Hi team,
In the setting of PBTL mode (datasheet Figure 27), the input C and input D were short to ground. But you can see output C and output D were still connected to speaker.
Could you explain why there is output signal (output C/D) while input signal is absent (input C/D short to ground)? Thanks!
Best regards,
Sam Ting
Hi Sam,
PBTL means the 2 output amplifier using paralleled in order to increase the output current. As you can see in the block diagram, the 4 input can connect with each other internally. So when using PBTL mode, only two input can drive four output. And INPUT_C and INPUT_D should connect to GND.
Best Regards,
Frank
Hi Frank,
Normal signal flow is shown as below green line. (am I right?) Currently, INPUT_CD are shorted to ground, so there is no signal at output of gate-driver, how can OUTPUT_C/D have output signal?
Best regards,
Genie
Hi Genie,
The signal flow like my drawing followed. The gate driver_C can be drive by Path_A and the same as gate driver_D. The control circuit is different from the normal application so the block diagram doesn't shows the flow between gate drivers.
Best Regards,
Frank
