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

Analog Devices Inc. ADP1031ACPZ-1-R7

Name: ADP1031ACPZ-1-R7
Brand: Analog Devices Inc.
SKU: ADP1031ACPZ-1-R7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADP1031ACPZ-1-R7

Manufacturer:: Analog Devices Inc.

Category:: Power Supply Controllers, Monitors

Package:: 41-VFQFN Exposed Pad, CSP

Datasheet:: ADP1031ACPZ-1-R7.pdf

Description:: ISO UPMU & DIGI 5.15VOUT2

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Product details

Overview

ADP1031ACPZ-1-R7 from Analog Devices is a three-channel isolated micropower management unit (PMU) integrating flyback, buck, and inverting dc-dc regulators plus seven digital isolators. It delivers isolated bipolar outputs (VOUT1: 6 V–28 V adjustable; VOUT2: 5.15 V fixed; VOUT3: −24 V to −5 V), supports 4.5 V–60 V input, operates from −40°C to +125°C, and targets industrial power and signal isolation systems requiring compact, high-integrity power conversion.

For engineers reviewing the ADP1031ACPZ-1-R7 datasheet, ADP1031ACPZ-1-R7 pinout, ADP1031ACPZ-1-R7 application, or ADP1031ACPZ-1-R7 equivalent, this device serves as a complete isolated power and data interface solution for field-side instrumentation, PLC I/O modules, and safety-critical sensor interfaces where galvanic separation, low EMI, and multi-rail generation are mandatory.

Technical Context

The ADP1031ACPZ-1-R7 implements three independent switching regulators-flyback (250 kHz default, phase-shifted), buck (125 kHz), and inverting (125 kHz)-with factory-programmed VOUT2 = 5.15 V and adjustable VOUT1/VOUT3. Each regulator includes precision enable, power-good monitoring, overvoltage protection, and soft-start control.

Its seven iCoupler® digital isolators comprise four high-speed SPI channels (16.6 MHz, <12 ns propagation delay) and three 100 kbps general-purpose GPIOs, all sharing 565 V_PEAK reinforced insulation between field power, master, and slave domains per DIN V VDE 0884-10.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	4.5 V to 60 V - supports wide industrial supply rails including 24 V DC and 48 V telecom systems.
VOUT1 Output	6 V to 28 V adjustable - configurable via external resistor divider; used as primary isolated rail and input to downstream regulators.
VOUT2 Output	5.15 V fixed - factory-programmed; powers SPI isolator domain (SVDD1/SVDD2) and logic interfaces with ±1.5% accuracy.
VOUT3 Output	−24 V to −5 V adjustable - enables bipolar analog front-end biasing and isolated negative rail generation.
Isolation Rating	2500 V_rms for 1 minute (UL 1577); VIORM = 565 V_PEAK - meets reinforced insulation requirements for IEC 61010-1 and CSA 61010-1.
SPI Isolation Speed	16.6 MHz clock rate, 7–12 ns propagation delay - enables real-time isolated communication with microcontrollers and ADCs without timing bottlenecks.
Thermal Range	−40°C to +125°C junction temperature - qualified for harsh industrial environments including motor drives and process controllers.

Pinout & Package

The ADP1031ACPZ-1-R7 is housed in a 9 mm × 7 mm, 41-lead LFCSP package with three galvanically isolated domains: field power (VINP, SWP, PGNDP), master (MVDD, MCK, MI, MSS, MO), and slave (SVDD1, SVDD2, VOUT1–VOUT3, SGND1/SGND2). Pin 1 is MI; pins 24–26 are DNC (do not connect).

Pin/Terminal	Circuit Role	Design Meaning
MI (Pin 1)	Master SPI Data Output	Drives slave-side SO; completes full-duplex SPI link across isolation barrier.
MSS (Pin 3)	Master SPI Slave Select Input	Active-low signal enabling slave SPI peripheral; paired with SSS on slave side.
VINP (Pin 30)	Field Power Input	Main unregulated input (4.5–60 V); supplies flyback controller and internal bias circuitry.
VOUT1 (Pin 18)	Flyback Regulator Output	Primary isolated positive rail (6–28 V); feeds buck/inverting regulators and system loads.
VOUT2 (Pin 15)	Buck Regulator Output	Fixed 5.15 V output powering slave-side SPI logic (SVDD1/SVDD2) and peripherals.
VOUT3 (Pin 12)	Inverting Regulator Output	Negative rail (−24 V to −5 V); supports dual-supply op-amps and isolated analog signal conditioning.
SYNC (Pin 14)	External Clock Input	Accepts 350–750 kHz external oscillator to synchronize switching and reduce EMI in noise-sensitive applications.
PWRGD (Pin 35)	Power-Good Output	Open-drain logic signal indicating all three regulators are within ±10% of nominal output voltage.

