My Inquiry
My Account
Analog Devices Inc. ADUM3221WARZ-RL7
- Part No.:
- ADUM3221WARZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Isolators - Gate Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADUM3221WARZ-RL7.pdf
- Description:
- DGTL ISO 2.5KV 2CH GT DVR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,016
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADUM3221WARZ-RL7 from Analog Devices is an isolated dual-channel MOSFET/IGBT gate driver with 4 A peak output current, 60 ns maximum propagation delay, and 5 ns channel-to-channel matching. It provides galvanic isolation between input logic (3.3 V–5.5 V) and high-side/high-voltage output stages (4.5 V–18 V), enabling robust gate drive in isolated synchronous DC-DC converters and motor inverters.
For engineers reviewing the ADUM3221WARZ-RL7 datasheet, ADUM3221WARZ-RL7 pinout, ADUM3221WARZ-RL7 application, or ADUM3221WARZ-RL7 equivalent, this page delivers verified timing specs, UVLO thresholds, thermal shutdown behavior, isolation ratings, and real-world gate drive capability - all confirmed for the ADUM3221WARZ-RL7 variant with narrow-body SOIC-8 package and automotive qualification.
Technical Context
The ADUM3221WARZ-RL7 integrates iCoupler® monolithic transformer isolation with dual CMOS input receivers and high-current output drivers. Its architecture separates logic-side (VDD1/GND1) and power-side (VDD2/GND2) domains, supporting independent supply rails and true galvanic isolation up to 2500 V rms.
Unlike level-shifted gate drivers, it delivers precise timing control: 60 ns max propagation delay, 5 ns max channel-to-channel matching, and <25 ns rise/fall times into 2 nF loads. The ADUM3221 variant allows simultaneous high-state outputs (no shoot-through protection), distinguishing it from the ADUM3220.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | 4 A per channel - drives high-Q gate capacitances of fast-switching SiC MOSFETs and IGBTs without external buffers. |
| Propagation Delay | ≤60 ns - enables stable operation at switching frequencies up to 1 MHz with deterministic timing margins. |
| Channel Matching | ≤5 ns - ensures balanced dead-time control in half-bridge and full-bridge topologies. |
| VDD2 UVLO Threshold | 4.1 V (rising), 3.2 V (falling) - prevents erratic gate drive during brown-out conditions on the power side. |
| Isolation Rating | 2500 V rms (UL 1577), VIORM = 560 V peak (VDE V 0884-10) - certified for reinforced insulation in industrial and automotive systems. |
| Common-Mode Immunity | >25 kV/μs - maintains signal integrity in noisy power-conversion environments with fast dV/dt transients. |
| Operating Junction Temp | −40°C to +125°C - qualified for under-hood automotive and high-temperature industrial applications. |
Pinout & Package
Narrow-body, RoHS-compliant 8-lead SOIC package (5 mm × 6 mm × 1.6 mm), surface-mount, creepage/clearance optimized for reinforced isolation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDD1 | Input-side supply | 3.0–5.5 V logic power rail; powers isolator core and input receivers. |
| 2 - VIA | Channel A input | CMOS-compatible logic input (VIH = 0.7×VDD1); controls VOA output state. |
| 3 - VIB | Channel B input | CMOS-compatible logic input (VIH = 0.7×VDD1); controls VOB output state. |
| 4 - GND1 | Input-side ground | Reference return for VDD1, VIA, and VIB; electrically isolated from GND2. |
| 5 - GND2 | Output-side ground | Reference return for VDD2, VOA, and VOB; forms isolated power domain with VDD2. |
| 6 - VOB | Channel B output | High-current gate drive output (4 A peak); sinks/sours current to drive MOSFET/IGBT gates. |
| 7 - VOA | Channel A output | High-current gate drive output (4 A peak); independent of VOB, supports concurrent high states. |
| 8 - VDD2 | Output-side supply | 4.5–18 V power rail; sets gate drive voltage level and output swing range. |
Key Features
| Feature | Design Value |
|---|---|
| Galvanic isolation barrier | 2500 V rms withstand, 560 V peak working voltage - eliminates ground loops and enables floating high-side drive. |
| Thermal shutdown protection | Activates >150°C junction temperature - prevents latch-up and permanent damage during overload or poor heatsinking. |
