A 45 W Adaptor with NCP1339 Quasi
Contents
1. 303 675 2175 or 800 344 3860 Toll Free USA Canada Phone 421 33 790 2910 A i Fax 303 675 2176 or 800 344 3867 Toll Free USA Canada Japan Customer Focus Center For additional information please contact your local Email orderlit onsemi com Phone 81 3 5817 1050 Sales Representative EVBUM2248 D2. Instead the circuit stops pulsing when the FB voltage drops below 400 mV and recovers operation when Vpp exceeds 450 mV 50 mV hysteresis Figure 13 shows controller operation in this skip mode Figure 13 Skip Cycle Mode in Light Load 1 W 115 V rms Power Savings Mode PSM If application requires ultra low input power consumption in stand by NCP1339 controller embedded a dedicated input through REM pin to reduce the consumption to few mW The controller enters in PSM mode as soon as the RME pin is pulled up above a certain level At this time the controller enters in sleep mode and output voltage is not regulated anymore The off time duration is defined by Cog Rs3 and Rs4 REM pin voltage slowly decreasing and it drops below 1 5 V the controller automatically restarts to charge up Cog above 8 V through auxiliary winding and enters in new off sequence 4 min 30 s in our example Figure 14 When the REM is actively pulled down via a dedicated optocoupler the adapter immediately re starts as described in Figure 15 http onsemi com NCP1339GEVB 4 5 min self relaxation Figure 14 Power Savings Mode 4 5 min self relaxation REM pin is actively grounded by secondary side through dedicated optocoupler IC6 i Figure 15 PSM Wake up with Secondary Side Signal through Dedicated Optocoupler Brown out protection rising 93 V falling typically Figure 16 shows typically The NCP1339 controller embedded
3. Vourlt AC coupled X 100mV div Figure 19 Step Load Response between 10 to 100 230 V rms http onsemi com 9 NCP1339GEVB Table 3 BILL OF MATERIAL BOM KITA Vue Tolerance Manufacturer e 14 X2 capacitor 305 V 330 nF 305 V EPCOS mmm X2 capacitor 305 V 220 nF 305 V EPCOS Electrolytic capacitor 400 V capacitor Electrolytic capacitor 400 V V 120 uF RUBYCON C5 C6 C9 Ceramic Capacitor SMD 50 V mom 10 50 V C13 Ceramic capacitor SMD 50V Ceramic capacitor SMD 50V SMD 50 V 22 pF 10 50 V Standard C10 C14 ai Ceramic Capacitor SMD 50 V 220 pF 10 50 V C18 ORO ee Ceramic capacitor SMD 50V Ceramic capacitor SMD 50V SMD 50 V Standard D1 D2 ap Diode Axial 1A 1000V MRA4007 1 A 1000 V Semiconductor SMA D3 D4 D9 ee Diode SMD 100 V D1N4148 100 V 18VZenerDiode Axial Diode Axial 18 V DO 35 Standard D7 Fast sme a Diode Axial 1 A 600 V D1N4937 1 A 600 V Semiconductor DO 35 Diode Axial 200 mA 250V BAV21 200 mA Standard 250 V DO 35 Schottky Diode TO 220 20 A 150 V MBR20H150 20A 150 V ON Semiconductor TO 220 HS1 HS2 Heatsink 13 C W For M1 8 D12 a 13 C W AAVID THERMALLOY HSC1 HSC2 Heatsink clip for TO 220 For M1 8 D12 b ee AAVID THERMALLOY Diode Bridge 4 A 800 V KBU4K aw MULTICOMP IC4 IC6 Optocoupler SFH6156 2 SMD SFH6156 2 nu VISHAY Shunt Regulator 2 5 36 V 1 100 mA NCP431 nu ON
4. Semiconductor Input Connector 2 5 A 260 V EEEE 2 5 A 260 V MULTICOMP s rego ra Differential Mode Choke 300 uH 2A 300uH WURTH Radial Coil 2 2 uH 6 A 20 6A 20 WURTH MOSFET 600 V 7 A IPP60R385 7 A 600 V INFINEON PNP transistor SMD BC857 jE ON Semiconductor Ri R2 Resistor Axial 3 W 5 18 kQ 3 W 5 http onsemi com 10 NCP1339GEVB Table 3 BILL OF MATERIAL BOM rea Oly Dose vewe alanes Wanted C e ELE A sm seo mm e emo soosusv m Sadao e o cries so ozs wey owa om sas R10 Ceramic Resistor SMD 0 25 W 50 V 20 kQ 5 Standard Ceramic Resistor SMD 0 25 W 50 V 300 kQ 5 Standard Tr Ceramic Resistor SMD 0 25 W 50 V 1 5 ko Standard NTC 100 kQ at 25 C Beta 4190 100 k2 VISHAY 25 C R14 R21 k i Ceramic Resistor SMD 0 25 W 50 V e Standard R40 NE Zi Ceramic Resistor SMD 0 25 W 50V Resistor SMD 0 25 W 50 V Standard Mt nam Ta mano 2 cemo smD 025W 50v ora Sanda SO ZO Ceramic Resistor SMD 0 25W 50V Resistor SMD 0 25 W 50 V Standard R27 R42 I a Ceramic Resistor SMD 0 25 W 50 V mz u R52 Ceramic Resistor SMD 0 25 W 50V Resistor SMD 0 25 W 50 V 2 2 MQ Standard oa Resistor SMD 0 25 W 50 V 8 2 MQ 5 Conclusion Thanks to the high voltage current source and X2 This application note has described the results obtained capacitor discharge embedded on controller stand by for 45 W Qua
