Texas Instruments SLEU056 manual Power the EVM by One Power Supply, Load = 6 Ω

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Power Supply

3.1 Power Supply

The TAS5010−5112F2EVM can be powered from one or two external power supplies. High-end audio performance requires a stabilized power supply with low ripple voltage and low output impedance.

Note:

The length of the power supply cable must be minimized. Increasing the length of the PSU cable is equal to increasing the distortion for the amplifier at high output levels and low frequencies.

3.1.1Power the EVM by One Power Supply

A single power supply can be connected to the TAS5010−5112F2EVM board. Short VHBR and V+ at the power cable (red and white plugs).

Voltage for the connected power supply is not allowed to be below 15 V. The maximum supply voltage depends of the speaker load resistance. Check the recommended maximum supply voltage in the TAS5112ADFD data sheet (SLES094).

Table 3−1. Maximum Supply Voltage (Single Supply)

RLOAD = 6 Ω

Supply voltage (VHBR and V+)

29.5 V

3.1.2Power the EVM With Two Power Supplies

When two supplies power the TAS5010−5112F2EVM, it is possible to adjust the output power with the level of the voltage VHBR (pin 1 at J640). The minimum VHBR voltage is 0 V. The maximum voltage depends of the load resistance. Check the recommended maximum supply voltage in the TAS5112ADFD data sheet (SLES094).

Table 3−2. Maximum H-bridge Voltage vs Load Impedance

 

RLOAD = 6 Ω

Maximum VHBR voltage

29.5 V

 

 

V+ voltage

15 V – 20 V

Figure 3−1. Recommended Power-Up and Power-Down Sequence

V+

VHBR

>1 ms

 

>1 ms

 

 

 

3-2

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Contents User’s Guide Important Notice Products ApplicationsEVM Important Notice EVM Warnings and Restrictions Read This First About This ManualRelated Documentation From Texas Instruments Part Number Literature NumberContents Figures TablesIntroduction TAS5010−5112F2EVM FeaturesTopic TAS5010−5112F2EVM Features −1. Simplified TAS5010−5112F2EVM Block DiagramTAS5010−5112F2EVM Features Page Detailed Description of the EVM TopicBoard Overview MuteEnable/Disable S/PDIF−MUTE JMP130 Description of Jumper SettingsDouble-Speed Control JMP120 1 S/PDIF Digital Audio Coaxial/RCA Input J100 Default Jumper PositioinsDescription of Connectors 2 S/PDIF Optical J101Pin No Pin Description Net Name on Schematic Pin No Description Analog Input Connector J160Analog Output Connector J170 PC and I2C Interface J300Pin No Description Net Name at Schematic Loudspeaker Connectors J540, J541, J580, and J581Power Supply Connector Reference Designator DescriptionDescription of Switches and Buttons Temperature Warning LED LED221 Description of IndicatorsPower LED LED223 Protection Mode LED LED220EVM Board Operation Power the EVM With Two Power Supplies Power SupplyPower the EVM by One Power Supply Load = 6 ΩSetup the TAS5010−5112F2EVM With the S/PDIF Input Equalizer EnableControlling the DAP With PC Software Setup the TAS5010−5112F2EVM With the Analog Line InputInterfacing the Analog Line Output Start-up SequenceHints for Measurement of Performance
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