Datasheet

LTC1647-1/
LTC1647-2/LTC1647-3
17
1647fa
APPLICATIONS INFORMATION
V
OUT
C1
10nF
*D2
DDZ23
1647-1/2/3 F10
R2
10Ω
D1*
ON SEMICONDUCTOR
* 1SMA12CAT3, REQUIRED FOR V
CC
> 10V
R1
0.01Ω
12V
Q1
IRF7413
C
LOAD
+
+
–
LTC1647
POWER
LEADS
BACKPLANE CONNECTOR
PCB EDGE CONNECTOR
1μs/DIV
1647-1/2/3 F10a
2V/DIV
0V
12V
V
CC
Waveform Clamped
by a Transient Suppressor
Figure 10. Transient Suppressor Clamp
V
OUT
C1
10nF
*D1
DDZ232
*REQUIRED FOR V
CC
> 10V
1647-1/2/3 F11
R2
10Ω
R1
0.01Ω
12V
Q1
IRF7413
C
LOAD
+
+
–
LTC1647
POWER
LEADS
BACKPLANE CONNECTOR
PCB EDGE CONNECTOR
R3
10Ω
C1
0.1μF
1μs/DIV
1647-1/2/3 F11a
2V/DIV
0V
12V
1μs/DIV
1647-1/2/3 F11b
2V/DIV
0V
12V
11a. V
CC
Waveform Damped by a Snubber (15Ω, 6.8nF) 11b. V
CC
Waveform Damped by a Snubber (10Ω, 0.1μF)
Figure 11. Snubber “Fixes”