Category: Hardware
Product Number: ltc7151
The data manual of LTC7151 shows a typical application circuit as shown in the figure, which can achieve positive DC voltage input and negative DC voltage output.
So, I used it to draw a schematic diagram, as shown in the figure, to convert from 12V to -5.5V. After simulation, it was possible to achieve this, but there was a short circuit between -5.5V and GND in the resulting PCB board.
After investigation, it was not a problem with circuit board production or soldering. However, as soon as the chip is soldered, there will be a short circuit. Please help to see where the problem is with the circuit. Thank you tearfully.