JAJSQV6 February 2024 TPS54KC23
PRODUCTION DATA
The device works well when powered by a single VIN configuration. In a single VIN configuration, the internal LDO is typically powered by a 5V or 12V bus and generates a 3.0V output to bias the internal analog circuitry and power MOSFET gate drivers. The VIN input range under this configuration is 4V to 16V for up to 30A load current. Figure 6-6 shows an example for this single VIN configuration.
VIN and EN are the two signals to enable the part. For start-up sequence, any sequence between the VIN and EN signals can power the device up correctly.
In high output voltage applications, the device VCC can be biased through a low forward voltage diode from the VOUT of the device to provide a boost in efficiency both at low load and high load currents. The output voltage must be greater than 3.1V plus the forward voltage of the external diode to save the power loss on the internal LDO. Figure 6-7 shows an example for this configuration.