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Analog Devices Inc. ADP1071-2ARWZ
- Part No.:
- ADP1071-2ARWZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Power Supply Controllers, Monitors
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADP1071-2ARWZ.pdf
- Description:
- ISOLATED FLYBACK CONTROLLER W/SR
- Quantity:
- Payment:
- Shipping:
Inventory:617
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Product details
Overview
ADP1071-2ARWZ from Analog Devices is a current-mode isolated synchronous flyback controller with integrated iCoupler® isolation and dual 1A MOSFET drivers (primary GATE + secondary SR), supporting forced CCM operation, 50–600 kHz programmable switching frequency, and primary-side VIN up to 60 V. It targets isolated dc-dc power supplies in telecom and industrial equipment where compact size, high efficiency, and reinforced 5 kVRMS isolation are required.
For engineers reviewing the ADP1071-2ARWZ datasheet, ADP1071-2ARWZ pinout, ADP1071-2ARWZ application, or ADP1071-2ARWZ equivalent, key selection criteria include its forced-CCM topology support, integrated 5 kVRMS SOIC_W isolation, dual-side driver capability, precision enable with hysteresis, and OVP/OTP/short-circuit protection - all critical for reliable isolated power design.
Technical Context
The ADP1071-2ARWZ implements fixed-frequency current-mode PWM control with slope compensation and cycle-by-cycle input overcurrent protection. Its integrated iCoupler replaces optocouplers and signal transformers, enabling galvanic isolation between primary and secondary sides without external components.
It features independent primary-side (VIN) and secondary-side (VDD2) supply rails, a precision error amplifier with ±1.25% feedback accuracy over −40°C to +125°C, and synchronized soft-start with programmable timing via external resistor on GATE pin. The device enforces 84% maximum duty cycle and supports frequency synchronization across 100–600 kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Synchronous flyback with forced continuous conduction mode (CCM) |
| Switching Frequency | 50 kHz to 600 kHz, set by RT resistor with ±10% tolerance at each setting |
| Isolation Rating | 5 kVRMS dielectric withstand (1 min), reinforced insulation per UL/VDE/CQC standards |
| Primary Supply Range | VIN = 4.7 V to 60 V; UVLO rising threshold = 4.7 V, hysteresis = 0.19 V |
| Driver Outputs | 1 A primary-side GATE driver (8 V high-level, 17 ns rise time) + 1 A secondary-side SR driver (5 V high-level, 13 ns rise time) |
| Feedback Accuracy | ±1.25% over −40°C to +125°C; internal 1.2 V reference with 76 ppm/°C tempco |
| Protections | Output overvoltage (OVP), overtemperature (155°C shutdown), short-circuit, and cycle-by-cycle input overcurrent |
Pinout & Package
ADP1071-2ARWZ is housed in a 16-lead wide-body SOIC (RW-16) package with creepage/clearance ≥7.6 mm and reinforced insulation rating. Pin layout is identical to ADP1071-1 but excludes MODE pin functionality.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GATE (Pin 1) | Primary-side MOSFET gate driver output | Drives external high-side N-channel MOSFET; resistor to AGND1 sets soft-start time |
| AGND1 (Pin 2) | Primary-side analog ground | Reference for VIN, EN, CS, GATE, and VREG1; must be low-impedance local ground plane |
| VREG1 (Pin 3) | 8 V LDO output for GATE driver | Supplies gate driver; requires ≥1 µF capacitor to AGND1; clamped at 14.3 V max |
| VIN (Pin 4) | Main primary-side input supply | Accepts 4.7 V–60 V; requires 4.7 µF bulk capacitor; enables higher input voltage than ADP1071-1 variant |
| EN (Pin 5) | Precision enable input with hysteresis | Enables controller when >1.2 V; hysteresis = 0.19 V; leakage <1 µA |
| CS (Pin 6) | Current-sense input for primary-side OCP | Detects MOSFET source current; 120 mV threshold; includes 150 ns blanking |
| RT (Pin 7) | Oscillator timing resistor connection | Sets switching frequency from 50–600 kHz; resistor tolerance directly impacts fS accuracy |
| SYNC (Pin 8) | External clock synchronization input | Accepts 100 ns pulses; locks fS to external source within 100–600 kHz range |
| SS2 (Pin 9) | Secondary-side soft-start control | Controls secondary-side startup timing; 20 µA current source during startup |
| FB (Pin 10) | Secondary-side feedback input | Compares output voltage against 1.2 V reference; connects to opto-isolator or divider network |
| COMP (Pin 11) | Error amplifier output for loop compensation | Provides transconductance gain of 250 µS; clamped between 0.7 V and 2.52 V |
