Texas Instruments Evaluation Module for TPS622312 TPS622312EVM-574 TPS622312EVM-574 Datenbogen
Produktcode
TPS622312EVM-574
Board Layout
Board layout is critical for all high-frequency, switch-mode power supplies.
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, and
show the board layout for the TPS622312EVM-574 printed-circuit board. The nodes with high-
switching frequencies and currents are kept as short as possible to minimize trace inductance. High-
impedance inputs to the TPS622312, such as the Vout pin, have traces that are shielded by ground traces
and planes. Careful attention has been given to the routing of high-frequency current loops, and a single-
point grounding scheme is used. See the data sheet for specific layout guidelines. Input and output
capacitors must be kept as close as possible to the device. A large bulk input capacitor (C13, C23, and
C33) is provided to compensate for impedance in long input leads.
impedance inputs to the TPS622312, such as the Vout pin, have traces that are shielded by ground traces
and planes. Careful attention has been given to the routing of high-frequency current loops, and a single-
point grounding scheme is used. See the data sheet for specific layout guidelines. Input and output
capacitors must be kept as close as possible to the device. A large bulk input capacitor (C13, C23, and
C33) is provided to compensate for impedance in long input leads.
Figure 1. Assembly Layer
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TPS622312EVM-574 User's Guide
SLVU384A – January 2011 – Revised July 2013
Copyright © 2011–2013, Texas Instruments Incorporated