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TFA9815

NXP Semiconductors
Part Number TFA9815
Manufacturer NXP Semiconductors
Description Stereo full-bridge audio amplifier
Published Jan 30, 2009
Detailed Description www.DataSheet4U.com TFA9815 Stereo full-bridge audio amplifier 2 x 17 W Rev. 01 — 16 December 2008 Preliminary data shee...
Datasheet PDF File TFA9815 PDF File

TFA9815
TFA9815

Overview
www.
DataSheet4U.
com TFA9815 Stereo full-bridge audio amplifier 2 x 17 W Rev.
01 — 16 December 2008 Preliminary data sheet 1.
General description The TFA9815 is a 2-channel power comparator for high-efficiency class D audio amplifier systems.
It contains two full-bridge Bridge-Tied Load (BTL) power stages, drive logic, protection control logic and full differential input comparators.
By using this power comparator a compact closed-loop self-oscillating digital audio amplifier system or open-loop system can be built.
The continuous output power is 2 ×17 W in a full-bridge BTL application.
The TFA9815 does not require a heat sink and operates using an asymmetrical supply voltage.
2.
Features I I I I I I Stereo full-bridge audio amplifier for class D applications No external heat sink required Operating voltage range: asymmetrical from 8 V to 20 V Thermally protected Zero dead-time switching Current-limiting (no audible interruptions) 3.
Applications I I I I I I Self-oscillating or open-loop class D audio amplifier applications Flat-panel television sets Flat-panel monitors Multimedia systems Wireless speakers High-end CRT television sets 4.
Quick reference data Table 1.
Quick reference data VP = 12 V; fosc = 550 kHz; Tamb = 25 °C; typical application diagram Figure 12, unless otherwise specified.
Symbol General VP IP supply voltage supply current single, asymmetrical supply (VDD - VSS) Sleep mode 8 12 110 20 200 V µA Parameter Conditions Min Typ Max Unit NXP Semiconductors www.
DataSheet4U.
com TFA9815 Audio amplifier 2 x 17 W Table 1.
Quick reference data …continued VP = 12 V; fosc = 550 kHz; Tamb = 25 °C; typical application diagram Figure 12, unless otherwise specified.
Symbol Iq(tot) Parameter total quiescent current output power efficiency RMS output power Conditions Operating mode; no load; no snubbers; no filter connected output power; 2 × 10 W into 8 Ω VP = 15 V; RL = 8 Ω; THD = 10 % VP = 12 V; RL = 8 Ω; THD = 10 % VP = 12 V; RL = 6 Ω; THD = 10 % VP = 12 V; RL = 4 Ω...


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