| Default low output state | VOA/VOB remain low during power-up, power-down, or loss of VDD1/VDD2 - avoids unintended device turn-on. |
| High-frequency operation | DC to 1 MHz data rate - supports PWM-based gate control without timing degradation. |
| Automotive qualification | AEC-Q100 Grade 2 (−40°C to +105°C ambient) - validated for engine control, on-board chargers, and traction inverters. |
Applications
| Isolated Synchronous Buck Converter | Three-Phase Motor Inverter |
|---|---|
|
Use Scenario: High-efficiency 48 V–12 V DC-DC conversion in server PSUs and telecom rectifiers using synchronous rectification. IC Role / Device Role / Timing Role: Isolated gate driver for high-side and low-side N-channel MOSFETs; delivers matched timing to minimize shoot-through risk while maintaining >95% efficiency. Use Value: 5 ns channel matching and 60 ns propagation delay enable tight dead-time control, reducing conduction losses and improving thermal performance. |
Use Scenario: Gate driving of six IGBTs in a 3-phase inverter for HVAC compressors and EV auxiliary drives. IC Role / Device Role / Timing Role: Dual-channel isolated driver per half-bridge leg; provides independent, noise-immune control of upper/lower switches across three legs. Use Value: >25 kV/μs CMTI ensures reliable operation despite rapid bus voltage transitions (dV/dt > 50 V/ns) in high-power inverters. |
| Industrial PLC Output Module | On-Board Charger (OBC) Half-Bridge |
|
Use Scenario: Solid-state relay replacement in programmable logic controller output cards requiring functional isolation and long service life. IC Role / Device Role / Timing Role: Isolated gate driver for discrete MOSFETs switching 24 V DC loads; replaces optocoupler+discrete driver solutions. Use Value: 4 A peak current and 125°C junction rating support continuous 2 A load switching with minimal derating in compact enclosures. |
Use Scenario: Secondary-side synchronous rectification in bidirectional OBCs for EVs, operating at 100–300 kHz. IC Role / Device Role / Timing Role: Isolated driver for Si MOSFETs in LLC resonant converter secondary; handles reverse conduction and zero-voltage switching transitions. Use Value: 4.5–18 V VDD2 range accommodates variable output voltages (12–400 V), while default-low behavior prevents shoot-through during soft-start. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel isolated gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM3221BRZ | Same die, wider-body SOIC-8 (5.3 mm width); 100% pin-compatible but larger footprint. | Preferred where board space permits and legacy layout reuse is required. | Select ADUM3221BRZ only if existing PCB uses wide-body SOIC; ADUM3221WARZ-RL7 saves 0.3 mm width and supports higher density layouts. |
| Si8261ACD-IS | Capacitive isolation; 4 A peak, but 75 ns max propagation delay and 10 ns channel skew. | Better suited for cost-sensitive non-automotive applications where timing margin is less critical. | Choose Si8261ACD-IS for lower-cost industrial SMPS; ADUM3221WARZ-RL7 is preferred when <60 ns delay and automotive qualification are mandatory. |
Compared with ADUM3221BRZ, ADUM3221WARZ-RL7 offers identical electrical performance in a narrower SOIC package - reducing PCB area by 12% without sacrificing isolation or drive strength. Against Si8261ACD-IS, it delivers tighter timing control and AEC-Q100 compliance, making it the sole choice for automotive-grade isolated gate drive.
Availability
ADUM3221WARZ-RL7 is available at Aetrix Electronics and suitable for isolated DC-DC converters, motor inverters, and automotive on-board chargers requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ADUM3221WARZ-RL7 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 ADuM322x family was designed specifically for isolated gate driving in high-reliability power conversion systems - combining iCoupler® isolation with robust 4 A output stages to replace optocouplers and discrete driver ICs in demanding environments.
FAQ
What is the UVLO threshold on VDD2 for ADUM3221WARZ-RL7?
The ADUM3221WARZ-RL7 features an ADuM3221A-grade UVLO on VDD2: rising threshold is 4.1 V, falling threshold is 3.2 V, with 0.4 V hysteresis. This ensures clean gate drive enablement during power-up and prevents erratic switching during brown-out events on the output supply rail.
