Other Parts Discussed in Thread: TPS54308
Hello E2E Experts,
Good day.
When the TPS54308 was unavailable, we substituted the TPS54302 with no other cct modifications. The application is 24VDC input, +/-3.3VDC output at 1A.
Schematic:
Note: 22ufd Caps C106,107,112,113 PN is TDK C2012X6S0J226M series. C108 PN is TDK CGA6P3X7RIE226M250AB
The 302 device in cct produces the following positive output with ~200mA positive load and 0mA negative load:
The same cct with TPS54308 installed on the identical PCB, the same loads output is:
PCB Layout (top layer of 6) full ground plane in layer 2:
What am I doing wrong? Any help would be appreciated.
Regards,
CSC