| OVP (Pin 12) | Output overvoltage protection input | Triggers hiccup mode if >1.36 V; 36 mV hysteresis; 320 ns total delay including iCoupler |
| VDD2 (Pin 13) | Secondary-side supply input | 4.5 V–36 V input; powers SR driver and secondary-side circuitry; requires 4.7 µF capacitor |
| AGND2 (Pin 14) | Secondary-side analog ground | Reference for VDD2, FB, COMP, OVP, SR; isolated from AGND1 by iCoupler barrier |
| SR (Pin 15) | Secondary-side synchronous rectifier driver output | Drives N-channel SR MOSFET; 5 V high-level, 10 ns fall time, 52 ns dead time after GATE fall |
| VREG2 (Pin 16) | Secondary-side 5 V LDO output | Regulates VDD2 down to 5 V for internal logic; requires 1 µF capacitor to AGND2 |
Key Features
| Feature | Design Value |
|---|---|
| Integrated iCoupler isolation | Eliminates external optocouplers and signal transformers; achieves 5 kVRMS reinforced insulation in SOIC_W |
| Dual 1A MOSFET drivers | Reduces external driver IC count; supports both primary-side switching and secondary-side synchronous rectification |
| Forced CCM operation | Ensures consistent conduction mode across load range-critical for EMI predictability and transformer design in telecom/industrial apps |
| Programmable soft start | Prevents inrush current via GATE pin resistor; open-loop timing scales with switching period (tS) |
| Comprehensive protection suite | Includes OVP hiccup (200 ms), OTP shutdown (155°C), short-circuit recovery, and cycle-by-cycle input OCP with 40 ns comparator delay |
Applications
| Telecom Power Modules | Industrial Isolated DC-DC Converters |
|---|---|
Use Scenario: Providing isolated 12 V/24 V bias rails in 48 V telecom systems with strict EMI and reliability requirements. IC Role / Device Role / Timing Role: Primary-side flyback controller managing PWM, isolation signaling, and synchronous rectification timing. Use Value: Integrated iCoupler eliminates optocoupler aging and drift; forced CCM ensures stable regulation under dynamic load steps typical in base station backplanes. | Use Scenario: Generating isolated auxiliary supplies for PLC I/O modules operating in harsh factory environments. IC Role / Device Role / Timing Role: Isolated power controller delivering regulated outputs while maintaining safety-rated creepage/clearance. Use Value: 5 kVRMS reinforced insulation meets IEC 61010-1 basic + reinforced requirements; thermal shutdown (155°C) protects against ambient overtemperature. |
| PoE Powered Devices | Enterprise Network Switches |
Use Scenario: Converting IEEE 802.3at PoE input (57 V max) to isolated 3.3 V/5 V rails for Ethernet PHYs and microcontrollers. IC Role / Device Role / Timing Role: High-efficiency flyback controller with precise enable sequencing and fast OVP response. Use Value: VIN range up to 60 V accommodates PoE voltage ripple; 120 mV CS threshold enables accurate current limiting for Class 4–5 PD compliance. | Use Scenario: Powering multiple isolated management domains (CPU, PHY, fan control) in multi-Gigabit switches. IC Role / Device Role / Timing Role: Compact isolated controller enabling board-level integration of redundant, independently regulated supplies. Use Value: Dual 1A drivers reduce component count; SYNC pin allows channel-to-channel frequency alignment to minimize beat frequencies in multi-rail systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated flyback controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC28911DR | No integrated isolation; requires external optocoupler or digital isolator; no secondary-side driver; single 0.5 A primary driver | Targeted at cost-sensitive, non-safety-critical AC-DC adapters; lacks reinforced isolation certification | Select when budget constraints outweigh safety certification needs and board space permits external isolation components |
| LT3748EMSE#TRPBF | Uses transformer-based feedback (no integrated isolator); no secondary-side SR driver; 1.2 A primary driver only | Designed for high-voltage industrial flyback designs (>100 V input); lacks integrated iCoupler and dual-driver architecture | Choose when designing for >100 V input or when transformer-coupled feedback is preferred for ultra-high-VIN stability |
Compared with UCC28911DR and LT3748EMSE#TRPBF, ADP1071-2ARWZ delivers system-level integration-replacing optocouplers, secondary drivers, and discrete isolation components-while meeting reinforced insulation standards essential for telecom and industrial safety compliance.
