Datasheet FL7930B, FLS2100XS, FAN7346 Datasheet (Fairchild)

www.fairchildsemi.com

Fairchild Reference Design

The following reference design supports inclusion of FL7930B, FLS1800XS and FAN734 6 in design of LED illumination. It should be used in conjunction with the FL7930B, FLS1800 XS and FAN7346 datasheet as well as Fairchild’s application notes and technical support team. Please visit Fairchild’s website at www.fairchildsemi.com.

Application Fairchild Device Input Voltage

Range

LED Illumination FL7930B,

90 ~ 265V

AC

FLS1800XS

FAN7346

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 thro ugh

Zero Voltage Switching (ZVS)

 Up to 300 KHz Operating Frequency  Auto-Restart Operation for All Protections with External LV  Protection Functions: Over-Voltage Protection (OVP), Over-Current

Protection (OCP), Abnormal Over-Current Protection (AOCP), Internal Thermal Shutdown (TSD)

Rated Output

Power

100W

Output Voltage

(Rated Current)

100V

(4-CH : 250mA/CH)

(1-CH : 1.0A)

CC

1.3. FAN7346

 Linear Balance Control for 4-Channel LED Arrays  Wide input Voltage Range: 10V to 100V  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)

www.fairchildsemi.com

2. Schematic of the Evaluation Board

2.1 PFC Part

Figure 1. Schematic for PFC part

2.2 DC-DC Converter and Current Balance Controller Part

Figure 2. Schematic for DC-DC Converter and Current Balance Part for Multi Output

www.fairchildsemi.com

2.3 DC-DC Converter and CC/CV Part

PFC OUT

R129

R128

R130

R136 R135 R134

PC101

V

AUX

R123

R131 R132

D107

C126

C114

C127

C125

R127

Q104

Q103

U102

RT

AR

CS

R126

C115

SG

LV

U9

V

LED

RS57

CS22

RS59

RS60

C202 C203

R202

RS49

C201

PC101

R203

D204

DS3

DS5

U201

U11

C205C206

CS19 RS33

RS42 RS44 RS46

RS35 RS41

RS40

RS55RS56CS25

TM2

C116

D201

D202

R201

D203

C204

C123

R133

D109

VDL

CC

Series

FLS-XS

HV

CC

C124

VCTR

PG

Figure 3. Schematic for DC-DC Converter and CC/CV part for Single Output

www.fairchildsemi.com

3. Magnetic Component Specifications

3.1 TM1 Specification for PFC

9 Core : EER3019N (SAMHWA PL-7) 9 Bobbin : 10pin

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×50 39 Ts Solenoid winding 2 Insulation : Polyester Tape t = 0.025mm, 3Layers 3 NauxA 10 → 9 0.3φ 5 Ts Solenoid winding 4 Insulation : Polyester Tape t = 0.025mm, 3Layers

5 NauxB 6→ 7 0.3φ 5Ts Solenoid winding

6 Insulation : Polyester Tape t = 0.025mm, 3Layers

Table 2.

Pin Spec. Remark

Inductanc

e

3,4 → 1,2 280uH ±5% 100KHz, 1V

Electrical Characteristics.

www.fairchildsemi.com

3.2 TM2 Specification for LLC R esonant Converter

9

Core : EER3543

9 Bobbin : 16pin

Figure 5. Transformer specifications & construction.

Table 3. Winding specifications.

No Winding Pin(S → F) Wire Turns Winding Method

1 Np 8 → 2 0.1φ×20 38Ts Solenoid winding 2 Insulation : Polyester Tape t = 0.025mm, 3Layers 3 Ns1 10 → 9 0.3φ 2 Ts Solenoid winding 4 Insulation : Polyester Tape t = 0.025mm, 3Layers

5 Ns2 13→ 11 0.1φ×20 17 Ts Solenoid winding

6 Insulation : Polyester Tape t = 0.025mm, 3Layers 7 Ns3 16→ 14 0.1φ×10 17Ts Center Solenoid winding 8 Insulation : Polyester Tape t = 0.025mm, 3Layers

Table 4.

Pin Spec. Remark

Primary-Side Inductance (Lp) 2 – 8 850uH ±5% 100KHz, 1V

Primary-Side Effective Leakage

(LR)

2 – 8 170uH Max

Electrical Characteristics.

Short one of the secondary

windings

www.fairchildsemi.com

4. Electrical Performances

4.1 Overall System Efficiency

Figure 6. System Efficiency

4.2 Power Factor

Figure 7. Power Factor (PF) Test Result

4.3 C urrent and Voltage Regulation Performance of Single Output

Figure 8. CC/CV Performance

www.fairchildsemi.com

4.4 Analog Dimming Performance of FAN7346

Figure 9. Dimming Characteristics Curve (PLED vs. VADI M)

4. Related Resources

Datasheet link FL7930B

Datasheet link FLS1800XS

Datasheet link FAN7346

http://www.fairchildsemi.com/referencedesign/

www.fairchildsemi.com

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.