Datasheet ADUM3070 (Analog Devices) - 9

Data Sheet ADuM3070 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 (Ω)
10437-
LOAD CURRENT (mA)
10437- Figure 4. Switching Frequency (f Figure 7. 5 V In to 5 V Out Efficiency over Temperature with 1:2 Coilcraft SW) vs. ROC Resistance Transformer (JA4631-BL) at 500 kHz fSW
90 90 80 80 70 70 60 60 %) %) ( ( 50 50 NCY NCY E E 40 40 ICI ICI F F F F E E 30 30 20 fSW = 1MHz 20 f 5V IN TO 5V OUT SW = 700kHz 5V IN TO 3.3V OUT 10 f 10 SW = 500kHz 3.3V IN TO 3.3V OUT fSW = 200kHz 0 0
008
0 50 100 150 200 250 300 350 400 450 500
005
0 50 100 150 200 250 300 350 400 450 500 LOAD CURRENT (mA) LOAD CURRENT (mA)
10437- 10437- Figure 5. Typical Efficiency at 5 V In to 5 V Out at Various Switching Figure 8. Single-Supply Efficiency with 1:2 Coilcraft Transformer (JA4631-BL) Frequencies with 1:2 Coilcraft Transformer (JA4631-BL) at 500 kHz fSW
90 80 80 70 70 60 60 %) %) 50 ( ( 50 NCY NCY E 40 E 40 ICI ICI F F F F 30 E 30 E 20 20 fSW = 1MHz fSW = 1MHz fSW = 700kHz fSW = 700kHz 10 f 10 SW = 500kHz fSW = 500kHz fSW = 200kHz fSW = 200kHz 0 0 0 50 100 150 200 250 300 350 400 450 500
006
0 50 100 150 200 250 300
033
LOAD CURRENT (mA)
10437-
LOAD CURRENT (mA)
10437- Figure 6. Typical Efficiency at 5 V In to 5 V Out at Various Switching Figure 9. Typical Efficiency at 3.3 V In to 5 V Out at Various Switching Frequencies with 1:2 Halo Transformer (TGSAD-260V6LF) Frequencies with 1:3 Halo Transformer (TGSAD-290V6LF) Rev. A | 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) 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