Key Features

Feature	Design Value
Three isolated power rails	Simultaneous generation of programmable positive, fixed positive, and adjustable negative outputs eliminates need for external isolated DC-DC converters.
Phase-shifted triple-regulator operation	Reduces peak input current and conducted EMI by staggering flyback (250 kHz), buck (125 kHz), and inverter (125 kHz) switching edges.
Four high-speed SPI isolators + three GPIO isolators	Enables full isolated serial interface (MOSI/MISO/SCLK/SS) plus three auxiliary digital signals without discrete isolators or level shifters.
Integrated flyback power switch	3 Ω R_ON integrated FET simplifies transformer design and reduces BOM count versus controller-only solutions.
Factory-programmed VOUT2	5.15 V output is laser-trimmed at wafer test-no external feedback resistors required for this rail.

Applications

PLC Analog Input Module	Isolated Sensor Signal Conditioning
Use Scenario: 4–20 mA current loop receiver with isolated ADC and microcontroller interface in industrial programmable logic controller backplane. IC Role / Device Role / Timing Role: ADP1031ACPZ-1-R7 provides isolated 5.15 V (for ADC reference), −15 V (for op-amp bias), and 24 V (for loop driver), while isolating SPI between MCU and ADC. Use Value: Eliminates six discrete components (three isolated DC-DCs + three digital isolators), reducing board area by >40% and improving long-term reliability through monolithic integration.	Use Scenario: High-precision thermocouple or RTD measurement node deployed in hazardous areas with intrinsic safety barriers. IC Role / Device Role / Timing Role: ADP1031ACPZ-1-R7 generates isolated ±15 V rails for analog front-end op-amps and isolates digital control signals from field-side sensors using its SPI and GPIO channels. Use Value: Meets CISPR11 Class B radiated emissions and 565 V_PEAK insulation requirements without external filtering or creepage extensions.
Motor Drive Current Sensing	Industrial Ethernet Node Power
Use Scenario: Isolated shunt-based current sensing in three-phase inverter gate driver stage with real-time fault reporting. IC Role / Device Role / Timing Role: ADP1031ACPZ-1-R7 powers isolated current-sense amplifier (±15 V) and isolates fast fault signals (via MGPI1/MGPI2) and configuration SPI from the MCU domain. Use Value: Sub-12 ns SPI propagation delay ensures <1 µs fault-to-shutdown latency, critical for IGBT short-circuit protection.	Use Scenario: Power and data isolation for industrial Ethernet PHY (e.g., ADIN1300) in PROFINET or EtherCAT slave devices. IC Role / Device Role / Timing Role: ADP1031ACPZ-1-R7 supplies isolated 3.3 V (PHY core), 1.8 V (MAC interface), and −3.3 V (bias), while isolating MDIO/MDC and interrupt lines. Use Value: Single-chip solution replaces separate isolated buck converter and four-channel digital isolator, cutting layout complexity and qualification effort.

PLC Analog Input Module

Isolated Sensor Signal Conditioning

Use Scenario: 4–20 mA current loop receiver with isolated ADC and microcontroller interface in industrial programmable logic controller backplane.

IC Role / Device Role / Timing Role: ADP1031ACPZ-1-R7 provides isolated 5.15 V (for ADC reference), −15 V (for op-amp bias), and 24 V (for loop driver), while isolating SPI between MCU and ADC.

Use Value: Eliminates six discrete components (three isolated DC-DCs + three digital isolators), reducing board area by >40% and improving long-term reliability through monolithic integration.

Use Scenario: High-precision thermocouple or RTD measurement node deployed in hazardous areas with intrinsic safety barriers.

IC Role / Device Role / Timing Role: ADP1031ACPZ-1-R7 generates isolated ±15 V rails for analog front-end op-amps and isolates digital control signals from field-side sensors using its SPI and GPIO channels.

Use Value: Meets CISPR11 Class B radiated emissions and 565 V_PEAK insulation requirements without external filtering or creepage extensions.

Motor Drive Current Sensing

Industrial Ethernet Node Power

Use Scenario: Isolated shunt-based current sensing in three-phase inverter gate driver stage with real-time fault reporting.

IC Role / Device Role / Timing Role: ADP1031ACPZ-1-R7 powers isolated current-sense amplifier (±15 V) and isolates fast fault signals (via MGPI1/MGPI2) and configuration SPI from the MCU domain.

Use Value: Sub-12 ns SPI propagation delay ensures <1 µs fault-to-shutdown latency, critical for IGBT short-circuit protection.

Use Scenario: Power and data isolation for industrial Ethernet PHY (e.g., ADIN1300) in PROFINET or EtherCAT slave devices.

IC Role / Device Role / Timing Role: ADP1031ACPZ-1-R7 supplies isolated 3.3 V (PHY core), 1.8 V (MAC interface), and −3.3 V (bias), while isolating MDIO/MDC and interrupt lines.

Use Value: Single-chip solution replaces separate isolated buck converter and four-channel digital isolator, cutting layout complexity and qualification effort.

