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DC Motor Driver
turn off capability and diagnostic feedback.
The on-chip protection circuit goes into PWM mode, limiting the
Truth Table
average current during short circuit if the drain current exceeds
Condition
In
5A. The protection circuit latches off the high side switch if the
junction temperature exceeds 170擄C and latches on after the junc-
Normal
H
tion temperature falls by 10擄C. The drain to source voltage is
Normal
L
actively clamped at 55V, improving its performance during turn
Output Open
H
off with inductive loads.
L
The on-chip charge pump high side driver stage is floating and ref-
Output Open
erenced to the source of the power MOSFET. Thus the logic to
Shorted Output
H
power ground isolation can be as high as 50V. This allows opera-
Shorted Output
L
tion with larger offset as well as controlling the switch during
Over-Temperature
H
load energy recirculation or regeneration.
Over-Temperature
L
A diagnostic pin is provided for status feedback of short circuit,
over temperature and open load detection.
Out
H
L
H
H
Current-Limiting
L
L
L
Dg
H
L
H
H
L
L
L
L
Block Diagram
Available Packages
IR6220
TO-220
(5-lead)
To Order