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-   -   IRS2092 (IRAUDAMP7S) + IRFI4019 (http://www.diyaudio.com/forums/vendors-bazaar/180625-irs2092-iraudamp7s-irfi4019.html)

ljm_ljm 7th January 2011 02:03 AM

IRS2092 (IRAUDAMP7S) + IRFI4019
 
1 Attachment(s)
MY DESIGNER。

Reference IR official circuits and wiring.
IRAUDAMP7S-150
By IRS2092 + IRFI 4019 MOSFET FOR audio only.
Full-line design,
Supply voltage range of + - 45V ---- + - 60V
+-55V 150W 8R, 300W 4R.


EMAIL : 646216200@qq.com
:p

ljm_ljm 7th January 2011 02:25 AM

1 Attachment(s)
Power Inductors for Digital Amplifier

nigelwright7557 7th January 2011 02:46 AM

Quote:

Originally Posted by ljm_ljm (Post 2424120)
MY DESIGNER。

By IRS2092 + IRFI 4019 MOSFET FOR audio only.

:p

Interesting, that combination is the same as my 2092 design.
The 4019 has low gate capacitance and I use four of them in my design.

I tried the reference design but had a number of issues with it.
To start with the 2092 just kept resetting.
1/ I had to decouple the mosfets very closely.
2/ The VCC rail had glitches on it and needed extra decoupling.
3/ My 12 volt regulator didnt like the 2092 pulsing current and needed extra decoupling.
4/ I kept getting huge thumps through my speaker on power down. The startup capacitor was too big in the ref design and I used 1uf.

I blew up 7 2092's trying to get it working as unplugging the 2092 then plugging it back in with charge on the capacitors blew it up.

Finally got there now with a good solid design.

ljm_ljm 7th January 2011 05:33 AM

I think to the IC does not require separate external power supply VCC 12V regulated DC power supply.

In the IR official design is the use of 1N4744, resistor divider-type power supply.

This has several advantages, resistance and voltage RC after forming a capacitor filter.

But also in the partial pressure of three of the input voltage terminal, there is a 1K 1W power resistor string can explain the problem.

nigelwright7557 7th January 2011 08:39 PM

Quote:

Originally Posted by ljm_ljm (Post 2424307)
I think to the IC does not require separate external power supply VCC 12V regulated DC power supply.
.

I used a dropper resistor from 45 volts and a 78L12 voltage regulator.

ljm_ljm 8th January 2011 02:55 AM

This version of line parts are used, but did not use many of the posts with digital amplifier chip components.

This is because the line components reliability, power consumption than the post-chip components are to be good.

Quote sheet resistance are basically carbon, 5% error, temperature drift great. The line of metal film resistors 1% tolerance, low temperature drift of 50
PPM.

Post-chip capacitors are made of ceramic such composition, temperature drift large and very small pressure, not suitable for high-power machines.
Line oscillator form with CBB to do, almost no temperature drift and error, at very low or very high temperatures can also be good work.

ljm_ljm 8th January 2011 12:25 PM

1 Attachment(s)
IR compare the official public version. Basically, from the test results, no significant difference.

Cristi 10th January 2011 10:05 AM

Here is mine...
 
2 Attachment(s)
Single channel, IRS2092S driven class D amp, output power up to 600W (with other MOS-FET's and caps) the shown one has 300W. the main application is multi-channel amplifiers. it only requires the main differential supply voltage, and has some ingenious power management scheme to save power as much as possible. Dead-time is set to min. 25ns, and the pk-pk overshoot is about 2V only, due to the tight layout.
I've made them for a friend who integrates them in some amps which he build. Soon i will have a batch for sale on my site too.

Whortless 10th January 2011 01:59 PM

Quote:

Originally Posted by Cristi (Post 2427809)
Single channel, IRS2092S driven class D amp, output power up to 600W (with other MOS-FET's and caps) the shown one has 300W. the main application is multi-channel amplifiers. it only requires the main differential supply voltage, and has some ingenious power management scheme to save power as much as possible. Dead-time is set to min. 25ns, and the pk-pk overshoot is about 2V only, due to the tight layout.
I've made them for a friend who integrates them in some amps which he build. Soon i will have a batch for sale on my site too.

Hi Cristi,
Excellent boards! There are really nice SMPS and amp modules in your web site!
By the way are you using a single power IC (for eg. FSFR series from Fairchild) for HB resonant mode smps' or your are making your own control via pwm cont./driver/mosfet combination?
Congratulations! and happy new year.

Cristi 10th January 2011 03:50 PM

Quote:

Originally Posted by Whortless (Post 2427999)
Hi Cristi,
Excellent boards! There are really nice SMPS and amp modules in your web site!
By the way are you using a single power IC (for eg. FSFR series from Fairchild) for HB resonant mode smps' or your are making your own control via pwm cont./driver/mosfet combination?
Congratulations! and happy new year.

Thank you for your kindness,
I have been playing with most of the existing LLC IC's, both integrated (FSFR1700-2100) and controllers, and for the power supplies which i made for audio i have used exclusively L6599 till now due to design flexibility. with other ic's, I have made some power supplies in range of hundreds of watts to several KW levels, for target applications, not audio (3.6KW battery charger for EV) using UCC25600 and NCP1395. both this ic's allows HB or FB configuration, and DT can be adjusted conveniently.
With FSFR2100 i will have a SMPS for audio in short time from now, which will have something special than the available ones.


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