ZHCSFY3B November 2016 – February 2019 TAS2559
PRODUCTION DATA.
The TAS2559 internal processing algorithm automatically enables the boost when needed. A look-ahead algorithm monitors the battery voltage and the digital audio stream. When the speaker output approaches the battery voltage the boost is enabled in-time to supply the required speaker output voltage. When the boost is no longer required it is disabled and bypassed to maximize efficiency. The boost can be configured in one of two modes. The first is low in-rush (Class-G) supporting only boost on-off and has the lowest in-rush current. The second is high-efficiency (Class-H) where the boost voltage level is adjusted to a value just above what is needed. This mode is more efficient but has a higher in-rush current to quickly transition the levels. This can be configured using Table 8.
SPK_CTRL[4] (BST_MODE) | Boost Mode |
---|---|
0 | Class-H - High efficiency |
1 | Class-G - Low in-rush (default) |