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
2
3
4
5
6
7
8
9
10
11
Page 11
12
Page 12
13
Page 13
14
Page 14
15
Page 15
16
Page 16
17
Page 17
18
Page 18
19
Page 19
20
Page 20
21
22
23
24
25
26
Page 15/26

Download datasheet (863Kb)Embed
PrevNext
www.ti.com
............................................................................................................................................................................................
The performance data for
Figure 14
V, VIN = 3.3 V, V
= 1.5 V, f
= 700 kHz, and I
O
s
MEASURED LOOP RESPONSE
vs
FREQUENCY
60
180
Phase
50
150
40
120
30
90
20
60
Gain
10
30
0
0
-10
-30
-20
-60
-30
-90
-40
-120
-150
-50
-180
-60
10
100
1 k
10 k
100 k
1 M
f - Frequency - Hz
Figure 14.
EFFICIENCY
vs
OUTPUT CURRENT
95
90
85
80
75
70
65
60
55
50
0
2
4
6
8
10
12
14
I
- Output Current - A
O
Figure 17.
LOAD TRANSIENT RESPONSE
V (RIPPLE) = 50 mV/div (ac coupled)
O
I = 5 A/div
O
t - Time = 250 s/div
m
Figure 20.
Copyright © 2005, Texas Instruments Incorporated
PERFORMANCE GRAPHS
through
Figure 22
are for the circuit in
= 7 A, T
= 25°C, unless otherwise specified.
O
A
LOAD REGULATION
vs
OUTPUT CURRENT
0.5
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
0
2
4
6
8
10
I
- Output Current - A
O
Figure 15.
INPUT RIPPLE VOLTAGE
PVIN(RIPPLE) = 100 mV/div
(ac coupled)
V
= 2 V/div
I
= 14 A
(PH)
O
t - Time = 500 ns/div
16
Figure 18.
START-UP WAVEFORM
WITH PRECHARGE
V (SS/ENA) = 500 mV/div
V = 500 mV/div
O
t - Time = 5 ms/div
Figure 21.
Product Folder Link(s):
TPS54073
TPS54073
SLVS547 – FEBRUARY 2005
Figure
12. Conditions are PVIN = 2.5
LINE REGULATION
vs
INPUT VOLTAGE
0.3
0.25
0.2
I
= 0 A
O
0.15
0.1
0.05
I
= 7 A
O
0
-0.05
I
= 14 A
-0.1
O
-0.15
-0.2
-0.25
-0.3
12
14
2.2 2.4 2.6 2.8
3
3.2 3.4 3.6 3.8
V
- Output Voltage - V
O
Figure 16.
OUTPUT VOLTAGE RIPPLE
V (RIPPLE) = 10 mV/div (ac coupled)
O
I = 14 A
V
= 2 V/div
(PH)
O
t - Time = 500 ns/div
Figure 19.
OUTPUT INDUCTOR
RIPPLE CURRENT
I = 500 mA/div (ac coupled)
O
V
= 1 V/div
(PH)
t - Time = 500 nsec/div
Figure 22.
Submit Documentation Feedback
4
15