IR21531S Просмотр технического описания (PDF) - Infineon Technologies
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IR21531S Datasheet PDF : 9 Pages
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Data Sheet revP
(NOTE:For new designs, we recommend
IR’s new product IRS21531D)
IR21531(D)(S) &(PbF)
SELF-OSCILLATING HALF-BRIDGE DRIVER
Features
• Integrated 600V half-bridge gate driver
• 15.6V zener clamp on Vcc
• True micropower start up
• Tighter initial deadtime control
• Low temperature coefficient deadtime
• Shutdown feature (1/6th Vcc) on CT pin
• Increased undervoltage lockout Hysteresis (1V)
• Lower power level-shifting circuit
• Constant LO, HO pulse widths at startup
• Lower di/dt gate driver for better noise immunity
• Low side output in phase with RT
• Internal 50nsec (typ.) bootstrap diode (IR21531D)
• Excellent latch immunity on all inputs and outputs
• ESD protection on all leads
• Also available LEAD-FREE
Product Summary
VOFFSET
Duty Cycle
600V max.
50%
Tr/Tp
Vclamp
Deadtime (typ.)
80/40ns
15.6V
0.6 µs
Packages
Description
The IR21531D(S) are an improved version of the
8 Lead PDIP
8 Lead SOIC
popular IR2155 and IR2151 gate driver ICs, and incor-
porates a high voltage half-bridge gate driver with a front end oscillator similar to the industry standard CMOS
555 timer. The IR21531 provides more functionality and is easier to use than previous ICs. A shutdown feature
has been designed into the CT pin, so that both gate driver outputs can be disabled using a low voltage control
signal. In addition, the gate driver output pulse widths are the same once the rising undervoltage lockout
threshold on VCC has been reached, resulting in a more stable profile of frequency vs time at startup.
Noise immunity has been improved significantly, both by lowering the peak di/dt of the gate drivers, and by
increasing the undervoltage lockout hysteresis to 1V. Finally, special attention has been payed to maximizing
the latch immunity of the device, and providing comprehensive ESD protection on all pins.
Typical Connections
IR21531D
VCC VB
600V
MAX
IR21531(S)
VCC VB
600V
MAX
HO
RT
VS
HO
RT
VS
Shutdown
CT
LO
COM
Shutdown
CT
LO
COM
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