ADUM4221ARWZ-RL7 - Isolated Half-Bridge Gate Driver | Analog Devices
MPN： ADUM4221ARWZ-RL7 ✓ 啟用中ADUM4221ARWZ-RL7 概覽
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.
直接替換替代品，適用於 ADUM4221ARWZ-RL7 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ADUM4221ARWZ-RL7 （相同外形與佔位） — 差異在於 Package, Isolation Voltage, Technology, Propagation Delay, Number of Channels.
ADUM4221BRWZ-RL7
✅ 直接替換聯絡詢價
查看資料表 →ADUM3223ARWZ-RL7
✅ 直接替換聯絡詢價
查看資料表 →ADUM3224ARWZ
✅ 直接替換聯絡詢價
查看資料表 →UCC21520DW
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ISO5852SDW
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
SI8271GB-IS
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ADUM4221ARWZ-RL7 最大額定值與電氣特性
| 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 |
| 封裝 | 16-lead SOIC |
| 工作溫度範圍 | -40C to +125C |
| Under-Voltage Lockout (UVLO) | Yes (input and output) |
| RoHS 狀態 | Compliant |
| 安裝類型 | Surface Mount |
| 輸出配置 | High-side and low-side |
| Isolation Rating | 5000 Vrms |
ADUM4221ARWZ-RL7 腳位配置
| 腳位 1 | VDD1 — Input supply voltage |
| 腳位 2 | GND1 — Input ground |
| 腳位 3 | VIA — Input signal for high-side driver |
| 腳位 4 | VIB — Input signal for low-side driver |
| 腳位 5 | DT — Dead time control |
| 腳位 6 | GND1 — Input ground |
| 腳位 7 | NC — No connect |
| 腳位 8 | NC — No connect |
| 腳位 9 | VDD2 — Output supply voltage |
| 腳位 10 | VOA — High-side output |
| 腳位 11 | GND2 — Output ground |
| 腳位 12 | VOB — Low-side output |
| 腳位 13 | GND2 — Output ground |
| 腳位 14 | NC — No connect |
| 腳位 15 | NC — No connect |
| 腳位 16 | GND1 — Input ground |
典型應用
ADUM4221ARWZ-RL7 適用於 6 應用s: 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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
推薦產品摘要
工程參考資料，適用於 ADUM4221ARWZ-RL7 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | 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 |
主要差異化特點
- Adjustable dead time (對比ADUM3223ARWZ-RL7)
- Higher isolation voltage (對比ADUM3221ARZ-RL7)
- 16-lead SOIC package (對比ADUM3221ARZ-RL7)
設計說明
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.
合規資訊
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified; for automotive applications, verify with manufacturer.
