TPA6211A1-Q1: Condition for calculating PDMAX

NOBUO FUJIHARA

Genius 9435 points

Part Number: TPA6211A1-Q1

Hi team,

My customer asks about equation (11) PDMAX.

Could you provide how PDMAX is calculated from equation (8) or (10), and what prerequisite is applied for PDMAX?

Best regards,

Nobuo

over 6 years ago

0 Ivan Salazar over 6 years ago

TI__Guru** 111825 points

Fujihara-san,

Equation 11 is basically a reduced form of Psup-PL.
Psup is the total amount of power consumed by the amplifier, PL is the amount of power applied to the load, the rest (the difference between them) would be the power consumed by the amplifier but not applied to the load; this is the dissipated power PD.

Best regards,
-Ivan Salazar
Applications Engineer - Low Power Audio & Actuators

0 NOBUO FUJIHARA over 6 years ago in reply to Ivan Salazar

TI__Genius 9435 points

Hi Ivan-san,

By taking differentiation below equation for Vp, I could calculate equation (11).

F(Vp) = Psup-PL

PD get's maximum value when Vp = 2VDD/Pi (BTL configuration)

Best regards,

Nobuo

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TPA6211A1-Q1: Condition for calculating PDMAX