ADUM4137BRWZ-RL7 - 6A Isolated IGBT Gate Driver | Analog Devices
MPN： ADUM4137BRWZ-RL7 ✓ 啟用中ADUM4137BRWZ-RL7 概覽
An isolated gate driver is a specialized integrated circuit that transfers a control signal from a low-voltage controller to a high-voltage power switch (such as an IGBT or MOSFET) while providing electrical isolation between the two domains. This isolation is critical for safety and noise immunity in applications where the power stage operates at high voltages, such as motor drives, inverters, and power supplies. The ADUM4137 belongs to the family of isolated gate drivers, which are essential components in power electronics systems, bridging the gap between digital control and high-power switching.
Key features of the ADUM4137 include a 5kVrms isolation rating, a high common-mode transient immunity (CMTI) of 100 kV/µs, and a Miller clamp function that prevents false turn-on of the IGBT during high dv/dt events. The device also provides fault detection and a desaturation protection feature, which monitors the collector-emitter voltage of the IGBT to detect overcurrent conditions. The driver supports a wide supply voltage range on the secondary side (up to 35V) and includes an active Miller clamp that engages when the gate voltage drops below 2.0V, ensuring robust turn-off even with unipolar supplies.
From a technical perspective, the ADUM4137 employs Analog Devices' proprietary iCoupler technology, which uses planar magnetic transformers to transmit data across the isolation barrier. This approach offers superior performance compared to optocouplers, including higher data rates, lower power consumption, and better reliability over temperature and time. The device also features a built-in desaturation (DESAT) detection circuit that can be configured to protect the IGBT from short-circuit conditions, and a fault output that can be used to signal the controller. The driver's propagation delay is typically 100ns, and it can operate at switching frequencies up to 1MHz, making it suitable for high-frequency power converters.
Typical applications for the ADUM4137 include motor drives, solar inverters, uninterruptible power supplies (UPS), and industrial power supplies. In these systems, the driver ensures reliable and efficient switching of IGBTs, reducing switching losses and improving system reliability. The device is also used in electric vehicle (EV) traction inverters and charging stations, where high isolation and robust protection are essential.
When designing with the ADUM4137, it is important to ensure proper PCB layout to minimize parasitic inductance and maintain signal integrity. The input and output grounds must be separated according to the isolation barrier, and the DESAT pin should be connected to the IGBT collector through a high-voltage diode to detect overcurrent conditions. Additionally, the Miller clamp pin should be connected to the gate with a low-inductance path to effectively suppress false turn-on.
直接替換替代品，適用於 ADUM4137BRWZ-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： ADUM4137BRWZ-RL7 （相同外形與佔位） — 差異在於 Package, DESAT Threshold, Peak Output Current.
ADUM4137WBRNZ
✅ 直接替換📋 參考替代品（不在目錄中）
ADUM4136BRWZ
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ADUM4135BRWZ
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ADUM4137BRWZ-RL7 最大額定值與電氣特性
| Isolation Voltage | 5000 Vrms |
| Peak Output Current | 6 A |
| Number of Channels | 1 |
| Technology | Magnetic Coupling (iCoupler) |
| Common-Mode Transient Immunity (CMTI) | 100 kV/µs |
| Propagation Delay | 100 ns (typical) |
| Maximum Switching Frequency | 1 MHz |
| Secondary Supply Voltage Range | Up to 35 V |
| Miller Clamp Threshold | 2.0 V (typical) |
| 封裝 | 28-SOIC-W-FP |
| 工作溫度範圍 | -40°C to +125°C |
| RoHS 狀態 | Compliant |
| 安裝類型 | Surface Mount |
| Fault Detection | Desaturation (DESAT) protection |
ADUM4137BRWZ-RL7 腳位配置
| 腳位 1 | VDD1 — Input supply voltage |
| 腳位 2 | GND1 — Input ground |
| 腳位 3 | IN — Input signal |
| 腳位 4 | EN — Enable input |
| 腳位 5 | FAULT — Fault output |
| 腳位 6 | DESAT — Desaturation detection input |
| 腳位 7 | GND2 — Output ground |
| 腳位 8 | VDD2 — Output supply voltage |
| 腳位 9 | OUT — Gate drive output |
| 腳位 10 | CLAMP — Miller clamp output |
典型應用
ADUM4137BRWZ-RL7 適用於 6 應用s: Motor Drives, Solar Inverters, Uninterruptible Power Supplies (UPS), Industrial Power Supplies, Electric Vehicle (EV) Traction Inverters, Renewable Energy Systems.
Motor Drives
The ADUM4137BRWZ-RL7 is ideal for motor drives, where it provides isolated gate drive for IGBTs in variable frequency drives (VFDs). Its 6A peak output current ensures fast switching of large IGBT modules, reducing switching losses. The high CMTI of 100 kV/µs ensures reliable operation in the noisy environment of motor drives, where high dv/dt transients are common. The desaturation protection helps detect overcurrent conditions, protecting the IGBTs from damage. The driver's 5000Vrms isolation provides safety isolation between the low-voltage control and high-voltage power stages, meeting industrial safety standards.
