BQ40Z50-R2 datasheet(43/55 Pages) TI2

部件名	BQ40Z50-R2

功能描述	BQ40Z50-R2 1-Series, 2-Series, 3-Series, and 4-Series Li-Ion Battery Pack Manager

PDF	55 Pages

Scroll/Zoom	100%

制造商	TI2 [Texas Instruments]

网页	https://www.ti.com

标志

43 / 55 page

Current Direction

To SRP – SRN pin or HSRP – HSRN pin

RSNS

Current Sensing Direction

Figure 11-3. Sensing Resistor PCB Layout

Sense Resistor

Ground Shield

Filter Circuit

Figure 11-4. Sense Resistor, Ground Shield, and Filter Circuit Layout

11.1.1 Protector FET Bypass and Pack Terminal Bypass Capacitors

Use wide copper traces to lower the inductance of the bypass capacitor circuit. Figure 11-5 shows an example

layout, demonstrating this technique.

Pack+

Pack±

BAT+

BAT±

Low Level Circuits

Figure 11-5. Use Wide Copper Traces to Lower the Inductance of Bypass Capacitors C1, C2, and C3

11.1.2 ESD Spark Gap

Protect SMBus clock, data, and other communication lines from ESD with a spark gap at the connector. The

pattern in Figure 11-6 is recommended, with 0.2-mm spacing between the points.

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BQ40Z50-R2

SLUSCS4C – JUNE 2017 – REVISED APRIL 2021

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BQ40Z50-R2 数据表(PDF) 43 Page - Texas Instruments