1. FAIRCHILD TRAVEL ADAPTER SOLUTION
Power Conversion
201406

2. Charger Market Demands
Smaller form factor
Lower standby
Higher efficiency
Adaptive charging
FCS’ Plan to Fulfill the Market :
FSEZ / FSR
(MOS inside)
SR Controller
Lower Standby Power / High Frequency
Pure PSR
PSR+SSR
Adaptive Charging

3. Why Adaptive Charging be Needed
3.5” iPhone
Retina iPhone
Retina iPad
FHD 6” Phone
>FHD Tab
Why Adaptive Charging be Needed
- Bigger Battery
- Longer charging
Customer Pain :
Long charging time
Customer’s Need :
To well charge a 3000mAh battery in 1 HOUR around

4. Conventional USB Charging
How to Solve The Pain
Generally, output voltage increasing for higher power delivery is better
Therefore QCOM proposes QC2.0 for the pain and Mediatek proposes PumpExpress
Briefing QC2.0 :
Up to 60W (5V/9V/12V/20V) over standard micro-USB hardware
Uses existing USB BC1.2 cables/ connectors
Backwards compatible with 5V USB BC1.2
QC2.0’s Target :
To full charge a 3300mAh battery in ONE hour around
Conventional USB Charging
Quick Charging

5. FSC CHARGER SOLUTION OUTLOOK

6. FCS’s TA Solution Line Up
Product Line
Line Up
Description
Content
PSR+SSR
FAN302HL
FAN302UL
HL : 85KHz DCM & UL : 140KHz DCM
Fixed Frequency
SOP8
< 10mW standby power loss
CV dynamic > 4.85V
VSOVP latch to secure Vo<6V
FAN501
Fixed frequency
CCM PWM
MLP4x3_10L & SOP8
Good efficiency
10mW standby power
USUVP for USB cable soft short protection
SD pin for OTP (MLP only)
Adaptive Charger
FAN501A
MLP4x3_10L
<20mW standby power
Cable Compensation
Communication Protocol
FAN6100QMPX : QC2.0
FAN6110MPX : QC2.0 & PumpExpress
TL-431 inside
FAN61x0
CV/CC Control
Fast Charging Protocols
MLP3x4_20L

7. Selection Guide Need #1 : New DOE & CoC requirement
Need #2 : Adaptive Charging #1
FAN302
FAN501 #2
QC2.0
PumpExpress
More ≥10W for middle-end
New DOE&COC required
QC2.0 ready for early adopter
Multi-Protocol for platforms

8. New PWM---FAN501 Major Targets on FAN501 :
CCM operation at high frequency for size reduction
High 85kHz for efficiency & EMI
Low 140kHz for transformer size reduction
85k/140kHz fixed frequency for easier dealing CMN interference to touch panel
CCM operation to boost efficiency
SD for OTP to save external OTP circuit
FAN501MPX : with VSUVP (feasible for 3V UVLO charger design)
FAN501AMPX : without VSUVP (feasible for general 2V UVLO USB charger design)
10mW standby power
MLP4x3 package
MP already

9. Frequency Operation – CV/CC regulation
CV regulation : 85kHz/140kHz Fixed frequency operation & burst mode
140kHz low line allows deep CCM operation to reduce conduction loss
85kHz high line reduces switching loss and better EMI
Fixed frequency to help deal with CMN interference to touch panel
CC regulation : frequency reduction with VO drop
At low line, frequency reduction from 140kHz to 50kHz.
At high line, frequency reduction from 85kHz to 30kHz.

10. VS OVP and Shunt-Down(SD) Protection
VS pin monitors output voltage cycle by cycle through auxiliary winding divider resistor
As VS>2.8V with successive 7 cycles de-bounce time , VS OVP is triggered and controller enters latch mode
Shunt-Down
SD pin flows out one constant current 100µA independent on temperature
Usually NTC thermistor connects to this pin for external over-temperature-protection
While SD pin voltage is less than 1.0V, SD function is triggered and controller enters latch mode

11. Our Adaptive TA Solution
FAN61xxMPX
Precise CV/CC regulation control
Multiple adaptive protocols integrated
FAN6100QMPX : QC2.0
FAN6110MPX : QC2.0 & PumpExpress
10x current sense amplifier to reduce the loss on sensing resistor
Precise cable compensation
UVP for >5V operation
FAN501AMPX
Perfectly working with FAN61xx
mWSaverTM technology for <20mW standby
CCM operation for high efficiency
MLP3x4_20L
FAN61xxMPX
MLP4x3_10L

12. Detail about FSC’s Adaptive
Flexible Vo & Io Design
Variable CC
Fixed CC
Protocols integrated
QCOM QC2.0 (Vo : 5/9/12)
PumpExpress (Vo : 4~5/7/9/12)
FAN6110
QCOM QC2.0
MTK PumpExpress
PumpExpress
QC2.0
FAN6100Q
QCOM QC2.0
Various CC
Fixed CC
Fixed CC
Various CC

13. Precise Cable Compensation
VCOMR = 10 ∙ IO ∙ RCS ∙ RCOMR ∙ KCOMR ∙ (Rf1+Rf2)/Rf2
= 10 ∙ 2A ∙ 50mΩ ∙ 147kΩ ∙ 1uA/V ∙ (41.2kΩ +9.53kΩ)/9.53kΩ = 0.782V
KCOMR is cable compensation design K value

14. UVP to Deal with Soft Short
To deal soft short issue, we can have UVP protection to help out
5V output  3V foldback (Primary)
7V output  5V soft short (Secondary)  3V foldback (Primary)
9V output  7V soft short (Secondary)  3V foldback (Primary)

15. THANK YOU