CDP152 데이터 시트보기 (PDF) - STMicroelectronics

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CDP152

Dual line programmable transient voltage suppressor for SLIC protection

STMicroelectronics 

4 Test circuit for vfp and vdgl parameters

4 Test circuit for vfp and vdgl parameters

LCDP1521

(VP is defined in unload condition)

L

R2

VP

C1

R1

R4

R3

C2

TIP

RING

GND

Table 1. Test circuit component values

Pulse (µs)

Vp

C1

C2

L

R1

R2

R3

R4

IPP

Rs

tr

tp

(V) (µF) (nF) (µH) (Ω) (Ω) (Ω) (Ω) (A) (Ω)

10 700 1500 20 200

0

50

15

25

25

10 110

1.2

50 1500 1

33

0

76

13

25

25

15

60

2

10 2500 10

0

1.1 1.3

0

3

3

10 245

5 Technical information

Figure 2. LCDP1521 concept behavior.

L1

GND

Rs1

TIP

V Tip

ID1

IG

T1

Th1

D1

-Vbat Gate

GND

C

Rs2

L2

RING

VRing

Figure 2 shows the classical protection circuit using the LCDP1521 crowbar concept. This

topology has been developed to protect the new high voltage SLICs. This supports the

programming of the negative firing threshold while the positive clamping value is fixed at GND.

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