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Analog Devices Inc. ADUM4221BRIZ
- Part No.:
- ADUM4221BRIZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Gate Drivers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADUM4221BRIZ.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,751
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Product details
Overview
ADUM4221BRIZ from Analog Devices is an isolated half-bridge gate driver IC with independent high-side and low-side outputs, 4 A peak output current, adjustable dead time (48–2831 ns), and 5700 Vrms reinforced isolation in a wide-body 16-lead SOIC_IC package. It drives IGBTs and SiC/GaN MOSFETs in high-voltage switching power supplies requiring precise timing and shoot-through protection.
For engineers reviewing the ADUM4221BRIZ datasheet, ADUM4221BRIZ pinout, ADUM4221BRIZ application, or ADUM4221BRIZ equivalent, this page delivers verified specifications, validated pin functions, confirmed thermal and UVLO behavior, and real-world GaN/SiC gate drive use cases - all grounded in Analog Devices' Rev. 0 datasheet and official safety certifications.
Technical Context
The ADUM4221BRIZ uses iCoupler® monolithic transformer technology to achieve galvanic isolation between logic input (VDD1/GND1) and dual output domains (VDDA/GNDA and VDDB/GNDB), eliminating level-shifting complexity. Its OOK-based encoding ensures fail-safe low-default output during input power loss.
It integrates independent UVLO on both output rails (Grade B: 7.5 V positive-going threshold), thermal shutdown at 155°C, and programmable dead time via external resistor (10 kΩ–500 kΩ) between DT and GND1 - enabling precise control of high-side/low-side overlap in half-bridge topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5700 Vrms for 1 minute; VIORM = 849 Vpeak per VDE V 0884-11 - enables reinforced insulation in 400–600 Vrms mains-connected inverters and SMPS. |
| Peak Output Current | 4 A per channel - sufficient to drive high-Qg SiC MOSFETs (e.g., 100 nC gate charge) with <25 ns rise time under 15 V supply. |
| Propagation Delay | Max 44 ns (falling edge); skew ≤22 ns - supports >10 MHz PWM switching with tight channel-to-channel matching (≤10 ns). |
| Input Logic Range | 2.5 V to 6.5 V CMOS-compatible - interfaces directly with 3.3 V microcontrollers and 5 V FPGAs without level shifters. |
| Output Supply Range | 4.5 V to 35 V per rail - accommodates 12 V, 15 V, and 24 V gate bias for IGBTs and wide-VGS SiC devices. |
| Common-Mode Immunity | ±150 kV/µs - maintains signal integrity in noisy motor drive and industrial inverter environments with fast dV/dt transients. |
| Thermal Limit | TSD activation at 155°C with 30°C hysteresis - forces both outputs low to protect downstream power switches during overtemperature events. |
Pinout & Package
ADUM4221BRIZ is housed in a 16-lead wide-body SOIC_IC package (RI-16-2) with 8.3 mm creepage/clearance, optimized for reinforced isolation in high-voltage applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIA, VIB | Logic inputs A and B | CMOS-compatible control signals for high-side and low-side outputs; accept 2.5–6.5 V logic levels. |
| DISABLE | Global disable input | Active-high signal forcing both VOA and VOB low - used for system fault shutdown or soft-start sequencing. |
| DT | Dead time adjustment | Connects to GND1 via external resistor (10–500 kΩ) to set inter-channel dead time from 48 ns to 2831 ns. |
| VDD1, GND1 | Input-side power domain | Supplies isolator logic side; VDD1 pins 3 and 8 are internally bonded - both must be connected for robust operation. |
| VDDA, GNDA, VOA | High-side output domain | Independent power, ground, and output for driving high-side switch gate; referenced to GNDA, not GND1. |
| VDDB, GNDB, VOB | Low-side output domain | Independent power, ground, and output for low-side switch; fully isolated from high-side and input domains. |
| NC (Pins 7,12,13) | No-connect terminals | Internally unconnected - must remain floating; PCB pads may be omitted or left unconnected per Analog Devices layout guidance. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable dead time | Programmable 48–2831 ns via single external resistor - eliminates need for external timing circuitry and enables optimization for specific SiC/GaN device Qg and layout parasitics. |
| iCoupler® isolation | Monolithic transformer-based barrier with 1013 Ω resistance and 2.2 pF capacitance - provides lower EMI and higher CMTI than optocoupler-based alternatives. |
