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SLVS619A – NOVEMBER 2005 – REVISED FEBRUARY 2006
FUNCTIONAL BLOCK DIAGRAM
AGND
VIN
Enable
Comparator
Falling
Edge
Deglitch
2.5
m
s
SHUTDOWN
Thermal
Shutdown
o
150 C
VBIAS
SS/ENA
1.2 V
VBIAS
ILIM
Comparator
REG
VIN
3V
−
6V
Hysteresis: 0.03 V
VIN UVLO
Comparator
VIN
2.95 V
Hysteresis: 0.16 V
Leading
Edge
Blanking
100 ns
BOOT
59 mW
SS_DIS
SHUTDOWN
PH
L
OUT
C
O
V
O
Falling
and
Rising
Edge
Deglitch
2.5
m
s
Internal/External
Slow-start
(Internal Slow-start ime = 3.35 ms
T
+
−
Error
Amplifier
PWM
Comparator
R Q
S
Adaptive Dead-T
ime
and
Control Logic
VIN
59 mW
Reference
VREF = 0.891 V
OSC
Powergood
Comparator
VSENSE
TPS54317
0.90 V
ref
Hysteresis: 0.03 V
ref
VSENSE
COMP
RT
SYNC
SHUTDOWN
PGND
PWRGD
Falling
Edge
Deglitch
35
m
s
ADDITIONAL 3-A SWIFT DEVICES
DEVICE
TPS54310
TPS54380
OUTPUT VOLTAGE
Adjustable
Sequencing/Adjustable
DEVICE
TPS54372
TPS54373
OUTPUT VOLTAGE
DDR/Adjustable
Prebias/Adjustable
RELATED DC/DC PRODUCTS
•
•
•
TPS40007 – dc/dc controller
PTH0407W – 3-A plug-in module
UC282-ADJ – 3-A low dropout regulator
6
TI [ TEXAS INSTRUMENTS ]
