it happens the prototype its not performing well. The following tests has been carried out:
TEST 1: Vin = 12.0V and Iload = 0A (No load). RESULT: The DC-DC converter performs well with Vout = 12.05V
TEST 2: Vin = 12.0V, and Iload = 500mA. RESULT: The DC-DC converter performs well with Vout = 12.05V.
TEST 3: Vin = 12.0V and Iload = 600mA. RESULT: Vout = 12.0V at beginning and drops suddenly to 2.05V during the load transition. During a few seconds we have heardDC-UPS-P 1622d.pdf a series of noisy "clicks" similar too relays switching.
The DC-DC didn't recover anymore and is faulty. The M1-H Mosfet is in open circuit and don't switch.
Thanks
