ADUM3220BRZ

Current - Output High, Low:	--
Base Part Number:	ADUM3220
Approvals:	CSA, UR, VDE
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Voltage - Supply:	7.6 V ~ 18 V
Voltage - Forward (Vf) (Typ):	--
Current - Peak Output:	4A
Series:	iCoupler®
Rise / Fall Time (Typ):	20ns, 20ns
Pulse Width Distortion (Max):	--
Propagation Delay tpLH / tpHL (Max):	60ns, 60ns
Common Mode Transient Immunity (Min):	25kV/µs
Voltage - Isolation:	2500Vrms
Number of Channels:	2
Technology:	Magnetic Coupling
Part Status:	Active
Packaging:	Tube

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Introduction

The ADUM3220BRZ is an integrated high performance, low power isolation and gate driver solution for motor control applications. The integrated dual ST Technology (STST) insulated gate bipolar transistor (IGBT) or MOSFET gate driver features two fully floating driver channels for two independent IGBT/MOSFET gate drivers with internal pull-up and pull-down circuits that provide a clean gate signal with minimal ringing. The fast edge rate with built-in glitch filter, the integrated fault flags, and the selectable dead time make the ADUM3220BRZ an ideal choice for a wide range of motor control applications.

Application Fields

The ADUM3220BRZ Gate Drivers are suitable for a wide range of applications including electric powertrains, power supplies, motor control, industrial automation, and avionics. The integrated ST Technology insulation layer provides an isolation voltage of up to 2.2kV, which eliminates the need for opto-couplers in applications requiring high voltage isolation. The gate drivers also feature a shutdown feature that protects the motor from over-accelerated current events, and the integrated fault flags can detect input signal short to GND, open, over-voltage, and under-voltage conditions.

Working Principle

The ADUM3220BRZ Gate Drivers provide up to two independent floating driver channels, each powered from a dedicated 5V or 7.5V DC power rail. The distributed driver channels provide flexibility and enable the user to design optimized motor control systems. The high- and low-side channel inputs are connected to the motor control system. Depending on the input signal, the gate driver will internally generate the drive signal and apply it to the gate of the IGBT or MOSFET. The integrated dead time feature helps to prevent shoot-through current conditions that may damage the motor. The integrated fault flags will detect over-voltage, under-voltage, open, and short conditions on the signal inputs as well as a safety shutdown feature that will stop the motor in case of an over-current event.

Conclusion

The ADUM3220BRZ Gate Drivers are highly integrated and configurable motor control solutions that are suitable for a wide range of applications. The ST Technology insulation layer provides isolation up to 2.2kV, and the integrated fault flags can detect short, open, and over/under voltage conditions on the inputs. The gate drivers also provide an integrated dead time feature that helps to prevent shoot-through current, and a shutdown feature that stops the motor in case of an over-current event.

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