ADUM4221ARWZ-RL7 - Isolated Half-Bridge Gate Driver | Analog Devices
MPN: ADUM4221ARWZ-RL7 ✓ פעילADUM4221ARWZ-RL7 סקירה
An isolated gate driver is a specialized integrated circuit that provides the necessary voltage and current to switch power transistors while maintaining galvanic isolation between the control side and the power stage. This isolation is critical for safety and noise immunity in applications such as motor drives, switch-mode power supplies, and inverters. The ADUM4221 integrates isolation and drive functions into a single package, eliminating the need for external isolation components like pulse transformers.
Key features of the ADUM4221 include 4 A peak output current, adjustable dead time, and a wide supply voltage range. The device supports both high-side and low-side outputs with independent control, enabling flexible half-bridge configurations. Its propagation delay is typically 60 ns, and it offers a common-mode transient immunity of 100 kV/us, ensuring reliable operation in noisy environments.
Technically, the ADUM4221 uses Analog Devices' iCoupler technology, which combines high-speed CMOS and monolithic transformer isolation. This architecture provides superior performance compared to traditional optocoupler-based solutions, including lower power consumption, higher data rates, and better timing accuracy. The device also features under-voltage lockout (UVLO) on both the input and output sides, protecting against insufficient supply voltages.
Typical applications include isolated switch-mode power supplies, motor drives, solar inverters, and industrial automation. The ADUM4221 is particularly suited for half-bridge and full-bridge topologies where high-side and low-side drivers are required. Its adjustable dead time allows designers to optimize switching performance and prevent shoot-through currents.
When designing with the ADUM4221, it is important to ensure proper PCB layout to minimize parasitic inductance and maintain signal integrity. The device's high common-mode transient immunity requires careful attention to grounding and isolation barriers. Additionally, the dead time should be set appropriately based on the switching characteristics of the power transistors to avoid cross-conduction.
חלופות תחליף ישיר עבור ADUM4221ARWZ-RL7 — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם ADUM4221ARWZ-RL7 (אותו גורם צורה וטביעת רגל) — שונים ב Package, Isolation Voltage, Technology, Propagation Delay, Number of Channels.
ADUM4221BRWZ-RL7
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←ADUM3223ARWZ-RL7
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←ADUM3224ARWZ
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←UCC21520DW
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
ISO5852SDW
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
SI8271GB-IS
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
ADUM4221ARWZ-RL7 דירוגים מרביים ומאפיינים חשמליים
| Technology | iCoupler |
| Number of Channels | 2 |
| Peak Output Current | 4 A |
| Isolation Voltage | 5000 Vrms |
| Propagation Delay | 60 ns (typical) |
| Common-Mode Transient Immunity | 100 kV/us |
| Supply Voltage Range | 4.5 V to 18 V |
| Dead Time | Adjustable |
| מארז | 16-lead SOIC |
| טווח טמפרטורת פעולה | -40C to +125C |
| Under-Voltage Lockout (UVLO) | Yes (input and output) |
| סטטוס RoHS | Compliant |
| סוג הרכבה | Surface Mount |
| תצורת מוצא | High-side and low-side |
| Isolation Rating | 5000 Vrms |
תצורת פינים של ADUM4221ARWZ-RL7
| פין 1 | VDD1 — Input supply voltage |
| פין 2 | GND1 — Input ground |
| פין 3 | VIA — Input signal for high-side driver |
| פין 4 | VIB — Input signal for low-side driver |
| פין 5 | DT — Dead time control |
| פין 6 | GND1 — Input ground |
| פין 7 | NC — No connect |
| פין 8 | NC — No connect |
| פין 9 | VDD2 — Output supply voltage |
| פין 10 | VOA — High-side output |
| פין 11 | GND2 — Output ground |
| פין 12 | VOB — Low-side output |
| פין 13 | GND2 — Output ground |
| פין 14 | NC — No connect |
| פין 15 | NC — No connect |
| פין 16 | GND1 — Input ground |
יישומים טיפוסיים
ADUM4221ARWZ-RL7 מתאים עבור 6 יישוםs: Isolated Switch-Mode Power Supplies, Motor Drives, Solar Inverters, Industrial Automation, Electric Vehicle Chargers, Uninterruptible Power Supplies (UPS).
Isolated Switch-Mode Power Supplies
The ADUM4221ARWZ-RL7 is ideal for isolated switch-mode power supplies (SMPS) where high-side and low-side MOSFETs need isolated drive signals. Its 4 A peak output current ensures fast switching, while the 5000 Vrms isolation provides safety and noise immunity. The adjustable dead time prevents shoot-through, improving efficiency and reliability. The wide supply voltage range (4.5 V to 18 V) accommodates various control ICs, and the 100 kV/us CMTI ensures stable operation in noisy power environments.
