ACPL-K74T-000E Datasheet, PDF (15/16 Pages) Broadcom Corporation. – Automotive High-Speed Low-Power Digital Optocouplers with R2Coupler® Isolation and AEC-Q100 Grade 1 Qualification

ACPL-K71T, ACPL-K72T, ACPL-K74T, and ACPL-K75T
Data Sheet
Thermal Resistance Model for ACPL-K74T/K75T
T_a
: Ambient temperature (C)
T₁ : Temperature difference between Die1 junction and ambient (°C)
T₂ : Temperature deference between Die2 junction and ambient (°C)
T₃ : Temperature difference between Die3 junction and ambient (°C)
T₄ : Temperature deference between Die4 junction and ambient (°C)
T₁
= (R₁₁ × P₁ + R₁₂ × P₂ + R₁₃ × P₃ + R₁₄ × P₄) + T_a -- (1)
T₂
= (R₂₁ × P₁ + R₂₂ × P₂ + R₂₃ × P₃ + R₂₄ × P₄) + T_a -- (2)
T₃
= (R₃₁ × P₁ + R₃₂ × P₂ + R₃₃ × P₃ + R₃₄ × P₄) + T_a -- (3)
T₄
= (R₄₁ × P₁ + R₄₂ × P₂ + R₄₃ × P₃ + R₄₄ × P₄) + T_a -- (4)
Measurement data on a low K board:
R₁₁
R₁₂
R₁₃
R₁₄
R₂₁
R₂₂
R₂₃
R₂₄
R₃₁
R₃₂
R₃₃
R₃₄
R₄₁
R₄₂
R₄₃
R₄₄
160 76 76 76 76 115 76 76 76 76 160 76 76 76 76 115
Broadcom
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