Other Parts Discussed in Thread: LM5155
Hi team,
I have questions about LM5123-Q1 when it is configured with TAS5828 Class-H audio amp. Please refer to below customer's configuration.
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- Customer’s Battery spec: 13V(discharged) ~ 16.8(full charged)
- Maximum Vout: 25V(PVDD). And it differs from the volume setting and will be controlled by class-H AMP.
- Customer’s Scenario:
- In high volume: Customer will use Class-H hybrid pro for the best efficiency.
- In low volume: They want to use direct battery voltage. Because if they boost voltage in low volume too, battery running time is decreased.
Q1. For example, let's say current voltage status of battery is 14V and output range of LM5123 had been set to 13V to 25V by dynamic voltage tracking (but let's say LM5123 is upper Vout range). Then, Does LM5123 work in bypass mode in lower volume case?
Q2. As far as I know, Class-H can be done with with any boost converter with a feedback pin. Then, Is there any reason that LM5123-Q1 has a Class-H dedicated track pin? What makes the track pin of LM5123 so special compared to other DCDC like LM5155?
Best regards,
Jay
