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What is IR21531DPBF?

This electronic component, produced by the manufacturer "International Rectifier", performs the same function as "SELF-OSCILLATING HALF-BRIDGE DRIVER".


IR21531DPBF Datasheet PDF - International Rectifier

Part Number IR21531DPBF
Description SELF-OSCILLATING HALF-BRIDGE DRIVER
Manufacturers International Rectifier 
Logo International Rectifier Logo 


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Preliminary Data Sheet No. PD60131-L
IR21531D(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
Tr/Tp
Vclamp
Deadtime (typ.)
Packages
600V max.
50%
80/40ns
15.6V
0.6 µs
Description
The IR21531(D)(S) are an improved version of the
8 Lead PDIP
8 Lead SOIC
popular IR2155 and IR2151 gate driver ICs, and in-
corporates 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.
IR21531(S)
VCC VB
Typical Connections
600V
MAX
IR21531D
VCC VB
600V
MAX
HO
RT VS
HO
RT VS
Shutdown
CT LO
COM
Shutdown
CT LO
COM
www.irf.com
1

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IR21531DPBF equivalent
IR21531D(S) & (PbF)
Electrical Characteristics (cont.)
Gate Driver Output Characteristics
Symbol Definition
VOH High level output voltage, VBIAS -VO
VOL
Low-level output voltage, VO
VOL_UV UV-mode output voltage, VO
tr Output rise time
tf Output fall time
tsd Shutdown propogation delay
td Output deadtime (HO or LO)
Min.
0.35
Typ.
0
0
0
80
45
660
0.60
Max.
100
100
100
150
100
0.85
Units Test Conditions
IO = OA
mV IO = OA
IO = OA
VCC VCCUV-
nsec
µsec
Lead Definitions
Symbol
VCC
RT
CT
COM
LO
VS
HO
VB
Description
Logic and internal gate drive supply voltage
Oscillator timing resistor input
Oscillator timing capacitor input
IC power and signal ground
Low side gate driver output
High voltage floating supply return
High side gate driver output
High side gate driver floating supply
Lead Assignments
8 Lead DIP
IR21531(D)
NOTE: The IR21531D is offered in 8 lead DIP only.
www.irf.com
8 Lead SOIC
IR21531S
5


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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for IR21531DPBF electronic component.


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Featured Datasheets

Part NumberDescriptionMFRS
IR21531DPBFThe function is SELF-OSCILLATING HALF-BRIDGE DRIVER. International RectifierInternational Rectifier

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