Datasheet ADUM3070 (Analog Devices) - 4

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ADuM3070 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. 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, 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 VISO 3.0 3.3 3.63 V IISO = 0 mA, VISO = VFB × (R1 + R2)/R2 Feedback Voltage Setpoint VFB 1.15 1.25 1.37 V IISO = 0 mA Line Regulation V 1 2 ISO (LINE) 1 10 mV/V IISO = 50 mA, VDD1 = VDDA = 4.5 V to 5.5V Load Regulation VISO (LOAD) 1 2 % IISO = 50 mA to 200 mA Output Ripple VISO (RIP) 50 mV p-p 20 MHz bandwidth, COUT = 0.1 µF| 47 µF, IISO = 100 mA Output Noise VISO (NOISE) 100 mV p-p 20 MHz bandwidth, COUT = 0.1 µF| 47 µF, IISO = 100 mA Switching Frequency fSW 1000 kHz ROC = 50 kΩ 200 kHz ROC = 270 kΩ 209 318 515 kHz VOC = VDD2 (open-loop) IDDA Quiescent IDDA (Q) 3.5 5 mA Switch On Resistance RON 0.5 Ω Maximum Output Supply Current IISO (MAX) 400 500 mA f ≤ 1 MHz, VISO = 3.3 V Efficiency at Maximum Output Current 70 % IISO = IISO (MAX), f ≤ 1 MHz 1 VDD1 is the power supply for the push-pull transformer. 2 VDDA is the power supply of Side 1 of the ADuM3070.
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, all 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. All 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 VISO 13.8 15.0 16.5 V IISO = 0 mA, VISO = VFB × (R1 + R2)/R2 Feedback Voltage Setpoint VFB 1.15 1.25 1.37 V IISO = 0 mA VDD2 Linear Regulator Voltage VDD2 4.5 5.0 5.48 V VREG = 7 V to 15 V, IDD2 = 0 mA to 50 mA Dropout Voltage VDD2DO 0.5 1.5 V IDD2 = 50 mA Line Regulation V 1 2 ISO (LINE) 1 20 mV/V IISO = 50 mA, VDD1 = VDDA = 4.5 V to 5.5 V Load Regulation VISO (LOAD) 1 3 % IISO = 20 mA to 100 mA Output Ripple VISO (RIP) 200 mV p-p 20 MHz bandwidth, COUT = 0.1 µF| 47 µF, IISO = 100 mA Output Noise VISO (NOISE) 500 mV p-p 20 MHz bandwidth, COUT = 0.1 µF| 47 µF, IISO = 100 mA Switching Frequency fSW 1000 kHz ROC = 50 kΩ 200 kHz ROC = 270 kΩ 192 318 515 kHz VOC = VDD2 (open-loop) IDDA Quiescent IDDA (Q) 3.5 5 mA Switch On Resistance RON 0.5 Ω Maximum Output Supply Current IISO (MAX) 100 140 mA f ≤ 1 MHz, VISO = 15.0 V Efficiency at Maximum Output Current 70 % IISO = IISO (MAX), f ≤ 1 MHz 1 VDD1 is the power supply for the push-pull transformer. 2 VDDA is the power supply of Side 1 of the ADuM3070. Rev. A | 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) 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