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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Power Supply Controllers, Monitors

Analog Devices Inc. ADP1031ACPZ-4

Name: ADP1031ACPZ-4
Brand: Analog Devices Inc.
SKU: ADP1031ACPZ-4
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADP1031ACPZ-4

Manufacturer:: Analog Devices Inc.

Category:: Power Supply Controllers, Monitors

Package:: 41-VFQFN Exposed Pad, CSP

Datasheet:: ADP1031ACPZ-4.pdf

Description:: ISO UPMU & DIGI 5.15VOUT2 24VO1

Quantity:: RFQ Add To RFQ list

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Product details

Overview

ADP1031ACPZ-4 from Analog Devices is a three-channel isolated micropower management unit (PMU) integrating flyback, buck, and inverting dc-dc regulators with seven digital isolators. It delivers fixed 24 V (VOUT1), 5.15 V (VOUT2), and adjustable −24 V to −5 V (VOUT3) outputs, supports 4.5 V–60 V input, and operates across −40°C to +125°C for industrial power and signal isolation applications.

For engineers reviewing the ADP1031ACPZ-4 datasheet, ADP1031ACPZ-4 pinout, ADP1031ACPZ-4 application, or ADP1031ACPZ-4 equivalent, key selection considerations include its factory-programmed 24 V/5.15 V dual-rail output configuration, integrated iCoupler® SPI and GPIO isolators, 250 kHz/125 kHz phase-shifted switching, and UL/VDE-certified 2500 V_rms isolation for field-to-master/slave domain separation.

Technical Context

The ADP1031ACPZ-4 implements three independent isolated regulators: a flyback regulator with internal 3 Ω FET and 250 kHz nominal frequency, a buck regulator with 1 Ω NMOS/2.5 Ω PMOS switches and 125 kHz operation, and an inverting regulator using 1.45 Ω NMOS/2.2 Ω PMOS switches also at 125 kHz - all phase-shifted to reduce EMI. Its seven digital isolators comprise four high-speed SPI channels (16.6 MHz, 7–15 ns propagation delay) and three 100 kbps general-purpose channels, all based on iCoupler® chip-scale transformer technology.

Regulator feedback uses precision 0.8 V reference nodes (FB1, FB3) with ±1.5% accuracy; power-good monitoring covers all three outputs with 87.5%–112.5% valid window and 1.36 µs glitch rejection; and safety compliance includes pending UL 1577 (2500 V_rms), VDE 0884-10 (VIORM = 565 V_PEAK), and CSA 61010-1 basic insulation at 300 V_rms.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	4.5 V to 60 V - supports wide industrial bus voltages including 24 V DC and 48 V telecom rails.
VOUT1 Output	Fixed 24 V - factory-programmed version eliminates external resistor network for stable primary isolated rail.
VOUT2 Output	Fixed 5.15 V - precision voltage optimized for analog front-end biasing and DAC reference supply.
VOUT3 Range	−24 V to −5 V - adjustable negative rail enables bipolar instrumentation amplifier and sensor biasing.
Isolation Rating	2500 V_rms for 1 minute - certified per UL 1577, enabling safe separation between field, master, and slave domains.
SPI Isolation Speed	16.6 MHz clock rate - supports high-throughput serial communication between isolated microcontrollers and ADCs/DACs.
Operating Temperature	−40°C to +125°C junction - qualified for harsh environments including motor drives and process control cabinets.

Pinout & Package

The ADP1031ACPZ-4 is housed in a 9 mm × 7 mm, 41-lead LFCSP package with omitted pins for isolation barrier integrity. Pin functions are strictly segregated across field power (PGNDP, VINP, SWP), master (MGND, MCK, MO, MI, MSS), and slave (SGND1/2, SVDD1/2, VOUT1/2/3, FB1/FB3, SYNC) domains.

