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Analog Devices Inc. ADP1071-1ARWZ-R7
- Part No.:
- ADP1071-1ARWZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Power Supply Controllers, Monitors
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADP1071-1ARWZ-R7.pdf
- Description:
- ISOLATED FLYBACK CONTROLLER W/LI
- Quantity:
- Payment:
- Shipping:
Inventory:3,365
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Product details
Overview
ADP1071-1ARWZ-R7 from Analog Devices is a current-mode isolated synchronous flyback controller with integrated iCoupler® isolation, designed for high-input-voltage isolated DC-DC conversion. It supports programmable light-load mode (LLM) or continuous conduction mode (CCM), delivers 1A primary and 1A secondary MOSFET drive capability, operates from 50 kHz to 600 kHz, and features 5 kVRMS dielectric isolation in SOIC_W package - used in telecom power supplies and PoE-powered devices.
For engineers reviewing the ADP1071-1ARWZ-R7 datasheet, ADP1071-1ARWZ-R7 pinout, ADP1071-1ARWZ-R7 application, or ADP1071-1ARWZ-R7 equivalent, key selection criteria include its 5 kVRMS isolation rating, MODE-pin configurable LLM/CCM operation, 85% duty cycle clamp, integrated error amplifier with ±0.85% feedback accuracy, and compatibility with high-VIN (>60 V) flyback topologies requiring compact, transformerless isolation.
Technical Context
The ADP1071-1ARWZ-R7 implements fixed-frequency current-mode PWM control with slope compensation and cycle-by-cycle input overcurrent protection. Its integrated iCoupler® technology replaces optocouplers and signal transformers, enabling bidirectional signal transmission across the isolation barrier for feedback and gate timing.
It features dual-side regulation architecture: output voltage is sensed on the secondary side, while PWM signals and error amplifier outputs are transmitted via iCoupler® to maintain tight regulation without external isolation components. The MODE pin enables configurable light-load behavior - critical for efficiency optimization in variable-load telecom and industrial applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Synchronous flyback with primary/secondary MOSFET drivers - eliminates diode rectifier losses at heavy loads. |
| Isolation Rating | 5 kVRMS (SOIC_W package) - meets reinforced insulation requirements for telecom and industrial safety standards. |
| Switching Frequency | 50 kHz to 600 kHz (programmable via RT resistor) - enables optimization of magnetics size vs. efficiency. |
| Feedback Accuracy | ±0.85% at −40°C to +85°C - ensures stable output regulation across temperature without external trimming. |
| Duty Cycle Limit | 84% max - prevents transformer saturation and supports wide VIN/VOUT ratios in high-step-down designs. |
| Driver Output Current | 1 A peak source/sink on both primary (GATE) and secondary (SR) sides - directly drives standard logic-level MOSFETs without external buffers. |
| UVLO Hysteresis | 0.19 V on VREG1 - provides clean startup/shutdown sequencing and noise immunity in noisy supply environments. |
Pinout & Package
ADP1071-1ARWZ-R7 is housed in a 16-lead wide-body SOIC (RW-16) package with creepage/clearance ≥7.6 mm and 5 kVRMS isolation rating. Pin functions are electrically and thermally optimized for isolated flyback layout, with AGND1 and AGND2 separated to maintain isolation integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GATE (Pin 1) | Primary-side MOSFET driver output | 1 A capable gate driver with 17 ns rise/15 ns fall time into 2.2 nF - supports fast-switching Si and GaN FETs. |
| AGND1 (Pin 2) | Primary-side analog ground reference | Separate ground return for VREG1, EN, CS, and MODE - prevents noise coupling into control loop. |
| VREG1 (Pin 3) | 8 V LDO output for GATE driver | Internally regulated supply with 13.5–15.2 V clamp - powers gate driver independently of input rail. |
| MODE (Pin 4) | Light-load mode configuration input | Selects LLM threshold or forces CCM via resistor-to-ground or logic-high - enables efficiency tuning at partial load. |
| EN (Pin 5) | Precision enable with hysteresis | 1.14–1.26 V threshold with 3 µA hysteresis current - allows clean system-level power sequencing. |
| CS (Pin 6) | Primary current sense input | 120 mV overcurrent threshold with 150 ns blanking - enables accurate cycle-by-cycle current limiting. |
| VDD2 (Pin 7) | Secondary-side supply input | 4.5–36 V operating range - powers SR driver and secondary-side circuitry from auxiliary winding or output. |
| AGND2 (Pin 8) | Secondary-side analog ground | Isolated ground reference for VDD2, FB, OVP, and SR - maintains galvanic separation across iCoupler® barrier. |
| FB (Pin 9) | Secondary-side feedback input | Connects to opto-coupler replacement network - senses output voltage via resistive divider referenced to AGND2. |
