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

Analog Devices Inc. ADP1043AACPZ-R7

Name: ADP1043AACPZ-R7
Brand: Analog Devices Inc.
SKU: ADP1043AACPZ-R7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADP1043AACPZ-R7

Manufacturer:: Analog Devices Inc.

Category:: Power Supply Controllers, Monitors

Package:: 32-VFQFN Exposed Pad, CSP

Datasheet:: ADP1043AACPZ-R7.pdf

Description:: IC SECONDARY SIDE CTRLR 32LFCSP

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Product details

Overview

ADP1043AACPZ-R7 from Analog Devices is a secondary-side digital power supply controller IC for isolated AC/DC and DC/DC converters, featuring dual current sense (CS1 + CS2±), 7-channel PWM/SR output (OUTA–OUTD, OUTAUX, SR1, SR2), integrated 8 kB EEPROM, and I²C interface. It delivers ±2.5% OVP threshold accuracy, 100 Hz/400 kHz dual-speed ADCs, and operates from a single 3.3 V supply in −40°C to +85°C ambient.

For engineers reviewing the ADP1043AACPZ-R7 datasheet, ADP1043AACPZ-R7 pinout, ADP1043AACPZ-R7 application, or ADP1043AACPZ-R7 equivalent, this page provides verified technical context, real-world use scenarios, validated alternatives, and supply-chain support for redundant server PSUs, telecom rectifiers, and high-density industrial power modules.

Technical Context

The ADP1043AACPZ-R7 implements a fully digital control loop with programmable PID filter, using multipath ADC architecture: a 12-bit low-speed Σ-Δ ADC (100 Hz) for voltage/current sensing (VS1/VS2/VS3/CS1/CS2) and a 6-bit high-speed Σ-Δ ADC (400 kHz) for fast OCP on VS1 and CS1. Its 7 PWM outputs support flexible topology mapping-including primary-side switching (OUTA–OUTD), synchronous rectification (SR1/SR2), and auxiliary timing (OUTAUX)-with adaptive dead time control and resonant mode enable.

It integrates OrFET gate drive (GATE), current sharing (SHAREi/SHAREo), hot-swap protection, and comprehensive fault monitoring (OVP/UVP/OCP/OTP/ACSNS) with programmable thresholds and response times-e.g., CS1 fast OCP triggers in 80–100 ns, while accurate OCP uses 10 ms latency. All parameters are stored in on-chip EEPROM and accessible via I²C at up to 400 kHz.

Key Specifications

Parameter	Value and Actual Design Meaning
VDD Supply	3.3 V ±0.3 V; powers entire digital core, ADCs, and I²C interface-no external LDO needed.
PWM Outputs	7 channels (OUTA–OUTD, OUTAUX, SR1, SR2); each configurable for frequency, duty, phase, and dead time-supports LLC, phase-shifted full-bridge, and active clamp topologies.
Voltage Sense Accuracy	±2.5% FSR for VS1/VS2/VS3 OVP comparators; enables precise 1 V nominal feedback with 0.5% resistor divider tolerance.
Current Sense Inputs	CS1 (single-ended, 0–1.38 V) and CS2± (differential, ±100 mV to +225 mV); supports both primary-side CT and secondary-side shunt sensing.
ADC Resolution & Speed	12-bit low-speed ADC (100 Hz) for trimming and closed-loop control; 6-bit high-speed ADC (400 kHz) for real-time overcurrent detection.
I²C Interface	Standard/fast-mode (100–400 kHz); provides full register access to fault flags, measurements, calibration data, and EEPROM programming.
EEPROM Endurance	10,000 write cycles; retains configuration for 20 years at 85°C junction-enables standalone operation without microcontroller.

Pinout & Package

ADP1043AACPZ-R7 is housed in a 32-lead, 5 mm × 5 mm LFCSP package with exposed thermal pad (EP) for enhanced thermal dissipation. The package is RoHS-compliant and rated for −40°C to +85°C operation.

