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SSM6515 Recommended for New Designs
The SSM6515 is a fully integrated, high efficiency, mono Class-D audio amplifier with digital input that is ideally suited for use in wireless headphones...
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SSM6515 on Analog.com

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Conditions that trigger OCP

jhshin on Apr 2, 2026

Category: Datasheet/Specs

Product Number: SSM6515

Hello,

When the gain of an SSM6515 with OCP enabled is increased beyond a certain level, operational issues occur. Is this symptom normal?

Are there any other conditions that trigger OCP besides shorting the output's GND or PVDD? Please provide a detailed explanation of the conditions that trigger OCP.

Thank you in advance.

DaveThib

on Apr 3, 2026 7:31 PM
0
Hello jhshin,

Can you detail what the "certain level" is?

Also, what is your load impedance?

What is your PVDD voltage?

Dave T
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Cresyn on Apr 5, 2026 10:21 PM in reply to DaveThib
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Hello, Dave Thib, I'm Yoo
The impedance is approximately 20 ohms, and the PVDD voltage is 1.8V.
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PhenixNunlee

on Apr 6, 2026 3:18 PM in reply to Cresyn
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20 Ohm is fairly high impedance the OCP only triggerss when SSM6515 senses a high current draw not just a short. Do you see the OCP trigger in Status register of SigmaStudio? What power are you trying to drive into the 20 ohm load? Just doing some back of the envelope math this part would have a power rating of approximately 67mW.
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