BLE18PS080SN1 datasheet(28/36 Pages) TI

Part #	BLE18PS080SN1

Description	TPS6291x 3-V to 17-V, 2-A/3-A Low Noise and Low Ripple Buck Converter with Integrated Ferrite Bead Filter Compensation

PDF	36 Pages

Scroll/Zoom	100%

Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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28 / 36 page

• Sensitive traces, such as the connections to the NR/SS, VO, and FB pins need to be connected with short

traces and be routed away from any noise source, such as the SW pin.

• Connect the PSNS pin directly to the system GND plane with a via.

• Place the second L-C filter, Lf and Cf, near the load to reduce any radiated coupling around the second L-C

filter

• Place the FB resistors, R1 and R2, close to the FB pin and route the VOUT connection from R1 to the load as

a remote sense trace. If a second L-C filter is used, this connection should be made after Lf.

• The recommended layout is implemented on the EVM and shown in its User's Guide, TPS6291xEVM-077

User's Guide, as well as in Figure 10-2.

10.2 Layout Example

VIN

GND

VOUT

GND

NR/SS

OUT

NR/SS

PSNS

S-CONF

Figure 10-1. Recommended Layout for Single L-C Filter

VIN

GND

VOUT

GND

VOUT_FILT

NR/SS

OUT

NR/SS

PSNS

S-CONF

Figure 10-2. Recommended Layout for Design with Second L-C Filter

TPS62912, TPS62913

SLVSFP4 – AUGUST 2020

www.ti.com

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Product Folder Links: TPS62912 TPS62913

BLE18PS080SN1 Datasheet(PDF) 28 Page - Texas Instruments