Datasheet ADUM4070 (Analog Devices) - 10

ADuM4070 Data Sheet 70 90 80 60 70 50 60 %) %) ( ( 40 50 NCY NCY E E ICI 30 40 ICI F F F F E E 30 20 20 TA = –40°C TA = –40°C 10 TA = +25°C 10 TA = +25°C TA = +105°C TA = +105°C 0 0
010
0 25 50 75 100 125 150 175 200 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140
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LOAD CURRENT (mA)
10461-
LOAD CURRENT (mA)
10461- Figure 10. Typical Efficiency over Temperature with 1:3 Coilcraft Transformer Figure 13. Typical Efficiency over Temperature with 1:3 Coilcraft Transformer (CR7984-CL), fSW = 500 kHz, 3.3 V Input to 5 V Output (CR7984-CL), fSW = 500 kHz, 5 V Input to 15 V Output
90 80 80 70 70 60 60 %) %) 50 ( ( 50 NCY NCY 40 E E 40 ICI ICI F F F F 30 E 30 E 20 20 fSW = 1MHz fSW = 700kHz 10 f 10 5V INPUT TO 12V OUTPUT SW = 500kHz f 5V INPUT TO 15V OUTPUT SW = 200kHz 0 0 0 140
011
10 20 30 40 50 60 70 80 90 100 110 120 130 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70
014
LOAD CURRENT (mA)
10461-
LOAD CURRENT (mA)
10461- Figure 11. Typical Efficiency at Various Switching Frequencies with Figure 14. Double-Supply Efficiency with 1:5 Coilcraft Transformer 1:3 Coilcraft Transformer (CR7984-CL), 5 V Input to 15 V Output (CR7985-CL), fSW = 500 kHz
90 80 70 60 %) ( 50 NCY E 40 ICI F F E 30 20 fSW = 1MHz fSW = 700kHz 10 fSW = 500kHz fSW = 200kHz 0 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140
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LOAD CURRENT (mA)
10461- Figure 12. Typical Efficiency at Various Switching Frequencies with 1:3 Halo Transformer (TGSAD-590V8LF), 5 V Input to 15 V Output Rev. 0 | Page 10 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