Availability
ADP1071-2ARWZ is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and enterprise networking applications requiring stable component supply, long-term lifecycle support, and certified reinforced isolation.
Supply support for ADP1071-2ARWZ 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 Wilmington, MA.
The ADP1071 product line delivers fully integrated isolated flyback controllers targeting compact, high-reliability power conversion in safety-critical systems-emphasizing reduced bill-of-materials, certified isolation, and synchronous rectification efficiency.
FAQ
What is the maximum input voltage supported by ADP1071-2ARWZ?
ADP1071-2ARWZ supports a primary-side input voltage (VIN) range of 4.7 V to 60 V, with an absolute maximum rating of 66 V. Its UVLO rising threshold is 4.7 V and falling threshold is 4.0 V, providing 0.19 V hysteresis. This extended VIN range makes ADP1071-2ARWZ suitable for 48 V telecom and PoE-powered applications where input ripple and transient surges must be accommodated without dropout.
Does ADP1071-2ARWZ include integrated isolation, and what is its rating?
Yes, ADP1071-2ARWZ integrates Analog Devices' patented iCoupler® technology, providing galvanic isolation between primary and secondary sides. In the RW-16 SOIC_W package, it achieves 5 kVRMS rated dielectric withstand voltage (1 minute), reinforced insulation per UL 1577, VDE V 0884-10, and CQC GB4943.1-2011 standards - eliminating the need for external optocouplers or signal transformers.
How does ADP1071-2ARWZ differ from ADP1071-1ARWZ in operation?
ADP1071-2ARWZ operates exclusively in forced continuous conduction mode (CCM), while ADP1071-1ARWZ supports programmable light-load mode (LLM) or CCM via the MODE pin. ADP1071-2ARWZ also accepts higher primary-side input voltage (up to 60 V vs. ADP1071-1's 12.5 V VREG1 limit) and uses VIN as its main supply instead of VREG1. These differences make ADP1071-2ARWZ ideal for higher-input-voltage isolated dc-dc applications requiring predictable CCM behavior.
Can ADP1071-2ARWZ drive both primary and secondary MOSFETs?
Yes, ADP1071-2ARWZ integrates two independent 1 A MOSFET drivers: a primary-side GATE driver (8 V high-level, 17 ns rise time) and a secondary-side SR driver (5 V high-level, 13 ns rise time). The GATE pin drives the primary-side switch, while the SR pin controls the synchronous rectifier MOSFET - enabling high-efficiency flyback operation without external driver ICs.
What protection features are built into ADP1071-2ARWZ?
ADP1071-2ARWZ includes output overvoltage protection (OVP) with 200 ms hiccup timing, overtemperature shutdown at 155°C (−15°C hysteresis), cycle-by-cycle input overcurrent protection (120 mV CS threshold), short-circuit recovery, and precision enable UVLO with adjustable hysteresis. All protections are hardware-based and operate independently of software or external supervision - ensuring robust fault handling in ADP1071-2ARWZ-based power supplies.
ADP1071-2ARWZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Applications:
- Flyback, Forward Converters
- Voltage - Input:
- 0.4V ~ 3V
- Voltage - Supply:
- 4.7V ~ 60V
- Current - Supply:
- 22 mA
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ADP1071-2ARWZ FAQ
1.How can I place an order for ADP1071-2ARWZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP1071-2ARWZ 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 ADP1071-2ARWZ reliable?
The price and inventory of ADP1071-2ARWZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1071-2ARWZ is usually 5 days.
3.What payment methods are accepted for ADP1071-2ARWZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1071-2ARWZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP1071-2ARWZ?
ADP1071-2ARWZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP1071-2ARWZ 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 ADP1071-2ARWZ?
For technical support, including ADP1071-2ARWZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1071-2ARWZ requirements.
6.How does Aetrix verify that ADP1071-2ARWZ is sourced from the original manufacturer or authorized distributors?
All ADP1071-2ARWZ 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 ADP1071-2ARWZ meets industry standards.
7.What is the process for return or replacement of ADP1071-2ARWZ?
All ADP1071-2ARWZ units undergo pre-shipment inspection (PSI). If there is an issue with ADP1071-2ARWZ, 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 ADP1071-2ARWZ part is unused and in its original packaging.
Return procedure for ADP1071-2ARWZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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