AD7405 Data Sheet
DIN V VDE V 0884-10 (VDE V 0884-10):2006-12 INSULATION CHARACTERISTICS
This isolator is suitable for reinforced electrical isolation only within the safety limit data. Maintenance of the safety data is ensured by
means of protective circuits.
Table 6.
Description Symbol Characteristic Unit
INSTALLATION CLASSIFICATION PER DIN VDE 0110
For Rated Mains Voltage ≤300 V rms I to IV
For Rated Mains Voltage ≤450 V rms I to IV
For Rated Mains Voltage ≤600 V rms I to IV
For Rated Mains Voltage ≤1000 V rms I to IV
CLIMATIC CLASSIFICATION 40/105/21
POLLUTION DEGREE (DIN VDE 0110, TABLE 1) 2
MAXIMUM WORKING INSULATION VOLTAGE
IORM
PEAK
INPUT TO OUTPUT TEST VOLTAGE, METHOD B1
V
IORM
× 1.875 = V
PR
, 100% Production Test, t
m
= 1 Second, Partial Discharge < 5 pC V
PD(M)
2344 V
PEAK
INPUT TO OUTPUT TEST VOLTAGE, METHOD A V
PR(M)
After Environmental Test Subgroup 1
V
IORM
× 1.6 = V
PR
, t
m
= 60 Seconds, Partial Discharge < 5 pC 2000 V
PEAK
After Input and/or Safety Test Subgroup 2/ Safety Test Subgroup 3
V
IORM
× 1.2 = V
PR
, t
m
= 60 Seconds, Partial Discharge < 5 pC 1500 V
PEAK
HIGHEST ALLOWABLE OVERVOLTAGE (TRANSIENT OVERVOLTAGE, t
TR
IOTM
PEAK
SURGE ISOLATION VOLTAGE V
IOSM
V
PEAK
1.2 µs Rise Time, 50 µs, 50% Fall Time 12000 V
PEAK
SAFETY LIMITING VALUES (MAXIMUM VALUE ALLOWED IN THE EVENT OF A FAILURE, SEE Figure 3)
Case Temperature T
S
150 °C
Side 1 (P
VDD1
) and Side 2 (P
VDD2
) Power Dissipation P
SO
2.78 W
INSULATION RESISTANCE AT T
S
, V
IO
= 500 V R
IO
>10
9
Ω
F
igure 3. Thermal Derating Curve, Dependence of Safety Limiting Values
with Case Temperature per DIN V VDE V 0884-10
0
1
2
3
4
0 50 100 150 200
SAFE OPERATING POWER (W)
AMBIENT TEMPERATURE (°C)
12536-003
Rev. A | Page 6 of 20
