Fairchild Reference Design

Transcription

1 Fairchild Reference Design The following reference design supports inclusion of FL7930B, FLS1800XS and FAN7346 in design of LED illumination. It should be used in conjunction with the FL7930B, FLS1800XS and FAN7346 datasheet as well as Fairchild s application notes and technical support team. Please visit Fairchild s website at Application Fairchild Device Input Voltage Range Rated Output Power Output Voltage (Rated Current) LED Illumination FL7930B, FLS1800XS FAN ~ 265 V AC 100 W 100 V (4-CH : 250 ma/ch) (1-CH : 1.0 A) 1. Key Features of Main Controller 1.1. FL7930B Additional OVP Detection Pin Input Voltage Absent Detection Circuit Internal Soft-Start without Overshoot Internal Total Harmonic Distortion (THD) Optimizer Precise Adjustable Output Over-Voltage Protection MOSFET Over-Current Protection 1.2. FLS1800XS Variable Frequency Control with 50% Duty Cycle High Efficiency through Zero Voltage Switching (ZVS) Up to 300 KHz Operating Frequency Auto-Restart Operation for All Protections with External LV CC Protection Functions: Over-Voltage Protection (OVP), Over-Current Protection (OCP), Abnormal Over-Current Protection (AOCP), Internal Thermal Shutdown (TSD) 1.3. FAN7346 Linear Balance Control for 4-Channel LED Arrays Wide input Voltage Range: 10 V to 100 V Precision Current Accuracy Trimmed to 1.5% Support Wide Dimming Ratio: 0.5% ~ 100% Protection Functions: Channel Individual Open-LED Protection (OLP), Channel Individual Short-LED Protection (SLPR), Channel Individual Over-Current Protection (OCP), Thermal Shutdown Function (Auto-Recovery) 2011 Fairchild Semiconductor Corporation 1 RD-L011_FL7930B_FLS1800XS_FAN7346 Rev

2 2. Schematic of the Evaluation Board 2.1 PFC Part D101 R104 R105 R124 R125 R118 TM1 D102 PFC OUT C106 R120 Optional D104 R110 R114 ZNR2 C103 C113 Q105 R121 Q102 C110 R111 R115 LF102 C105 C102 LF101 C101 R103 R102 F1 F F C104 R101 ZNR1 TH1 TH2 D108 C109 C117 J101 D106 D110 R119 C119 C120 R122 D105 C111 U101 V AUX C112 R112 R116 R108 D103 8 VCC GATE 7 Q101 C107 R107 5 ZCD CS 4 3 COMP INV 1 6 GND OVP 2 C118 R109 R106 R113 C122 R117 C121 C108 V ac Figure 1. Schematic for PFC part 2.2 DC-DC Converter and Current Balance Controller Part PFC OUT V AUX C123 TM2 D201 C201 C202 C203 V LED R129 Q104 RS8 R128 R131 R123 R132 C115 R133 D202 CS6 RS10 R130 D107 Q103 U102 LVCC RT VDL D109 HVCC C124 C204 R201 D203 U201 R203 C206 C205 RS11 CS7 Q1 Q2 Q3 Q4 RS29 RS16 CS10 RS23 RS30 CS11 RS31 RS25 CS13 RS32 R136 R135 R134 PC101 C127 C125 C126 C114 R127 AR CS R126 -X S F L S SG s Srie e PG VCTR C116 R202 D204 RS13 CS8 CS9 V LED Fault VCC CMP OVR CH1 OUT1 OUT2 CH2 FB1 REF PWM1 PWM2 PWM3 PWM4 PWM5 RS22 RS18 RS17 RS15 RS14 FB2 VMIN RS12 CH3 FB OUT3 RS19 RS27 FB3 ENA CH4 RS20 RS28 OUT4 SLPR FB4 RS21 RS24 GND VDD ADIM IC1 CS17 RS4 R41 ZDP1 RS5 PC101 RS9 RS7 CS3 U1 CS14 CS15 CS12 CS16 Optional Figure 2. Schematic for DC-DC Converter and Current Balance Part for Multi Output 2011 Fairchild Semiconductor Corporation 2 RD-L011_FL7930B_FLS1800XS_FAN7346 Rev

3 2.3 DC-DC Converter and CC/CV Part PFC OUT R129 V AUX Q104 C123 TM2 D201 C201 C202 C203 V LED RS42 RS44 RS46 RS57 R128 R131 R123 R132 C115 R133 D202 R130 D107 Q103 U102 LV CC VDL D109 HV CC R201 D203 C204 R202 R203 D204 U201 C206 C205 RS35 RS41 CS22 RT C124 DS3 CS19 RS33 R136 R135 R134 PC101 C127 C125 C126 C114 R127 AR CS -X S F L S SG s Srie e PG VCTR C116 RS49 PC101 DS5 U11 CS25 RS56 RS40 RS55 U9 RS59 R126 U11 RS60 Figure 3. Schematic for DC-DC Converter and CC/CV Part for Single Output 2011 Fairchild Semiconductor Corporation 3 RD-L011_FL7930B_FLS1800XS_FAN7346 Rev

