Datasheet

Data Sheet ADM1175
Rev. C | Page 21 of 24
APPLICATIONS INFORMATION
APPLICATIONS WAVEFORMS
05647-070
CH1 1.5A CH2 1.00V
CH3 20.0V CH4 10.0V
M40.0ms
4
3
2
1
Figure 41. Inrush Current Control into 220 µF Load
(Channel 1 = I
LOAD
, Channel 2 = V
TIMER
, Channel 3 = V
GATE
, Channel 4 = V
OUT
)
05647-071
CH1 1.5A CH2 1.00V
CH3 20.0V CH4 10.0V
M10.0ms
4
3
2
1
Figure 42. Overcurrent Condition at Startup (ADM1175-1 Model)
(Channel 1 = I
LOAD
, Channel 2 = V
TIMER
, Channel 3 = V
GATE
, Channel 4 = V
OUT
)
05647-072
CH1 1.5A CH2 1.00V
CH3 20.0V CH4 10.
0V
M20.0ms
4
3
2
1
Figure 43. Overcurrent Condition at Startup (ADM1175-2 Model)
(Channel 1 = I
LOAD
, Channel 2 = V
TIMER
, Channel 3 = V
GATE
, Channel 4 = V
OUT
)
05647-073
CH1 1.5A CH2 1.00V
CH3 20.0V CH4 10.0V
M10.0ms
4
3
2
1
Figure 44. Overcurrent Condition During Operation (ADM1175-1 Model)
(Channel 1 = I
LOAD
, Channel 2 = V
TIMER
, Channel 3 = V
GATE
, Channel 4 = V
OUT
)
05647-074
CH1 1.5A CH2 1.00V
CH3 20.0V CH4 10.0V
M20.0ms
4
3
2
1
Figure 45. Overcurrent Condition During Operation (ADM1175-2 Model)
(Channel 1 = I
LOAD
, Channel 2 = V
TIMER
, Channel 3 = V
GATE
, Channel 4 = V
OUT
)
KELVIN SENSE RESISTOR CONNECTION
When using a low value sense resistor for high current
measurement, the problem of parasitic series resistance can
arise. The pad and solder resistance can be a substantial fraction
of the rated resistance, making the total resistance larger than
expected. This error problem can be largely avoided by using a
Kelvin sense connection. This type of connection separates the
high current path through the resistor and the voltage drop
across the resistor. A 4-pad resistor may be used or a split pad
layout can be used with a 2-pad sense resistor to achieve Kelvin
sensing.