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UG_1811_PL88_1812_191445
IRAUDAMP23
500 W x 2 channel constant voltage Class D audio amplifier using the
IRS2452AM
About this document
Scope and purpose
The IRAUDAMP23 evaluation board is a two-channel, 500 W/ch (100 Vrms, 20 Ω at ±148.3 V) half-bridge Class D
audio power amplifier for high impedance distribution system. This evaluation board demonstrates how to use
the IRS2452AM controller IC, implement protection circuits, and design an optimum PCB layout.
Applications
Constant voltage distribution system
Installation system
Paging system
Features
Output power:
500 W x 2 channel (1% THD+N, 100 Vrms or 70 Vrms)
Multiple protection features:
PWM modulator:
Application Note
www.infineon.com
- Over-current protection (OCP), high side and low side FETs
- Over-voltage protection (OVP)
- Under-voltage protection (UVP), high side and low side FETs
- Over-temperature protection (OTP)
- Self-oscillating half bridge topology with otional clock synchronization
Please read the Important Notice and Warnings at the end of this document
page 1 of 22
V 1.0
2018-11-06
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Summary of Contents for Infineon IRAUDAMP23
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Page 1: About This Document
About this document Scope and purpose The IRAUDAMP23 evaluation board is a two-channel, 500 W/ch (100 Vrms, 20 Ω at ±148.3 V) half-bridge Class D audio power amplifier for high impedance distribution system. This evaluation board demonstrates how to use the IRS2452AM controller IC, implement protection circuits, and design an optimum PCB layout. -
Page 2: Table Of Contents
Thermal information ......................12 Peak power duration thermal information ..................12 Heatsink installation ..........................13 Schematic ..........................14 MOSFET selection guide ........................14 IRAUDAMP23 Bill of Materials ....................15 PCB specifications ......................... 19 Revision history..........................21 Application Note 2 of 22 V 1.0... -
Page 3: Specifications
Voltage gain 37.5 dB Table 2 Electrical data Data Typical Notes/conditions Infineon devices used IRS2452AM integrated Class D IC Modulator Self-oscillating, second order sigma-delta modulation, analog input 500 W 1 kHz, 100 Vrms, R =20 Ω Output power CH1-2: (1% THD+N) -
Page 4: Connection Setup
IRAUDAMP23 500 W x 2 channel constant voltage Class D audio amplifier using the IRS2452AM Connection setup Connection setup ± 80V~± 160V, 5A DC Supply Load Load 20V, .5A ± 20V, .5A DC DC Supply Supply Audio Signal Generator Figure 1... -
Page 5: Connector Description
CH2 OUT Output for CH2 RESET On/off switch PHASE Channel in/out phase switch EXT CLK External clock sync Audio precision-setup: IRAUDAMP23 and Audio Precision shall be connected according to the figure below: Application Note 5 of 22 V 1.0 2018-11-... - Page 6 IRAUDAMP23 500 W x 2 channel constant voltage Class D audio amplifier using the IRS2452AM Connector description B a l i n p u t B a l i np u t B a l o u t p u t AUX-0025 filter ±...
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Page 7: Test Procedures
IRAUDAMP23 500 W x 2 channel constant voltage Class D audio amplifier using the IRS2452AM Test procedures Test procedures Test setup: 1. Connect 20 - 250 W dummy loads to the output connectors (P2, P3 as shown on figure 1). - Page 8 IRAUDAMP23 500 W x 2 channel constant voltage Class D audio amplifier using the IRS2452AM Test procedures Power-down sequence: 1. Flip S1 switch to the off position. 2. Turn off the ±160 V power supply, then turn off the 20 V power supply, lastly turn off ±20 V power supply at the same time.
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Page 9: Performance And Test Graphs
IRAUDAMP23 500 W x 2 channel constant voltage Class D audio amplifier using the IRS2452AM Performance and test graphs Performance and test graphs Figure 3 Power vs. THD+N Test conditions: = ± 148.3 V, input signal = 1 kHz, load impedance = 20 ohms, F... - Page 10 IRAUDAMP23 500 W x 2 channel constant voltage Class D audio amplifier using the IRS2452AM Performance and test graphs Figure 4 Frequency response Test conditions: = ±160 V, set output = 1 W, load impedance = 23 ohms Figure 5...
