FS6X0420R FAIRCHILD [Fairchild Semiconductor], FS6X0420R Datasheet
FS6X0420R
Related parts for FS6X0420R
FS6X0420R Summary of contents
Page 1
... X : Tape & Reel FPS is a trademark of Fairchild Semiconductor Corporation TM ©2006 Fairchild Semiconductor Corporation FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1 Description The FS6X-Series is specially designed for off-line DC-DC con- verters with minimal external components. This device com- bines a current mode PWM controller with a high voltage power SenseFET in a single package ...
Page 2
... Sense ref I I delay OVP TSD Line UVLO Figure 2. Functional Block Diagram of FS6X-Series FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1 Drain PWM L/S Vfb Vcc GND Figure 1. Typical Flyback Application V Good Line CC UVLO Enable Vref OSC S Q 28R ...
Page 3
... GND 3 Vcc Feedback 4 (FB) 5 N.C. 6 Line Sense (LS) FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1 D2-PAK-6L 6. Line Sense 5. N.C. 4. Vfb 3. Vcc 2. GND 1. Drain Figure 3. Pin Configuration (Top View) Pin Function Description This pin is the high voltage power SenseFET drain connection. This pin is the control ground and the SenseFET source. ...
Page 4
... Operating Ambient Temperature Storage Temperature Range Note: 1. Repetitive rating: Pulse width limited by maximum junction temperature. Thermal Impedance Parameter Junction-to-Ambient Thermal (1) Junction-to-Case Thermal Note: 1. Infinite cooling condition - Refer to the SEMI G30-88. FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0 Symbol V DSS FS6X0420RJ I FS6X0720RJ DM FS6X1220RJ ...
Page 5
... Shutdown Feedback Voltage Shutdown Delay Current Notes: 1. Pulse test: Pulse width ≤ 300μS, duty ≤ 2%. 2. These parameters, although guaranteed at the design, are not tested in mass production. 3. These parameters indicate the inductor current. FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1 Symbol Condition 0V, I ...
Page 6
... Parameter TOTAL DEVICE SECTION (1) Startup Current Sleep Mode Current (1) Operating Supply Current Line UVLO Threshold Voltage Sleep On/Off Threshold Voltage Notes: 1. This parameter is the current flowing into the control IC. FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1 Symbol Condition GND 14V start 1V, V ...
Page 7
... Temp [℃] Figure 5. Stop Threshold voltage vs. Temp [%] 81.0 80.5 80.0 79.5 79.0 - Temp [℃] Figure 6. Maximum Duty vs. Temp FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1 [V] 16.0 15.5 15.0 14.5 14.0 75 100 125 150 Figure 7. Start Threshold Voltage vs. Temp [KHz] 305.0 303.0 301.0 299.0 297.0 295.0 75 100 125 150 Figure 8. Operating Frequency vs. Temp [mA] 1 ...
Page 8
... Temp [℃] Figure 11. Over Voltage Protection vs. Temp [uA - Temp [℃] Figure 12. Start Up Current vs. Temp FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1 [uA] 5.3 5.2 5.1 5.0 4.9 4.8 4.7 75 100 125 150 Figure 13. Shutdown Delay Current vs. Temp [V] 2.7 2.6 2.5 2.4 2.3 75 100 125 150 Figure 14. LineUVLO threshold Voltage [A] 3 ...
Page 9
... V SD Figure 17. Pulse Width Modulation (PWM) Cir- cuit FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1 3. Protection Circuit Besides pulse-by-pulse current limit, the FS6X-Series has the following self protection functions: over load protection (OLP), over voltage protection (OVP), and thermal shutdown (TSD). Because these protection circuits are fully integrated into the IC without external components, the reliability is improved ...
Page 10
... FS6X-Series uses Vcc instead of directly monitoring the output voltage. If VCC exceeds 25V, OVP circuit is activated resulting in termination of FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1 switching. To avoid undesired activation of OVP during normal operation, Vcc should be properly designed to be below 25V. ...
Page 11
... C102 22uF 50V 6 L/S C104 R105 15k Ω 1nF 5 N.C 2 GND IC101 FS6X1220R FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1 Input voltage 15W 36-72Vdc R221 R222 R223 C301 15Ω 15Ω 15Ω 2.2nF R301 1kV 10Ω EPC19 D102 R104 1N4148 1Ω ...
Page 12
... Insulation: Polyester Tape t = 0.050mm, 2Layers 9 → 3 Nvcc Insulation: Polyester Tape t = 0.050mm, 2Layers 4. Electrical Characteristics Parameter Inductance Leakage Inductance 5. Core & Bobbin Core: EPC19 Bobbin: EPC19 Ae(mm2): 22.7 FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1 N p/1 Figure 22. Transformer Schematic Diagram Wire Turns φ × 1 0.35 25 φ × 3 ...
Page 13
... R214 18K R221 15K R222 15K R223 15K R301 10K - - Diode D102 1N4148 D103 P6KE160CA D201 STPS15L25G - - Inductor L201 2.2uH - - FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1 Note Part Value 1/4W C101 47uF/100V 1/4W C102 22uF/50V 1/4W C103 22uF/50V 1/4W C104 1nF/50V 1/4W C201 10uF/25V 1/4W C202 10F/25V 1/4W C203 10F/25V 1/4W ...
Page 14
... Mechanical Dimensions D2-Pak-6L FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1 14 Unit: mm www.fairchildsemi.com ...
Page 15
... PRODUCT STATUS DEFINITIONS Definition of Terms Datasheet Identification Advance Information Preliminary No Identification Needed Obsolete FS6X0420RJ/ FS6X0720RJ/ FS6X1220RJ Rev. 1.0.1 PowerSaver™ ISOPLANAR™ PowerTrench ® LittleFET™ QFET ® MICROCOUPLER™ QS™ MicroFET™ QT Optoelectronics™ ...