מומלץ
Motor Drives
In motor drive applications, the ADUM4221ARWZ-RL7 provides isolated gate drive for the high-side and low-side switches of a half-bridge inverter. Its 4 A peak output current drives large MOSFETs and IGBTs, while the adjustable dead time optimizes switching to minimize losses and prevent cross-conduction. The 5000 Vrms isolation protects the control circuitry from high-voltage transients, and the 100 kV/us CMTI ensures reliable operation in electrically noisy industrial environments.
מומלץ
Solar Inverters
The ADUM4221ARWZ-RL7 is well-suited for solar inverters, where isolated gate drive is essential for the half-bridge or full-bridge topology. Its 4 A peak output current enables efficient switching of power MOSFETs and IGBTs, while the adjustable dead time reduces switching losses and prevents shoot-through. The high isolation voltage (5000 Vrms) ensures safety in high-voltage DC bus systems, and the wide operating temperature range (-40C to +125C) supports outdoor installations.
מומלץ
Industrial Automation
In industrial automation, the ADUM4221ARWZ-RL7 provides isolated gate drive for power stages in PLCs, robotics, and factory equipment. Its 4 A peak output current drives various power switches, while the adjustable dead time ensures reliable operation in half-bridge configurations. The 5000 Vrms isolation protects sensitive control logic from high-voltage transients, and the 100 kV/us CMTI ensures stable operation in harsh electromagnetic environments.
מומלץ
Electric Vehicle Chargers
The ADUM4221ARWZ-RL7 is used in electric vehicle (EV) chargers to drive the power switches in the AC-DC and DC-DC conversion stages. Its 4 A peak output current enables efficient switching of high-power MOSFETs and IGBTs, while the adjustable dead time optimizes performance and reduces losses. The 5000 Vrms isolation provides safety in high-voltage systems, and the wide operating temperature range supports automotive-grade requirements.
מומלץ
Uninterruptible Power Supplies (UPS)
In UPS systems, the ADUM4221ARWZ-RL7 provides isolated gate drive for the inverter stage, ensuring reliable switching of power transistors. Its 4 A peak output current and adjustable dead time enhance efficiency and prevent shoot-through. The high isolation voltage (5000 Vrms) protects control electronics from high-voltage DC bus, and the 100 kV/us CMTI ensures stable operation during transient events.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור ADUM4221ARWZ-RL7 — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | ADUM4221BRWZ-RL7 | ADUM3223ARWZ-RL7 | ADUM3224ARWZ | UCC21520DW |
|---|---|---|---|---|---|
| Package | 16-lead SOIC | 16-lead SOIC | 16-lead SOIC | 16-lead SOIC | 16-lead SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Peak Output Current | 4 A | 4 A | 4 A | 4 A | 4 A |
| Isolation Voltage | 5000 Vrms | 5000 Vrms | 5000 Vrms | 5000 Vrms | 5000 Vrms |
| Propagation Delay | 60 ns | 60 ns | 60 ns | 60 ns | 30 ns |
| Common-Mode Transient Immunity | 100 kV/us | 100 kV/us | 100 kV/us | 100 kV/us | 100 kV/us |
| Adjustable Dead Time | Yes | Yes | No | No | Yes |
| Supply Voltage Range | 4.5 V to 18 V | 4.5 V to 18 V | 4.5 V to 18 V | 4.5 V to 18 V | 4.5 V to 18 V |
מבדילים עיקריים
- Adjustable dead time (לעומתADUM3223ARWZ-RL7)
- Higher isolation voltage (לעומתADUM3221ARZ-RL7)
- 16-lead SOIC package (לעומתADUM3221ARZ-RL7)
הערות תכנון
Ensure proper PCB layout to minimize parasitic inductance and maintain signal integrity. Place the gate driver close to the power switches and use short, wide traces for gate drive signals. Add decoupling capacitors (0.1 uF and 10 uF) close to the VDD1 and VDD2 pins to filter noise and provide stable supply.
The ADUM4221ARWZ-RL7 can dissipate significant power when driving large capacitive loads at high frequencies. Ensure adequate thermal management by providing a copper pour under the device and using thermal vias to the ground plane. Monitor junction temperature to stay within the -40C to +125C operating range.
Set the dead time appropriately to prevent shoot-through currents in half-bridge configurations. Use the DT pin to adjust dead time based on the switching characteristics of the power transistors. Also, ensure that the UVLO thresholds are compatible with your supply voltages to avoid unintended operation.
מידע על תאימות
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified; for automotive applications, verify with manufacturer.
