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ZHCSO87 June 2021 UCC12041-Q1

PRODUCTION DATA

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机械数据 (封装 | 引脚)

DVE|16
- MPSS113C

散热焊盘机械数据 (封装 | 引脚)

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zhcso87_oa

6.8 Safety Limiting Values

Safety limiting intends to minimize potential damage to the isolation barrier upon failure of input or output circuitry, resulting in zero power delivered to V_ISO and all the power being dissipated inside the device.

PARAMETER		TEST CONDITIONS	MAX	UNIT
I_S	Safety input current ⁽¹⁾	R_θJA = 57.5°C/W, V_I = 5.5 V, T_J = 150°C, T_A = 25°C (see Figure 6-2)	395	mA
I_S	Safety input current ⁽¹⁾	R_θJA = 57.5°C/W, V_I = 4.5 V, T_J = 150°C, T_A = 25°C (see Figure 6-2)	483	mA
P_S	Safety input power	R_θJA = 57.5°C/W, T_J = 150°C, T_A = 25°C (see Figure 6-3)	2174	mW
T_S	Safety temperature ⁽¹⁾		150	°C

(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 a high-K test board for leaded surface-mount packages. 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.