L6360 datasheet(58/65 Pages) STMICROELECTRONICS

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EMC protection considerations

L6360

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Doc ID 022817 Rev 2

EMC protection considerations

Depending on final product use and environmental conditions, the master application may

require additional protection.

11.1

Supply voltage protection

In order to avoid overvoltages on a system supply, a voltage suppressor such as Transil™

can be added. A simple protection diagram example is shown in Figure 44.

Figure 44.

Supply voltage protection with uni-directional Transil

Performance of the above mentioned example is limited and does not include reverse

polarity protection. It is just a cost-effective solution.

A more sophisticated solution can be seen in Figure 45.

Table 32.

Supply voltage protection component description

Part

Function

Description

D_S

Supply overvoltage protection

Works as a primary overvoltage clamp to limit supply line

distortions - like surge pulses, oscillations caused by line

parasitic parameters (inductance) during plug-in phase, etc.

1500 W is recommended to provide reliable protection, uni-

directional type helps to avoid negative stress of the L6360.

C_F

Filtering bulk capacitor

An energy buffer for application supply, filters the application

supply to avoid high ripple during power driver switching, etc.

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