| COMP (Pin 10) | Error amplifier output | Transconductance = 250 µS, clamped 0.7–2.52 V - interfaces with iCoupler® input to transmit correction signal across isolation. |
| OVP (Pin 11) | Output overvoltage protection input | 1.36 V threshold with 36 mV hysteresis - triggers hiccup-mode shutdown within 320 ns (including iCoupler delay). |
| RT (Pin 12) | Frequency setting resistor connection | Configures fSW from 50–600 kHz via external resistor - enables EMI optimization and transformer design flexibility. |
| SYNC (Pin 13) | External clock synchronization input | Accepts 100–600 kHz TTL-compatible signal - allows multi-phase interleaving or EMI reduction in dense systems. |
| SS2 (Pin 14) | Secondary soft-start discharge control | 20 µA charge / 30 µA discharge current - coordinates secondary-side startup with primary soft-start timing. |
| SR (Pin 15) | Secondary-side synchronous rectifier driver | 1 A peak drive with 13 ns rise/10 ns fall - controls external SR FET with 52 ns dead time after GATE turn-off. |
| VREG2 (Pin 16) | Secondary-side 5 V LDO output | Supplies internal SR driver and sensing circuits - decoupled by 1 µF capacitor to AGND2. |
Key Features
| Feature | Design Value |
|---|---|
| iCoupler® integration | Eliminates optocouplers and signal transformers - reduces BOM count, improves long-term reliability, and enables precise timing across isolation barrier. |
| Programmable LLM/CCM | MODE pin selects between light-load burst mode (for <10% load efficiency) or forced CCM (for low-noise, constant-frequency operation). |
| Dual independent MOSFET drivers | 1 A primary GATE + 1 A secondary SR drivers - supports high-efficiency synchronous rectification without external gate drivers. |
| Integrated error amplifier | 250 µS transconductance, ±0.85% VFB accuracy, and 1 MHz GBW - enables stable Type II/III compensation with minimal external components. |
| Comprehensive protection suite | Includes OCP (120 mV CS threshold), OVP (1.36 V), OTP (155°C), UVLO (4.7 V rising), and soft-stop - ensures robust field operation. |
Applications
| Telecom Power Supply | PoE Powered Device |
|---|---|
Use Scenario: Isolated 48 V input to 12 V/5 V output DC-DC conversion in base station remote radio units. IC Role / Device Role / Timing Role: Primary-side PWM controller and secondary-side synchronous rectifier driver with iCoupler®-based feedback loop closure. Use Value: 5 kVRMS isolation meets IEC 60950-1 reinforced insulation requirements while enabling >92% efficiency at full load via synchronous rectification. | Use Scenario: Power sourcing equipment (PSE) interface powering IEEE 802.3af/at PDs with isolated bias generation. IC Role / Device Role / Timing Role: Flyback controller managing isolated auxiliary supply for PD PHY and microcontroller, with MODE pin configured for LLM during standby. Use Value: Light-load mode reduces no-load input power to <150 mW - critical for meeting PoE Class 5 energy budget constraints. |
| Industrial Sensor Node | Enterprise Switch PSU |
Use Scenario: 24–60 V DC input powering isolated 3.3 V/5 V rails for analog sensor front-ends and wireless transceivers. IC Role / Device Role / Timing Role: High-VIN flyback controller with programmable frequency (300 kHz) and slope compensation for stable operation under wide line/load variation. Use Value: 85% duty cycle clamp and 600 kHz max switching enable compact magnetics suitable for space-constrained DIN-rail modules. | Use Scenario: Multi-output isolated DC-DC stage in 1U rack-mount switch providing 12 V, 5 V, and 3.3 V rails. IC Role / Device Role / Timing Role: Primary controller coordinating multiple flyback channels via SYNC pin for interleaved operation and reduced input ripple. Use Value: Synchronization capability enables phase-shifted operation across parallel ADP1071-1ARWZ-R7 controllers - cuts input capacitor RMS current by 30%. |
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 | Integrated 700 V MOSFET; no secondary-side driver; 3.75 kVRMS isolation (SOIC-7) | Targeted at low-power AC-DC adapters (<10 W); lacks synchronous rectification support | Choose UCC28911DR only for cost-sensitive, low-power AC-DC where secondary-side control is unnecessary. |
| LT3748IMS#TRPBF | No integrated isolation; requires external optocoupler or digital isolator; 105°C max junction temp | Designed for high-temp industrial environments but adds component count and timing uncertainty | Choose LT3748IMS#TRPBF when existing designs already use optocouplers and require extended temperature range beyond 125°C. |
Compared with UCC28911DR and LT3748IMS#TRPBF, ADP1071-1ARWZ-R7 uniquely integrates both primary and secondary MOSFET drivers plus iCoupler® isolation - delivering higher efficiency, tighter regulation, and lower system-level BOM cost in mid-power (10–60 W) isolated DC-DC applications.
