Datasheet

BOOT
SW
ILIM
EN/SS
COMP
FB
GND
VDD
BP
PGOOD
PAD
VIN
+
+
FB
0.6 V
REF
+ 12.5%
0.6 V
REF
–12.5%
+
Fault
Controller
SS
Soft Start
BP
Anti-Cross
Conduction
and
Pre-Bias
Circuit
PWM
Logic
BP
Clock
6-V
Regulator
References
0.6
V
REF
SD
BP
Oscillator
+
Calibration
Circuit
+
UDG-11046
0.6 V
REF
SS
10 mA
750 kW
Fault Controller
Thermal
Shutdown
OC
Threshold
Setting
10 mA
OC
SS
SD
PWM
Clock
OC
TPS56221
TPS56221
SLUSAH5B –MARCH 2011–REVISED SEPTEMBER 2012 www.ti.com
PIN FUNCTIONS (continued)
PIN I/O DESCRIPTION
NAME NO.
12
13
14
VIN I Power input to the high-side FET.
15
16
17
FUNCTIONAL BLOCK DIAGRAM
6 Copyright © 2011–2012, Texas Instruments Incorporated
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