LCP02-150M

Technical information

7/10

Figure 6.

Protection of SLIC with positive and negative battery voltages

Figure 7.

Protection of high voltage SLIC

Figure 6. shows the classical protection topology for SLIC using both positive and negative

battery voltages. With such a protection the SLIC is protected against surge over +Vb and

lower than -Vbat. In this case, +Vb can be programmed up to +95 V while -Vbat can be

programmed down to -120 V. Please note that the differential voltage must not exceed

ΔVbat max at 190V.

Figure 7. gives the protection topology for the new SLIC using high negative voltage down to

-120V.

Gn

Gp

GND

TIP

RING

-Vbat

+Vb

LCP02

220nF

SLIC

Rs (*)

Rs (*)

Line

Line card

TIP

RING

220nF

Rs (*) = PTC or Resistor fuse

Gn

Gp

GND

TIP

RING

-Vbat

LCP02

220nF

SLIC

Rs (*)

Rs (*)

Line

Line card

TIP

RING

Rs (*) = PTC or Resistor fuse