Pin/Terminal	Circuit Role	Design Meaning
VS1, VS2, VS3+, VS3−	Remote/local voltage sense inputs	Differential (VS3) and single-ended (VS1/VS2) analog inputs for multi-point output regulation; require 0.5% resistors for trimmable accuracy.
CS1, CS2+, CS2−	Primary/secondary current sense inputs	CS1 handles transformer-based primary current; CS2± supports differential shunt sensing with common-mode range of 0.8–1.3 V.
OUTA–OUTD, OUTAUX, SR1, SR2	PWM and synchronous rectifier outputs	Seven independent, AGND-referenced open-drain outputs; each programmable for timing, polarity, and enable-no external drivers required for logic-level FETs.
GATE	OrFET gate drive output	Open-drain output for controlling N-channel MOSFET in hot-swap/N+1 redundancy path; supports fast (110–150 ns) or accurate (10 ms) fault response.
SHAREi / SHAREo	Current share bus interface	Digital current-sharing bus for parallel PSUs; SHAREo drives bus high; SHAREi monitors bus state-enables load balancing without external op-amps.
SCL / SDA	I²C serial interface	Standard two-wire bus for configuration, telemetry, and fault logging; supports up to 400 kHz clock with 300 ns fall time compliance.
PGOOD1 / PGOOD2	Power-good status outputs	Open-drain signals indicating system health: PGOOD1 asserts only on critical faults (UVP/OVP/OCP); PGOOD2 asserts on any flag condition.

Key Features

Feature	Design Value
Dual-speed ADC architecture	Combines 400 kHz high-speed ADC (for sub-100 ns OCP) and 100 Hz precision ADC (for <±2.5% voltage regulation)-eliminates need for external comparators or dual-sense paths.
Programmable digital PID filter	Configurable via I²C or GUI; stores coefficients in EEPROM-enables loop tuning without hardware changes or re-spinning compensation networks.
7-channel PWM/SR timing engine	Independent control of frequency, duty, phase, and dead time per output-supports interleaved, resonant, and multi-phase topologies from a single IC.
Integrated current sharing bus	Digital SHAREi/SHAREo interface with built-in arbitration-enables N+1 redundant PSU operation with <1% current imbalance across units.
Standalone EEPROM configuration	8 kB nonvolatile memory stores all settings (trim values, fault thresholds, PWM timing); allows boot-up and full operation without host MCU.
AC sense input (ACSNS)	Dedicated 0.45 V threshold input for upstream AC line monitoring-detects rectifier failure or input loss before bulk capacitor discharge, enabling graceful shutdown.

Applications

Server Redundant PSU	Telecom Rectifier Module
Use Scenario: Dual 12 V/54 A PSUs in N+1 configuration powering 1U rack servers with dynamic load steps up to 30 A/μs. IC Role / Device Role / Timing Role: Secondary-side controller managing voltage regulation, current sharing, hot-swap sequencing, and fault coordination between units via SHARE bus. Use Value: Achieves <1% current mismatch across PSUs and <100 ns fast OCP response-prevents single-point failure during transient overload or short-circuit events.	Use Scenario: 48 V telecom rectifier with -48 V output, supporting battery backup and strict EMI requirements in central office environments. IC Role / Device Role / Timing Role: Digital controller implementing resonant LLC mode with adaptive dead time, soft-start sequencing, and AC sense for brownout detection. Use Value: Enables >96% peak efficiency at full load and <10 ms OVP response-meets GR-1089-CORE immunity and NEBS Level 3 environmental compliance.
Industrial PLC Power Supply	Medical Imaging Power System
Use Scenario: Isolated 24 V/20 A DC-DC converter for programmable logic controllers operating in harsh factory environments with wide temperature swings. IC Role / Device Role / Timing Role: Voltage and current regulator with local/remote sensing, OTP via RTD, and undervoltage lockout for brownout resilience. Use Value: Maintains ±0.5% output regulation across −40°C to +85°C using on-chip trim and 12-bit ADCs-reduces need for external DACs or manual calibration.	Use Scenario: Multi-rail power system for MRI gradient amplifiers requiring tightly coupled 12 V, ±15 V, and 5 V supplies with synchronized startup and fault propagation. IC Role / Device Role / Timing Role: Centralized secondary-side controller coordinating sequencing, current sharing, and interlock signaling across rails via I²C and FLAGIN. Use Value: Enables <10 μs inter-rail timing skew and simultaneous PGOOD assertion-ensures safe ramp-up of high-current gradient coils without voltage overshoot.

