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| TPS65642 Datasheet, PDF (14/70 Pages) Texas Instruments – LCD Bias with Integrated Gamma Reference for Notebook PCs, Tablet PCs and Monitors | |||
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TPS65642
SLVSBX6 â JULY 2013
Boost Converter 1 â Switching Waveforms
VIN = 3.3 V, AVDD = 8.1 V, RL = 820 Ω, FREQ = 1
www.ti.com
Boost Converter 1 â Switching Waveforms
VIN = 3.3 V, AVDD = 8.1 V, RL = 82 Ω, FREQ = 1
Figure 4-13.
Figure 4-14.
Boost Converter 1 â Switching Frequency
VIN = 2.6 V to 6 V, AVDD = 6 V, 8 V, 9.1 V, RL = 82 Ω
1,500
1,300
1,100
900
700
500
L=Toko 1269AS-H-24R27M
300
2.5
3.0
3.5
4.0
AVDD = 6.0 V (FREQ=1)
AVDD = 8.0 V (FREQ=1)
AVDD = 9.1 V (FREQ=1)
AVDD = 6.0 V (FREQ=0)
AVDD = 8.0 V (FREQ=0)
AVDD = 9.1 V (FREQ=0)
4.5
5.0
5.5
6.0
VIN - Input Voltage - V
G415
Figure 4-15.
spacer
Buck Converter 1 â Efficiency
VIN = 3.4 V, VCORE = 1 V, 1.1 V, 1.2 V, 1.3 V, ICORE = 1 mA to 500
mA
100
90
80
70
60
50
40
30
20
10
L=Toko 1269AS-H-2R2M
0
0 50 100 150 200 250 300 350
ICORE - Output Current - mA
Figure 4-16.
spacer
VCORE = 1.0 V
VCORE = 1.1 V
VCORE = 1.2 V
VCORE = 1.3 V
400 450 500
G416
Buck Converter 1 â Efficiency
VIN = 5 V, VCORE = 1 V, 1.1 V, 1.2 V, 1.3 V, 1.3 V, ICORE = 1 mA to
500 mA
100
90
80
70
60
50
40
30
20
10
L=Toko 1269AS-H-2R2M
0
0 50 100 150 200 250 300 350
ICORE - Output Current - mA
Figure 4-17.
spacer
VCORE = 1.0 V
VCORE = 1.1 V
VCORE = 1.2 V
VCORE = 1.3 V
400 450 500
G417
Buck Converter 1 â Line Regulation
VIN = 2.6 V to 6 V, VCORE = 1.1 V, ICORE = 300 mA
1.15
1.14
1.13
1.12
1.11
1.10
1.09
1.08
1.07
1.06
1.05
L=Toko 1269AS-H-4R7M
2.5
3
3.5
4
4.5
5
5.5
6
VIN - Input Voltage - V
G418
Figure 4-18.
spacer
14
Typical Characteristics
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Product Folder Links: TPS65642
Copyright © 2013, Texas Instruments Incorporated
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