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TPS65020 Datasheet(PDF) 44 Page - Texas Instruments |
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TPS65020 Datasheet(HTML) 44 Page - Texas Instruments |
44 / 53 page L3 PGND3 VDCDC3 VIN TPS65020 SLVS607D – SEPTEMBER 2005 – REVISED JANUARY 2016 www.ti.com 11 Layout 11.1 Layout Guidelines As for all switching power supplies, the layout is an important step in the design. Proper function of the device demands careful attention to PCB layout. Take care in board layout to get the specified performance. If the layout is not carefully done, the regulators may show poor line regulation, load regulation, or both, and stability issues, as well as EMI problems. It is critical to provide a low impedance ground path. Therefore, use wide and short traces for the main current paths. The input capacitors must be placed as close as possible to the IC pins as well as the inductor and output capacitor. For TPS65020, connect the PGND pins of the device to the PowerPAD land of the PCB and connect the analog ground connections (AGND) to the PGND at the PowerPAD. It is essential to provide a good thermal and electrical connection of all GND pins using multiple vias to the GND-plane. Keep the common path to the AGND pins, which returns the small signal components, and the high current of the output capacitors as short as possible to avoid ground noise. The VDCDCx line must be connected right to the output capacitor and routed away from noisy components and traces (for example, the L1, L2, and L3 traces). 11.2 Layout Example Figure 42. Layout Example of a DCDC Converter 44 Submit Documentation Feedback Copyright © 2005–2016, Texas Instruments Incorporated Product Folder Links: TPS65020 |
Similar Part No. - TPS65020_16 |
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Similar Description - TPS65020_16 |
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