推薦
Solar Inverters
In solar inverters, the ADUM4137BRWZ-RL7 drives IGBTs in the DC-AC conversion stage. Its high isolation voltage (5000Vrms) ensures safe operation in high-voltage systems, while the 6A peak current enables efficient switching at high frequencies. The Miller clamp feature prevents false turn-on due to dv/dt, improving reliability. The desaturation protection detects short-circuit conditions, safeguarding the IGBTs. The driver's wide secondary supply range (up to 35V) accommodates various gate drive voltages, making it versatile for different inverter designs.
推薦
Uninterruptible Power Supplies (UPS)
The ADUM4137BRWZ-RL7 is used in UPS systems to drive IGBTs in the inverter stage, ensuring reliable power conversion during outages. Its fast propagation delay (100ns) allows precise control of switching timing, reducing distortion in the output waveform. The high CMTI ensures stable operation in the presence of transients. The desaturation protection helps prevent IGBT failure under overload conditions, enhancing system reliability. The compact 28-SOIC-W-FP package saves board space, which is critical in UPS designs.
推薦
Industrial Power Supplies
In industrial power supplies, the ADUM4137BRWZ-RL7 provides isolated gate drive for IGBTs in switch-mode power supplies (SMPS). Its 6A peak current enables efficient switching at high frequencies, reducing transformer size. The isolation barrier protects the control circuitry from high voltages, enhancing safety. The Miller clamp ensures robust turn-off, preventing shoot-through in bridge topologies. The device's wide operating temperature range (-40°C to +125°C) makes it suitable for harsh industrial environments.
推薦
Electric Vehicle (EV) Traction Inverters
The ADUM4137BRWZ-RL7 is used in EV traction inverters to drive IGBTs in the motor drive circuit. Its high isolation voltage (5000Vrms) meets automotive safety requirements, while the 6A peak current enables fast switching of high-power IGBTs. The desaturation protection is critical for detecting overcurrent conditions in the demanding EV environment. The high CMTI ensures reliable operation in the presence of electromagnetic interference from the motor. The device's compact package and wide temperature range make it suitable for automotive applications.
推薦
Renewable Energy Systems
In renewable energy systems such as wind turbines and energy storage, the ADUM4137BRWZ-RL7 drives IGBTs in power conversion stages. Its high isolation and robust protection features ensure reliable operation in harsh environments. The 6A peak current enables efficient switching, improving system efficiency. The Miller clamp prevents false turn-on, enhancing reliability. The desaturation protection safeguards the IGBTs from overcurrent, reducing downtime. The driver's wide supply range and temperature range make it versatile for various renewable energy applications.
推薦
推薦產品摘要
工程參考資料，適用於 ADUM4137BRWZ-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 | ADUM4137WBRNZ | ADUM4136BRWZ | ADUM4135BRWZ |
|---|---|---|---|---|
| Package | 28-SOIC-W-FP | 28-SOIC-W-FP | 28-SOIC-W-FP | 28-SOIC-W-FP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Isolation Voltage | 5000 Vrms | 5000 Vrms | 5000 Vrms | 5000 Vrms |
| Peak Output Current | 6 A | 6 A | 4 A | 4 A |
| CMTI | 100 kV/µs | 100 kV/µs | 100 kV/µs | 100 kV/µs |
| Propagation Delay | 100 ns | 100 ns | 100 ns | 100 ns |
| Miller Clamp | Yes | Yes | No | No |
| Desaturation Protection | Yes | Yes | Yes | Yes |
主要差異化特點
- Higher output current (6A) compared to ADUM4136/4135 (4A) (對比ADUM4136BRWZ)
- Integrated Miller clamp for robust turn-off (對比ADUM4136BRWZ)
- Same package and pinout as ADUM4137WBRNZ (對比ADUM4137WBRNZ)
設計說明
For optimal performance, place the ADUM4137BRWZ-RL7 close to the IGBT gate to minimize gate loop inductance. Use separate ground planes for the input and output sides, and connect them only at the isolation barrier. Ensure the DESAT pin is connected to the IGBT collector through a high-voltage diode and a resistor to set the blanking time. The Miller clamp pin should be connected to the gate with a low-inductance trace to effectively suppress false turn-on.
The secondary supply (VDD2) should be decoupled with a 10µF ceramic capacitor and a 0.1µF capacitor placed close to the VDD2 and GND2 pins. The input supply (VDD1) should also be decoupled with a 1µF capacitor. Ensure the supply voltages are within the recommended operating range to avoid damage. The DESAT blanking capacitor should be selected to provide adequate blanking time without delaying fault detection.
The ADUM4137BRWZ-RL7 dissipates power internally, especially at high switching frequencies. Ensure adequate PCB copper area for heat dissipation, particularly under the package. The thermal resistance of the 28-SOIC-W-FP package is moderate, so for high-power applications, consider adding thermal vias to a ground plane. Monitor the junction temperature to stay within the absolute maximum ratings.
合規資訊
RoHS compliant per Analog Devices product page. AEC-Q100 qualification not specified for this part.