5. NCP1339GEVB Product Prevlew A 45 W Adaptor with NCP1339 Quasi Resonant Controller Evaluation Board User s Manual Introduction The NCP1339 is a highly integrated quasi resonant flyback controller capable of controlling rugged and high performance off line power supplies as required by adapter applications With an integrated active X cap discharge feature and power savings mode the NCP1339 can enable no load power consumption below 10 mW for 65 W notebook adapters The guasi resonant current mode flyback stage features a proprietary valley lockout circuitry ensuring stable valley switching This system works down to the 6 valley and toggles to a frequency foldback mode to eliminate switching losses When the loop tends to force below 25 kHz frequencies the NCP1339 skips cycles to contain the power delivery To help build rugged converters the controller features several key protective features an internal brown out a non dissipative Over Power Protection for a constant ON Semiconductor http onsemi com EVAL BOARD USER S MANUAL maximum output current regardless of the input voltage a latching off over voltage protection through a dedicated pin This application note focuses on the experimental results of a 45 W adaptor driven by the NCP1339 Table 1 EVALUATION BOARD SPECIFICATION Maximum input voltage 265 V rms Description of the Board The 45 W adapter has been designed using the method descri
6. bed in the application note AND9176 D and also Mathcad file This document contains information on a product under development ON Semiconductor reserves the right to change or discontinue this product without notice Semiconductor Components Industries LLC 2014 July 2014 Rev PO Publication Order Number EVBUM2248 D SWI A 92 S8 NCP1339GEVB BOARD SCHEMATIC LF HO NOSZ Ve cry Ld 290 Jeo I dei UZ Z LEbdON eo gt OLN LO NA my Z 9S19HAS SH R i Bb LOSW 4uoee apolgojdo O ed 29 991 T 0 XA N 69 wol 3 BbIbaSWIN ae va p 8hLFASNW Gi g I 6d esegojdO esegoido UL 2 9G19H1S Sty ka Ol dog S8eH09vd z KI Lp A x991 jei 90 LW ZIH gt a 3 ve HWOL UL 2 cl apoigoidg o f vol u 19 NZ b ZOO YHIN duozz EI c 8H za 0 FI mu s NZ 820 J6EELdON ZE6PNI 7 II y0z Moog i OOPYHW ga OLH LLH La ASE Z N EEE OO u dno89 ZEGPNI HO WZZ w 610 TITE za ZSH K SH nas F gt Cho Le Vve A6L OSLHOZHAW 5 ota PN NBL ZLO Ga a dozz 022 OL 0 DL MOA 819 i HVATA ALe gH gu vH Lv nozi ozH vo cal al ija GL zu LH Mo Aue pu JOJONPUOIIUIIS NO M Sv A 64 peog uonenjeA1 GEELAIN ion Board Schematic Evaluat 1 igure F lonsemi com http NCP1339GEVB MC CAUTION HOT PART O x F gt SE z
7. e 3 Figure 3 Evaluation Board Picture Bottom View Blliclency Resulis Table 2 EFFICIENCY E 115 V RMS AND 230 V RMS All measurements have been done after a 30 min burn out phase at full load and an additional 10 min at the load under ed M td consideration g out out W in W o The input power was measured with the power meter 115 V rms 88 08 66202 from Chroma 75 33 88 38 51 88 00 The output voltage and output current were measured so using digital multimeter embedded on dc electronic load 66103 from Chroma A sia see eo oea m neo peso naa EE The average efficiency was calculated from the efficiency measurements at 25 50 75 and 100 of the nominal output power http onsemi com 3 NCP1339GEVB Efficiency 89 0 88 0 4 87 0 86 0 85 0 84 0 83 0 7 82 0 r T 0 20 40 230 V rms ese 115 V rms 60 80 100 Figure 4 Efficiency vs Output Power of max at 115 V rms and 230 V rms TYPICAL WAVEFORMS Valley Lockout The valley lockout technique makes controller changes valley from the 15 to the 6 valley as the load decreases without any valley jumping This allows extending the quasi resonance QR operation range The following scope shoots show the operating valley as the load decreases for an input voltage of 115 Vrms Figure 5 QR 1 Valley Operation 45 W 115 V rm
8. hnical experts SCILLC does not convey any license under its patent rights nor the rights of others SCILLC products are not designed intended or authorized for use as components in systems intended for surgical implant into the body or other applications intended to support or sustain life or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application Buyer shall indemnify and hold SCILLC and its officers employees subsidiaries affiliates and distributors harmless against all claims costs damages and expenses and reasonable attorney fees arising out of directly or indirectly any claim of personal injury or death associated with such unintended or unauthorized use even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part SCILLC is an Equal Opportunity Affirmative Action Employer This literature is subject to all applicable copyright laws and is not for resale in any manner PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT N American Technical Support 800 282 9855 Toll Free ON Semiconductor Website www onsemi com Literature Distribution Center for ON Semiconductor USA Canada P O Box 5163 Denver Colorado 80217 USA Europe Middle East and Africa Technical Support Order Literature http www onsemi com orderlit Phone
