Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

TDA8932B Datasheet(PDF) 22 Page - NXP Semiconductors

Part No. TDA8932B
Description  Class-D audio amplifier
Download  48 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  NXP [NXP Semiconductors]
Homepage  http://www.nxp.com
Logo 

TDA8932B Datasheet(HTML) 22 Page - NXP Semiconductors

Zoom Inzoom in Zoom Outzoom out
 22 / 48 page
background image
TDA8932B_4
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 04 — 18 December 2008
22 of 48
NXP Semiconductors
TDA8932B
Class-D audio amplifier
14. Application information
14.1 Output power estimation
The output power Po at THD+N = 0.5 %, just before clipping, for the SE and BTL
configuration can be estimated using Equation 2 and Equation 3.
SE configuration:
(2)
BTL configuration:
(3)
Where:
VP = supply voltage VDDP1 − VSSP1 (V) or VDDP2 − VSSP2 (V)
RL = load impedance (Ω)
RDSon = on-resistance power switch (Ω)
Rs = series resistance output inductor (Ω)
RESR = equivalent series resistance SE capacitor (Ω)
tw(min) = minimum pulse width (s); 80 ns typical
fosc = oscillator frequency (Hz); 320 kHz typical with Rosc = 39 kΩ
The output power Po at THD+N = 10 % can be estimated by:
(4)
Figure 8 and Figure 9 show the estimated output power at THD+N = 0.5 % and
THD+N = 10 % as a function of the supply voltage for SE and BTL configurations at
different load impedances. The output power is calculated with: RDSon = 0.15 Ω (at
Tj =25 °C), Rs = 0.05 Ω, RESR = 0.05 Ω and IO(ocp) = 4 A (minimum).
P
o 0.5%
()
R
L
R
L
R
DSon
R
s
R
ESR
++
+
----------------------------------------------------------


1t
wmin
()
f
osc
×
()
×
V
P
×
2
8R
L
×
-------------------------------------------------------------------------------------------------------------------------------------------
=
P
o 0.5%
()
R
L
R
L
2
+
R
DSon
R
s
+
()
×
------------------------------------------------------


1t
wmin
()
f
osc
×
()
×
V
P
×
2
2R
L
×
--------------------------------------------------------------------------------------------------------------------------------------
=
P
o10%
()
1.25
P
o 0.5%
()
×
=


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30  31  32  33  34  35  36  37  38  39  40  41  42  43  44  45  46  47  48 


Datasheet Download




Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn