Analog Devices Inc. ADP1074ACCZ

Overview

ADP1074ACCZ from Analog Devices is an isolated, synchronous forward controller with integrated iCoupler® dielectric isolation and active clamp topology support. It delivers primary-side MOSFET driving (1 A), secondary-side synchronous rectifier driving (1 A), <1% accurate voltage reference, programmable 50–600 kHz switching frequency, and reinforced insulation up to 5 kV_rms in wide-body SOIC_W package - enabling compact, high-efficiency isolated DC/DC power supplies for telecom and industrial base stations.

For engineers reviewing the ADP1074ACCZ datasheet, ADP1074ACCZ pinout, ADP1074ACCZ application, or ADP1074ACCZ equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative controllers with documented functional differences, and supply-chain support details specific to the ADP1074ACCZ variant in 24-lead SOIC_W packaging.

Technical Context

The ADP1074ACCZ implements current-mode control in an active-clamp forward topology with bidirectional signal transmission across isolation via proprietary iCoupler technology - eliminating optocouplers and external transformers. Its dual-domain architecture separates primary-side functions (NGATE/PGATE drive, VIN sensing, RT-based frequency setting) from secondary-side functions (FB/OVP feedback, SR1/SR2 timing, PGOOD flagging).

It integrates two independent 1 A gate drivers per domain, a transconductance error amplifier with 250 µA/V gm and 1.2 V ±1.25% reference, cycle-by-cycle input overcurrent protection at 120 mV CS threshold, and programmable light-load mode using MODE pin biasing - all operating across −40°C to +125°C junction temperature with AEC-Q100 qualification.

Key Specifications

Pinout & Package

ADP1074ACCZ is housed in a 24-lead wide-body SOIC_W package (RW-24), offering 7.6 mm minimum creepage and clearance, 5 kV_rms isolation, and θ_JA = 65.4°C/W. Pin numbering follows standard SOIC_W orientation (pin 1 marked, counterclockwise).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar isolated forward controller applications.

Compared with UCC28911DR and LM5036MTX/NOPB, the ADP1074ACCZ uniquely integrates 5 kV_rms iCoupler isolation, dual-domain gate drivers, and reinforced safety certification - eliminating six external components (optocoupler, two drivers, error amp, reference, OVP comparator) while enabling smaller PCB area and faster time-to-market for telecom and industrial isolated supplies.

Availability

ADP1074ACCZ is available at Aetrix Electronics and suitable for telecom intermediate bus generation, industrial base station RF power supplies, and PoE-powered device applications requiring stable component supply, long-term lifecycle assurance, and certified reinforced isolation.

Supply support for ADP1074ACCZ 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 precision instrumentation, industrial automation, communications, and automotive markets.

The ADP1074ACCZ belongs to Analog Devices' isolated power controller product line, designed specifically to replace optocoupler-based feedback loops in high-reliability isolated DC/DC converters - targeting telecom infrastructure, industrial power modules, and medical-grade power systems.

FAQ

What is the isolation rating of the ADP1074ACCZ and how is it certified?

The ADP1074ACCZ features 5 kV_rms isolation for 1 minute per UL 1577, with VIORM = 849 V_peak and reinforced insulation certification per DIN V VDE V 0884-10:2006-12. It carries pending UL, CSA, VDE, and CQC approvals for wide-body SOIC_W packaging. These ratings are validated through 100% production testing at ≥6000 V_rms, ensuring compliance in telecom and industrial safety-critical applications where the ADP1074ACCZ is deployed.

Does the ADP1074ACCZ support active-clamp forward topology out of the box?

Yes, the ADP1074ACCZ is explicitly designed as a current-mode controller for active-clamp forward topology. It provides dedicated PGATE output for the clamp MOSFET, NGATE for the main power switch, and internal timing logic to coordinate ZVS operation - all without external compensation or configuration. The ADP1074ACCZ datasheet confirms this topology support in both General Description and Applications sections, with typical circuits illustrating full implementation.

How does the ADP1074ACCZ handle secondary-side feedback without optocouplers?

The ADP1074ACCZ uses Analog Devices' patented iCoupler® technology to transmit FB, OVP, and PGOOD signals across the isolation barrier digitally - eliminating optocouplers entirely. Feedback voltage is sensed differentially on the secondary side, converted to a digital pulse stream, and reconstructed on the primary side with <1% error. This method ensures stable loop response, immunity to CMTI noise, and lifetime reliability unattainable with LED-based optocouplers - a core advantage of the ADP1074ACCZ.

What are the key thermal characteristics of the ADP1074ACCZ in SOIC_W package?

The ADP1074ACCZ in 24-lead wide-body SOIC_W (RW-24) package has θ_JA = 65.4°C/W and θ_JC = 43.8°C/W per JEDEC JESD-51 simulation. Its maximum junction temperature is 150°C, with thermal shutdown activating at 155°C and 15°C hysteresis. These values assume proper PCB copper pour and thermal vias under the exposed pad - critical for maintaining performance in continuous 125°C ambient environments where the ADP1074ACCZ is commonly used.

Can the ADP1074ACCZ operate with precharged output capacitors?

Yes, the ADP1074ACCZ supports smooth soft start from precharged loads via independent SS1 (primary) and SS2 (secondary) pins. During handover, the secondary-side SS2 capacitor charges post-regulation, allowing controlled ramp-up even when output is already biased - essential for PoE-PD, hot-swap, and redundant power systems. This behavior is explicitly documented in the ADP1074ACCZ datasheet's Soft Start Procedure section and verified in Typical Application Circuits.