Pin/Terminal	Circuit Role	Design Meaning
VINP / PGNDP	Field Power Input / Return	Primary-side 4.5–60 V supply connection; requires low-inductance layout to minimize flyback switch noise coupling.
VOUT1 / FB1	Flyback Output / Feedback	24 V fixed output with 0.8 V feedback node - connects to external resistor divider only in adjustable variants (not used in ADP1031ACPZ-4).
VOUT2 / VOUT3	Buck Output / Inverting Output	5.15 V rail powers SPI isolator domain; −15 V typical VOUT3 enables dual-supply op-amps without external charge pumps.
MCK / MO / MI / MSS	SPI Master Clock / Output / Input / Select	High-speed isolated SPI interface - MCK drives SCK, MO drives SI, MI receives SO, MSS controls SSS with active-low logic.
SGPO1 / SGPO2 / SGPI3	General-Purpose Isolated I/O	Three 100 kbps bidirectional GPIO channels - support status signaling, fault reporting, or auxiliary control across isolation barrier.
SYNC	External Frequency Synchronization	Accepts 350–750 kHz clock to align switching phases - critical for EMI-sensitive data acquisition systems sharing common PCB ground planes.

Key Features

Feature	Design Value
Integrated triple-isolated power rails	Eliminates need for three discrete isolated dc-dc converters and associated magnetics, reducing BOM count and board area by >40%.
iCoupler® SPI isolation channels	16.6 MHz bandwidth with <15 ns propagation delay enables real-time closed-loop control across isolation boundary without timing bottlenecks.
Phase-shifted regulator operation	250 kHz (flyback) + 125 kHz (buck/inverter) with 120° offset cuts peak input current ripple and eases EMI filter design.
Factory-programmed output voltages	ADP1031ACPZ-4's fixed 24 V/5.15 V outputs remove trimming components and qualification overhead versus adjustable variants.
UL/VDE-certified 2500 V_rms isolation	Meets reinforced insulation requirements for CAT II 300 V_rms mains-connected equipment per IEC 61010-1 and IEC 61800-5-1.

Applications

Industrial Process Controller	Programmable Logic Controller (PLC)
Use Scenario: Isolating analog I/O modules from CPU backplane in hazardous-area-rated controllers. IC Role / Device Role / Timing Role: ADP1031ACPZ-4 provides isolated 24 V field power, 5.15 V ADC/DAC reference, and −15 V op-amp bias while synchronizing SPI clocks to avoid metastability during scan cycles. Use Value: Single-chip solution replaces discrete flyback + buck + isolators, cutting layout complexity and enabling compact DIN-rail module designs.	Use Scenario: Powering and isolating digital I/O cards handling 24 V sensor/actuator signals in factory automation racks. IC Role / Device Role / Timing Role: ADP1031ACPZ-4 delivers isolated 24 V (VOUT1) for field-side logic, 5.15 V (VOUT2) for FPGA I/O banks, and −12 V (VOUT3) for RS-485 transceiver bias, with GPIO isolators for status LED control. Use Value: Integrated power + isolation reduces inter-card crosstalk and meets CISPR11 Class B radiated emissions without added shielding.
Data Acquisition System	Motor Drive Control Board
Use Scenario: Supplying isolated power and SPI isolation for 24-bit delta-sigma ADCs in precision test equipment. IC Role / Device Role / Timing Role: ADP1031ACPZ-4 generates clean 5.15 V reference (VOUT2) and −5 V bias (VOUT3) for differential input stages while isolating SPI commands from host MCU via four dedicated channels. Use Value: Low-noise 0.8 V feedback references and <100 ps RMS jitter preserve SNR in high-resolution measurements.	Use Scenario: Isolating gate driver supplies and feedback signals in servo drive inverters with 3-phase IGBT stacks. IC Role / Device Role / Timing Role: ADP1031ACPZ-4 powers isolated gate drivers (VOUT1 = 24 V), provides 5.15 V for current-sense amplifiers, and routes encoder position data across isolation via SPI channels. Use Value: Phase-shifted regulators suppress common-mode noise coupling into sensitive current sensing paths, improving torque control fidelity.

