Datasheet ADUM4070 (Analog Devices) - 4

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ADuM4070 Data Sheet ELECTRICAL CHARACTERISTICS—5 V PRIMARY INPUT SUPPLY/3.3 V SECONDARY ISOLATED SUPPLY
4.5 V ≤ VDD1 = VDDA ≤ 5.5 V, VDD2 = VREG = VISO = 3.3 V, fSW = 500 kHz, al voltages are relative to their respective grounds (see the application schematic in Figure 31). Al minimum/maximum specifications apply over the entire recommended operating range, unless otherwise noted. All typical specifications are at TA = 25°C, VDD1 = VDDA = 5.0 V, VDD2 = VREG = VISO = 3.3 V.
Table 3. DC-to-DC Converter Static Specifications Parameter Symbol Min Typ Max Unit Test Conditions/Comments
DC-TO-DC CONVERTER SUPPLY Isolated Output Voltage V 3.0 3.3 3.63 V I = 0 mA, V = V × (R1 + R2)/R2 ISO ISO ISO FB Feedback Voltage Setpoint V 1.15 1.25 1.37 V I = 0 mA FB ISO Line Regulation1 V 1 10 mV/V I = 50 mA, V = V = 4.5 V to 5.5 V ISO (LINE) ISO DD1 DDA Load Regulation V 1 2 % I = 50 mA to 200 mA ISO (LOAD) ISO Output Ripple V 50 mV p-p 20 MHz bandwidth, C = 0.1 µF||47 µF, ISO (RIP) OUT I = 100 mA ISO Output Noise V 100 mV p-p 20 MHz bandwidth, C = 0.1 µF||47 µF, ISO (NOISE) OUT I = 100 mA ISO Switching Frequency f 1000 kHz R = 50 kΩ SW OC 200 kHz R = 270 kΩ OC 209 318 515 kHz V = V (open loop) OC DD2 I Quiescent Current I 3.5 5 mA DDA DDA (Q) Switch On Resistance R 0.5 Ω ON Maximum Output Supply Current I 400 500 mA f ≤ 1 MHz, V = 3.3 V ISO (MAX) SW ISO Efficiency at Maximum Output 70 % I = I , f ≤ 1 MHz ISO ISO (MAX) SW Current 1 VDD1 is the power supply for the push-pull transformer; VDDA is the power supply for Side 1 of the ADuM4070.
ELECTRICAL CHARACTERISTICS—5 V PRIMARY INPUT SUPPLY/15 V SECONDARY ISOLATED SUPPLY
4.5 V ≤ VDD1 = VDDA ≤ 5.5 V, VREG = VISO = 15 V, VDD2 = 5.0 V, fSW = 500 kHz, al voltages are relative to their respective grounds (see the application schematic in Figure 32). All minimum/maximum specifications apply over the entire recommended operating range, unless otherwise noted. Al typical specifications are at TA = 25°C, VDD1 = VDDA = 5.0 V, VREG = VISO = 15 V, VDD2 = 5.0 V.
Table 4. DC-to-DC Converter Static Specifications Parameter Symbol Min Typ Max Unit Test Conditions/Comments
DC-TO-DC CONVERTER SUPPLY Isolated Output Voltage V 13.8 15.0 16.5 V I = 0 mA, V = V × (R1 + R2)/R2 ISO ISO ISO FB Feedback Voltage Setpoint V 1.15 1.25 1.37 V I = 0 mA FB ISO V Linear Regulator Voltage V 4.5 5.0 5.5 V V = 7 V to 15 V, I = 0 mA to 50 mA DD2 DD2 REG DD2 Dropout Voltage V 0.5 1.5 V I = 50 mA DD2 (DO) DD2 Line Regulation1 V 1 20 mV/V I = 50 mA, V = V = 4.5 V to 5.5 V ISO (LINE) ISO DD1 DDA Load Regulation V 1 3 % I = 20 mA to 80 mA ISO (LOAD) ISO Output Ripple V 200 mV p-p 20 MHz bandwidth, C = 0.1 µF||47 µF, ISO (RIP) OUT I = 100 mA ISO Output Noise V 500 mV p-p 20 MHz bandwidth, C = 0.1 µF||47 µF, ISO (NOISE) OUT I = 100 mA ISO Switching Frequency f 1000 kHz R = 50 kΩ SW OC 200 kHz R = 270 kΩ OC 192 318 515 kHz V = V (open loop) OC DD2 I Quiescent Current I 3.5 5 mA DDA DDA (Q) Switch On Resistance R 0.5 Ω ON Maximum Output Supply Current I 100 140 mA f ≤ 1 MHz, V = 15.0 V ISO (MAX) SW ISO Efficiency at Maximum Output 78 % I = I , f ≤ 1 MHz ISO ISO (MAX) SW Current 1 VDD1 is the power supply for the push-pull transformer; VDDA is the power supply for Side 1 of the ADuM4070. Rev. 0 | Page 4 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