 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| www..com Application Note Version 1.0, Sept 2006 EVALQRS-ICE2QS01-160W 160W SMPS Evaluation Board with Quasi Resonant Controller ICE2QS01 Power Management & Supply Never stop t h i n k i n g. www..com Edition 2006-12-21 Published by Infineon Technologies Asia Pacific, 168 Kallang Way, 349253 Singapore, Singapore (c) Infineon Technologies AP 2004. All Rights Reserved. Attention please! The information herein is given to describe certain components and shall not be considered as a guarantee of characteristics. Terms of delivery and rights to technical change reserved. We hereby disclaim any and all warranties, including but not limited to warranties of non-infringement, regarding circuits, descriptions and charts stated herein. Information For further information on technology, delivery terms and conditions and prices please contact your nearest Infineon Technologies Office (www.infineon.com). Warnings Due to technical requirements components may contain dangerous substances. For information on the types in question please contact your nearest Infineon Technologies Office. Infineon Technologies Components may only be used in life-support devices or systems with the express written approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system, or to affect the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body, or to support and/or maintain and sustain and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may be endangered. www..com 160W SMPS Evaluation Board with Quasi Resonant Controller ICE2QS01 Revision History: 2006-09-04 1.0 Previous Version: Page Subjects (major changes since last revision) Version 160W SMPS Evaluation Board with New Quasi Resonant Controller : License to Infineon Technologies Asia Pacific Pte Ltd AN-PS0002 Jeoh Meng Kiat MengKiat.Jeoh@infineon.com Liu Jianwei Jian-wei.Liu@infineon.com He Yi Yi.He@infineon.com Luo Junyang Junyang.Luo@infineon.com We Listen to Your Comments Any information within this document that you feel is wrong, unclear or missing at all? Your feedback will help us to continuously improve the quality of this document. Please send your proposal (including a reference to this document) to: AP_Lab_Admin@infineon.com (c) Infineon Technologies, 2006 Sept, 2006 - V1.0 3 www..com 160W SMPS Evaluation Board with Quasi Resonant Controller ICE2QS01 Table of Contents Topics 1 2 3 4 Introduction Evaluation Board Technical Specification Circuit Description 4.1 Mains Input and Rectification 4.2 PWM Control 4.3 Snubber Network 4.4 Minimum Power at Normal Mode 4.5 Output Stage 4.6 Feedback Loop Circuit Operation 5.1 Sta rtup 5.2 Normal Mode Operation 5.3 Standby Mode Operation Protection Features 6.1 IC Supply Overvoltage 6.2 IC Supply Undervoltage 6.3 Mains Undervoltage Protection 6.4 Primary Current Simulation and Pulse by Pulse current Limit 6.5 Fold Back Correction Circuit Diagram PCB Layout 8.1 Top Layer 8.2 Bottom Layer Component List Page 6 6 7 7 5 8 6 8 7 8 9 10 9 11 12 13 10 Transformer Construction 11 Test Report 11.1 Efficiency versus line voltage 11.2 Standby Power in Burst Mode Operation 11.3 Efficiency versus load at 220VAC line voltage 11.4 Switching frequency versus load at line voltage 85VAC (c) Infineon Technologies, 2006 Sept, 2006 - V1.0 4 www..com 160W SMPS Evaluation Board with Quasi Resonant Controller ICE2QS01 12 Test Waveforms 12.1 Startup behaviour 12.2 Switching at different zero crossings 12.3 Burst