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Analog Devices Inc. ADP1031ACPZ-3
- Part No.:
- ADP1031ACPZ-3
- Manufacturer:
- Analog Devices Inc.
- Category:
- Power Supply Controllers, Monitors
- Package:
- 41-VFQFN Exposed Pad, CSP
- Datasheet:
-
ADP1031ACPZ-3.pdf
- Description:
- ISO UPMU & DIGI 3.3VOUT2
- Quantity:
- Payment:
- Shipping:
Inventory:357
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Product details
Overview
ADP1031ACPZ-3 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 factory-programmed 3.3 V (VOUT2), adjustable ±5 V to ±24 V (VOUT1/VOUT3), and supports 4.5 V–60 V input for industrial power and signal isolation applications.
For engineers reviewing the ADP1031ACPZ-3 datasheet, ADP1031ACPZ-3 pinout, ADP1031ACPZ-3 application, or ADP1031ACPZ-3 equivalent, this device serves as a complete isolated power + data interface solution requiring no external isolators, minimal transformer design effort, and precise sequencing across three independent isolated domains.
Technical Context
The ADP1031ACPZ-3 implements phase-shifted regulation: flyback at 250 kHz (or SYNC-driven 350–750 kHz), buck and inverting regulators at 125 kHz, reducing EMI. Its iCoupler® chip-scale transformer isolators provide 100 kbps general-purpose channels and high-speed SPI isolation up to 16.6 MHz with sub-12 ns propagation delay.
All three regulators feature internal compensation, soft-start timers (8 ms), precision enable input (1.10–1.20 V threshold), and independent power-good monitoring with ±12.5% window per rail. The device enforces safety via 2500 Vrms UL 1577 isolation, VIORM = 565 VPEAK, and DIN V VDE 0884-10 certification pending.
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 without pre-regulation. |
| VOUT2 Output | 3.3 V (factory-programmed) - fixed low-noise output for microcontrollers or ADCs on slave domain. |
| VOUT1 Range | 6 V to 28 V (adjustable) - configurable positive rail for analog front-ends or sensors requiring isolated bias. |
| VOUT3 Range | −24 V to −5 V (adjustable) - negative rail for op-amp supplies or instrumentation amplifiers needing bipolar operation. |
| Digital Isolators | 7 total: 4 high-speed SPI channels + 3 general-purpose GPIO - eliminates need for discrete isolators in PLC I/O modules. |
| Package | 41-lead LFCSP (9 mm × 7 mm) - compact footprint enabling space-constrained isolated power designs. |
| Operating Temperature | −40°C to +125°C junction - qualified for harsh industrial environments including motor drives and process control cabinets. |
Pinout & Package
ADP1031ACPZ-3 is housed in a 41-lead, 9 mm × 7 mm LFCSP package with three galvanically isolated domains: field power (VINP, SWP, PGNDP), master (MVDD, MCK, MI, etc.), and slave (SVDD1/SVDD2, VOUT1–VOUT3, FB1/FB3, etc.). Pin 1 is located at top-left per Figure 3; pins 24–26 are DNC (do not connect).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VINP | Field Power Input | Main high-voltage input (4.5–60 V); powers flyback regulator and enables all outputs. |
| VOUT2 | Buck Regulator Output | Fixed 3.3 V output for slave-side logic; requires SGND2 return path. |
| FB1 | Flyback Feedback Input | Connects to resistor divider on VOUT1 to set 6–28 V output; 0.8 V reference. |
| FB3 | Inverting Regulator Feedback | Referenced to VOUT3; sets −24 V to −5 V output using 0.8 V internal reference. |
| SYNC | External Clock Input | Accepts 350–750 kHz clock to synchronize switching and reduce EMI in noise-sensitive systems. |
| PWRGD | Power-Good Output | Open-drain signal asserting when all three outputs are within ±12.5% of target. |
| EN | Enable Input | Logic-compatible enable with 1.10–1.20 V rising threshold and 100 mV hysteresis. |
| MCK / MO / MI / SO | SPI Isolation Channels | Four bidirectional SPI isolator pins (MCK, MO, MI, SO) supporting up to 16.6 MHz clock rate. |
| MGPI1 / MGPI2 / SGPI3 | General-Purpose Isolators | Three 100 kbps isolated GPIO channels with 14 µs propagation delay and 19.5 µs jitter. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated triple-isolated power | Flyback (VOUT1), buck (VOUT2 = 3.3 V), and inverting (VOUT3) regulators eliminate need for three separate isolated ICs or discrete transformers. |
| Transformer simplification | 1:1 turns ratio requirement reduces BOM cost, design time, and qualification risk versus custom multi-winding transformers. |
| Phase-shifted switching | 250 kHz (flyback) + 125 kHz (buck/inverter) operation minimizes peak input current and conducted EMI in shared input paths. |
| Low-power isolation | iCoupler® technology achieves <2.5 mA quiescent current per isolator domain while maintaining >100 kV/µs CMTI. |
| Factory-programmed output | VOUT2 = 3.3 V is permanently configured at wafer level - no external resistors or configuration pins required for this rail. |
Applications
| Industrial PLC Analog Input Modules | Isolated Data Acquisition Systems |
|---|---|
Use Scenario: 16-bit ADC-based temperature/pressure sensor conditioning in hazardous-area field transmitters. IC Role / Device Role / Timing Role: Provides isolated 3.3 V (VOUT2) for ADC/MCU, ±15 V (VOUT1/VOUT3) for op-amp signal conditioning, and SPI isolation for digital interface. Use Value: Eliminates six discrete components (three isolated DC/DCs + three digital isolators), reducing PCB area by >40% vs. discrete solution. |
Use Scenario: High-precision strain gauge bridge measurement with galvanic separation from host controller. IC Role / Device Role / Timing Role: Supplies isolated ±12 V rails for instrumentation amplifiers and isolates SPI commands/responses between ADC and host MCU. Use Value: Achieves <125 ns SPI latency and <60 ps RMS jitter - critical for synchronized multi-channel sampling at 1 MSPS. |
