DRV593 Datasheet, PDF (5/22 Pages) Texas Instruments – 3−A HIGH−EFFICIENCY PWM POWER DRIVER

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FUNCTIONAL BLOCK DIAGRAM
AVDD AGND
AVDD
2.3 × R (DRV593)
R
14.5 x R (DRV594)
IN -
_
+
_
+
IN+
R
2.3 × R (DRV593)
14.5 x R (DRV594)
SHUTDOWN
INT/EXT
FREQ
COSC
ROSC
AREF
TTL
Input
Buffer
Biases
and
References
_
+
_
+
Ramp
Generator
DRV593
DRV594
SLOS401A - SEPTEMBER 2002 REVISED - OCTOBER 2002
+
Gate
_
Drive
PVDD
H/C
PGND
PVDD
+
Gate
_
Drive
PWM
PGND
Start-Up
Protection
Logic
OC
Detect
Thermal
VDDok
FAULT0
FAULT1
5