Industrial Process Controller

Programmable Logic Controller (PLC)

Use Scenario: Isolating analog I/O modules from CPU backplane in hazardous-area-rated controllers.

IC Role / Device Role / Timing Role: ADP1031ACPZ-4 provides isolated 24 V field power, 5.15 V ADC/DAC reference, and −15 V op-amp bias while synchronizing SPI clocks to avoid metastability during scan cycles.

Use Value: Single-chip solution replaces discrete flyback + buck + isolators, cutting layout complexity and enabling compact DIN-rail module designs.

Use Scenario: Powering and isolating digital I/O cards handling 24 V sensor/actuator signals in factory automation racks.

IC Role / Device Role / Timing Role: ADP1031ACPZ-4 delivers isolated 24 V (VOUT1) for field-side logic, 5.15 V (VOUT2) for FPGA I/O banks, and −12 V (VOUT3) for RS-485 transceiver bias, with GPIO isolators for status LED control.

Use Value: Integrated power + isolation reduces inter-card crosstalk and meets CISPR11 Class B radiated emissions without added shielding.

Data Acquisition System

Motor Drive Control Board

Use Scenario: Supplying isolated power and SPI isolation for 24-bit delta-sigma ADCs in precision test equipment.

IC Role / Device Role / Timing Role: ADP1031ACPZ-4 generates clean 5.15 V reference (VOUT2) and −5 V bias (VOUT3) for differential input stages while isolating SPI commands from host MCU via four dedicated channels.

Use Value: Low-noise 0.8 V feedback references and <100 ps RMS jitter preserve SNR in high-resolution measurements.

Use Scenario: Isolating gate driver supplies and feedback signals in servo drive inverters with 3-phase IGBT stacks.

IC Role / Device Role / Timing Role: ADP1031ACPZ-4 powers isolated gate drivers (VOUT1 = 24 V), provides 5.15 V for current-sense amplifiers, and routes encoder position data across isolation via SPI channels.

Use Value: Phase-shifted regulators suppress common-mode noise coupling into sensitive current sensing paths, improving torque control fidelity.

Equivalent & Alternatives

The following parts are listed as comparable options for similar isolated power management applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADP1031ACPZ-1	Adjustable VOUT1 (6–28 V); same VOUT2 (5.15 V) and VOUT3 range; identical isolator count/speed.	Used where variable primary rail is needed for multi-voltage sensor interfaces or legacy system compatibility.	Select ADP1031ACPZ-1 only if programmable VOUT1 is required; ADP1031ACPZ-4 offers tighter tolerance and simpler layout for fixed 24 V systems.
ISO124x series (e.g., ISO124D)	Dedicated analog isolator IC; no integrated power conversion - requires external isolated dc-dc for bias rails.	Applied when only signal isolation is needed and power architecture already includes separate isolated supplies.	Choose ISO124D only for pure analog signal isolation; ADP1031ACPZ-4 integrates full power + digital isolation, eliminating external magnetics and reducing component count.

Compared with ADP1031ACPZ-1, the ADP1031ACPZ-4 saves board space and calibration effort via factory-set 24 V/5.15 V outputs, while versus ISO124D it delivers complete isolated subsystem integration - reducing total solution size by ~35% and eliminating external transformer design risk.

Availability

ADP1031ACPZ-4 is available at Aetrix Electronics and suitable for industrial process controllers, PLC I/O modules, precision data acquisition systems, and motor drive control boards requiring stable component supply with long-term lifecycle assurance.

Supply support for ADP1031ACPZ-4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.

The ADP1031 product line delivers integrated isolated power management units targeting industrial automation, process control, and test equipment where compact size, safety certification, and simultaneous power + signal isolation are critical design requirements.

FAQ

What output voltages does the ADP1031ACPZ-4 provide?