| Grade B UVLO | VDDA/VDDB positive-going UVLO threshold = 7.5 V - prevents erratic switching during brown-out conditions while supporting 12 V gate bias rails. |
| Fail-safe default state | Outputs go low when VDD1 is unpowered or DISABLE is asserted - ensures power device remains off during initialization or fault conditions. |
| High junction temperature rating | Operates up to +125°C ambient with derated power - suitable for enclosed industrial inverters and high-density power modules. |
Applications
| Motor Drive Half-Bridge | Solar Inverter DC-AC Stage |
|---|---|
Use Scenario: Driving high-side and low-side SiC MOSFETs in a 3-phase inverter for HVAC compressors operating at 20 kHz PWM frequency. IC Role / Device Role / Timing Role: Isolated gate driver providing independent, synchronized, and dead-time-controlled outputs to prevent shoot-through during fast dV/dt transitions. Use Value: 44 ns max propagation delay and ≤10 ns channel-to-channel matching ensure precise phase alignment across all three legs, minimizing torque ripple and conduction losses. |
Use Scenario: Controlling IGBT half-bridges in string-level solar inverters exposed to rapid irradiance changes and grid voltage transients. IC Role / Device Role / Timing Role: Reinforced-isolation gate driver delivering 4 A peak current to rapidly charge/discharge IGBT gates while rejecting ±150 kV/µs common-mode noise from PV array grounding loops. Use Value: 5700 Vrms isolation and 849 Vpeak VIORM meet IEC 62109 and UL 1741 requirements for photovoltaic system safety certification. |
| GaN-Based Telecom PSU | Industrial UPS H-Bridge |
Use Scenario: Driving enhancement-mode GaN HEMTs in a 1 MHz LLC resonant converter for 48 V server power distribution. IC Role / Device Role / Timing Role: High-speed isolated driver enabling sub-50 ns dead time control to maximize efficiency while avoiding cross-conduction in ultra-fast GaN switches. Use Value: Adjustable DT pin allows fine-tuning dead time to match exact GaN device turn-on/turn-off delays, reducing switching losses by up to 12% vs. fixed-delay drivers. |
Use Scenario: Gate-driving 1200 V IGBTs in a double-conversion UPS output stage where reliability under sustained overload is critical. IC Role / Device Role / Timing Role: Thermally robust isolated driver with integrated TSD and dual-rail UVLO, ensuring safe shutdown during bus overvoltage or heatsink overheating. Use Value: 155°C thermal shutdown with 30°C hysteresis prevents latch-up and enables automatic recovery after transient overloads - extending IGBT lifetime in mission-critical backup systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated half-bridge gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si8273BD-IS | Capacitive isolation; 4 A sink/source; fixed 100 ns dead time; 5 kVrms isolation; no adjustable DT pin. | Lacks programmable dead time - requires external logic or MCU compensation for SiC/GaN optimization. | Select when board space is constrained and fixed dead time suffices; avoid where dynamic dead time tuning is needed for varying load conditions. |
| ISO5852SMDWR | Reinforced isolation (5.7 kVrms); 2.5 A peak; integrated Miller clamp; 100 ns typical propagation delay; no DT pin. | Lower peak current limits use with high-Qg SiC devices; Miller clamp improves noise immunity but adds complexity. | Prefer for IGBTs with moderate gate charge; not recommended for >60 nC GaN HEMTs requiring 4 A drive strength. |
Compared with Si8273BD-IS and ISO5852SMDWR, ADUM4221BRIZ uniquely combines 4 A drive strength, adjustable dead time, and 5700 Vrms reinforced isolation in a single SOIC_IC package - making it the only option among the three that supports both high-current GaN switching and field-tunable timing without external components.
Availability
ADUM4221BRIZ is available at Aetrix Electronics and suitable for switching power supplies, industrial inverters, and GaN/SiC gate drive applications requiring stable component supply, long-term lifecycle support, and certified reinforced isolation.
Supply support for ADUM4221BRIZ 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, with R&D centers worldwide.
The ADUM4221BRIZ belongs to the iCoupler® isolated gate driver product line, designed specifically for high-reliability, high-efficiency power conversion systems using wide-bandgap transistors and demanding industrial isolation standards.
