Analog Devices Inc. ADP1074ACCZ-RL

Overview

ADP1074ACCZ-RL from Analog Devices is a current-mode, isolated synchronous forward controller with integrated iCoupler® dielectric isolation and active clamp topology support. It delivers up to 60 V primary input voltage handling, 50–600 kHz programmable switching frequency, and dual 1 A MOSFET drivers (primary NGATE/PGATE and secondary SR1/SR2) for high-efficiency telecom and industrial dc-dc power conversion.

For engineers reviewing the ADP1074ACCZ-RL datasheet, ADP1074ACCZ-RL pinout, ADP1074ACCZ-RL application, or ADP1074ACCZ-RL equivalent, key selection considerations include its 5 kV reinforced isolation rating (wide-body SOIC_W), precision 1.2 V ±1.25% feedback reference, cycle-by-cycle input overcurrent protection at 120 mV CS threshold, and programmable light-load mode via MODE pin.

Technical Context

The ADP1074ACCZ-RL implements a fixed-frequency current-mode control architecture optimized for active-clamp forward converters, with iCoupler technology enabling galvanic signal transfer across isolation barrier without optocouplers or pulse transformers. Its primary-side control loop uses slope-compensated peak current sensing via CS pin, while secondary-side regulation relies on differential FB/OVP sensing referenced to AGND2.

It integrates dual independent gate drivers: NGATE/PGATE (8 V output, 1 A peak, <20 ns rise/fall) on primary side, and SR1/SR2 (5 V output, 1 A peak, <15 ns rise/fall) on secondary side. Timing coordination-including PGATE-to-SR2 dead time (programmable via RDT resistor), iCoupler propagation delay (600 ns for COMP, 35 ns for SR1 rising edge), and soft-start sequencing-is tightly controlled to ensure safe ZVS/ZCS transitions and prevent shoot-through.

Key Specifications

Pinout & Package

ADP1074ACCZ-RL is packaged in a 24-lead wide-body SOIC (SOIC_W, RW-24) with creepage/clearance ≥7.6 mm and reinforced insulation rated for 5 kV rms. The package supports surface-mount assembly and meets IPC/JEDEC J-STD-020 moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UCC28911DR and LT3748EMSE#TRPBF, ADP1074ACCZ-RL uniquely integrates iCoupler isolation, active-clamp timing, and dual-side synchronous rectifier control - reducing component count by ≥4 devices and enabling higher efficiency (>94%) in forward-based 30–200 W telecom/industrial supplies.

Availability

ADP1074ACCZ-RL is available at Aetrix Electronics and suitable for telecom base stations, industrial PLCs, and enterprise networking equipment requiring stable component supply, long-lifecycle assurance, and regulatory-compliant reinforced isolation.

Supply support for ADP1074ACCZ-RL 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 ADP1074ACCZ-RL belongs to Analog Devices' isolated power controller product line, designed specifically for high-efficiency, high-reliability isolated dc-dc conversion in space-constrained, safety-critical applications.

FAQ

What is the isolation voltage rating of the ADP1074ACCZ-RL?

The ADP1074ACCZ-RL features 5 kV rms (1 minute) dielectric isolation with VIORM = 849 V peak, certified per UL 1577, VDE V 0884-10, and CSA Component Acceptance Notice 5A. This rating applies specifically to the wide-body SOIC_W package used in the ADP1074ACCZ-RL variant and supports reinforced insulation for industrial and telecom applications.

Does the ADP1074ACCZ-RL support synchronous rectification on both primary and secondary sides?

The ADP1074ACCZ-RL integrates synchronous rectifier drivers SR1 and SR2 on the secondary side only, each delivering 1 A peak drive at 5 V. Primary-side switching uses NGATE (main FET) and PGATE (active clamp FET); neither is configured as a synchronous rectifier driver. The ADP1074ACCZ-RL's architecture is optimized for forward topology with secondary-side synchronous rectification.

How is the switching frequency programmed on the ADP1074ACCZ-RL?

The ADP1074ACCZ-RL switching frequency is set by connecting two series resistors between RT and AGND1, with total resistance determining frequency: 480 kΩ yields ~50 kHz, 40 kΩ yields ~600 kHz. The RT pin also interfaces with DMAX for maximum duty cycle configuration. Frequency synchronization is supported via the SYNC pin, accepting external clocks within ±10% of the RT-set frequency.

What protection features does the ADP1074ACCZ-RL include?

The ADP1074ACCZ-RL includes cycle-by-cycle input overcurrent protection (120 mV CS threshold), output overvoltage protection (1.36 V OVP threshold with 36 mV hysteresis), overtemperature shutdown (155°C), precision enable UVLO (4.7 V rising, 4.0 V falling), and hiccup-mode fault recovery. All protections are hardware-based and operate independently of microcontroller intervention.

Can the ADP1074ACCZ-RL be used in automotive applications?

Yes - the ADP1074ACCZ-RL is AEC-Q100 qualified for automotive applications, operating across −40°C to +125°C junction temperature. Its 5 kV isolation, robust protection suite, and iCoupler reliability make it suitable for isolated power supplies in ADAS domain controllers, infotainment systems, and vehicle networking gateways requiring reinforced insulation.