Test Procedure for the LV47009PGEVB Evaluation Board
TEST Procedure
Prepare “DC POWER SUPPLY’’, capability is 40V or more and 20A or more. And “Digital
MULTIMETER”, and “4ohm speaker” and “Oscillator” and “4ch Oscilloscope” and “Heat sink”
1. Recommendation “Heat sink”
Material: Aluminium alloy (A6000 type)
Surface treatment: Alumite (color : black)
Thermal resistance of heat sink (θf): 3 degree C/W
Thermal resistance between the junction and case: 1 degree C/W
θjc+θf=4 degree C/W
{ 150 degree C(Tjmax)-25℃(Ta)}÷ 4 degree C/W Pdmax≒30W
Fig1 Front view
Fig2 Top right view
Measurement.
Fig3 Top view
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2. Eva-board and Measurement instruments of cable connection.
Oscillator
3. VCC, Input, Output operation sequence Start up
A. Vcc ON (Vcc=8V to 18V)
B. AMP ON ( STBY Pin=High: VSTBY=2.5V to Vcc)
C. Mute OFF (Mute Pin=open: VMute switch close open)
E. Input signal ON
Shutdown
F. Input signal OFF
G. Mute ON (Mute Pin=Low: Vmute switch open close)
H. AMP OFF (STBY Pin=Low: VSTBY=0V)
I. Vcc OFF
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