The ADP1031ACPZ-4 provides three isolated output voltages: a fixed 24 V (VOUT1) for field-side power, a fixed 5.15 V (VOUT2) for precision analog circuitry, and an adjustable −24 V to −5 V (VOUT3) for bipolar signal conditioning. These are factory-programmed - no external resistors are needed to set VOUT1 or VOUT2, simplifying design and improving long-term stability compared to adjustable variants like ADP1031ACPZ-1.

Does the ADP1031ACPZ-4 require external transformers or inductors?

Yes, the ADP1031ACPZ-4 requires external magnetics: a 1:1 turns ratio flyback transformer (e.g., Coilcraft 750316743), plus discrete inductors for the buck and inverting regulators. The IC integrates all power switches and controllers but relies on external passive components for energy storage and isolation - this maintains flexibility in power level scaling while minimizing die size and cost.

How many digital isolation channels does the ADP1031ACPZ-4 include?

The ADP1031ACPZ-4 integrates seven digital isolators: four high-speed SPI channels (MCK/MO/MI/MSS ↔ SCK/SI/SO/SSS) supporting up to 16.6 MHz clock rates, and three general-purpose 100 kbps channels (MGPI1/MGPI2/MGPO3 ↔ SGPI3/SGPO1/SGPO2). All use Analog Devices' iCoupler® chip-scale transformer technology, delivering <15 ns propagation delay and 100 kV/µs common-mode transient immunity.

What safety certifications apply to the ADP1031ACPZ-4?

The ADP1031ACPZ-4 carries pending certifications for UL 1577 (2500 V_rms, 1 minute), CSA Component Acceptance Notice 5A, and VDE 0884-10 (VIORM = 565 V_PEAK). It meets basic insulation requirements per IEC 61010-1 (300 V_rms) and complies with CISPR11 Class B radiated emissions when used with recommended layout practices - making it suitable for industrial measurement and control equipment.

Can the ADP1031ACPZ-4 synchronize its switching frequency to an external clock?

Yes, the ADP1031ACPZ-4 supports external synchronization via its SYNC pin, accepting a 350 kHz to 750 kHz clock signal. When driven externally, the flyback regulator operates at f_SYNC/2 and the buck/inverting regulators at f_SYNC/4 - enabling precise EMI frequency placement and phase alignment across multiple ADP1031ACPZ-4 devices in dense systems. A 100 kΩ pull-down resistor to SGND2 is mandatory if SYNC is unused.

ADP1031ACPZ-4 Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: 41-VFQFN Exposed Pad, CSP

Packaging:: Tray

Product Status:: Active

Programmable:: Not Verified

Applications:: General Purpose

Voltage - Input:: 4.5V ~ 60V

Voltage - Supply:: 2.3V ~ 5.5V

Current - Supply:: -

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 41-LFCSP (9x7)

ADP1031ACPZ-4 FAQ

1.How can I place an order for ADP1031ACPZ-4 through Aetrix?

Please submit a Request for Quotation (RFQ) for ADP1031ACPZ-4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for ADP1031ACPZ-4 reliable?

The price and inventory of ADP1031ACPZ-4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1031ACPZ-4 is usually 5 days.

3.What payment methods are accepted for ADP1031ACPZ-4?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1031ACPZ-4 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADP1031ACPZ-4?

ADP1031ACPZ-4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADP1031ACPZ-4 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for ADP1031ACPZ-4?

For technical support, including ADP1031ACPZ-4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1031ACPZ-4 requirements.

6.How does Aetrix verify that ADP1031ACPZ-4 is sourced from the original manufacturer or authorized distributors?

All ADP1031ACPZ-4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADP1031ACPZ-4 meets industry standards.

7.What is the process for return or replacement of ADP1031ACPZ-4?

All ADP1031ACPZ-4 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1031ACPZ-4, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The ADP1031ACPZ-4 part is unused and in its original packaging.

Return procedure for ADP1031ACPZ-4:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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