TPS65142
SLVSAX5 –JULY 2011
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TYPICAL CHARACTERISTICS
TABLE OF GRAPHS
NAME
CONDITIONS
FIGURE
BOOST CONVERTER (AVDD)
Efficiency vs. Load Current
Load Transient Response
VIN = 3.3 V, VS = 9 V, L = 6.8 µH, f = 1.2 MHz
Figure 1
Figure 2
Figure 3
Figure 4
VIN = 3.3V, VS = 9 V, IS = 50 mA to 250 mA
CCM Operation, VIN = 3.3 V, VS = 9 V, IS = 200 mA, VGH = 24 V, IGH = 10 mA
DCM Operation, VIN = 3.3 V, VS = 9 V, IS = 5 mA, VGH = 24 V, IGH = 1 mA
Switch Node (SW) Wave form
POSITIVE CHARGE PUMP (VGH
)
Output Voltage Ripple
VIN = 3.3V, VGH = 24 V, IGH = 20 mA, VS = 9 V, IS = 100 mA
VIN = 3.3 V, VGH = 21.5 V IGL = 5 mA to 15 mA, VS = 9 V, IS = 100 mA
VIN = 4.2 V, VGH = 24 V, VS = 14 V
Figure 5
Figure 6
Figure 7
Load Transient Response
Output Voltage vs Load Current
NEGATIVE CHARGE PUMP (VGL
)
Output Voltage Ripple
VIN = 3.3 V, VGL = –5.8 V IGL = 20 mA, VS = 9 V, IS = 100 mA
VIN = 3.3 V, VGL = –5.8 V IGL = 5 mA to 15 mA, VS = 9 V, IS = 100 mA
VIN = 4.2 V, VGL = –6 V, VS = 9 V
Figure 8
Figure 9
Figure 10
Load Transient Response
Output Voltage vs Load Current
POWER ON SEQUENCING
Power On Sequence
VIN = 3.3 V, VS = 9 V, VGH = 24 V, VGL = –5.8 V
VIN = 3.3 V, VS = 9 V, VGH = 24 V, VGL = –5.8 V
VIN = 3.3 V, VGH = 24 V, C(VDPM) = 100 nF, RE = 80 KΩ
VIN = 3.3 V, VGH = 24 V, C(VDPM) = 100 nF, RE = 80 KΩ
VIN = 3.3 V, VGH = 24 V, f(VFLK) = 10 KHz, RE = 80 KΩ
VIN = 3.3 V, VIN(LIM) = 2.7 V
Figure 11
Figure 12
Figure 13
Figure 14
Figure 15
Figure 16
Power Off Sequence
Power On Sequence of VGHM
Power Off Sequence of VGHM
Gate Voltage Shaping
Reset (XAO)
WLED DRIVER
Load Efficiency of WLED Driver
Load Efficiency of WLED Driver
Dimming Linearity
VBAT = 10 V, VOUT = 19 V, 25 V and 33 V, L = 10 µH
VBAT = 10 V, 15 V and 19 V, VOUT = 35 V, L = 10 µH
VBAT = 10 V, IOUT = 120 mA, PWM Freq 100 Hz
VBAT = 15 V, IOUT = 120 mA, PWM Freq 1 kHz
VBAT = 12 V, VOUT = 30.6 V, Duty 100%, CO = 4.7 µF
VBAT = 12 V, VOUT = 30.6 V, Duty 50%, CO = 4.7 µF
VBAT = 12 V, ISET = 20 µA
Figure 17
Figure 18
Figure 19
Figure 20
Figure 21
Figure 22
Figure 23
Figure 24
Dimming Linearity
Switching Waveform
Output Ripple at PWM Dimming
Power On Sequence
Open LED Protection
VBAT = 12 V, ISET = 20 µA
10
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