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| 型号： | TPS65055RSMR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 1.8 A DUAL SWITCHING CONTROLLER, 2475 kHz SWITCHING FREQ-MAX, PQCC32 |
| 封装： | 4 X 4 MM, GREEN, PLASTIC, QFN-32 |
| 文件页数： | 41/41页 |
| 文件大小： | 1276K |
| 代理商： | TPS65055RSMR |
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PARAMETER MEASUREMENT INFORMATION
TYPICAL CHARACTERISTICS
TABLE OF GRAPHS
0.0001
0.001
0.01
0.1
1
I
-OutputCurrent- A
O
5V
4.2V
3.6V
3V
0
10
20
30
40
50
60
70
80
90
100
Efficiency-%
T =25°C,
PWMMode,
V
=2.1V
A
O
0
10
20
30
40
50
60
70
80
90
100
Efficiency-%
0.0001
0.001
0.01
0.1
1
I
-OutputCurrent- A
O
T =25°C,
PWM/PFMMode,
V
=2.1V
A
O
5V
4.2V
3.6V
3V
www.ti.com.......................................................................................................................................................................................... SLVS844 – SEPTEMBER 2008
The measurements for the graphs were taken using the EVM in the configuration shown in the functional block
diagram. The inductors used were Coilcraft LPS3010.
FIGURE
η
Efficiency DCDC1 (VO = 2.1 V)
vs Load current / PWM mode
1
η
Efficiency DCDC1 (VO = 2.1 V)
vs Load current / PFM mode
2
η
Efficiency DCDC2 (VO = 1.575 V)
vs Load current / PWM mode
3
η
Efficiency DCDC2 (VO = 1.575 V)
vs Load current / PFM mode
4
η
Efficiency DCDC2 (VO = 1.2 V)
vs Load current / PWM mode
5
η
Efficiency DCDC2 (VO = 1.2 V)
vs Load current / PFM mode
6
Output voltage ripple in PFM mode
Scope plot
7
Output voltage ripple in PWM mode
Scope plot
8
Startup timing DCDC1, DCDC2, LDO1
Scope plot
9
Startup timing LDO1, LDO2, LDO3, LDO4
Scope plot
10
Load transient response DCDC1; PWM
Scope plot
11
Load transient response DCDC1; PFM
Scope plot
12
Load transient response DCDC2; PWM
Scope plot
13
Load transient response DCDC2;PFM
Scope plot
14
Line transient response DCDC1 (VO = 2.1 V)
Scope plot
15
Line transient response DCDC2 (VO = 1.2 V)
Scope plot
16
Load transient response LDO1
Scope plot
17
Load transient response LDO4
Scope plot
18
Line transient response LDO1
Scope plot
19
EFFICIENCY DCDC1 (VO = 2.1 V)
vs
LOAD CURRENT / PWM MODE
LOAD CURRENT / PFM MODE
Figure 1.
Figure 2.
Copyright 2008, Texas Instruments Incorporated
9
Product Folder Link(s): TPS65055
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