TDA8926 datasheet(18/32 Pages) PHILIPS

18 / 32 page

2002 Oct 10

Philips Semiconductors

Preliminary speciﬁcation

Power stage 2

× 50 W class-D audio

ampliﬁer

TDA8926

15.5

Reference design bill of material

Table 1

Two-chip class-D audio ampliﬁer PCB (Version 2.1; 03-2001) for TDA8926J and TDA8929T (see

Figs 7 and 8)

COMPONENT

DESCRIPTION

VALUE

COMMENTS

In1 and In2

Cinch input connectors

× Farnell: 152-396

Out1, Out2, VDD,

GND and VSS

supply/output connectors

× Augat 5KEV-02;

× Augat 5KEV-03

on/mute/off switch

PCB switch Knitter ATE 1 E M-O-M

power stage IC

TDA8926J/27J

DBS17P package

controller IC

TDA8929T

SO24 package

L2 and L4

demodulation ﬁlter coils

µH2 × Sumida CDRH127-330

L5, L6 and L7

power supply ferrite beads

× Murata BL01RN1-A62

C1 and C2

supply decoupling capacitors for

VDD to VSS of the controller

220 nF/63 V

× SMD1206

clock decoupling capacitor

220 nF/63 V

SMD1206

12 V decoupling capacitor of the

controller

220 nF/63 V

SMD1206

12 V decoupling capacitor of the power

stage

220 nF/63 V

SMD1206

C6 and C7

supply decoupling capacitors for

VDD to VSS of the power stage

220 nF/63 V

SMD1206

C8 and C9

bootstrap capacitors

15 nF/50 V

× SMD0805

C10, C11,

C12 and C13

snubber capacitors

560 pF/100 V

× SMD0805

C14 and C16

demodulation ﬁlter capacitors

470 nF/63 V

× MKT

C15 and C17

resonance suppress capacitors

220 nF/63 V

× SMD1206

C18, C19,

C20 and C21

common mode HF coupling capacitors

1 nF/50 V

× SMD0805

C22 and C23

input ﬁlter capacitors

330 pF/50 V

× SMD1206

C24, C25,

C26 and C27

input capacitors

470 nF/63 V

× MKT

C28, C29,

C30 and C31

common mode HF coupling capacitors

1 nF/50 V

× SMD0805

C32 and C33

power supply decoupling capacitors

220 nF/63 V

× SMD1206

C34 and C35

power supply electrolytic capacitors

1500

µF/35 V

× Rubycon ZL very low ESR (large

switching currents)

C36, C37,

C38 and C39

analog supply decoupling capacitors

220 nF/63 V

× SMD1206

C40 and C41

analog supply electrolytic capacitors

µF/35 V

× Rubycon ZA low ESR

C43

diagnostic capacitor

180 pF/50 V

SMD1206

C44

mode capacitor

220 nF/63 V

SMD1206

5.6 V Zener diode

BZX79C5V6

DO-35

7.5 V Zener diode

BZX79C7V5

DO-35

clock adjustment resistor

27 k

Ω

SMD1206

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