Mode operation 13 References 15 19 (c) Infineon Technologies, 2006 Sept, 2006 - V1.0 5 www..com 160W SMPS Evaluation Board with Quasi Resonant Controller ICE2QS01 1. Introduction The board described here was designed as a typical power supply in quasi-resonant flyback converter topology with multi output voltage and secondary control. This type of AC/DC power supply is particularly suitable for TV application. The PWM controller ICE2QS01 used for this application is a newly developed IC from the Infineon Technologies's quasi-resonant controller family with enhancements to satisfy the needs for low standby power and protection features. In normal operation, digital frequency reduction technique is used to avoid high frequency caused interference, lower the power consumption, avoid any jitter toward stabilization system and support stable output in this mode. In standby mode, the converter is operated in Active Burst Mode to lower the power consumption and support a stable output voltage with smaller ripple. In this mode, the converter is still in active mode and responses fast to load changes. In case of failure mode like open loop, overvoltage or overload due to short circuit, the device switches in Auto Restart Mode or Latch-off Mode which is controlled by the internal protection unit. By means of the cycle-by-cycle peak current limitation plus foldback correction, the dimension of the transformer and the secondary diode can be lower which leads to more cost effective design. 2. Evaluation Board (c) Infineon Technologies, 2006 Sept, 2006 - V1.0 6 www..com 160W SMPS Evaluation Board with Quasi Resonant Controller ICE2QS01 3. Technical Specification Input voltage Input frequency 85VAC~265VAC 50Hz 120V Output voltage and current 33V 12V Output power Efficiency Minimum switching frequency at full load, lowest line voltage Standby power 160W >80% at full load 40kHz <1W at no load 0.83A 1.5A 0.85A 4. Circuit Description 4.1 Mains Input and Rectification The AC line input side comprises the input fuse FUSE1 as overcurrent protection. The X2 Capacitor CX1, CX2 and Choke L1 and Y1 capacitor CY2 and CY3 form a main filter to minimize the feedback of RFI into the main supply. The bridge rectifier BR1, together with a smoothing capacitor C1, provide a voltage of 80 to 380 VDC depending on the input voltage available. The varistor VAR1 after fuse can absorb the input surge transient voltage and the thermistor RT1 in series with the input can limit the input inrush current during the first plug in of the AC input line. 4.2 PWM Control The PWM pulse is generated by 8 -pin Quasi Resonant Controller ICE2QS01. ICE2QS01 is a current mode controller. The ICE2QS01 comprises the complete control for free running flyback switch mode power supply for TV application.. It also performs all necessary protection functions in flyback converters. The IC functions will be described in the next section. 4.3 Snubber Network A snubber network R1, C and D dissipate the energy of the leakage Inductance and to suppress 2 2 ringing in the SMPS transformer. 