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TPA3156D2: TPA3156D2

Part Number: TPA3156D2

1. The working voltage of TPA3156D2 is specified under 26V. But we want to use at 28V. Because the charging voltage of 24V battery is 28V.

 The charging voltage is designed not to exceed 30V.

Is it OK ?.

2. The attached heatsink of TPA3156D2EVM is OK for 2*70W continuous operation (30 minutes or more).
Since It is not OK, how much is the output power?

  • Hi Hikosaka-san,
    The revommended PVCC/AVCC operation range is 4.5~26V, please make sure the device is working in this range normally. 30V is the abs max voltage, the device can work with this transient voltage level without damage. But there could be reliability issue if the device is working with voltage for long time. The heatsink in the EVM design can supports 2*70W continuous output power for several mins. You could use more powerful heatsink to sustain longer time.
    Best regards,
    Shawn Zheng