ACPL-5160 Datasheet, PDF (33/36 Pages) AVAGO TECHNOLOGIES LIMITED – 2.5 Amp Gate Drive Optocoupler with Integrated (VCE) Desaturation Detection and Fault Status Feedback

ACPL-5160 and ACPL-5161
Data Sheet
Description
This thermal model assumes that the ACPL-516x optocoupler is mounted onto a 76.2 mm × 76.2 mm low and high conductivity
printed circuit board (PCB) per JEDEC standard. The PCB boards are made of FR-4 material and the thickness of the copper traces is
per JEDEC standards for low/high conductivity board.
The ACPL-516x is a hybrid device with four die: an input LED1, an input buffer IC, an output feedback LED2, and an output detector
IC. The temperature at the LEDs and the ICs of the optocoupler can be calculated by using the following equations:
ΔT_1A = R₁₁P₁ + R₁₂P₂ + R₁₃P₃ + R₁₄P₄
ΔT_2A = R₂₁P₁ + R₂₂P₂ + R₂₃P₃ + R₂₄P₄
ΔT_3A = R₃₁P₁ + R₃₂P₂ + R₃₃P₃ + R₃₄P₄
ΔT_4A = R₄₁P₁ + R₄₂P₂ + R₄₃P₃ + R₄₄P₄
where:
ΔT_1A = Temperature difference between ambient and LED1.
ΔT_2A = Temperature difference between ambient and INPUT IC.
ΔT_3A = Temperature difference between ambient and LED2.
ΔT_4A = Temperature difference between ambient and OUTPUT IC.
P₁ = Power dissipation from LED1.
P₂ = Power dissipation from INPUT IC.
P₃ = Power dissipation from LED2.
P₄ = Power dissipation from OUTPUT IC.
Thermal Coefficient Data (Units in °C/W)
High Conductivity Board
R₁₁
R₁₂
R₁₃
R₂₄
R₂₁
R₂₂
R₂₃
R₂₄
R₃₁
R₃₂
R₃₃
R₃₄
R₄₁
R₄₂
R₄₃
R₄₄
111 26
28
26
24
66
30
23
23
29
79
25
27
26
26
35
Low Conductivity Board
R₁₁
R₁₂
R₁₃
R₂₄
R₂₁
R₂₂
R₂₃
R₂₄
R₃₁
R₃₂
R₃₃
R₃₄
R₄₁
R₄₂
R₄₃
R₄₄
125 37
41
32
41
70
47
30
36
38
93
28
41
35
40
38
Broadcom
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