Availability
ADP1071-1ARWZ-R7 is available at Aetrix Electronics and suitable for telecom infrastructure, PoE-powered devices, and industrial sensor nodes requiring stable component supply, long-lifecycle availability, and certified 5 kVRMS isolation.
Supply support for ADP1071-1ARWZ-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 Wilmington, MA.
The ADP1071-1/ADP1071-2 product line was developed to replace optocoupler-based feedback in isolated flyback converters - targeting high-reliability telecom, industrial, and enterprise power systems needing compact, efficient, and safety-certified solutions.
FAQ
What is the isolation voltage rating of the ADP1071-1ARWZ-R7?
The ADP1071-1ARWZ-R7 features a 5 kVRMS rated dielectric isolation voltage, verified per UL 1577 and DIN VDE V 0884-10 standards. This rating applies specifically to the RW-16 wide-body SOIC package and supports reinforced insulation for telecom and industrial applications up to 565 VPEAK working voltage under bipolar AC waveforms.
Does the ADP1071-1ARWZ-R7 support synchronous rectification on the secondary side?
Yes, the ADP1071-1ARWZ-R7 integrates a dedicated 1 A secondary-side MOSFET driver (SR pin) with programmable dead time (52 ns after GATE turn-off). It supports synchronous rectification in flyback topologies, improving efficiency by replacing lossy diode rectifiers - especially beneficial above 20% load in 12–24 V output designs.
How does the MODE pin function on the ADP1071-1ARWZ-R7?
The MODE pin on the ADP1071-1ARWZ-R7 configures light-load behavior: grounding it forces CCM, applying >2.5 V enables burst-mode LLM, and connecting a resistor sets a precise LLM threshold. This pin is exclusive to the ADP1071-1 variant - the ADP1071-2 operates only in forced CCM and omits this pin.
Can the ADP1071-1ARWZ-R7 be synchronized to an external clock?
Yes, the ADP1071-1ARWZ-R7 supports frequency synchronization via the SYNC pin, accepting TTL-compatible signals from 100 kHz to 600 kHz. It locks within 7 cycles and maintains phase alignment - enabling interleaved operation in multi-channel PSUs to reduce input/output ripple and EMI.
What protection features are built into the ADP1071-1ARWZ-R7?
The ADP1071-1ARWZ-R7 includes short-circuit protection with hiccup mode, output overvoltage protection (OVP) with 1.36 V threshold and 320 ns total response time (including iCoupler® delay), overtemperature shutdown at 155°C, precision enable UVLO with hysteresis, and cycle-by-cycle input overcurrent detection using the CS pin with 120 mV threshold.
ADP1071-1ARWZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Applications:
- Flyback, Forward Converters
- Voltage - Input:
- 0.4V ~ 3V
- Voltage - Supply:
- 4.7V ~ 12.5V
- Current - Supply:
- 16.6 mA
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ADP1071-1ARWZ-R7 FAQ
1.How can I place an order for ADP1071-1ARWZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP1071-1ARWZ-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 ADP1071-1ARWZ-R7 reliable?
The price and inventory of ADP1071-1ARWZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1071-1ARWZ-R7 is usually 5 days.
3.What payment methods are accepted for ADP1071-1ARWZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1071-1ARWZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP1071-1ARWZ-R7?
ADP1071-1ARWZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP1071-1ARWZ-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 ADP1071-1ARWZ-R7?
For technical support, including ADP1071-1ARWZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1071-1ARWZ-R7 requirements.
6.How does Aetrix verify that ADP1071-1ARWZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADP1071-1ARWZ-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 ADP1071-1ARWZ-R7 meets industry standards.
7.What is the process for return or replacement of ADP1071-1ARWZ-R7?
All ADP1071-1ARWZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1071-1ARWZ-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 ADP1071-1ARWZ-R7 part is unused and in its original packaging.
Return procedure for ADP1071-1ARWZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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