4.4 Output Stage There are three secondary output, the 120V (scan voltage for deflection stage), 33V (audio supply), and 12V (small signal supply), The 5V standby supply for microcontroller can be derived from a regulator connected to the 12V output. On the secondary side, the power is coupled out via a group of ultra-fast diodes D4, D3 and D6. The capacitors C8, C7 and C16 provide energy buffering following with the L-C (c) Infineon Technologies, 2006 Sept, 2006 - V1.0 7 www..com 160W SMPS Evaluation Board with Quasi Resonant Controller ICE2QS01 filters to reduce the output ripple and prevent interference between SMPS switching frequency and line frequency considerably. Storage capacitors C8, C7 and C16 are designed to have an internal resistance as small as possible (ESR). This is to minimize the output voltage ripple caused by the triangular current characteristic. 4.5 Feedback Loop For feedback, the output is sensed by the voltage divider of R12, R16 and R17 and compared to TL431 internal reference voltage. The output voltage of TL431 is converted to the current signal via optocoupler for regulation control. 5. Circuit Operation 5.1 Startup Since there is a built-in startup cell in the ICE2QS01, there is no need for external start up resistor. The power cell is connected to the HV pin of the IC. Once the voltage is built up at the HV pin, the power cell will charge up the Vcc capacitor C11. When the Vcc voltage exceeds the IC on-threshold, the IC begins to operate with a soft-start and the power cell is switched off. Then the Vcc voltage is sustained by the auxiliary winding. The soft -start implemented in the ICE2QS01 is a digital time-based function. The pulse width is increased by step every 3 ms. The preset maximum time is 24ms. 5.2 Normal Mode Operation with Digital Frequency Reduction An important characteristic of the ICE2QS01 is its load dependent frequency response for free running switched mode power supplies (SMPS). This internal function reduces the frequency gradually as the load drops, thus allows a high degree of efficiency with light loads. 5.3 Active Burst Mode Operation At very low load condition, the IC enters active burst mode operation to minumize input power and thus to increase efficiency. 6. Protection Features 6.1 IC Supply Overvoltage and Undervoltage If VCC exceeds the VCC over-voltage threshold 25V (overvoltage threshold), IC will stop switching and wait for the Vcc to fall below under-voltage 10.5V (typical). After that, IC will re-start and begin to re-charge the Vcc. If VCC drops to lower than 10.5V (under voltage threshold), IC will stop switching and begin to charge the Vcc. 6.2 Fold Back Correction (c) Infineon Technologies, 2006 Sept, 2006 - V1.0 8 www..com 160W SMPS Evaluation Board with Quasi Resonant Controller ICE2QS01 This function is necessary in free running SMPS to make the maximum output power independent on AC input voltage. By mean of this the dimension of the transformer can be smaller and the rating of secondary diode can be lower, which leads to more cost efficiency. This feature is obtained by reducing the current limit and thus lower power at high main input voltage. 6.3 Openloop/overload protection In case of open control loop after the blanking time, the regulation voltage Vreg is pulled up with internally block. After a blanking time of 24ms, the IC enters auto-restart mode. In case of secondary short-circuit or overload, regulation voltage Vreg will also be pulled up, same protection will be applied and IC will enters auto-start mode. 6.4 Adjustable output overvoltage protection During off-time of the power switch, the voltage at the zero-crossing pin is monitored for output overvoltage detection. If the voltage is higher than the preset threshold for a preset period, the IC is latched off. 6.5 Short-winding protection If the voltage at the current sensing pin is higher than the preset threshold during on-time of the power switch, the IC is latched off. This is short-winding protection. 