IRS21867S View Datasheet(PDF) - International Rectifier

Part Name

Description

Manufacturer

IRS21867S

HIGH AND LOW SIDE DRIVER

International Rectifier 

IRS21867S

Switching and Timing Relationships

The relationships between the input and output signals of the IRS21867 are illustrated below in Figures 3, 4. From

these figures, we can see the definitions of several timing parameters (i.e., PWIN, PWOUT, tON, tOFF, tR, and tF)

associated with this device.

LINx

(or HINx) 50%

50%

PWIN

LOx

(or HOx)

tON tR

90%

10%

PWOUT

tOFF tF

90%

10%

Figure 3: Switching time waveforms

Figure 4: Input/output timing diagram

Matched Propagation Delays

The IRS21867 is designed with propagation delay matching circuitry. With this feature, the IC’s response at the

output to a signal at the input requires approximately the same time duration (i.e., tON, tOFF) for both the low-side

channels and the high-side channels; the maximum difference is specified by the delay matching parameter (MT).

The propagation turn-on delay (tON) is matched to the propagation turn-on delay (tOFF).

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