Datasheet ADP1031 (Analog Devices)

Three-Channel, Isolated Micropower Management Unit with Seven Digital Isolators Data Sheet ADP1031 FEATURES TYPICAL APPLICATION CIRCUIT Wide input supply voltage range: 4.5 V to 60 V VINP VOUT1 4.5V TO 60V 1:1 D1 6V TO 28V Integrated flyback power switch RFT1 Generates isolated, independent bipolar outputs and factory Tx1 CFLYBK R programmable buck output FB1 VOUT1: 21 V, 24 V or 6 V to 28 V SWP FB1 SGND2 V VINP OUT2: 5.15 V, 5.0 V, or 3.3 V VOUT1 V V SYNC OUT2 R3 OUT3: −24 V to −5 V 3.3V, 5V, 5.15V CIN EN VOUT2 Uses a 1:1 ratio transformer for simplified transformer design R2 ADP1031 SW2 L1 CBUCK Peak current limiting and OVP for flyback, buck, and PGNDP VOUT3 PGNDP –24V TO –5V inverting regulators GNDP VOUT3 SLEW RFB3 Precision enable input and power-good output FB3 CINV L2 RFT3 SW3 Adjustable switching frequency via SYNC input Internal compensation and soft start control per regulator ISOLATED GPIO ISOLATED GPIO High speed, low propagation delay, SPI signal isolation CHANNELS AND SPI CHANNELS AND SPI INTERFACE INTERFACE channels PWRGD Three, 100 kbps general-purpose isolated data channels MVDD SVDD2 2.3V TO 5.5V R1 SVDD C3 9 mm × 7 mm LFCSP form factor enables small overall 1.8V TO 5.5V MVDD SGND2 solution size C1 SVDD1 C4
101
−40°C to +125°C operating junction temperature range MGND SGND1 Conforms to CISPR11 Class B radiated emission limits
16434- Figure 1.
Safety and regulatory approvals (p ending) UL recognition: 2500 V rms for 1 minute per UL 1577
Operating over an input voltage range of +4.5 V to +60 V, the
CSA Component Acceptance Notice 5A
ADP1031 generates isolated output voltages of +6 V to +28 V
300 V rms basic insulation between slave, master, and
(adjustable version) or+ 21 V and +24 V (fixed versions) for
field power domains (IEC 61010-1, pending)
VOUT1, factory programmable voltages of +5.15 V, +5.0 V, or
VDE certificate of conformity
+3.3 V for VOUT2, and an adjustable output voltages of −24 V to
DIN V VDE 0884-10 (VDE 0884-10):2006-12
−5 V for VOUT3.
VIORM = 565 VPEAK
By default, the ADP1031 flyback regulator operates at a 250 kHz
APPLICATIONS
switching frequency and the buck and inverting regulators operate at 125 kHz. Al 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 −40°C to +125°C operating junction temperature Additionally, the ADP1031 contains four, high speed, serial range. peripheral interface (SPI) isolation channels and three general- purpose isolators for channel to channel applications where low
COMPANION PRODUCTS
power dissipation and small solution size is required.
Analog Output DAC: AD5758 Precision Data Acquisition Subsystem: AD7768-1 Additional companion products on the ADP1031 pr oduct 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 rights of third parties that may result from its use. Specifications subject to change without notice. No One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: 781.329.4700 ©2019 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com
Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TYPICAL APPLICATION CIRCUIT COMPANION PRODUCTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS REGULATORY INFORMATION ELECTROMAGNECTIC COMPATIBILITY INSULATION AND SAFETY RELATED SPECIFICATIONS DIN V VDE 0884-10 (VDE V 0884-10) INSULATION CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION FLYBACK REGULATOR Flyback Regulator Operation Power Saving Mode (PSM) Flyback Undervoltage Lockout (UVLO) Flyback Regulator Precision Enable Control Flyback Regulator Soft Start Flyback Slew Rate Control Flyback Regulator Overcurrent Protection Flyback Regulator Overvoltage Protection BUCK REGULATOR Buck Regulator Operation Buck Regulator UVLO Buck Regulator Soft Start Buck Regulator Current-Limit Protection Buck Regulator OVP Buck Regulator Active Pull-Down Resistor INVERTING REGULATOR Inverting Regulator Operation Inverting Regulator UVLO Inverting Regulator Soft Start Inverting Regulator Current-Limit Protection Inverting Regulator OVP Inverting Regulator Active Pull-Down Resistor POWER GOOD POWER-UP SEQUENCE OSCILLATOR AND SYNCHRONIZATION THERMAL SHUTDOWN DATA ISOLATION High Speed SPI Channels GPIO Data Channels APPLICATIONS INFORMATION COMPONENT SELECTION Feedback Resistors Capacitor Selection FLYBACK REGULATOR COMPONENTS SELECTION Input Capacitor Output Capacitor Ripple Current vs. Capacitor Value Schottky Diode Transformer Turn Ratio Primary Inductance Flyback Transformer Saturation Current Series Winding Resistance Leakage Inductance and Clamping Circuits Clamping Resistor Clamping Capacitor Clamping Diode Diode Zener Diode Clamp Ripple Current (IAC) vs. Inductance Maximum Output Current Calculation BUCK REGULATOR COMPONENTS SELECTION Inductor Output Capacitor INVERTING REGULATOR COMPONENT SELECTION Inductor Output Capacitor Inverting Regulator Stability INSULATION LIFETIME Surface Tracking Insulation Wear Out Calculation and Use of Parameters Example THERMAL ANALYSIS TYPICAL APPLICATION CIRCUIT PCB LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE