Other Parts Discussed in Thread: LM5008A, , LM5008
Hi ,
I am testing my new hardware with DRV8353RS. I supplied it with 20V.
Schematic of DRV8353RS connection:
When I connect 20V to +UBat, i am waiting for 5.3V at output, but there is 0.5V without loading. If i load output to 100 OHM, there is 0V.
The following signals are present at the buck converter pins:
- SW: short 50kHz pulses:
- VIN: DC 20V
- VCC: DC 7V
- BST: some 50kHz pulses with 7V level:
- RCL: DC 0.2V
- RT/SD: DC 2V
- FB: DC 0.2V
- Current consumption ~50mA, DRV8353RS heats up.