R2 MGND Three-Channel, Isolated Micropower Management Unit with Seven Digital Isolators Data Sheet ADP1031 FEATURES TYPICAL APPLICATION CIRCUIT V V INP OUT1 D1 Wide input supply voltage range: 4.5 V to 60 V 1:1 4.5V TO 60V 6V TO 28V Integrated flyback power switch R FT1 C FLYBK Tx1 Generates isolated, independent bipolar outputs and factory R FB1 programmable buck output V : 21 V, 24 V or 6 V to 28 V OUT1 SWP FB1 SGND2 VINP VOUT1 V : 5.15 V, 5.0 V, or 3.3 V OUT2 V OUT2 SYNC R3 3.3V, 5V, 5.15V V : 24 V to 5 V OUT3 C EN IN VOUT2 Uses a 1:1 ratio transformer for simplified transformer design ADP1031 SW2 C BUCK L1 PGNDP V OUT3 Peak current limiting and OVP for flyback, buck, and PGNDP 24V TO 5V GNDP VOUT3 inverting regulators R FB3 SLEW FB3 C INV L2 R Precision enable input and power-good output FT3 SW3 Adjustable switching frequency via SYNC input Internal compensation and soft start control per regulator ISOLATED GPIO ISOLATED GPIO CHANNELS AND SPI CHANNELS AND SPI High speed, low propagation delay, SPI signal isolation INTERFACE INTERFACE channels PWRGD SVDD2 MVDD Three, 100 kbps general-purpose isolated data channels R1 2.3V TO 5.5V SVDD C3 1.8V TO 5.5V 9 mm 7 mm LFCSP form factor enables small overall SGND2 MVDD SVDD1 solution size C1 C4 SGND1 40C to +125C operating junction temperature range Conforms to CISPR11 Class B radiated emission limits Figure 1. Safety and regulatory approvals (pending) Operating over an input voltage range of +4.5 V to +60 V, the UL recognition: 2500 V rms for 1 minute per UL 1577 ADP1031 generates isolated output voltages of +6 V to +28 V CSA Component Acceptance Notice 5A (adjustable version) or+ 21 V and +24 V (fixed versions) for 300 V rms basic insulation between slave, master, and V , factory programmable voltages of +5.15 V, +5.0 V, or field power domains (IEC 61010-1, pending) OUT1 +3.3 V for V , and an adjustable output voltages of 24 V to VDE certificate of conformity OUT2 5 V for V . DIN V VDE 0884-10 (VDE 0884-10):2006-12 OUT3 V = 565 V IORM PEAK By default, the ADP1031 flyback regulator operates at a 250 kHz switching frequency and the buck and inverting regulators operate APPLICATIONS at 125 kHz. All three regulators are phase shifted relative to each Industrial automation and process control other to reduce electromagnetic interference (EMI). The ADP1031 Instrumentation and data acquisition systems can be driven by an external oscillator in the range of 350 kHz to Data and power isolation 750 kHz to ease noise filtering in sensitive applications. GENERAL DESCRIPTION The digital isolators integrated in the ADP1031 use Analog The ADP1031 is a high performance, isolated micropower Devices, Inc., iCoupler chip scale transformer technology, management unit (PMU) that combines an isolated flyback optimized for low power and low radiated emissions. dc-to-dc regulator, an inverting dc-to-dc regulator, and a The ADP1031 is available in a 9 mm 7 mm, 41-lead LFCSP and buck dc-to-dc regulator, providing three isolated power rails. is rated for a 40C to +125C operating junction temperature Additionally, the ADP1031 contains four, high speed, serial range. peripheral interface (SPI) isolation channels and three general- COMPANION PRODUCTS purpose isolators for channel to channel applications where low power dissipation and small solution size is required. Analog Output DAC: AD5758 Precision Data Acquisition Subsystem: AD7768-1 Additional companion products on the ADP1031 product page Rev. A Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 2019 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. 16434-101ADP1031 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Buck Regulator ........................................................................... 25 Applications ....................................................................................... 1 Inverting Regulator .................................................................... 26 General Description ......................................................................... 1 Power Good ................................................................................ 26 Typical Application Circuit ............................................................. 1 Power-Up Sequence ................................................................... 26 Companion Products ....................................................................... 1 Oscillator and Synchronization ................................................ 26 Revision History ............................................................................... 2 Thermal Shutdown .................................................................... 27 Specif icat ions ..................................................................................... 3 Data Isolation .............................................................................. 27 Regulatory Information ............................................................... 7 Applications Information .............................................................. 29 Electromagnectic Compatibility ................................................. 8 Component Selection ................................................................ 29 Insulation and Safety Related Specifications ............................ 8 Flyback Regulator Components Selection .............................. 30 DIN V VDE 0884-10 (VDE V 0884-10) Insulation Buck Regulator Components Selection ................................... 33 Characteristics .............................................................................. 9 Inverting Regulator Component Selection ............................. 33 Absolute Maximum Ratings .......................................................... 10 Insulation Lifetime ..................................................................... 34 Thermal Resistance .................................................................... 10 Thermal Analysis ....................................................................... 35 ESD Caution ................................................................................ 10 Typical Application Circuit ....................................................... 36 Pin Configuration and Function Descriptions ........................... 11 PCB Layout Considerations .......................................................... 37 Typical Performance Characteristics ........................................... 13 Outline Dimensions ....................................................................... 38 Theory of Operation ...................................................................... 23 Ordering Guide .......................................................................... 38 Flyback Regulator ....................................................................... 24 REVISION HISTORY 12/2019Rev. 0 to Rev. A and Use of Parameters Example Section, and Figure 75 Changes Table 9 .............................................................................. 11 Renumbered Sequentially ............................................................. 35 Changes to Figure 48 and Figure 51 ............................................. 20 Changes to Figure 76 ...................................................................... 36 Changes to Figure 52 to Figure 57 ................................................ 21 Updated Outline Dimensions ....................................................... 38 Changes to Figure 58 to Figure 63 ................................................ 22 Changes to Ordering Guide .......................................................... 38 Changes to Insulation Lifetime Section ....................................... 34 Added Surface Tracking Section, Insulation Wear Out Section, 1/2019Revision 0: Initial Version Equation 1 and Equation 2 Renumbered Sequentially, Calculation Rev. 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