Transcript Document

600V GENERAL PURPOSE CURRENT SENSING IC
The robust IR25750L general purpose
current sensing IC is available in an
ultra-compact SOT23-5L package that
boosts overall system efficiency while
delivering dramatic space savings for
high current applications
Advantages
•
Features
• VDS(on) or VCE(on) current sensing
• Eliminate external current sensing resistors
or transformers
• Enables loss-less current sensing
• Enables inductance-less current sensing
• 600V blocking capability
• No VCC required
• Programmability and temperature
compensation possible
• Gate drive on/off input
• Filter delay at GATE turn-on (200 nsec typ)
• 20.8V Zener clamps on GATE and CS pins
• Excellent latch immunity on all inputs and
outputs
• Integrated ESD protection on all pins
• Tiny 5-pin SOT-23 package
•
•
Measuring high currents (10-100A) through a
power MOSFET, DirectFET®, or IGBT typically
requires a large resistor which generates
excess power losses (10-30W). By extracting
the VDS(on) of a power MOSFET, or the VCE(on)
of an IGBT, during the switch’s on-time, the
IR25750L eliminates large external current
sensing resistors, heatsinks and excess power
losses.
The IR25750L’s gate drive input provides the
VCC supply voltage to the IC and
synchronizes the VDS(on) or VCE(on) sensing
circuit to the on and off times of the MOSFET
or IGBT.
Leveraging IR’s proprietary high-voltage
technology, the device also features 600V
blocking capability necessary for blocking high
VDS or VCE voltages during the switch off time.
DATASHEET
PRESS
RELEASE
HI-RES
GRAPHIC
March 2014