Showing posts with label Class D Amplifier. Show all posts
Showing posts with label Class D Amplifier. Show all posts

Sunday, March 5, 2017

SMPS for audio

SMPS for audio use - now how often do you see a SMPS (switch mode power supply) that is meant for HIFI audio use? So called audiophile grade SMPS?

What are sold online are mostly SMPS mean for NON-audio usage, such as LED drivers, machine power supplies, and such. What we have here, are specifically designed to work with audio amplifiers, and they can accept HIGH CAPACITANCE LOADS!

For 800W version, for +/-70V version: 470,000UF is acceptable; for +/-35V version: 950,000UF is acceptable.
For 600W version,  for +/-70V version: 350,000UF is acceptable; for +/-35V version: 710,000UF is acceptable. 

Model: P800 SMPS U$150/pc
* Input: AC200-240V, or AC100-120V (please specify when ordering) 
* Output 1 (main): +/-70V5.5A (default)
* Output 2: +/-12V 0.5A
* Output 3: +12V 0.5A
* Acceptable output: +10V to +80V; +/-10V to +/-80V

* Regulation: main unloaded +10%, loaded +/-3%; secondary +/-20%, loaded +/-15% (under AC 220V, 400W load)
* Continuous power: 400W - 500W (25 degC ambient)
* Maximum power: 800W (25 degC ambient, can operate continuously ~5min) 
* Instantaneous power: 1200W (under dynamic music load, <100ms)
* Efficiency: <=95%
* Operating temp: -10 degC - 40 degC
* Storage temp: -30 degC - 85 degC
* Size: 80mm x 145mm x 45mm H

Model: P600 SMPS U$120/pc
* Input: AC200-240V
* Output 1 (main): +/-55V 5A
* Output 2: +/- 12V 0.5A
* Output 3: 12V 0.5A (can be customized) 
* Regulation: main unloaded +/-10%, loaded +/-3%; secondary +/-15%, loaded +/-15% (under AC 220V)
* Continuous power: 300W (25 degC ambient)
* Maximum power: 600W (25 degC ambient, can operate continuously ~5min) 
* Instantaneous power: 900W (under dynamic music load, <100ms)
* Efficiency: <=95%
* Operating temp: -10 degC - 40 degC
* Storage temp: -30 degC - 85 degC
* Size: 70mm x 140mm x 40mm H

Our SMPS employs LLC resonant half bridge switching, possessing high efficiency conversion rate, low interference, excellent dynamic response, stable output and etc. It has over-current, over-voltage, over-temperature, and short-circuit protection function - a perfect match for high end amplifiers. 

Note: product outlook may change by batch to batch.  








Based on the measured waveforms, the primary operating voltage is sinusoidal, from 80kHz to 148kHz, with very standard and smooth sinusoidal waves.

Power supply ground versus mains ground, amplifier ground versus mains ground, both waveform are smooth, without obvious ringing and interference.The incoming mains are perfect and is not affected by the power supply.

FYI: The 50Hz wave are coupled from the Y-class capacitors.


Pin definitions:
L / NC / N: AC mains input, L-live, N-neutral, NC - not connected

V+: +70V
GND: output ground
V-: -70V

FV+: +12V
G: FV+/- common, not connected to main ground, floating
FV-: -12V

DV+ / DV-: floating +12V, potential to ground cannot be >+/-150V

Protect: protection circuit, floating input, potential to ground cannot be >+/-150V, effective at 3-15V, response time ~100ms, once triggered, SMPS will be switched off. Need to power-off 5 mins to resume normal operation.

Warming: these are mains rated SMPS, use with precaution, and at your own risk

Audiobits.


Tuesday, June 14, 2016

Icepower Amplifier


Icepower ICE125ASX2 and ICE50ASX2

  • fully integrated, intelligent audio power conversion solution designed particularly for highly competitive consumer and professional audio products.
  • protected against short-circuit, overload and over-heating and includes onboard fuses and EMI filtering to provide a CE and FCC pre-approved design.
ICE125ASX2 - U$450
  • 125W x2 @ 4 Ohm, Single Ended
  • THD+N 0.003%
  • Maximum current draw 30A, minimum load 3 Ohm (SE)
  • 16cm x 8cm (module size)
  • Fully built with power switch, speaker binding posts, RCA sockets, IEC
ICE50ASX2 - U$350
  • 50W x2 @ 4 Ohm, Single Ended
  • THD+N 0.003%
  • Maximum current draw 20A, minimum load 2 Ohm (SE)
  • 11cm x 8cm (module size)
  • Fully built with power switch, speaker binding posts, RCA sockets, IEC

Icepower 125ASX2

Icepower 125ASX2 power amplifier

Icepower 125ASX2 Power Amp

 
Icepower 50ASX2


Icepower 50ASX2 Power Amp Module

Icepower 50ASX2 Power Amplifier













Notes: 
  • Upgrades available - better casing, upgrade to WBT / Furutech speaker binding posts / RCA connectors, Furutech / IEGO IEC power connectors, Furutech / Mundorf / PCOCC internal wiring
  • Other sizes (power rating) - please email us.
  • Lead time - ~2-3 weeks
Details of the Icepower modules can be found here:
Reviews
All products carry 1 year free after sales services. Tubes has 3 months warranty only. If you leave good comments at our pages to help with our sales via words of mouth: for 100 words, you get 6 months tubes warranty; for 150 words, you get 2 year free services.

Use the form on the right to order.