参数资料
型号: TPS2420RSAR
厂商: TEXAS INSTRUMENTS INC
元件分类: 电源管理
英文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC16
封装: 4 X 4 MM, PLASTIC, QFN-16
文件页数: 13/29页
文件大小: 1368K
代理商: TPS2420RSAR
CT
VIN
4
16
U1
TPS2420RSA
UDG-09018
EN
15 V
D1
SMAJ15A
CT
560 nF
IMON
VOUT
13
14
15
12
FLT
PG
R
IMON
63.4 kW
VIN
2
VIN
3
VIN
1
C1
1 mF
GND
5
LTCH
6
IMAX
7
IFLT
8
R
IMAX
57.6 kW
R
IFLT
80.6 kW
11
10
9
VOUT
R1 10 kW
R2 10 kW
D2
MBR130LSFT1
12 V
V
OUT
GND
PowerPAD
GND
12 V
V
IN
SLUS903C – JANUARY 2009 – REVISED AUGUST 2010
www.ti.com
Figure 25. TPS2420 Reference Design, 12-V, 2.5-A Steady State Current, 5-A Max Current
NOTE
D1, D2, and C1 are required only in systems with significant feed and/or load inductance.
To alter parameters IIAX, IFAULT, IIMON or CCT use the formulas in the Pin Description section or use Table 2 .
Table 2. Typical Design Examples
IFAULT (A)
RIFLT (k)
IIMAX (A)
RIMAX (k)
CCT (mF)
TFAULT (ms)
TSD (ms)
ILOAD(max) (A)
RIMON (k)
1
200
2
100
0.022
0.86
22
1
158
1.5
133
2.5
80.6
0.047
1.83
47
1.5
105
2
100
3
65.5
0.1
3.89
100
2
78.7
2.5
80.6
3.5
56.2
0.22
8.56
220
2.5
63.4
3
65.5
4
49.9
0.47
18.28
470
3
52.3
3.5
56.2
4.5
44.2
0.68
26.45
680
3.5
45.3
4
49.9
5
40.2
1
38.9
1000
4
39.2
20
Copyright 2009–2010, Texas Instruments Incorporated
Product Folder Link(s): TPS2420
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