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TPS54821 Datasheet(PDF) 28 Page - Texas Instruments

Part # TPS54821
Description  TPS54821 4.5 V to 17 V Input, 8 A Synchronous Step Down Converter With Hiccup
PDF  42 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

TPS54821 Datasheet(HTML) 28 Page - Texas Instruments

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background image
0
10
20
30
40
50
60
70
80
90
100
0
1
2
3
4
5
6
7
8
Output Current (A)
VIN = 8 V
VIN = 12 V
VIN = 17 V
G001
V
=12V,
V
=3.3V,
Fsw=480kHz,
roomtemp,noairflow
IN
OUT
25
50
75
100
125
150
0
1
2
3
4
5
6
LoadCurrent- A
−1
−0.8
−0.6
−0.4
−0.2
0
0.2
0.4
0.6
0.8
1
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8
Output Current (A)
VIN = 12 V
G003
0.00001
0.0001
0.001
0.01
0.1
1
10
0.001
0.01
0.1
1
10
TrackInVoltage-V
0.00001
0.0001
0.001
0.01
0.1
1
10
Vout
IdealVsense
Vsense
−0.02
−0.015
−0.01
−0.005
0
0.005
0.01
0.015
0.02
8
9
10
11
12
13
14
15
16
17
Input Voltage (V)
IOUT = 4 A
G004
100
1000
10000
100000
1000000
−60
−50
−40
−30
−20
−10
0
10
20
30
40
50
60
−180
−150
−120
−90
−60
−30
0
30
60
90
120
150
180
Frequency (Hz)
Gain
Phase
G001
28
TPS54821
SLVSB14B – OCTOBER 2011 – REVISED FEBRUARY 2016
www.ti.com
Product Folder Links: TPS54821
Submit Documentation Feedback
Copyright © 2011–2016, Texas Instruments Incorporated
Figure 37. Closed Loop ResponsE, IOUT = 4 A
Figure 38. Line Regulation
Figure 39. Load Regulation
Figure 40. Tracking Performance
Figure 41. Maximum Ambient Temperature vs Load
Current
Figure 42. Efficiency vs Load Current



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