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参数资料
| 型号： | TPS5410QDRQ1 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, PDSO8 |
| 封装： | GREEN, PLASTIC, MS-012AA, SOIC-8 |
| 文件页数： | 9/25页 |
| 文件大小： | 758K |
| 代理商： | TPS5410QDRQ1 |
75
80
85
90
95
100
I
-OutputCurrent- A
O
Efficiency-%
0.6
0
0.2
0.4
1
0.8
1.2
1.4
V =30V
I
V =35V
I
V =20V
I
V =14.5V
I
V =25V
I
26
16
-0.03
-0.02
0.01
0.02
0.03
0
20
24
34
28
36
V -InputVoltage-V
I
OutputV
oltageRegulation-%
-0.01
32
14
18
22
30
I
=0.5 A
O
I
=0 A
O
I
=1 A
O
0.6
0
-0.03
-0.02
0.01
0.02
0.03
0
0.2
0.4
1
0.8
1.2
I
-OutputCurrent- A
O
OutputV
oltageRegulation-%
-0.01
V =14.5V
I
V =20V
I
V =30V
I
V =25V
I
V =36V
I
t -Time-1 s/Div
m
V
=100mV/div(ACCoupled)
IN
V
=10V/div
(PH)
ACCoupled
20MHzBWL
t -Time-1 s/Div
m
V
=20mV/div(ACCoupled)
IN
V
=10V/div
(PH)
ACCoupled
20MHzBWL
t -Time-200 s/Div
m
I =500mA/div
O
V =100mV/div
O
ACCoupled
20MHzBWL
www.ti.com......................................................................................................................................................................................... SLVSA23 – SEPTEMBER 2009
Thermal Calculations
The following formulas show how to estimate the device power dissipation under continuous conduction mode
operations. They should not be used if the device is working at light loads in the discontinuous conduction mode.
Conduction Loss: Pcon = IOUT
2 x Rds(on) x V
OUT / VIN
Switching Loss: Psw = VIN x IOUT x 0.01
Quiescent Current Loss: Pq = VIN x 0.01
Total Loss: Ptot = Pcon + Psw + Pq
Given TA => Estimated Junction Temperature: TJ = TA + Rth x Ptot
Given TJMAX = 125°C => Estimated Maximum Ambient Temperature: TAMAX = TJMAX – Rth x Ptot
PERFORMANCE GRAPHS
The performance graphs in Figure 13 - Figure 20 are applicable to the circuit in Figure 11. TA = 25 °C. unless
otherwise specified.
Figure 13. Efficiency vs. Output
Figure 14. Output Voltage
Figure 15. Output Voltage
Current
Regulation % vs. Output Current
Regulation % vs. Input Voltage
Figure 16. Input Voltage Ripple
Figure 17. Output Voltage Ripple
Figure 18. Transient Response, IO
and PH Node, IO = 1 A
Step 0.25 to 0.75 A
Copyright 2009, Texas Instruments Incorporated
17
Product Folder Link(s): TPS5410-Q1
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