Safety limiting intends to minimize potential damage to the isolation barrier upon failure of input or output circuitry.
| PARAMETER |
TEST CONDITIONS |
MIN |
TYP |
MAX |
UNIT |
| IS
|
Safety input current (side 1)(1)
|
RθJA = 36.6°C/W, TJ = 150°C, TA = 25°C, see Thermal Derating Curve, Side 1. |
|
|
30 |
A |
| IS
|
Safety input, output, or supply current (side 2)(1)
|
RθJA = 36.6°C/W, VI = 5 V, TJ = 150°C, TA = 25°C, see Thermal Derating Curve, Side 2. |
|
|
0.68 |
| PS
|
Safety input, output, or total power(1)
|
RθJA = 36.6°C/W, TJ = 150°C, TA = 25°C, see Thermal Derating Curve, Both Sides. |
|
|
3.4 |
W |
| TS
|
Safety temperature(1)
|
|
|
|
150 |
℃ |
(1) The maximum safety temperature, T
S, has the same value as the maximum junction temperature, T
J, specified for the device. The I
S and P
S parameters represent the safety current and safety power respectively. The maximum limits of I
S and P
S should not be exceeded. These limits vary with the ambient temperature, T
A.
The junction-to-air thermal resistance, R
θJA, in the
Thermal Information
table is that of a device installed on the
TMCS1100EVM
. Use these equations to calculate the value for each parameter:
T
J = T
A + R
θJA × P, where P is the power dissipated in the device.
T
J(max) = T
S = T
A + R
θJA × P
S, where T
J(max) is the maximum allowed junction temperature.
P
S = I
S × V
I, where V
I is the maximum input voltage.