7 Circuit Diagram CY1 2.2nF/250VAC BR1 6A/400V C1 470uF/400V C2 15nF/630V TR1 1 R1 33k/2W C3 330pF/1kV R2 120/5W L2 20uH 3 4 18 D4 STTA506D D2 UF4006 CY3 2.2nF/250VAC 5 C4 47pF/1KV 17 C6 470pF/1KV L3 20uH 33V/1.5A D3 MUR420 R3 36k 16 D1 UF4002 12 R4 D5 1N4148 C12 7 4,5 HV IC1 6 R6 4.3k 8 Q1 E42/21/15 C14 100pF/1kV R7 100 SPP07N60C3 C15 220pF/50V IC2 SFH617-3 4 3 1 2 R14 1.1k R17 4.3k R11 680 R15 22k R12 180k/0.5W 27 7 11 D6 UF5402 C5 470pF/1KV L4 20uH 12V/0.85A 120V/0.83A FUSE1 AC+ 85~265VAC AC- 4A CX2 CX1 0.33uF/275VAC 0.33uF/275VAC L1 2*3.3mH/4.6A S237/5 RT1 + + VAR1 S10k275 C8 100uF/160V + C9 47uF/160V GND 15 + CY2 2.2nF/250VAC C7 1000uF/50V + C10 470uF/50V Gnd + C16 1000uF/25V + C17 470uF/25V Gnd C11 47uF/50V + 100nF/50V VCC 8 R8 27 R5 11k GND ICE2QS01 REG Z C 1 OUT CS 3 R9 0.15/2W C13 1.5nF/50V 2 R10 0.47/2W C18 100pF/50V 100pF/50V C19 R13 1.2k R16 C20 22k 0.1uF/50V 160W SMPS using ICE2QS01 for CRT-TV IC3 TL431 (c) Infineon Technologies, 2006 Sept, 2006 - V1.0 9 www..com 160W SMPS Evaluation Board with Quasi Resonant Controller ICE2QS01 8 8.1 PCB Layout Top Layer 8.2 Bottom Layer (c) Infineon Technologies, 2006 Sept, 2006 - V1.0 10 www..com 160W SMPS Evaluation Board with Quasi Resonant Controller ICE2QS01 9 Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 Component List Part BR1 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 C16 C17 C18 C19 C20 CX1 CX2 CY1 CY2 CY3 D1 D2 D3 D4 D5 D6 FUSE1 IC2 IC3 L1 L2 L3 L4 Q1 R1 R2 R3 Part Type 6A/400V 470uF/400V 15nF/630V 330pF/1kV 47pF/1KV 470pF/1KV 470pF/1KV 1000uF/50V 100uF/160V 47uF/160V 470uF/50V 47uF/50V 100nF/50V 1.5nF/50V 100pF/1kV 220pF/50V 1000uF/25V 470uF/25V 100pF/50V 100pF/50V 0.1uF/50V 0.33uF/275VAC 0.33uF/275VAC 2.2nF/250VAC 2.2nF/250VAC 2.2nF/250VAC UF4002 UF4006 MUR420 STTA506D 1N4148 UF5402 0.166666667 SFH617-3 TL431 2*3.3mH/4.6A 20uH 20uH 20uH SPP07N60C3 33k/2W 120/5W 36k Number 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 11 (c) Infineon Technologies, 2006 Sept, 2006 - V1.0 www..com 160W SMPS Evaluation Board with Quasi Resonant Controller ICE2QS01 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15 R16 R17 RT1 TR1 VAR1 27 11k 4.3k 100 27 0.15/2W 0.47/2W 680 180k/0.5W 1.2k 1.1k 22k 22k 4.3k S237/5 E42/21/15 S10k275 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 10 Transformer Construction Core size: EE42/21/15 (EPCOS) Core material N87 (Epcos) or BH1(NEC/TOKIN) or PC40 (TDK) Bobbin: EE42/21/15 (18pins) Vertical Version Primary Inductance, Lp=155uH, measured between pin 1 and pin 4 (Gapped to Inductance) (c) Infineon Technologies, 2006 Sept, 2006 - V1.0 12 www..com 160W SMPS Evaluation Board with Quasi Resonant Controller ICE2QS01 11 Test Report 11.1 Efficiency versus line voltage Vin (V) Iin (A) 1.21 2.21 3.57 0.98 1.8 2.85 0.81 1.52 2.37 0.67 1.26 1.98 0.59 1.09 1.69 0.52 0.96 1.47 Pin (W) 56.9 114.7 190.3 56.53 113.2 183.6 56.5 112.4 180.7 56.8 112.4 179.9 57.4 113.4 179.7 58.6 113.2 181.4 Pout (W) 50.034 100.014 161.901 50.022 99.996 161.766 50.022 100.014 161.755 50.031 100.002 162.006 50.028 99.996 161.625 50.028 100.008 161.645 (%) 87.9332 87.1962 85.0767 88.4875 88.3357 88.1081 88.5345 88.9804 89.5157 88.0827 88.9698 90.0531 87.1568 88.1799 89.9415 85.372 88.3463 89.1097 120V (0.83A) Vo1 Io1 119.21 119.23 119.2 119.23 119.2 119.18 119.21 119.2 119.21 119.21 119.21 119.2 119.21 119.21 119.18 