ACS704ELC-005_06 ALLEGRO [Allegro MicroSystems], ACS704ELC-005_06 Datasheet - Page 18

• Manufacturer Part Number: ACS704ELC-005_06
• Description: Fully Integrated, Hall Effect-Based Linear Current Sensor with Voltage Isolation and a Low-Resistance Current Conductor
• Manufacturer: ALLEGRO [Allegro MicroSystems]

The Effect of PCB Layout on ACS706 Thermal Performance
Eight different PC boards were fabricated to characterize the effect of PCB design on the operating junction temperature of the
Hall-effect IC inside of the ACS706. These PC boards are shown in the figure below.
An ACS706 device was soldered on to each PCB for thermal testing. The results of the testing are shown in the following table.
ACS706ELC20A-DS, Rev. 2
Test Results on Eight Thermal Characterization PCBs
Tested at 15A, T
by 14 gauge wires
Sides with Traces
PC Boards
1
2
2 oz. Cu on one side of board
A
= 20°C, still air, 2 oz. copper traces, current carried on and off board
Trace Width (mm)
ACS706ELC-20A
1.5
1.5
1.5
1.5
4
4
4
4
Trace Length (mm)
2 oz. Cu on both sides of board
50
50
10
10
50
50
10
10
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
Above Ambient (°C)
Temperature Rise
Overheated
106
110
90
48
53
38
54
17