Server Redundant PSU

Telecom Rectifier Module

Use Scenario: Dual 12 V/54 A PSUs in N+1 configuration powering 1U rack servers with dynamic load steps up to 30 A/μs.

IC Role / Device Role / Timing Role: Secondary-side controller managing voltage regulation, current sharing, hot-swap sequencing, and fault coordination between units via SHARE bus.

Use Value: Achieves <1% current mismatch across PSUs and <100 ns fast OCP response-prevents single-point failure during transient overload or short-circuit events.

Use Scenario: 48 V telecom rectifier with -48 V output, supporting battery backup and strict EMI requirements in central office environments.

IC Role / Device Role / Timing Role: Digital controller implementing resonant LLC mode with adaptive dead time, soft-start sequencing, and AC sense for brownout detection.

Use Value: Enables >96% peak efficiency at full load and <10 ms OVP response-meets GR-1089-CORE immunity and NEBS Level 3 environmental compliance.

Industrial PLC Power Supply

Medical Imaging Power System

Use Scenario: Isolated 24 V/20 A DC-DC converter for programmable logic controllers operating in harsh factory environments with wide temperature swings.

IC Role / Device Role / Timing Role: Voltage and current regulator with local/remote sensing, OTP via RTD, and undervoltage lockout for brownout resilience.

Use Value: Maintains ±0.5% output regulation across −40°C to +85°C using on-chip trim and 12-bit ADCs-reduces need for external DACs or manual calibration.

Use Scenario: Multi-rail power system for MRI gradient amplifiers requiring tightly coupled 12 V, ±15 V, and 5 V supplies with synchronized startup and fault propagation.

IC Role / Device Role / Timing Role: Centralized secondary-side controller coordinating sequencing, current sharing, and interlock signaling across rails via I²C and FLAGIN.

Use Value: Enables <10 μs inter-rail timing skew and simultaneous PGOOD assertion-ensures safe ramp-up of high-current gradient coils without voltage overshoot.

Equivalent & Alternatives

The following parts are listed as comparable options for similar secondary-side digital power controller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
UCC28950RTJT	Analog PWM controller with fixed-frequency phase-shifted topology; no integrated ADCs, EEPROM, or I²C-requires external MCU for digital features.	Lacks digital loop tuning, current sharing bus, and standalone operation; suited for cost-sensitive, fixed-design PSUs without telemetry needs.	Select UCC28950RTJT when analog control simplicity and BOM cost outweigh programmability and telemetry requirements.
MAX15301ATI+	Digital PMBus controller with 12-bit ADCs and EEPROM; supports only 4 PWM outputs and no resonant mode-no ACSNS or OrFET drive.	Targeted at point-of-load regulators, not isolated AC/DC; lacks SHARE bus and GATE output for N+1 redundancy.	Select MAX15301ATI+ for compact, non-redundant DC-DC modules where isolation and hot-swap are not required.

Compared with UCC28950RTJT and MAX15301ATI+, the ADP1043AACPZ-R7 uniquely combines 7-channel PWM flexibility, resonant mode support, dedicated OrFET control, and digital current sharing-making it the only option among the three qualified for high-reliability, isolated, N+1 redundant power systems with full telemetry and field-upgradable firmware.

Availability

ADP1043AACPZ-R7 is available at Aetrix Electronics and suitable for server redundant PSUs, telecom rectifier modules, and industrial PLC power supplies requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for ADP1043AACPZ-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, headquartered in Norwood, MA.

The ADP1043AACPZ-R7 belongs to Analog Devices' digital power controller product line, engineered specifically for high-efficiency, isolated, redundant power conversion in data center, telecom, and industrial infrastructure.

FAQ

What is the operating voltage range for the ADP1043AACPZ-R7 VDD supply?

The ADP1043AACPZ-R7 operates from a single 3.3 V supply with a specified range of 3.1 V to 3.6 V. This rail powers all internal circuitry including the digital core, ADCs, I²C interface, and PWM outputs. Operation outside this range risks UVLO activation below 2.75 V or OVLO shutdown above 4.1 V, as defined in the absolute maximum ratings table. The ADP1043AACPZ-R7 does not include an internal VDD regulator, so a clean, well-decoupled 3.3 V source is mandatory.

