ZHCSH30C August 2017 – April 2018 TAS5755M
PRODUCTION DATA.
The TAS5755M supports parallel BTL (PBTL) mode with OUT_A/OUT_B (and OUT_C/OUT_D) connected before the LC filter. In addition to connecting OUT_A/OUT_B and OUT_C/OUT_D, BST_A/BST_B and BST_C/BST_D must also be connected before the LC filter, as shown in the Figure 71. In order to put the part in PBTL configuration, drive PBTL (pin 8) HIGH. This synchronizes the turnoff of half-bridges A and B (and similarly C/D) if an overcurrent condition is detected in either half-bridge. There is a pulldown resistor on the PBTL pin that configures the part in BTL mode if the pin is left floating.
PWM output multiplexers register (0x25) and PWM Shutdown Group Register (0x19) must be updated to set the device in PBTL mode. Must follow one of below listed configurations for PBTL mode.