- Page 11 IRAUDAMP23 500 W x 2 channel constant voltage Class D audio amplifier using the IRS2452AM Performance and test graphs Figure 6 Noise floor with 1 V output Test conditions: = ± 160 V, output = 1 V @ 1 kHz, load impedance = 23 ohms...
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Page 12: Thermal Information
IRAUDAMP23 500 W x 2 channel constant voltage Class D audio amplifier using the IRS2452AM Thermal information Thermal information Peak power duration thermal information Test conditions: 1 kHz sine wave signal input; both channels driven, F =325 kHz Table 4... -
Page 13: Heatsink Installation
IRAUDAMP23 500 W x 2 channel constant voltage Class D audio amplifier using the IRS2452AM Thermal information Heatsink installation Figure 8 Heatsink installation Application Note 13 of 22 V 1.0 2018-11-... -
Page 14: Schematic
4.7k Vaa / Vss Vss EXTERNAL -15v MJD350 0.01uF, 50V For EMI Figure 9 Schematic of IRAUDAMP23 Class D audio amplifier featuring IRS2452AM and IPP60R180C7 MOSFET selection guide Table 5 MOSFET 70 V 100 V IPP60R120C7 500 W 500 W... -
Page 15: Iraudamp23 Bill Of Materials
IRAUDAMP23 500 W x 2 channel constant voltage Class D audio amplifier using the IRS2452AM IRAUDAMP23 Bill of Materials IRAUDAMP23 Bill of Materials Table 6 No Part Number Designator Description Quantity Vendor 493-14485-ND C5A, C5B, C9A, C9B, CAP ALUM 0.1 µF 10% 50 V... - Page 16 IRAUDAMP23 500 W x 2 channel constant voltage Class D audio amplifier using the IRS2452AM IRAUDAMP23 Bill of Materials No Part Number Designator Description Quantity Vendor 277-2427-ND TERM BLOCK HDR 6POS Digikey 90DEG 3.5 mm 277-2414-ND TERM BLOCK PLUG 6POS Digikey STR 3.5 mm...
- Page 17 IRAUDAMP23 500 W x 2 channel constant voltage Class D audio amplifier using the IRS2452AM IRAUDAMP23 Bill of Materials No Part Number Designator Description Quantity Vendor RHM4.7GCT-ND R1, R18A, R18B RES SMD 4.7 Ω 5% 1/10 W Digikey 0603 RHM4.7KARCT-ND R2, R3 RES SMD 4.7 kΩ...
- Page 18 IRAUDAMP23 500 W x 2 channel constant voltage Class D audio amplifier using the IRS2452AM IRAUDAMP23 Bill of Materials No Part Number Designator Description Quantity Vendor RMCF0805JT10K0CT-ND RES SMD 10 kΩ 5% 1/8 W Digikey 0805 RHM4.7KGCT-ND R4, R45, R46 RES SMD 4.7 kΩ...
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Page 19: Pcb Specifications
IRAUDAMP23 500 W x 2 channel constant voltage Class D audio amplifier using the IRS2452AM PCB specifications PCB specifications Two layer SMT PCB with through holes 1/16 thickness 2/0 oz. Cu FR4 material 20 mil lines and spaces ... - Page 20 IRAUDAMP23 500 W x 2 channel constant voltage Class D audio amplifier using the IRS2452AM PCB specifications Figure 11 Bottom layer Application Note 20 of 22 V 1.0 2018-11-...
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Page 21: Revision History
IRAUDAMP23 500 W x 2 channel constant voltage Class D audio amplifier using the IRS2452AM Revision history Revision history Document Date of release Description of changes version Application Note 21 of 22 V 1.0 2018-11-... - Page 22 Infineon Technologies hereby disclaims dangerous substances. For information on the types © 2019 Infineon Technologies AG. any and all warranties and liabilities of any kind in question please contact your nearest Infineon All Rights Reserved. (including without limitation warranties of non- Technologies office.
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