Dear Developer team / community,

I'm looking for a diagram of the Class D amplifier as the attached photo, is it possible?

Thanks so much!

HI, Do you have Piezo driver devices  for buzzer or speaker?

Or,  Can you make  solutions of  Class-D amps for Piezo ? 

Best Regards, BANE

I'm using the EVAL_AUDIO_MA2304DNS at 192kHz fs. Currently I have 2 channels that each have 2 biquads configured to be filters. In total I'm using 4 of the available 8 biquads, I'm not using the delay or volume control.  It would be super useful for my application if I could somehow reconfigure the 4 bypassed biquads that I'm not using to get 2 more channels out of the serial audio transmitter. I have a crossover filter set up for 1 sub and 1 main but the end goal is to create a cross over filter for 2 subs and 2 mains. I have enough blocks to implement what I want but I can't move them into the right positions.

Is this reconfiguration possible? I would like to have 4 channels at 192kHz transmit I2S out of the serial audio transmit port each channel with 2 biquads to create a 4th order Linkwitz-Riley crossover filter across the 4 channels. Do I just need to use 2 MA2304DNS's? or buy a different chip?

I have an EVAL_AUDIO_MA2304DNS, it's connected to the GUI and I'm trying to apply a cross over filter to an incoming signal with the integrated DSP. I then want to use the I2S pins on the board to read the digital serial data of the processed signal out. This works when I have an fs of 96k or 48k but when I bump up to 192k the board is super unreliable. on an O-scope I see the Word clock length is unstable and constantly changing size. I'm getting a red PLL error, the I2S input is flashing green and red, and both speakers have a yellow clip warning.

What could be the cause of this problem? is the EVAL board able to do 192k? do I need a new/different board to be able to get 192k? Is there a register setting that I don't know about?

Hello,

I have a question regarding MA2304 and power supply.

According to user manual (v 1.1) pin no. 40 can be connected to PVDD or VDD (J_VDD). If we look into datasheet (INTV2.1.9) maximum voltage is 5V5.

1. If pin no. 40 can be connected to PVDD, can we keep VDD_IO voltage without PVDD?
2. If pin no. 40 can not be connected to PVDD, can we keep VDD and VDD_IO voltages without PVDD?

Thanks!

Przemek

Dear Team

we are aiming to develop a class D amplifier 2CH and 4 CH .

Our present design is based on IRS2092, for 500w system

new amp is target to deliver 

2x 4800W @2Ohm stereo

2x 3200W @4Ohm stereo

2x 1800W @8Ohm stereo

1x 6400W @8Ohm bridge Mono

1x 9600W @4Ohm bridge Mono

can u pl suggest the design/IC/Mosfet

rgds

yogesh singhal

yogesh.singhal@ahujaradios.com

Can any Class-D chip  be used as a power supply?

The idea is to use the same topology as a Class D amplifier, but the following specs:

• AC constant-voltage power source (ie, an "Inverter")
• input: 12V to 24V DC
• output: unipolar 100 kHz sinusoid 
• 0V to 5V RMS
• Inductive load (coupled inductor at each node)
• 0A to 5A continuous per inductive node
• up to four nodes
• up to 125W continuous
• some way to regulate voltage

So, the "audio" input would be a 100 kHz sine wave. That's obviously a different frequency range than audio, so i assume i'd have to use discreet mosfets. 

Perhaps, since i only need a unipolar output, i could use just one mosfet?

I assume to regulate output voltage, i would change the amplitude of the input sine. 

Dear Team

this is regarding the IRS 2452 chip, used to make constant voltage distribution system, IRAUDAMP 23 is reference design for 

• 500 W x 2 channels (1% THD+N, 100 V_rms or 70 V_rms)

can this be converted into Bridge mode to make 1000W x 1 channel 

pl suggest

rgds

yogesh singhal

I have two MA12070 chinese boards and neither of them sounds when I connect them no matter how they don't sound, I realized that the enable PIN was set to High and the Mute PIN was pulled Low so the boards are always muted, if a cross a cable between this PINs I can get sound, can anyone help me solving this?