TDF8590TH NXP Semiconductors, TDF8590TH Datasheet - Page 18

• Manufacturer Part Number: TDF8590TH
• Description: The TDF8590TH is a high-efficiency class-D audio power amplifier with low powerdissipation for application in car audio systems
• Manufacturer: NXP Semiconductors

NXP Semiconductors
TDF8590TH_2
Product data sheet
12.7 Application schematics
The pumping effect should not cause a malfunction of either the audio amplifier and/or the
voltage supply source. For instance, this malfunction can be caused by triggering of the
UVP, OVP or UBP of the amplifier. Best remedy for pumping effects is to use the
TDF8590TH in a mono full-bridge application. In case of dual half-bridge application adapt
the power supply (e.g. increase supply decoupling capacitors).
For SE application (see
For BTL application (see
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A solid ground plane around the TDF8590TH is necessary to prevent emission
100 nF SMD capacitors must be placed as close as possible to the power supply pins
of the TDF8590TH
The heatsink of the HSOP24 package of the TDF8590TH is connected to pin V
The external heatsink must be connected to the ground plane
Use a thermal conductive, electrically isolating Sil-Pad between the backside of the
TDF8590TH and the external heatsink
A solid ground plane around the TDF8590TH is necessary to prevent emission
100 nF SMD capacitors must be placed as close as possible to the power supply pins
of the TDF8590TH
The heatsink of the HSOP24 package of the TDF8590TH is connected to pin V
The external heatsink must be connected to the ground plane
Use a thermal conductive, electrically isolating Sil-Pad between the backside of the
TDF8590TH and the external heatsink
The differential inputs enable the best system level audio performance with
unbalanced signal sources. In case of hum due to floating inputs connect the
shielding or source ground to the amplifier ground. The jumper J1 is open on set level
and is closed on the stand-alone demo board
Minimum total required capacity per power supply line is 3300 F
Rev. 02 — 23 April 2007
Figure
Figure
2
10):
80 W SE (4 ) or 1
11):
160 W BTL (8 ) class-D amplifier
TDF8590TH
© NXP B.V. 2007. All rights reserved.
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