AN4402 datasheet(4/39 Pages) STMICROELECTRONICS

4 / 39 page

List of figures

AN4402

4/39

DocID025557 Rev 1

List of figures

Figure 1.

Block diagrams on the L99MC6 and L9733 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Figure 2.

Low-side and high-side configured output driving inductive loads . . . . . . . . . . . . . . . . . . . . 6

Figure 3.

Low-side of a L99MC6 during the turn-off phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 4.

L99MC6 high-side during the turn-off, VBAT < VCL_LS - VCL_HS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 5.

L99MC6 high-side during the turn-off, VBAT > VCL_LS - VCL_HS . . . . . . . . . . . . . . . . . . . . . . 9

Figure 6.

Relay with spike protection resistor in parallel to the coil . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 7.

Equivalent electrical diagram during the turn-off phase of an inductive load with parallel

resistor, driven by a low-side configured output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 8.

Equivalent electrical diagram of the turn-off phase of an inductive load driven by a

low-side configured output, without parallel resistor to the load . . . . . . . . . . . . . . . . . . . . . 14

Figure 9.

EDEMAG_LS vs RP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 10.

Equivalent circuit during the demagnetization of a high-side with parallel resistor,

VBAT < VCL_LS - VCL_HS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 11.

Equivalent circuit during the demagnetization of a high-side with parallel resistor,

VBAT > VCL_LS - VCL_HS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 12.

Contribution of the factor 1 / (1 - (VCL_LS/VBAT)) to the increase EDEMAG with VBAT . . . . . 22

Figure 13.

EDEMAG_LS vs VBAT – Example of a low-side output of the L99MC6 . . . . . . . . . . . . . . . . . 23

Figure 14.

Example - Relative EDEMAG_LS to EDEMAG@VBAT=13V versus VBAT/13V (No parallel

resistor) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Figure 15.

EDEMAG_HS vs VBAT – Example of a high-side output of the L99MC6 . . . . . . . . . . . . . . . . 25

Figure 16.

Datasheet L99MC6 - Inductive energy capability of configurable channels, configured as

low-side switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 17.

EDEMAG_MAX vs tDEMAG for a single pulse TJSTART = 150°C . . . . . . . . . . . . . . . . . . . . . . . 30

Figure 18.

EDEMAG_MAX vs tDEMAG for repetitive pulse TJSTART = 100°C . . . . . . . . . . . . . . . . . . . . . . 31

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