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SLVS398D − JUNE 2001 − REVISED JULY 2003
INTERNAL BLOCK DIAGRAM
VBIAS
AGND
VBIAS
VIN
Enable
Comparator
SS/ENA
REG
Falling
Edge
SHUTDOWN
VIN
ILIM
Comparator
1.2 V
3 − 6 V
Deglitch
Thermal
Shutdown
150°C
Hysteresis: 0.03
Leading
Edge
Blanking
2.5 µs
V
VIN UVLO
Comparator
Falling
and
100 ns
VIN
BOOT
Rising
Edge
2.95 V
Deglitch
Hysteresis: 0.16
V
30 mΩ
2.5 µs
SS_DIS
SHUTDOWN
L
OUT
V
O
PH
Internal/External
Slow-start
(Internal Slow-start Time = 3.35 ms
+
−
C
O
Adaptive Dead-Time
and
Control Logic
R
S
Q
Error
Amplifier
PWM
Comparator
Reference
VIN
VREF = 0.891 V
30 mΩ
OSC
PGND
Powergood
Comparator
PWRGD
VSENSE
0.90 V
Falling
Edge
Deglitch
ref
TPS54610
Hysteresis: 0.03 Vref
SHUTDOWN
35 µs
SYNC
VSENSE
COMP
RT
ADDITIONAL 6A SWIFT DEVICES, (REFER TO SLVS397 AND SLVS400)
DEVICE
TPS54611
TPS54612
TPS54613
OUTPUT VOLTAGE
DEVICE
TPS54614
TPS54615
TPS54616
OUTPUT VOLTAGE
DEVICE
TPS54672
TPS54673
TPS54680
OUTPUT VOLTAGE
DDR memory/Adjustable
Prebias/adjustable
0.9 V
1.2 V
1.5 V
1.8 V
2.5 V
3.3 V
Sequencing/adjustable
RELATED DC/DC PRODUCTS
D
D
D
TPS40000—Low-input, voltage-mode synchronous buck controller
TPS759xx—7.5 A low dropout regulator
PT6440 series—6 A plugin modules
6
TI [ TEXAS INSTRUMENTS ]
