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This chapter describes the TAS5086-5186V6EVM board in regards to power supplies
and system interfaces.
2.1
Power Supply (PSU) Interface (J901)
The TAS5086-5186V6EVM module must be powered from external power supplies. High-end audio
performance requires a stabilized power supply, with low ripple voltage and low output impedance.
Note:
The length of power-supply cable must be minimized. Increasing length of PSU cable is
equal to increasing the distortion for the amplifier at high output levels and low
frequencies.
Maximum output-stage supply voltage depends of the speaker load resistance. Please check the
recommended maximum supply voltage in the TAS5186A data sheet.
DESCRIPTION
System power supply
Output-stage power supply
(1)
The rated current correspond to 2-channel full scale (30 W each), which most likely is adequate for
a standard 2.1-channel amplifier design.
The recommended TAS5186A power-up sequence is shown in
operation, the RESET signal should be kept low during power up. RESET is pulled low during power up
for 200 ms by the onboard reset generator (U908).
SLEU073 – JULY 2006
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Table 2-1. Recommended Supply Voltages
VOLTAGE LIMITATIONS
15 V to 20 V
0 V to 32 V
System power supply
Output stage power supply
RESET
Figure 2-1. Recommended Power-Up Sequence
4
3
2
1
(PCB connector top view)
Figure 2-2. J901 Pin Numbers
System Interfaces
CURRENT RECOMMENDATIONS
Figure
2-1. For proper TAS5186A
>1ms
Chapter 2
SLEU073 – JULY 2006
0.2 A
(1)
2 A
System Interfaces
7
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