119.21 119.21 119.15 0.3 0.6 0.83 0.3 0.6 0.83 0.3 0.6 0.83 0.3 0.6 0.83 0.3 0.6 0.83 0.3 0.6 0.83 33V (1.5A) Vo2 35.1 35.01 34.95 35.04 35.02 34.86 35.03 35.02 34.83 35.09 35.03 34.98 35.07 35.01 34.76 35.06 35 34.79 Io2 0.3 0.6 1.5 0.3 0.6 1.5 0.3 0.6 1.5 0.3 0.6 1.5 0.3 0.6 1.5 0.3 0.6 1.5 12V (0.85A) Vo3 12.47 12.45 12.4 12.47 12.44 12.42 12.5 12.47 12.43 12.47 12.43 12.47 12.48 12.44 12.43 12.49 12.47 12.43 Io3 0.3 0.6 0.85 0.3 0.6 0.85 0.3 0.6 0.85 0.3 0.6 0.85 0.3 0.6 0.85 0.3 0.6 0.85 85 110 140 180 220 265 90.0% Efficiency (%) 88.0% 86.0% 84.0% 82.0% 80.0% 78.0% 85 110 220 265 Full Load Med Load Light Load Line Voltage(VAC) (c) Infineon Technologies, 2006 Sept, 2006 - V1.0 13 www..com 160W SMPS Evaluation Board with Quasi Resonant Controller ICE2QS01 11.2 Vin (V) Standby Power (Burst Mode Operation) Pin (mW) 120V Vo1 119.32 119.31 119.32 119.31 Io1 0.0 0.0 0.0 0.0 Vo2 35.20 35.3 34.8 34.6 33V Io2 0.0 0.0 0.0 0.0 V03min 9.05 9.03 8.63 8.53 12V I03 0.045 0.045 0.045 0.045 85 110 220 265 702 706 798 917 11.3 Efficiency vs. Load at 220VAC input voltage Pin (W) 22.4 31.3 40.7 58.5 76.3 113.4 144 182.7 Vo1 (V) 119.23 119.23 119.21 119.21 119.2 119.18 119.17 119.17 Io1 (A) 0.1 0.15 0.2 0.3 0.4 0.6 0.7 0.83 Vo2 (V) 34.97 34.98 35.05 35.03 35 34.99 34.87 34.79 Io2 (A) 0.1 0.15 0.2 0.3 0.4 0.6 1 1.5 Vo3 (V) 12.56 12.54 12.51 12.48 12.43 12.43 12.43 12.44 Io3 (A) 0.1 0.15 0.2 0.3 0.4 0.6 0.7 0.85 Po (W) 16.676 25.0125 33.354 50.016 66.652 99.96 126.99 161.6701 Efficiency (%) 74.45% 79.91% 81.95% 85.50% 87.36% 88.15% 88.19% 88.49% 90.0% Efficiency 85.0% 80.0% 75.0% 0% 20% 40% 60% 80% 100% Output Power (%) Efficiency versus output power at line voltage 220VAC (c) Infineon Technologies, 2006 Sept, 2006 - V1.0 14 www..com 160W SMPS Evaluation Board with Quasi Resonant Controller ICE2QS01 11.4 Switching frequency versus load at line voltage 85VAC Switching frequency (kHz) 70 65 60 55 50 45 40 35 30 0 20 40 60 80 100 120 140 160 Input Power (W) Switching frequency versus load at line voltage 85VAC 12 condition Test Waveforms 12.1 Startup Behavior of the system with 50W (120V/0.3A, 33V/0.3A and 12V/0.3A) output load Vds VCC Vgate (c) Infineon Technologies, 2006 Sept, 2006 - V1.0 15 www..com 160W SMPS Evaluation Board with Quasi Resonant Controller ICE2QS01 12.2 Switching at different zero crossings Switch at the first zero crossing Vds VZC VCS Switch at the second zero crossing Vds VZC VCS Switch at the third zero crossing Vds VZC VCS (c) Infineon Technologies, 2006 Sept, 2006 - V1.0 16 www..com 160W SMPS Evaluation Board with Quasi Resonant Controller ICE2QS01 Switch at the fourth zero crossing Vds VZC VCS Switch at the fifth zero crossing Vds VZC VCS Switch at the sixth zero crossing Vds VZC VCS (c) Infineon Technologies, 2006 Sept, 2006 - V1.0 17 www..com 160W SMPS Evaluation Board with Quasi Resonant Controller ICE2QS01 Switch at the seventh zero crossing Vds VZC VCS 12.3 Burst Mode Operation Entering active burst mode Vds VCC Vreg Operation in active burst mode Vds VCC Vreg (c) Infineon Technologies, 2006 Sept, 2006 - V1.0 18 www..com 160W SMPS Evaluation Board with Quasi Resonant Controller ICE2QS01 Leaving active burst mode Vds VCC Vreg 13 References [1] Infineon Technologies, "ICE2QS01 Quasi-rensonant PWM controller", Infineon Technologies Datasheet, version 1.0, September 2006. (c) Infineon Technologies, 2006 Sept, 2006 - V1.0 19 |
Price & Availability of ICE2QS01-160W
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |