L6360 datasheet(37/65 Pages) STMICROELECTRONICS

Part #	L6360

Description	IO-Link communication master transceiver IC

PDF	65 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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37 / 65 page

L6360

Device configuration

Doc ID 022817 Rev 2

37/65

6.3

Demagnetization

The power stage can be represented as in Figure 19.

Figure 19.

Power stage. Q2 is not present on L+ output

When a power stage output (C/Q or L+) is connected to an inductance, the energy stored in

the load is:

Equation 1

This energy must be properly dissipated at the switch-off. Without an appropriate circuitry

the output voltage would be pulled to very negative values, therefore recovering the stored

energy through the power transistor's breakdown.

To avoid this, the output voltage must be clamped so that the voltage across the power

switch does not exceed its breakdown voltage.

In the case of load connected between the C/QO pin and VCC, at switch-off (of the low-side

switch) the output is pushed to a voltage higher than VCC.

---LI

L6360 Datasheet(PDF) 37 Page - STMicroelectronics