Does ADUM3221WARZ-RL7 include shoot-through protection?
No, ADUM3221WARZ-RL7 does not include internal shoot-through protection. As the ADuM3221 variant, it allows both outputs (VOA and VOB) to be high simultaneously. Shoot-through prevention must be implemented externally via PWM controller logic or gate timing constraints - unlike the ADUM3220 which enforces mutual exclusion.
What is the maximum recommended switching frequency when using ADUM3221WARZ-RL7?
The ADUM3221WARZ-RL7 supports data rates up to 1 MHz, with guaranteed timing parameters (propagation delay, skew, rise/fall time) valid across that range. For reliable gate driving of SiC MOSFETs or IGBTs, practical switching frequencies up to 500 kHz are recommended to maintain timing margin and thermal headroom under full-load conditions.
Is ADUM3221WARZ-RL7 qualified for automotive applications?
Yes, ADUM3221WARZ-RL7 is AEC-Q100 Grade 2 qualified (−40°C to +105°C ambient), with full characterization over −40°C to +125°C junction temperature. It meets automotive requirements for isolation, ESD immunity (IEC 61000-4-x), and long-term reliability in on-board chargers, DC-DC converters, and traction inverter auxiliary circuits.
What package type and dimensions does ADUM3221WARZ-RL7 use?
ADUM3221WARZ-RL7 uses a narrow-body, RoHS-compliant 8-lead SOIC package measuring 5.0 mm × 6.0 mm × 1.6 mm, with 1.27 mm lead pitch. Its creepage and clearance meet reinforced insulation requirements per DIN V VDE V 0884-10, supporting 560 V peak working voltage across the isolation barrier.
ADUM3221WARZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Magnetic Coupling
- Number of Channels:
- 2
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 25kV/µs
- Propagation Delay tpLH / tpHL (Max):
- 60ns, 60ns
- Pulse Width Distortion (Max):
- -
- Rise / Fall Time (Typ):
- 20ns, 20ns
- Current - Output High, Low:
- -
- Current - Peak Output:
- 4A
- Voltage - Forward (Vf) (Typ):
- -
- Current - DC Forward (If) (Max):
- -
- Voltage - Output Supply:
- 4.5V ~ 18V
- Grade:
- Automotive
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
- Approval Agency:
- CSA, UR, VDE
ADUM3221WARZ-RL7 FAQ
1.How can I place an order for ADUM3221WARZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM3221WARZ-RL7 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 ADUM3221WARZ-RL7 reliable?
The price and inventory of ADUM3221WARZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM3221WARZ-RL7 is usually 5 days.
3.What payment methods are accepted for ADUM3221WARZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM3221WARZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM3221WARZ-RL7?
ADUM3221WARZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM3221WARZ-RL7 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 ADUM3221WARZ-RL7?
For technical support, including ADUM3221WARZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM3221WARZ-RL7 requirements.
6.How does Aetrix verify that ADUM3221WARZ-RL7 is sourced from the original manufacturer or authorized distributors?
All ADUM3221WARZ-RL7 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 ADUM3221WARZ-RL7 meets industry standards.
7.What is the process for return or replacement of ADUM3221WARZ-RL7?
All ADUM3221WARZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADUM3221WARZ-RL7, 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 ADUM3221WARZ-RL7 part is unused and in its original packaging.
Return procedure for ADUM3221WARZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADUM3221WARZ-RL7 Tags
.JPG)
-
TLP152(TPL,E
Toshiba Semiconductor and Storage
-
HT0740LG-G
Microchip Technology
-
FOD8314TR2
onsemi
-
1EDI60N12AFXUMA1
Infineon Technologies
-
1EDB7275FXUMA1
Infineon Technologies
-
UCC5350MCDR
Texas Instruments
-
2EDB7259KXUMA1
Infineon Technologies
-
UCC5304DWVR
Texas Instruments
-
SI8261BBC-C-ISR
Skyworks Solutions Inc.
-
HT0440LG-G
Microchip Technology
-
HCPL-0302-500E
Broadcom Limited
-
STGAP2HSCMTR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
