#power reference design

It accords with the star (ENERGY STAR who implements the American energy of July of this year to fit the American semiconductor full of trees and take the lead in putting out the first in the industry? )Disclose the reference design to the newest canonial ATX power of performance requirement of the desk-top computer ATX power, power efficiency which the star that the new reference design can surmount the energy in cases all appoint load requires, offer to power products manufacturer, utilize existing high the intersection of cost performance and technology high the intersection of efficiency and the intersection of reference and original version that power appears on the market.

The ones that fitted the reference design of the American semiconductor full of trees and can be up to 86.5% when the upper voltage is input were fully loaded with high efficiency, reaches 82.5% of the efficiency when 20% of the load and low-voltage are input, compare with common average power of 70% of the efficiency on the market at present, this design can reduce the power and loss 50% of Damien. In addition, it still accords with IEC61000-3-2 power factor requirement to fit ATX reference design of the American semiconductor full of trees.

Fit the American semi-conductive cars and senior vice-presidents and concurrently general manager William of product division of power management full of trees and think (Andy Williams) Point out: "Fit 300 W GreenPoint of the American semiconductor full of trees? ATX reference design reflected the firm ambition that we offer innovating, extremely high efficiency power solution of whole. We and the whole world each standardize the standard to presume organization and customer close cooperation develop this high cost performance and power solution of the star requirement who accords with the energy. Fit the American semiconductor full of trees and put out more GreenPoint continuously? The power solution comes to meet the global requirements for power working and efficiency of awaiting the opportune moment. "

ATX reference design

This reference design can meet all domain block demands of 300 W ATX power, including power factor correction (PFC) The intersection of switched-mode and power supply control and voltage regulation, back voltage regulation and await the opportune moment power,etc.. This design has adopted several fund to fit the newest power management device of American semiconductor full of trees, and adequate gives play to its inner discrete component series of leading family property, to reach remarkable efficiency and behave.

Fit ATX power reference design of the American semiconductor full of trees to offer the intact file, including specification, circuit diagram, bill of materials, Gerber picture and assessment guide, the gentle bag can offer the link of relevant industry information and other support information at the same time from www.onsemi.com/ATX download. The key products in the reference design include:

NCP1653: This is that one adopts mode (CCM) of conducting continuously 8 small and exquisite for pin PFC control device, device is in order to lasting component number and be offer to last cost performances high and be need range the forward ends of the switches, let the choice of adding PFC forward end into ATX power design become easy. NCP1653 adopts 8 unleaded pins SOIC and PDIP to capsulate, every batch unit price of 2,500 scenes is 0.80 dollars.

NCP1562: This active clamp pulse length modulation (PWM) Voltage the intersection of mode and control device have ±5% duty ratio, limit, can avoid common Qian Yu to active the intersection of pincers and vibratory soft stop function of bit organization while being built-in. This device has protective circuit of excess current of double-mode dealing with twinkling of an eye and serial excess current situation separately. NCP1562 adopts 16 unleaded pins TSSOP and SOIC to capsulate, every batch unit price of 2,500 scenes is 1.60 dollars.

NCP1027: This high-voltage switching device includes a power MOSFET and starts the current source, and is connected to the large-scale capacitor directly, in order to avoid the fatal situation out of control under the low input voltage situation, has also joined adjustably and input the protective circuit of voltage shortage to close at this situation, until reaching the sufficient input level, NCP1027 adopts 8 unleaded pins PDIP to capsulate, every batch unit price of 1,000 scenes is 0.97 dollars.

NCP4330: The stabilizator replaces the magnetic amplifier after this moves ahead simultaneously ,, Offer more high efficiency for ATX power supply, NCP4330 adopts 8 unleaded pins SOIC to capsulate, every batch unit price of 2,500 scenes is 0.60 dollars.

MSR860: This sincere 8 A, does 600 V power commutate the utensil and prepare against SWITCHMODE? Soft to reply the function, MSR860 adopts unleaded TO-220 to capsulate, every batch unit price of 50 scenes is 1.07 dollars.