10.1 Layout Guidelines

• To improve ac performance such as PSRR, output noise, and transient response, design the board with separate ground planes for V_IN and V_OUT, with each ground plane connected only at the GND pin of the device. In addition, connect the ground connection for the output capacitor directly to the GND pin of the device.
• Minimize equivalent series inductance (ESL) and equivalent series resistance (ESR) in order to maximize performance and stability. Place every capacitor as close to the device as possible, and on the same side of the PCB as the regulator.
• Do not place any of the capacitors on the opposite side of the PCB from where the regulator is installed. The use of vias and long traces are strongly discouraged because of the negative impact on system performance. Vias and long traces can also cause instability.
• If possible, and to maximize the performance listed in this data sheet, use the same layout pattern used for the TPS7A19 evaluation module, TPS7A1901EVM-760 (SBVU031).

10.2 Layout Example

Figure 16. TPS7A19 Layout Example