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Reduce Standby Power To &lt;10mW FAN302HL PSR/SSR Mixed PWM Controller. The Power Saving Challenge. Low Standby Power : Need a solution to comply to future energy efficiency regulations Source: Consortium of Mobile-Phone Makers.

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reduce standby power to 10mw fan302hl psr ssr mixed pwm controller
Reduce Standby Power To <10mW

FAN302HL

PSR/SSR Mixed PWM Controller

the power saving challenge
The Power Saving Challenge
  • Low Standby Power: Need a solution to comply to future energy efficiency regulations

Source: Consortium of Mobile-Phone Makers

5 Star Level Score Chart from the Consortium of Mobile-Phone Makers calls for standby power < 30 mW for mobile charger

Expect < 30 mW could soon extend to more applications and higher power

More stringent standards are expected to come.

smaller form factor challenge
Smaller Form Factor Challenge
  • Design trend moving to even smaller form factors
  • Reducing even more components
  • Integration is necessary
constantly drawing power standby power loss
Constantly drawing Power – Standby Power Loss
  • Today, between 6 and 10 billion power supplies plugged-in constantly draw power
  • Figures for most developed countries show 5% to 10% of power consumption going to standby power
  • Numbers illustrate the growing concern of energy waste and attention drawn to reducing standby power
key growth area of ac dc power supplies mobile communication
Key Growth Area of AC-DC Power Supplies – Mobile Communication
  • Key growth area will be communications, driven by mobile phones
  • A 60% increase in just four years

Source: Selantek Power Supply Report 2010

market trend for smart devices
Market Trend for Smart Devices
  • If we take US market as an example :
    • Smartphone and feature phone shipments will meet the cross point in US market
    • Smartphone shipment will increase sharply in the coming years, but feature phone shipment will continuously drop
    • Among various PCs, the Tablet will have the highest growth rate
  • The growth trend for smart devices is spreading to the whole world

Note: Percentages may not total 100% because of rounding

Source: Forrester Research eReader Forecast, 2010 to 2015 (US)

Source:Nielson (2010/11)

system losses at no load
System Losses at No Load
  • Switching Loss
  • Conduction Loss
mwsaver technology for smart devices
mWSaver™ Technology for Smart Devices
  • mWSaver™ technology is an optimized combination of process and circuit technologies that will be embedded in key power adapter components
  • All components with the mWSaver technology brand designation will feature the industry’s lowest standby/no-load power consumption per component
  • mWSaver Technology Solution for Smart Devices, FAN302HL:
    • PWM controller that achieves under 10 mW standby power.
    • Suitable for application from 5 W~15 W, the power range for Smart Devices (smart phones and tablet PCs).
slide9

Achieve Standby power <10 mW

  • New Primary Side CC Charger controller IC
  • Three dynamic partial shutdown strategies
    • Normal Mode: CC and CV heavy load
    • Green Mode: CV mid. and light load
    • Burst Mode:CV no load
smaller form factor with higher switching frequency
Smaller Form Factor With Higher Switching Frequency
  • Higher frequency reduces transformer size
    • FAN302HL is a PWM controller with 85kHz switching frequency while the conventional ones are around 50kHz
    • The transformers used for 85kHz are only 32% of those used for 50kHz

Used for 5 W/50kHz

Dimensions:

16W x18D x 14H(mm)

=4032mm2

Used for 5 W/85kHz

Dimensions:

12W x 12D x 9H(mm)

=1296mm2

smaller form factor with v s ovp
Smaller Form Factor With VS OVP
  • Reduce PCB size by reducing external components with VS OVP
  • VS OVP for safer system and reduced part count

External 2nd side OVP circuit :

Photo coupler

TL431

2x BJT

Capacitors and resistors

other benefits from fan302hl
Other Benefits from FAN302HL

CV & CC

  • Good CV dynamic
  • CV±5% vs. CC ±10%
  • Ripple < 100mV
  • Meets Highest Efficiency Standards

± 5%

± 10%

CC from PSR

CV from SSR

mwsaver technology provides the best in class standby power
mWSaver™ Technology – Provides the Best-in-Class Standby Power
  • FAN302HL provides <10mW standby power for applications 15W and below
  • mWSaver™ technology is being designed into a series of SMPS ICs that will be released throughout 2011.
  • By developing solutions like mWSaver technology and the FAN302HL, Fairchild enables engineers to drive innovation in their designs for maximum performance, simplified design and reduced bill of materials costs.
slide15

The Right Technology for Your Success™

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