The recommended PCB layout for the TDA4601 is to keep the input and output stages separate, with a ground plane in between to reduce noise coupling. The decoupling capacitors should be placed close to the IC, and the layout should be symmetrical to minimize electromagnetic interference (EMI).
The bootstrap capacitor (CBOOT) value depends on the switching frequency, output voltage, and output current. A general rule of thumb is to choose a value between 10nF to 100nF. A larger value can reduce the voltage drop across the high-side switch, but may increase the turn-on time.
The maximum allowed voltage on the VCC pin of the TDA4601 is 15V, but it's recommended to keep it below 12V to ensure reliable operation and to prevent damage to the internal voltage regulator.
The TDA4601 has a built-in overcurrent protection feature that can be enabled by connecting a resistor (RSENSE) between the sense pin and ground. The value of RSENSE determines the overcurrent threshold. The IC will shut down if the sense voltage exceeds 0.5V.
Yes, the TDA4601 can be used in a synchronous rectification configuration to improve efficiency. However, this requires additional external components, such as a low-side switch and a driver IC, and careful design to ensure proper operation.
