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UCC21520

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6.7 Safety-Related Certifications

VDE

CSA

UL

CQC

Certified according to

DIN VDE V 0884-10

(VDE V 0884-10):2006-

12 and DIN EN 60950-1

(VDE 0805 Teil 1):2011-

01

Approved under CSA Component

Acceptance Notice 5A, IEC 60950-1 and

IEC 60601-1

Certified according to UL

1577 Component

Recognition Program

Certified according to GB 4943.1-

2011

Reinforced Insulation

Maximum Transient

Isolation voltage, 8000

Peak Isolation Voltage,

Surge Isolation Voltage,

Reinforced insulation per CSA 60950-1-

07+A1+A2 and IEC 60950-1 2nd Ed.

Reinforced Insulation,

Altitude

≤ 5000 m,

Tropical Climate

Agency Qualification

Planned

Agency Qualification Planned

File number: E181974

Agency Qualification Planned

6.8 Safety-Limiting Values

Safety limiting intends to prevent potential damage to the isolation barrier upon failure of input or output circuitry. A failure of

the I/O can allow low resistance to ground or the supply and, without current limiting, dissipate sufficient power to overheat

the die and damage the isolation barrier potentially leading to secondary system failures.

PARAMETER

TEST CONDITIONS

SIDE

MIN

TYP

MAX

UNIT

Safety output supply

current

See Figure 2

DRIVER A,

DRIVER B

64

mA

DRIVER A,

DRIVER B

31

mA

Safety supply power

See Figure 3

INPUT

50

mW

DRIVER A

775

DRIVER B

775

TOTAL

1600

Safety temperature

150

°C

The maximum safety temperature is the maximum junction temperature specified for the device. The power

dissipation and junction-to-air thermal impedance of the device installed in the application hardware determines

the junction temperature. The assumed junction-to-air thermal resistance in the Thermal Information table is that

of a device installed on a High-K test board for leaded surface mount packages. The power is the recommended

maximum input voltage times the current. The junction temperature is then the ambient temperature plus the

power times the junction-to-air thermal resistance.