Philips UM10155 User Manual
UM10155
Discrete Class D High Power Audio Amplifier
Rev. 02 — 5 September 2006 User manual
Document information
Info Content
Keywords Class D Audio Amplifier, Universal Class D, UcD, PWM Audio Amplifier,
High Power Audio.
Abstract This user manual describes the operating instructions and the most
important background information of the Philips Semiconductor Discrete
Class D High Power Audio Amplifier Demonstrator Board. With proper
heatsinking of the Power MOSFETs and a well dimensioned powersupply,
the PWM amplifier is capable of supplying 200 W of high quality audio
power into a 4 Ω loudspeaker.
Philips Semiconductors
Revision history
Rev Date Description
02 20060905 corrected
01 20060801 initial version
UM10155
Discrete Class D High Power Audio Amplifier
Figure 9.
Contact information
For additional information, please visit: http://www.semiconductors.philips.com
For sales office addresses, please send an email to: sales.addresses@www.semiconductors.philips.com
UM10155_2 © Koninklijke Philips Electronics N.V. 2006. All rights reserved.
User manual Rev. 02 — 5 September 2006 2 of 12
Philips Semiconductors
1. Introduction
The Universal Class D (UcD) version 1.00 demonstrator board implements a 200 W true
RMS (into a 4 Ω load) high quality audio power amplifier on a very compact printed-circuit
board. The amplifier is built-up of discrete components only, and makes use of Philips
patent WO 03/090343.
UM10155
Discrete Class D High Power Audio Amplifier
001aaf148
Fig 1. General view
The demonstrator board is intended to illustrate the capability of Philips PowerMOSFETs
in discrete high-end PWM audio amplifier applications. The board is self-contained and
only requires a simple (non-stabilized) dual power supply, an audio source (e.g. function
generator,CD player) and a loudspeaker to demonstrate its capabilities. For evaluation at
high output power a provision is made to attach an appropriate heatsink to the MOSFETs
on the board.
UM10155_2 © Koninklijke Philips Electronics N.V. 2006. All rights reserved.
User manual Rev. 02 — 5 September 2006 3 of 12
UM10155_2 © Koninklijke Philips Electronics N.V. 2006. All rights reserved.
User manual Rev. 02 — 5 September 2006 4 of 12
xxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx x xxxxxxxxxxxxxx xxxxxxxxxx xxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx
xxxxx xxxxxx xx xxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxx xxxxxxx xxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxx xxxxxxxxxxxxxx xxxxxx xx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxx xxxxx x x
2. Circuit diagram
Philips Semiconductors
R29
10 Ω
R6
C2
47 kΩ
100 nF
R2
1 kΩ
C3
100 nF
BC857
BF821
Q1
Q5
R1
560 Ω
R5
47 kΩ
C1
4.7 nF
J3
J4
J1
J2
Q3
BF820
BC847
R8
220 Ω
Q4
BF721
R3
47 Ω
D1
1PS76SB10
D2
1PS76SB10
Q7
R7
220 Ω
R4
47 Ω
Q8
R9
330 Ω
BF820
BC847
BF821
R13
2.2 kΩ
R12
22 kΩ
C4
220 pF
R14
5.6 MΩ
Q2
Q6
R10
220 Ω
R28
10 Ω
R15
3.9 MΩ
R27
8.2 kΩ
R11
1 kΩ
Q15
D6
BAS321
BF720
D5
PDZ12B
R16
4.7 kΩ
D8
PDZ12B
D7
BAS321
C5
100 µF
C7
100 µF
C6
100 nF
C8
100 nF
R18
390 Ω
D9
1PS76SB10
R17
390 Ω
D10
1PS76SB10
Q10
BC857
Q9
BC857
R20
27 Ω
R19
27 Ω
D11
BAS316
R8
1 kΩ
D12
BAS316
R21
1 kΩ
PHP18NQ11T
Q12
PBSS5140T
PHP18NQ11T
Q11
PBSS5140T
Q14
Q13
R26
0.05 Ω
R25
0.05 Ω
R24
10 Ω
L1
28 µH
R23
10 Ω
C9
100 pF
C10
100 pF
C12
100 nF
C13
100 nF
C11
22 µF
C14
22 µF
C16
100 nF
C15
680 nF
C18
100 nF
C17
1000 µF
C19
1000 µF
001aaf149
J5
J6
J10
J11
Discrete Class D High Power Audio Amplifier
J7
J8
J9
Fig 2. Circuit diagram
UM10155
Loading...