9. s http onsemi com 4 NCP1339GEVB GI DCIH F FLT DCI 50 0 Viiv 150 00 V Figure 6 2 Valley Operation 35 W 115 Vrms PLT OCIM 2 00 VIIN 4 00000 V Figure 7 3 d Valley Operation 25 W 115 V rms Figure 8 4 Valley Operation 20 W 115 Vrms http onsemi com 5 NCP1339GEVB Figure 9 5 Valley Operation 15 W 115 Vrms Figure 10 6 Valley Operation 10 W 115 V rms Frequency Foldback Mode switching frequency fsy reduces if the power demand If while operating at valley 6 the load further decreases diminishes the NCP1339 will operate in Frequency Foldback FF In this 45 W evaluation boards at 115 V rms the mode Practically the circuit enters in FF mode when FB switching frequency is around 48 5 kHz 7 W and falls to voltage drops below 0 8 V The current is frozen to 25 of 27 6 kHz for an output power of 4 W its maximum value and regulation is made by varying the Figure 11 FF Mode 7 W 115 V rms http onsemi com 6 NCP1339GEVB Figure 12 FF Mode 4 W 115 V rms 25 kHz Frequency Clamp and Skip Mode The circuit prevents the switching frequency from dropping below 25 kHz in order to avoid acoustic noise When the switching cycle 1s longer than 40 us the circuit forces a new switching cycle Since the NCP1339 forces a minimum peak current and a minimum frequency 25 kHz typically the power delivery cannot be continuously controlled down to zero
10. si resonant flyback topology with NCP1339 power consumption was measured below 45 mW This controller stand by consumption can be further reduced by activating Due to the valley lockout the NCP1339 allows building power Savings mode QR adapter without valley jumping The controller offers all necessary protections needed to safe power supply ON Semiconductor and the W are registered trademarks of Semiconductor Components Industries LLC SCILLC or its subsidiaries in the United States and or other countries SCILLC owns the rights to a number of patents trademarks copyrights trade secrets and other intellectual property A listing of SCILLC s product patent coverage may be accessed at www onsemi com site pdf Patent Marking pdf SCILLC reserves the right to make changes without further notice to any products herein SCILLC makes no warranty representation or guarantee regarding the suitability of its products for any particular purpose nor does SCILLC assume any liability arising out of the application or use of any product or circuit and specifically disclaims any and all liability including without limitation special consequential or incidental damages Typical parameters which may be provided in SCILLC data sheets and or specifications can and do vary in different applications and actual performance may vary over time All operating parameters including Typicals must be validated for each customer application by customer s tec
11. the Brown out BO signals during line dropout test function via HV pin The BO thresholds are fixed 101 V line Figure 16 Line Drop out Test X2 discharge its terminals below a sufficient pace when you unplug the All PSU need input filter to reduce EMI emission X2 power cord so that the available level becomes benign for a capacitor helps in this task but when you unplug the adaptor user touching the plug after 1 s This is the reason why the voltage on ac terminals can stays to the input peak discharge resistors are connected in parallel with the voltage IEC 950 standard impose to reduce the voltage on filtering capacitor http onsemi com 8 NCP1339GEVB In order to save the power dissipation in the X2 capacitor the controller A dedicated X2 pin senses the input voltage discharge resistance and so increase the general board to detect when the mains disappears typically when the PSU efficiency X2 discharge function is directly implemented on is un plugged Figure 17 X2 Capacitor Discharge Function Transient load The step load response is 220 mV or 1 2 of the output Figure 18 and Figure 19 show an output transient load step voltage from 10 to 100 of the maximum output power at low line and high line The slew rate is 1 A us and the frequency is 20 Hz s 1001 f Vouy t AC coupled 200mV div Figure 18 Step Load Response between 10 to 100 115 V rms hy i i u iMa ik SOWY roca je ie
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