Features and Benefits
- Adjustable Dead time
- Output voltage range to 35 V
- Screw terminals for easy connectivity
- Pad placement for external series gate resistors
- Pad placement for capacitive load testing
- Supports TO-220 or TO-252 IGBTs or MOSFETs
- Bootstrap option
- Jumper placement for easy half bridge setup
The EVAL-ADuM4221EBZ supports the ADuM4221 half bridge gate driver that employs Analog Devices, Inc., iCoupler® technology to provide independent and isolated high-side and low-side outputs. The EVAL-ADuM4221EBZ is populated with the ADuM4221, which has VIA and VIB inputs and dead time control. The EVAL-ADuM4221EBZ supplies jumpers and screw terminals to configure different drive conditions. The EVAL-ADuM4221EBZ operates with square waves and dc values on the VIA, VIB, and DISABLE pins.
The ADuM4221 operates with an input supply ranging from 2.5 V to 6.5 V, providing compatibility with lower voltage systems. Logic level voltages at the input pins control the VOA and VOB outputs. The driver has a DISABLE input pin that, if held high, shuts the device off regardless of the input on the channels. In addition to basic overlap protection, the dead time (DT) pin on the primary side allows an adjustable dead time between the VOA and VOB output transitions.
The ADuM4221 provides operation with voltages of up to 35 V on the secondary side. The EVAL-ADuM4221EBZ has a provision for the high-side supply to be bootstrapped to the low-side supply. The EVAL-ADuM4221EBZ facilitates testing of the propagation delay, drive strength, dead time operation, and input logic of the device. Because the EVAL-ADuM4221EBZ has footprints for insulated gate bipolar transistors (IGBTs) and metal-oxide semiconductor field effect transistors (MOSFETs) in TO-220 and TO-252 packages, the ADuM4221 can be evaluated with many different power devices.
For complete information about the ADuM4221, refer to the ADuM4221 data sheet in conjunction with this user guide when using the EVAL-ADuM4221EBZ.
Suggested test equipment
- Primary side power supply: 0 V to 6.5 V at 100 mA
- 2 secondary side supplies: 0 V to 35 V at 250 mA
- Square wave generator: 0 V to 5 V