Controller ICs meet PFC/Energy regulations.
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Press Release Summary:
Utilizing variable on-time control method, critical conduction mode PFC Models FAN7529 and FAN7530 achieve THD performance of less than 10% at 25% load, 265 Vac. Units meet stand-by power regulations by reducing input voltage sensing loss to 100 mW. Open feedback protection and 65 µA disable function make Vcc shut-down circuitry unnecessary. Additional features include 150 µs internal start-up timer, MOSFET over-current protection, and under-voltage lockout with 3.5 V hysteresis.
Original Press Release:
Fairchild's CRM PFC Controller ICs Feature Industry-Leading THD Performance
Low Standby Power to Meet PFC/Energy Regulations
FAN7529/FAN7530 provide energy-saving, reliable solution for ballast and LCD TV designs
South Portland, Maine--December 12, 2006--Fairchild Semiconductor (NYSE: FCS) introduces critical conduction mode (CRM) power factor correction (PFC) controller ICs specially designed to meet stringent stand-by power and harmonic regulations affecting ballasts, notebook adaptors, LCD TVs and LCD monitors. The FAN7529 and FAN7530 utilize a patent-pending variable on-time control method to achieve industry-leading Total Harmonic Distortion (THD) performance (<10 percent at 25 percent load, 265Vac) for excellent system reliability. They also easily meet stand-by power regulations by reducing input-voltage sensing loss to approximately 100 milliwatts. These highly integrated PFC controllers, the FAN7529/FAN7530, eliminate components compared to both passive solutions and similar controllers on the market, therefore helping designers to reduce part count and save system costs.
"Fairchild's FAN7529 and FAN7530 PFC controllers offer designers the best THD performance on the market, an important consideration since government regulations specify that manufacturers must reduce harmful noise that can affect system reliability," said CJ Kim Fairchild's product manager, Power Conversion product line. "Fairchild uses a unique variable on-time control method based on ZCD winding voltage to achieve less than 10 percent THD at 25 percent of the full load. As a result, when designing four lamp ballasts, a designer can control THD to be less than 10 percent even if only one lamp is turned on. This low THD translates into excellent system performance and offers more flexibility to system designers."
Fairchild's FAN7529 and FAN7530 utilize an internal voltage-mode PWM method compared with conventional current-mode controllers requiring rectified AC-line voltage information even when the PFC IC does not operate. As a result, Fairchild's CRM PFC controllers reduce overall power loss by approximately 200 milliwatts. Moreover, Fairchild's controllers offer a disable function to further reduce power consumption during stand-by mode, and their current-type error amplifiers enable these devices to use a higher Rfb (output-voltage-sensing resistor) over 1 megohm, resulting in reduced power loss (80 milliwatts, 2 megohms).
To increase system reliability, Fairchild's controllers feature open-feedback protection and a disable function (65 microamps), making Vcc shut-down circuitry unnecessary. They also offer adjustable-output over-voltage protection (OVP) of plus/minus 2 percent. This type of voltage-sensing OVP is immune to noise. The devices also offer a 150 microsecond internal start-up timer, MOSFET over-current protection and under-voltage lockout with 3.5V hysteresis.
In addition to these PFC controllers, Fairchild also offers the FAN7528, a dual-output CRM PFC controller IC. The FAN7529 and FAN7530 add to Fairchild Semiconductor's offering of discrete and IC product solutions, the broadest in the industry targeting switch-mode power supplies from 1W to 1500W.
The FAN7529 and FAN7530 are offered separately as pin-out options for meeting specific requirements and design preferences. Both are available in DIP-8 and SOP-8 packages. These lead-free products meet or exceed the requirements of the joint IPC/JEDEC standard J-STD-020C and are compliant with the European Union requirements which are now in effect.
Price (each, 1000 pcs): US$ 0.70--FAN7529
US$ 0.64--FAN7530
Availability: Samples and demo board available now
Delivery: 8 weeks ARO
Contact: To contact Fairchild Semiconductor about these products, please go to: www.fairchildsemi.com/cf/sales_contacts/
For information on other Fairchild products, design tools, and sales contacts, please visit: www.fairchildsemi.com.
About Fairchild Semiconductor:
Fairchild Semiconductor (NYSE: FCS) is the leading global supplier of high-performance power products critical to today's leading electronic applications in the computing, communications, consumer, industrial and automotive segments. As The Power Franchise®, Fairchild offers the industry's broadest portfolio of components that optimize system power. Fairchild's 9,000 employees design, manufacture and market power, analog & mixed signal, interface, logic, and optoelectronics products. Please contact us on the web at www.fairchildsemi.com.
Fairchild Semiconductor
Suzanne Bowser
Strategic MarCom Manager
Fairchild Semiconductor
3001 Orchard Parkway
San Jose, CA 95134
(408) 822-2314 Fax: (408) 822-2410
Email: suzanne.bowser@fairchildsemi.com
