参数资料
型号: TPS51317RGBR
厂商: Texas Instruments
文件页数: 18/28页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ 6A 20VQFN
标准包装: 3,000
系列: D-Cap+™
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 0.6 V ~ 2 V
输入电压: 4.5 V ~ 6.5 V
PWM 型: 混合物
频率 - 开关: 800kHz,1MHz,1.2MHz,1.5MHz
电流 - 输出: 6A
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 20-VFQFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 20-VQFN(3.5x4.0)

SLUSAH9 – MARCH 2011
95
TYPICAL CHARACTERISTICS
95
90
85
80
75
70
65
60
55
50
45
T A = 25°C
V IN = 3.3 V
Mode 1
Mode 3
Mode 4
Mode 7
Mode 8
90
85
80
75
70
65
60
55
50
45
T A = 25°C
V IN = 5 V
Mode 1
Mode 3
Mode 4
Mode 7
Mode 8
40
0.01
0.1 1
10
40
0.01
0.1 1
10
1.50
Output Current (A)
Figure 13. Efficiency vs Output Current
Mode 1
1.50
Output Current (A)
Figure 14. Efficiency vs Output Current
Mode 1
1.25
1.00
0.75
0.50
0.25
Mode 3
Mode 4
Mode 7
Mode 8
T A = 25°C
V IN = 3.3 V
1.25
1.00
0.75
0.50
0.25
Mode 3
Mode 4
Mode 7
Mode 8
T A = 25°C
V IN = 5 V
0.00
0.1
1
10
0.00
0.1
1
10
Output Current (A)
Figure 15. Power Loss
Output Current (A)
Figure 16. Power Loss
50
40
30
20
10
Gain
400
350
300
250
60
50
40
30
20
Gain
360
310
260
210
0
Phase
200
10
160
-10
-20
-30
25°C
150
100
0
-10
-20
-30
Phase
25°C
110
60
-40
-10°C
50
-40
-10°C
10
85°C
85°C
-50
0
-50
-40
1000
10 k
100 k
1M
10 M
1000
10 k
100 k
1M
10 M
Frequency (Hz)
Figure 17. Bode Plot (Non-Droop Mode) V IN = 5 V,
V OUT = 0.8 V, I LOAD = 5 A
Frequency (Hz)
Figure 18. Bode Plot (Droop Mode), V IN = 5 V,
V OUT = 0.8 V, I LOAD = 5 A
18
Product Folder Link(s): TPS51317
Copyright ? 2011, Texas Instruments Incorporated
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