4 3 Magnetic Component Specifications 3.1 TM1 Specification for PFC Core : EER3019N (SAMHWA PL-7) Bobbin : 10 pin 10 NauxA 0.3φ / 5T 9 7 EER3019N 1,2 NP 0.1φ * 50 39T NauxB 6 7 NauxA ,2 NauxB 0.3φ / 5T N p 6 3,4 3,4 Figure 4. Transformer Specifications & Construction Table 1. Winding Specifications No. Winding Pin (S F) Wire Turns Winding Method 1 Np 3, 4 1, 2 0.1φ Ts Solenoid Winding 2 Insulation: Polyester Tape t = mm, 3-Layer 3 NauxA φ 5 Ts Solenoid Winding 4 Insulation: Polyester Tape t = mm, 3-Layer 5 NauxB φ 5 Ts Solenoid Winding 6 Insulation: Polyester Tape t = mm, 3-Layer Table 2. Electrical Characteristics Pin Specification Remark Inductance 3, 4 1, µh ±5% 100 KHz, 1 V 2011 Fairchild Semiconductor Corporation 4 RD-L011_FL7930B_FLS1800XS_FAN7346 Rev

5 3.2 TM2 Specification for LLC Resonant Converter Core : EER3543 Bobbin : 16 pin 2.5mm 13mm 12mm EER N s3 N p N s2 N s1 2 N p N s3 N s2 N s1 8 9 Figure 5. Transformer Specifications & Construction Table 3. Winding Specifications No. Winding Pin(S F) Wire Turns Winding Method 1 Np φ Ts Solenoid Winding 2 Insulation: Polyester Tape t = mm, 3-Layer 3 Ns φ 2 Ts Solenoid Winding 4 Insulation: Polyester Tape t = mm, 3-Layer 5 Ns φ Ts Solenoid Winding 6 Insulation: Polyester Tape t = mm, 3-Layer 7 Ns φ Ts Center Solenoid Winding 8 Insulation: Polyester Tape t = mm, 3-Layer Table 4. Electrical Characteristics Pin Specification Remark Primary-Side Inductance (Lp) µh ±5% 100 KHz, 1 V Primary-Side Effective Leakage (LR) µh Max. Short one of the secondary windings 2011 Fairchild Semiconductor Corporation 5 RD-L011_FL7930B_FLS1800XS_FAN7346 Rev

6 4. Electrical Performances 4.1. Overall System Efficiency 4.2. Power Factor Figure 6. System Efficiency Figure 7. Power Factor (PF) Test Result 4.3. Current and Voltage Regulation Performance of Single Output Figure 8. CC/CV Performance 2011 Fairchild Semiconductor Corporation 6 RD-L011_FL7930B_FLS1800XS_FAN7346 Rev

7 4.4. Analog Dimming Performance of FAN7346 Figure 9. Dimming Characteristics Curve (PLED vs. VADIM) 5. Related Resources Datasheet link FL7930B Datasheet link FLS1800XS Datasheet link FAN Fairchild Semiconductor Corporation 7 RD-L011_FL7930B_FLS1800XS_FAN7346 Rev

8 Reference Design Disclaimer Fairchild Semiconductor Corporation ( Fairchild ) provides these reference design services as a benefit to our customers. Fairchild has made a good faith attempt to build for the specifications provided or needed by the customer. Fairchild provides this product as is and without recourse and MAKES NO WARRANTY, EXPRESSED, IMPLIED OR OTHERWISE, INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Customer agrees to do its own testing of any Fairchild reference designs in order to ensure design meets the customer needs. Neither Fairchild nor Customer shall be liable for incidental or consequential damages, including but not limited to, the cost of labor, requalifications, rework charges, delay, lost profits, or loss of goodwill arising out of the sale, installation or use of any Fairchild product. Subject to the limitations herein, Fairchild will defend any suit or proceeding brought against Customer if it is based on a claim that any product furnished hereunder constitutes an infringement of any intellectual property rights. Fairchild must be notified promptly in writing and given full and complete authority, information and assistance (at Fairchild s expense) for defense of the suit. Fairchild will pay damages and costs therein awarded against Customer but shall not be responsible for any compromise made without its consent. In no event shall Fairchild s liability for all damages and costs (including the costs of the defense by Fairchild) exceed the contractual value of the products or services that are the subject of the lawsuit. In providing such defense, or in the event that such product is held to constitute infringement and the use of the product is enjoined, Fairchild, in its discretion, shall procure the right to continue using such product, or modify it so that it becomes noninfringing, or remove it and grant Customer a credit for the depreciated value thereof. Fairchild s indemnity does not extend to claims of infringement arising from Fairchild s compliance with Customer s design, specifications and/or instructions, or the use of any product in combination with other products or in connection with a manufacturing or other process. The foregoing remedy is exclusive and constitutes Fairchild s sole obligation for any claim of intellectual property infringement and Fairchild makes no warranty that products sold hereunder will not infringe any intellectual property rights. All solutions, designs, schematics, drawings, boards or other information provided by Fairchild to Customer are confidential and provided for Customer s own use. Customer may not share any Fairchild materials with other semiconductor suppliers Fairchild Semiconductor Corporation 8 RD-L011_FL7930B_FLS1800XS_FAN7346 Rev