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TPS53353 データシート(PDF) 23 Page - Texas Instruments

部品番号 TPS53353
部品情報  TPS53353 High-Efficiency 20-A Synchronous Buck Converter With Eco-mode?
PDF  37 Pages
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メーカー  TI [Texas Instruments]
ホームページ  http://www.ti.com
Logo TI - Texas Instruments

TPS53353 データシート(HTML) 23 Page - Texas Instruments

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UDG-11050
RF
TRIP
MODE
VDD
VREG VIN
VIN
VIN
VIN
VIN
VIN
TPS53353
VFB
EN
PGOOD
VBST
N/C
LL
LL
LL
1
2
3
4
5
6
7
8
9
10
11
22
21
20
19
18
17
16
15
14
13
12
VOUT
C5
0.1 mF
VREG
CIN
22 mF
GND
LL
LL
LL
L1
0.44 mH
PA 0513 .441
COUT
4 x 100 mF
Ceramic
R1 14.7 kW
R2
10 kW
R10
100 kW
VIN
R11
NI
C6
NI
R9
2 W
CIN
22 mF
CIN
22 mF
CIN
22 mF
8 V
to
14 V
R6
200 kW
R8
110 kW
R4
NI
C4
4.7 mF
C3
1 mF
VVDD
4.5 V to 25 V
R7
3.01 kW
C1
0.1 mF
C2
1 nF
EN
PGOOD
TPS53353
www.ti.com
SLUSAK2B – AUGUST 2011 – REVISED FEBRUARY 2015
8.2.2 Typical Application Circuit Diagram With Ceramic Output Capacitors
Figure 41. Typical Application Circuit Diagram With Ceramic Output Capacitors
8.2.2.1 Design Requirements
Table 5. Design Parameters
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
INPUT CHARACTERISTICS
VIN
Voltage range
8
12
14
V
Maximum Input current
VIN = 8 V, IOUT = 20 A
4.1
A
IMAX
No load input current
VIN = 14 V, IOUT = 0 A with auto-skip mode
1
mA
OUTPUT CHARACTERISTICS
Output voltage
1.5
V
Line regulation, 8 V
≤ VIN ≤ 15 V
0.1%
VOUT
Output voltage regulation
Load regulation, VIN = 12 V, 0 A ≤ IOUT ≤ 20
0.2%
A with FCCM
VRIPPLE
Output voltage ripple
VIN = 12 V, IOUT = 20 A with FCCM
20
mVPP
ILOAD
Output load current
0
20
A
Output overcurrent
IOCP
26
A
threshold
tSS
Soft-start time
1.4
ms
SYSTEMS CHARACTERISTICS
fSW
Switching frequency
500
kHz
Peak efficiency
VIN = 12 V, VOUT = 1.1 V, IOUT = 10 A
91.87%
η
Full load efficiency
VIN = 12 V, VOUT = 1.1 V, IOUT = 20 A
91.38%
TA
Operating temperature
25
°C
Copyright © 2011–2015, Texas Instruments Incorporated
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