Datasheet ADUM4070 (Analog Devices) - 9

Data Sheet ADuM4070 TYPICAL PERFORMANCE CHARACTERISTICS 1500 90 1400 80 1300 1200 70 1100 1000 60 %) 900 ) ( 50 800 kHz NCY ( 700 E 40 f SW ICI 600 F F 500 E 30 400 20 300 TA = –40°C 200 10 TA = +25°C 100 TA = +105°C 0 0 0 50 100 150 200 250 300 350 400 450 500
004
0 50 100 150 200 250 300 350 400 450 500
007
ROC (kΩ) LOAD CURRENT (mA)
10461- 10461- Figure 4. Switching Frequency (fSW) vs. ROC Resistance Figure 7. Typical Efficiency over Temperature with 1:2 Coilcraft Transformer (CR7983-CL), fSW = 500 kHz, 5 V Input to 5 V Output
90 90 80 80 70 70 60 60 %) %) ( ( 50 50 NCY NCY E E 40 ICI 40 ICI F F F F E 30 E 30 20 fSW = 1MHz 20 fSW = 700kHz 5V INPUT TO 5V OUTPUT 10 f 5V INPUT TO 3.3V OUTPUT SW = 500kHz 10 f 3.3V INPUT TO 3.3V OUTPUT SW = 200kHz 0 0 0 50 100 150 200 250 300 350 400 450 500
005
0 50 100 150 200 250 300 350 400 450 500
008
LOAD CURRENT (mA)
10461-
LOAD CURRENT (mA)
10461- Figure 5. Typical Efficiency at Various Switching Frequencies with Figure 8. Single-Supply Efficiency with 1:2 Coilcraft Transformer 1:2 Coilcraft Transformer (CR7983-CL), 5 V Input to 5 V Output (CR7983-CL), fSW = 500 kHz
90 70 80 60 70 50 60 %) %) ( ( 50 40 NCY NCY E E 40 ICI ICI 30 F F F F E 30 E 20 20 fSW = 1MHz fSW = 1MHz fSW = 700kHz f 10 SW = 700kHz 10 fSW = 500kHz fSW = 500kHz fSW = 200kHz fSW = 200kHz 0 0 0 50 100 150 200 250 300 350 400 450 500
006 009
0 50 100 150 200 LOAD CURRENT (mA)
10461-
LOAD CURRENT (mA)
10461- Figure 6. Typical Efficiency at Various Switching Frequencies with Figure 9. Typical Efficiency at Various Switching Frequencies with 1:2 Halo Transformer (TGSAD-560V8LF), 5 V Input to 5 V Output 1:3 Coilcraft Transformer (CR7984-CL), 3.3 V Input to 5 V Output Rev. 0 | Page 9 of 20 Document Outline Features Applications Functional Block Diagram General Description Table of Contents Revision History Specifications Electrical Characteristics—5 V Primary Input Supply/5 V Secondary Isolated Supply Electrical Characteristics—3.3 V Primary Input Supply/3.3 V Secondary Isolated Supply Electrical Characteristics—5 V Primary Input Supply/3.3 V Secondary Isolated Supply Electrical Characteristics—5 V Primary Input Supply/15 V Secondary Isolated Supply Package Characteristics Regulatory Approvals (Pending) Insulation and Safety-Related Specifications DIN V VDE V 0884-10 (VDE V 0884-10):2006-12 Insulation Characteristics Recommended Operating Conditions Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Applications Information Application Schematics Transformer Design Transformer Turns Ratio Transformer ET Constant Transformer Primary Inductance and Resistance Transformer Isolation Voltage Switching Frequency Transient Response Component Selection Printed Circuit Board (PCB) Layout Thermal Analysis Power Consumption Power Considerations Soft Start Mode and Current-Limit Protection Insulation Lifetime Outline Dimensions Ordering Guide