ISO5452DWR High-CMTI 2.5-A and 5-A Isolated IGBT, MOSFET Gate Driver
With Split Outputs and Active Protection Features
Features
• 50-kV/μs Minimum and 100-kV/μs Typical Common-Mode Transient Immunity (CMTI) at VCM = 1500 V
• Split Outputs to provide 2.5-A Peak Source and 5-A Peak Sink Currents
• Short Propagation Delay: 76 ns (Typ), 110 ns (Max)
• 2-A Active Miller Clamp
• Output Short-Circuit Clamp
• Soft Turn-Off (STO) during Short Circuit
• Fault Alarm upon Desaturation Detection is Signaled on FLT and Reset Through RST
• Input and Output Undervoltage Lockout (UVLO) With Ready (RDY) Pin Indication
• Active Output Pulldown and Default Low Outputs With Low Supply or Floating Inputs
• 2.25-V to 5.5-V Input Supply Voltage
• 15-V to 30-V Output Driver Supply Voltage
• CMOS Compatible Inputs
• Rejects Input Pulses and Noise Transients Shorter Than 20 ns
• Operating Temperature: –40°C to +125°C Ambient
• Isolation Surge Withstand Voltage 10000-VPK
• Safety-Related Certifications:
– 8000-VPK VIOTM and 1420-VPK VIORM Reinforced Isolation per DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
– 5700-VRMS Isolation for 1 Minute per UL 1577
– CSA Component Acceptance Notice 5A, IEC 60950–1 and IEC 60601–1 End Equipment Standards
– TUV Certification per EN 61010-1 and EN 60950-1
– GB4943.1-2011 CQC Certification
Applications
• Isolated IGBT and MOSFET Drives in:
– Industrial Motor Control Drives
– Industrial Power Supplies
– Solar Inverters
– HEV and EV Power Modules
– Induction Heating
Description
The ISO5452 is a 5.7-kVRMS, reinforced isolated gate driver for IGBTs and MOSFETs with split outputs, OUTH and OUTL, providing 2.5-A source and 5-A sink current. The input side operates from a single 2.25-V to 5.5-V supply. The output side allows for a supply range from minimum 15 V to maximum 30 V. Two complementary CMOS inputs control the output state of the gate driver. The short propagation time of 76 ns assures accurate control of the output stage.
An internal desaturation (DESAT) fault detection recognizes when the IGBT is in an overcurrent condition. Upon a DESAT detect, a Mute logic immediately blocks the output of the isolator and initiates a soft-turn-off procedure which disablesOUTH, and pulls OUTL to low over a time span of 2 μs. When OUTL reaches 2 V with respect to the most negative supply potential, VEE2, the gate driver
output is pulled hard to VEE2 potential, turning the IGBT immediately off.
