Texas Instruments TAS5066PAG manual PSU Interface J901, 1. Recommended Power Supplies

PSU Interface (J901)

2.1 PSU Interface (J901)

The TAS5066−511 1D6EVM module must be powered from one or two exter- nal regulated power supplies. High audio performance requires a stabilized output stage 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 resist- ance. Please check the recommended maximum supply voltage in the TAS5111 datasheet.

Table 2−1. Recommended Power Supplies

Description	Voltage Limitations	Current
	(4-WLoad)	Recommendations
System power supply	15 to 20 V	0.25 A
Output power stage supply	0 to 29.5 V	5.5 A†

†The rated current corresponds to 2-channel full scale (70 W each) or 6-channel 1/8 scale (9 W each), which most likely is adequate for a standard 6-channel amplifier design.

Figure 2−1 shows the recommended TAS5111 power-up sequence. For prop- er TAS5111 operation the RESET signal must be kept low during power-up. RESET is pulled low during power-up for 200 ms by the on-board reset genera- tor (U903).

Figure 2−1. Recommended Power-Up Sequence

System power supply

Output stage power supply

RESET

>1 ms

2-2