Does the ADP1043AACPZ-R7 support resonant mode operation, and how is it configured?

Yes, the ADP1043AACPZ-R7 supports resonant mode operation-including LLC and phase-shifted topologies-via dedicated registers (e.g., RESONANT_EN, PWM timing in resonant mode). Configuration is performed through the I²C interface or Analog Devices' GUI software, which sets frequency limits, adjusts PWM timing, enables feedback control in resonant mode, and configures soft-start behavior. The RES pin (Pin 30) sets the internal oscillator reference, and the device maintains adaptive dead time control to optimize ZVS performance across line/load conditions.

How many current sense inputs does the ADP1043AACPZ-R7 have, and what are their key differences?

The ADP1043AACPZ-R7 has two distinct current sense inputs: CS1 (single-ended, 0–1.38 V range) optimized for primary-side current transformer signals, and CS2± (differential, ±100 mV to +225 mV range) designed for secondary-side shunt sensing. CS1 supports fast OCP in 80–100 ns and accurate OCP in 10 ms; CS2± offers ±4 mV accuracy in its low-range region and supports OrFET protection with programmable thresholds down to ±10 mV. Both inputs feed independent 12-bit ADCs with 100 Hz sampling.

Can the ADP1043AACPZ-R7 operate without a microcontroller, and what functions remain available?

Yes, the ADP1043AACPZ-R7 can operate fully standalone using its integrated 8 kB EEPROM, which stores all calibrated values, loop filter coefficients, PWM timing, fault thresholds, and startup sequences. Functions retained include closed-loop voltage regulation, current sharing via SHARE bus, OVP/UVP/OCP/OTP protection, PGOOD signaling, and resonant mode control. The I²C interface remains accessible for monitoring but is not required for basic operation-making the ADP1043AACPZ-R7 ideal for space-constrained or MCU-less designs.

What is the purpose of the ACSNS pin on the ADP1043AACPZ-R7, and what voltage threshold does it trigger at?

The ACSNS (AC Sense) pin on the ADP1043AACPZ-R7 provides upstream AC line monitoring to detect input loss or rectifier failure before bulk capacitor discharge. It triggers at a nominal threshold of 0.45 V (min 0.3 V, max 0.65 V) referenced to PGND. When asserted, it initiates controlled shutdown sequences-including disabling PWM outputs and asserting PGOOD deassertion-to prevent unregulated output collapse. In resonant mode, ACSNS also contributes to volt-second balance enforcement and enables fast restart after AC recovery.

ADP1043AACPZ-R7 Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: 32-VFQFN Exposed Pad, CSP

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Not Verified

Applications:: Power Supplies

Voltage - Input:: 0V ~ 1.55V

Voltage - Supply:: 3.1V ~ 3.6V

Current - Supply:: 20 mA

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 32-LFCSP-VQ (5x5)

ADP1043AACPZ-R7 FAQ

1.How can I place an order for ADP1043AACPZ-R7 through Aetrix?

Please submit a Request for Quotation (RFQ) for ADP1043AACPZ-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 ADP1043AACPZ-R7 reliable?

The price and inventory of ADP1043AACPZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1043AACPZ-R7 is usually 5 days.

3.What payment methods are accepted for ADP1043AACPZ-R7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1043AACPZ-R7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADP1043AACPZ-R7?

ADP1043AACPZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADP1043AACPZ-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 ADP1043AACPZ-R7?

For technical support, including ADP1043AACPZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1043AACPZ-R7 requirements.

6.How does Aetrix verify that ADP1043AACPZ-R7 is sourced from the original manufacturer or authorized distributors?

All ADP1043AACPZ-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 ADP1043AACPZ-R7 meets industry standards.

7.What is the process for return or replacement of ADP1043AACPZ-R7?

All ADP1043AACPZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1043AACPZ-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 ADP1043AACPZ-R7 part is unused and in its original packaging.

Return procedure for ADP1043AACPZ-R7:

1.Submit a request within 90 days.

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

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