FAQ
What is the isolation voltage rating of the ADUM4221BRIZ and which safety standards does it meet?
The ADUM4221BRIZ is rated for 5700 Vrms isolation for 1 minute and complies with DIN V VDE V 0884-11 (reinforced insulation), UL 1577 (pending recognition), and CSA Component Acceptance Notice 5A (pending). Its VIORM is 849 Vpeak, supporting basic insulation up to 900 Vpeak and reinforced insulation up to 849 Vpeak per IEC 62368-1. These ratings are verified per Analog Devices' Rev. 0 datasheet and apply directly to the ADUM4221BRIZ variant.
How is dead time adjusted on the ADUM4221BRIZ, and what range is supported?
Dead time on the ADUM4221BRIZ is set by connecting an external resistor between the DT pin (Pin 6) and GND1. With resistor values from 10 kΩ to 500 kΩ, the resulting dead time ranges from 48 ns to 2831 ns - verified in Table 1 of the ADUM4221BRIZ datasheet under "Adjustable Dead Time" test conditions. This adjustment occurs entirely on the isolated secondary side, requiring no coupling across the barrier.
Does the ADUM4221BRIZ support both IGBTs and wide-bandgap devices like SiC and GaN?
Yes, the ADUM4221BRIZ is explicitly qualified for IGBT, SiC MOSFET, and GaN HEMT gate drive per its Applications section and Figure 21 (peak current vs. output supply voltage). Its 4 A peak output current, <2 Ω RDS(ON), and 44 ns max propagation delay enable direct drive of high-Qg wide-bandgap devices - confirmed in Analog Devices' ADUM4221BRIZ datasheet Rev. 0, Page 1.
What are the UVLO thresholds for the ADUM4221BRIZ output supplies, and how do they differ by grade?
The ADUM4221BRIZ uses Grade B UVLO: VDDA and VDDB positive-going threshold is 7.5 V maximum, with 0.2 V hysteresis. This is distinct from Grade A (4.5 V max) and Grade C (11.6 V max), and is specified in Table 1 of the ADUM4221BRIZ datasheet. The part number suffix "BRIZ" corresponds to Grade B, as confirmed in Analog Devices' official ordering guide.
What is the thermal shutdown behavior of the ADUM4221BRIZ, and how does it affect system safety?
The ADUM4221BRIZ activates thermal shutdown (TSD) at 155°C junction temperature, forcing both VOA and VOB outputs low until temperature falls by 30°C hysteresis. This fail-safe action protects downstream power switches from thermal runaway - a behavior documented in the General Description and Electrical Characteristics sections of the ADUM4221BRIZ datasheet Rev. 0 and integral to its safety-certified operation.
ADUM4221BRIZ 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
- Driven Configuration:
- Half-Bridge
- Channel Type:
- Synchronous
- Number of Drivers:
- 2
- Gate Type:
- IGBT
- Voltage - Supply:
- 2.5V ~ 6.5V
- Logic Voltage - VIL, VIH:
- 1.5V, 3.5V
- Current - Peak Output (Source, Sink):
- 4A, 6A
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- -
- Rise / Fall Time (Typ):
- 25ns, 30ns
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ADUM4221BRIZ FAQ
1.How can I place an order for ADUM4221BRIZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUM4221BRIZ 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 ADUM4221BRIZ reliable?
The price and inventory of ADUM4221BRIZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUM4221BRIZ is usually 5 days.
3.What payment methods are accepted for ADUM4221BRIZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUM4221BRIZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUM4221BRIZ?
ADUM4221BRIZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUM4221BRIZ 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 ADUM4221BRIZ?
For technical support, including ADUM4221BRIZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUM4221BRIZ requirements.
6.How does Aetrix verify that ADUM4221BRIZ is sourced from the original manufacturer or authorized distributors?
All ADUM4221BRIZ 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 ADUM4221BRIZ meets industry standards.
7.What is the process for return or replacement of ADUM4221BRIZ?
All ADUM4221BRIZ units undergo pre-shipment inspection (PSI). If there is an issue with ADUM4221BRIZ, 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 ADUM4221BRIZ part is unused and in its original packaging.
Return procedure for ADUM4221BRIZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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