As a member of the SWIFT™ family of dc/dc regulators, the TPS54073 low-input voltage high-output current synchronous buck PWM converter integrates all required active components

TPS54073

Manufacturer Part NumberTPS54073
DescriptionAs a member of the SWIFT™ family of dc/dc regulators, the TPS54073 low-input voltage high-output current synchronous buck PWM converter integrates all required active components
ManufacturerTexas Instruments
TPS54073 datasheet
 


Specifications of TPS54073

Iout(max)(a)14Vin(min)(v)2.2
Vin(max)(v)4Vout(min)(v)0.9
Vout(max)(v)2.5Iq(typ)(ma)13
Switching Frequency(max)(khz)700Switch Current Limit(typ)(a)14.5
TopologyBuckOperating Temperature Range(c)-40 to 85
Pin/package28HTSSOPDuty Cycle(max)(%)90
Regulated Outputs(#)1  
1
Page 1
2
Page 2
3
Page 3
4
Page 4
5
Page 5
6
Page 6
7
Page 7
8
Page 8
9
Page 9
10
Page 10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
Page 6/26

Download datasheet (863Kb)Embed
PrevNext
TPS54073
SLVS547 – FEBRUARY 2005
............................................................................................................................................................................................
VIN
Enable
Comparator
SS/ENA
Falling
Edge
1.2 V
Deglitch
Hysteresis: 0.03 V
2.5 s
VIN UVLO
Comparator
Falling
and
VIN
Rising
2.95 V
Edge
Deglitch
Hysteresis: 0.11 V
2.5 s
Internal/External
Slow-start
(Internal Slow-start Time = 3.35 ms
Reference
VREF = 0.891 V
TPS54073
VSENSE
DRAIN-SOURCE ON-STATE
RESISTANCE
vs
JUNCTION TEMPERATURE
12
VIN = 3.6 V,
PVIN = 2.5 V,
10
I
= 9 A
O
8
6
4
2
0
125
-40 -20
0
20
40
60
80
100
o
T - Junction Temperature - C
J
Figure 1.
6
Submit Documentation Feedback
FUNCTIONAL BLOCK DIAGRAM
SHUTDOWN
Comparator
Thermal
Leading
Shutdown
Edge
150 C
Blanking
100 ns
SHUTDOWN
Start−Up
Driver
SS_DIS
Suppression
+
R Q
S
Error
PWM
Amplifier
Comparator
OSC
Power-Good
Comparator
VSENSE
0.90 V
ref
Hysteresis: 0.03 Vref
COMP
RT
SYNC
TYPICAL CHARACTERISTICS
DRAIN-SOURCE ON-STATE
RESISTANCE
vs
JUNCTION TEMPERATURE
12
VIN = 3.3 V,
PVIN = 2.5 V,
10
I
= 9 A
O
8
6
4
2
0
-40 -20
100 125
0
20
40
60
80
o
T - Junction Temperature - C
J
Figure 2.
Product Folder Link(s):
TPS54073
www.ti.com
VBIAS
AGND
VIN
REG
VBIAS
3.0 − 4.0 V
PVIN
ILIM
2.2 − 4.0 V
BOOT
8 m
L
OUT
PH
C
Adaptive Dead-Time
and
Control Logic
VIN
8 m
PGND
PWRGD
Falling
Edge
Deglitch
SHUTDOWN
35 s
INTERNALLY SET OSCILLATOR
FREQUENCY
vs
JUNCTION TEMPERATURE
750
650
SYNC
2.5 V
550
450
SYNC
0.8 V
350
250
−40
0
25
85
T
− Junction Temperature − C
J
Figure 3.
Copyright © 2005, Texas Instruments Incorporated
V
O
O
125