| Motor Drive Gate Driver Power | Isolated Industrial Ethernet Nodes |
Use Scenario: Auxiliary power for isolated gate drivers in 3-phase IGBT inverters operating from 400 V DC bus. IC Role / Device Role / Timing Role: Generates 24 V (VOUT1) for high-side driver bias and −15 V (VOUT3) for IGBT turn-off, with EN-controlled sequencing. Use Value: UVLO thresholds (4.44 V rising) ensure reliable startup even during brownout conditions on 48 V auxiliary supply. |
Use Scenario: Power and data isolation for PROFINET or EtherCAT slave nodes in factory automation networks. IC Role / Device Role / Timing Role: Delivers isolated 3.3 V (VOUT2) for PHY/MAC and uses MGPI1/MGPI2/SGPI3 for LED status signaling across isolation barrier. Use Value: 100 kbps GPIO isolation meets real-time diagnostics timing requirements without adding latency to packet processing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated power + data interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADP1031ACPZ-1 | VOUT2 = 5.15 V (not 3.3 V); same pinout, package, and isolation architecture. | Suitable for systems requiring higher slave-side logic voltage (e.g., 5 V ADCs or legacy microcontrollers). | Select ADP1031ACPZ-1 only if 5.15 V rail is needed; ADP1031ACPZ-3 is optimal for modern 3.3 V digital loads. |
| ADUM6421AARWZ | Digital isolator only (6-channel), no integrated power; requires external isolated DC/DC converters. | Used where power architecture is already defined and only data isolation is needed; lacks PMU integration. | Choose ADUM6421AARWZ only when existing isolated power supplies exist and board space permits discrete implementation. |
Compared with ADP1031ACPZ-1, the ADP1031ACPZ-3 provides lower VOUT2 for reduced power dissipation in 3.3 V systems; compared with ADUM6421AARWZ, it integrates full power conversion, eliminating transformer selection, layout complexity, and inter-stage coupling risks.
Availability
ADP1031ACPZ-3 is available at Aetrix Electronics and suitable for industrial automation, process control, and isolated data acquisition systems requiring stable component supply, long-term lifecycle support, and certified safety isolation.
Supply support for ADP1031ACPZ-3 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 fully integrated isolated power management units targeting space- and reliability-critical industrial systems where combining power and data isolation into one package reduces design risk and time-to-market.
FAQ
What output voltage is factory-programmed on VOUT2 for the ADP1031ACPZ-3?
The ADP1031ACPZ-3 has VOUT2 factory-programmed to 3.3 V, as confirmed in Table 1 and the General Description section of the Rev. A datasheet. This fixed output eliminates external feedback resistors and ensures consistent performance across production lots without calibration.
Does the ADP1031ACPZ-3 require an external transformer, and what is the recommended turns ratio?
Yes, the ADP1031ACPZ-3 requires an external transformer for the flyback regulator. The datasheet specifies a 1:1 turns ratio (e.g., part number 750316743) to simplify magnetics design, reduce cost, and improve manufacturability versus custom multi-ratio transformers.
How many isolated power domains does the ADP1031ACPZ-3 support, and how are they separated?
The ADP1031ACPZ-3 supports three galvanically isolated domains: field power (VINP, SWP, PGNDP), master (MVDD, MCK, MI, etc.), and slave (SVDD1/SVDD2, VOUT1–VOUT3). Physical separation is enforced by internal insulation barriers meeting 2500 Vrms UL 1577 and VIORM = 565 VPEAK.
Can the ADP1031ACPZ-3 operate without connecting the SYNC pin?
Yes, the ADP1031ACPZ-3 operates without SYNC - defaulting to 250 kHz (flyback) and 125 kHz (buck/inverter). However, the datasheet states SYNC must not be left floating; a 100 kΩ pull-down resistor to SGND2 is mandatory to prevent erratic behavior.
What is the maximum total output power capability of the ADP1031ACPZ-3 under typical conditions?
Under typical conditions (VINP = 24 V, VOUT1 = 24 V/70 mA, VOUT2 = 5.15 V/7 mA, VOUT3 = −15 V/−0.3 mA), the ADP1031ACPZ-3 delivers 1720 mW total output power at 88.8% efficiency, as specified in Table 1 of the Rev. A datasheet.
ADP1031ACPZ-3 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-3 FAQ
1.How can I place an order for ADP1031ACPZ-3 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP1031ACPZ-3 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-3 reliable?
The price and inventory of ADP1031ACPZ-3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1031ACPZ-3 is usually 5 days.
3.What payment methods are accepted for ADP1031ACPZ-3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1031ACPZ-3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP1031ACPZ-3?
ADP1031ACPZ-3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP1031ACPZ-3 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-3?
For technical support, including ADP1031ACPZ-3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1031ACPZ-3 requirements.
6.How does Aetrix verify that ADP1031ACPZ-3 is sourced from the original manufacturer or authorized distributors?
All ADP1031ACPZ-3 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-3 meets industry standards.
7.What is the process for return or replacement of ADP1031ACPZ-3?
All ADP1031ACPZ-3 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1031ACPZ-3, 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-3 part is unused and in its original packaging.
Return procedure for ADP1031ACPZ-3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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