Datasheet ADuM5020, ADuM5028 (Analog Devices)

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Low Emission, Isolated DC-to-DC Converters Data Sheet ADuM5020/ ADuM5028 FEATURES FUNCTIONAL BLOCK DIAGRAMS iso Power integrated, isolated dc-to-dc converter NIC 1 16 NIC ADuM5020 100 mA output current for ADuM5020 GND1 2 15 GNDISO 60 mA output current for ADuM5028 PDIS 3 PCS 14 V Meets CISPR22 Class B emissions limits at full load on a SEL 2-layer PCB GND1 4 13 GNDISO 16-lead SOIC_W package with 7.8 mm minimum creepage VDDP 5 OSC RECT REG 12 VISO 8-lead SOIC_IC package with 8.3 mm minimum creepage GND1 6 11 GNDISO High temperature operation: 125°C maximum NIC 7 10 NIC Safety and regulatory approvals GND1 8 9 GNDISO
1
UL recognition (pending)
-00
3000 V rms for 1 minute per UL 1577 NIC = NO INTERNAL CONNECTION. LEAVE THIS PIN FLOATING.
520 16
CSA Component Acceptance Notice 5A (pending)
Figure 1. ADuM5020 Functional Block Diagram
VDE certificate of conformity (pending) VDE V 0884-10 VIORM = 565 V peak ADuM5028 CQC certification per GB4943.1-2011 (pending) PDIS 1 PCS 8 VSEL APPLICATIONS GND1 2 7 GNDISO RS-485/RS-422/CAN transceiver power VDDP 3 OSC RECT REG 6 VISO
02
Power supply start-up bias and gate drives
1
GND1 4 5 GNDISO
0- 652
Isolated sensor interfaces
1
Industrial PLCs
Figure 2. ADuM5028 Functional Block Diagram
GENERAL DESCRIPTION
The ADuM5020 and ADuM50281 are isoPower®, integrated, The ADuM5020 and ADuM5028 isolated dc-to-dc converters isolated dc-to-dc converters. Based on the Analog Devices, Inc., provide two different package variants: the ADuM5020 in a iCoupler® technology, these dc-to-dc converters provide wide body, 16-lead SOIC_W package, and the ADuM5028 in regulated, isolated power that is below CISPR22 Class B limits at the space saving, 8-lead, wide body SOIC_IC. For 5 V input full load on a 2-layer printed circuit board (PCB) with ferrites. operations, use the ADuM5020-5BRWZ and the ADuM5028- Common voltage combinations and the associated current 5BRIZ. For 3.3 V input to 3.3 V output operations, use the output levels are shown in Table 1 through Table 6. ADuM5020-3BRWZ and the ADuM5028-3RIZ. See the Pin The ADuM5020 and ADuM5028 eliminate the need to design Configuration and Function Descriptions section and the and build isolated dc-to-dc converters in applications up to Ordering Guide for more information. 500 mW. The iCoupler chip scale transformer technology is used for the magnetic components of the dc-to-dc converter. The result is a small form factor, isolated solution. 1 Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329. Other patents are pending.
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Document Outline Features Applications Functional Block Diagrams General Description Revision History Specifications Electrical Characteristics—5 V Primary Input Supply/5 V Secondary Isolated Supply Electrical Characteristics—5 V Primary Input Supply/3.3 V Secondary Isolated Supply Electrical Characteristics—3.3 V Primary Input Supply/3.3 V Secondary Isolated Supply Regulatory Approvals Insulation and Safety Related Specifications Package Characteristics 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 Theory of Operation Applications Information PCB Layout Thermal Analysis EMI Considerations Insulation Lifetime Surface Tracking Insulation Wear Out Calculation and Use of Parameters Example Outline Dimensions Ordering Guide