Equivalent & Alternatives

The following parts are listed as comparable options for similar isolated power and data interface applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADUM6421AARWZ	Four-channel SPI isolator only; no integrated power regulation - requires external isolated DC-DC for VDD domains.	Lacks multi-rail power generation; suitable only when isolated power is already available.	Select when system already includes isolated 3.3 V/5 V supplies and only digital isolation is needed.
MAX256ASA+T	Transformer driver IC only; no regulators or digital isolators - needs external feedback, rectification, and all signal isolation.	Requires full discrete isolated power design; no integrated data channels.	Choose for cost-sensitive designs where board space is less constrained and custom transformer optimization is preferred.

Compared with ADUM6421AARWZ and MAX256ASA+T, the ADP1031ACPZ-1-R7 uniquely integrates three isolated power rails and seven digital isolators in one package, eliminating inter-component timing skew, reducing PCB layer count, and guaranteeing co-located thermal behavior across power and signal domains.

Availability

ADP1031ACPZ-1-R7 is available at Aetrix Electronics and suitable for industrial automation, process control instrumentation, and isolated sensor interface designs requiring stable component supply, long lifecycle support, and certified safety compliance.

Supply support for ADP1031ACPZ-1-R7 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, serving industrial, automotive, communications, and healthcare markets.

The ADP1031ACPZ-1-R7 belongs to Analog Devices' isolated power management product line, designed specifically for space-constrained industrial systems needing simultaneous isolated power and data transfer with regulatory-certified insulation integrity.

FAQ

What is the factory-programmed VOUT2 voltage for ADP1031ACPZ-1-R7?

The ADP1031ACPZ-1-R7 has a factory-programmed VOUT2 of 5.15 V, confirmed in Table 1 and General Description sections of the Rev. A datasheet. This fixed output is laser-trimmed during production and does not require external feedback resistors. The ADP1031ACPZ-1-R7 variant is explicitly designated for the 5.15 V VOUT2 option, distinguishing it from other variants offering 5.0 V or 3.3 V.

Does ADP1031ACPZ-1-R7 support external synchronization of its switching regulators?

Yes, the ADP1031ACPZ-1-R7 supports external synchronization via its SYNC pin (Pin 14), which accepts a 350 kHz to 750 kHz clock signal. When driven externally, the flyback regulator runs at f_SYNC/2 and both buck and inverting regulators run at f_SYNC/4, enabling precise EMI frequency placement and reduction in noise-sensitive applications.

How many isolation domains does ADP1031ACPZ-1-R7 implement, and what are their voltage ratings?

The ADP1031ACPZ-1-R7 implements three galvanically isolated domains: field power (VINP, SWP, PGNDP), master (MVDD, MCK, MI, etc.), and slave (SVDD1, VOUT1–VOUT3, SGND1/SGND2). It achieves 2500 V_rms isolation per UL 1577 and 565 V_PEAK working voltage (VIORM) per DIN V VDE 0884-10, with 300 V_rms basic insulation between each domain pair.

What is the purpose of the SLEW pin on ADP1031ACPZ-1-R7?

The SLEW pin (Pin 32) configures the slew rate of the flyback regulator's switching node (SWP) to control EMI. At 0.8 V, it selects slow slew; at 2 V, normal slew; and when left unconnected, it defaults to fast slew. This allows designers to trade off switching losses against radiated emissions without changing external components.

Can ADP1031ACPZ-1-R7 generate negative output voltages, and if so, how is it implemented?

Yes, the ADP1031ACPZ-1-R7 generates negative output voltages via its integrated inverting regulator, which outputs VOUT3 from −24 V to −5 V. This is implemented using an internal NMOS/PMOS switch pair (RON_NFET = 1.45 Ω, RON_PFET = 2.2 Ω) and external inductor/capacitor components, with feedback referenced to VOUT3 (FB3 pin) and regulated independently of other rails.

ADP1031ACPZ-1-R7 Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

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

Packaging:: Tape & Reel (TR)

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-1-R7 FAQ

1.How can I place an order for ADP1031ACPZ-1-R7 through Aetrix?

Please submit a Request for Quotation (RFQ) for ADP1031ACPZ-1-R7 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-1-R7 reliable?

The price and inventory of ADP1031ACPZ-1-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1031ACPZ-1-R7 is usually 5 days.

3.What payment methods are accepted for ADP1031ACPZ-1-R7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1031ACPZ-1-R7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADP1031ACPZ-1-R7?

ADP1031ACPZ-1-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADP1031ACPZ-1-R7 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-1-R7?

For technical support, including ADP1031ACPZ-1-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1031ACPZ-1-R7 requirements.

6.How does Aetrix verify that ADP1031ACPZ-1-R7 is sourced from the original manufacturer or authorized distributors?

All ADP1031ACPZ-1-R7 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-1-R7 meets industry standards.

7.What is the process for return or replacement of ADP1031ACPZ-1-R7?

All ADP1031ACPZ-1-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1031ACPZ-1-R7, 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-1-R7 part is unused and in its original packaging.

Return procedure for ADP1031ACPZ-1-R7:

1.Submit a request within 90 days.

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

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