Class D Audio Amplifier IC Forum Discussions
My MA12070 Audio Amplifier Board designed to match the reference design is not giving any output . Input is a pure sine wave and I can see it being input correctly across to 1uF caps to IN0A and IN0B. But There is absolutely no output on OUT0A and OUT0B individually or soldered to OUT1A and OUT1B respectively.
I am running in PBTL mode by connecting MSEL0 and MSEL1 to GND
VDD = 24V and VCC = 5V . I cant seem to find any fault with the ckt. Any help will be appreciated.
Dear Developer team
we are having a class D amplifier system , based on IRS2092 device, it is 500W system,, based on 2092 and Fairchild mosfet FDP51N25.
system is running fine with 4ohm, 8ohm load. and quite stable.
we tested on a low frequency sub woofer speaker system of 4OHM (without any passive cross over inside the speaker box; speaker box has 2 pcs of 18" subwoofer each 8ohms, in made parallel to have 4ohm, each speaker DCR is 5.8ohm)..this work fine, very good lows and sound performance.
We have tested the same amplifier with a Full range speaker system (2 full range speaker of 8 ohms (650w Each), and 1 HF (100W) unit of 8hm., this speaker column has in built passive crossover) ..... here we have a issue.
When we are driving the speaker column, our amp is going in protection mode and gets shut down, even we are not driving to the full power. input signal is 0.750mV, , speaker column ( each speaker DCR is 5.8ohm)
woofer with out crosss over is working fine, speaker with the passive crossover is the issue?
can u pl suggest what is the issue, why amp do not work well speaker column.
yogesh singhal'Show Less
I wunder if there is a simple procedure docuented somewhere to use the EVAL-AUDAMP25 with the MA5332MS in a parallel single ended conficuration to support 2 Ohm loads with a split +/-40V supply?
I have seen that some components potentially need to be changed, e.g. C16, RN removed and Cpse and Rpse assembled but this only accounts for the optional external clock. How about R71 and R72?
How can I use the volume/gain control with the CS3310 in this case? I need a inverted signal for AinL vs AinR, correct?
With the 40V max supply in the eval baord and a 2 Ohms load, how would I ever be able to test the overcurrent detection? I need to reduce the load to less then 2 Ohms then, correct?
Is it correct that the +/-40V limit for the eval baord is mainly driven from the capacitor rating (50V types) and LDOs for the aux supplies. When replacing this, I could use it at +/-60V as well?
we are haveing design of audio amp, 500w, system based on IRS2092S, and mosfte FDP51N25
we are having issue that when load is at 2ohm, set is going in shut down.
Till 3ohm resistive load all is fine, we are checking from 50Hz to 20KHZ full range.
is our OCT setting is not ok?
can u suggest the IRS2092S , and associated circuits values
I have a project that uses a digital audio amplifier chip MA12070P, which works in conjunction with a DSP chip. When I was doing PCB testing, I discovered an issue,
After each restart of the DSP chip, the MA12070P will not function properly again due to a brief loss of MCLK signal from the DSP chip.
This phenomenon can cause significant noise in the speaker, which often requires me to power off or repeatedly restart the DSP chip several times before the entire system can function properly.. May I ask if there is any solution to this problemShow Less
Dear Team we are using IR2092 device to make 500w class D amplifier.
In this design we are using totem pole driver mosfet ZXTN25100BFTA, and ZXTP25100BFTA,
Due to long lead time of ZXTP25100BFTA device... we are having supply issue in purchasing ZXTP25100 part, ZXTN25100 is available.
can u suggest some alternate part for these 2;
can we use ZXTP2092FTA instaed of ZXTP25100
Hello, I would like to inquire about the graphic development tool for MA2304DNS
As shown in the figure, can the USB debugger in red be replaced by a universal USB to IIC development board.
Connect SDA, SCL, GND to MA2304DNS??
A quick question wondering whether there is any advantage in using a higher or lower freuqency as CLK input for the MA12070P.
In my circuit, I have an I2S MCLK that is always on, generated from a TCXO, 24.576 MHz, as well as the I2S BCLK of 3.072 MHz which I feed into the MA12070P SCLK input.
Since I'm using 48kHz sampling frequency, I have the option to feed both MCLK or BCLK to the system CLK input of the MA12070P. Which one is better?