TPS61162A Datasheet, PDF (8/28 Pages) Texas Instruments – Dual-Channel WLED Drivers for Smart Phone

TPS61162A
TPS61163A
SLVSC26 – NOVEMBER 2013
SW
Voltage
20V/div
DC
Min
Feedback
Voltage
100mV/div
DC
Inductor
Current
100mA/div
DC
Output
Current
2mA/div
DC
SWITCHING WAVEFORM
PWM Freq = 20kHz, Duty = 10%
t - Time - 4ms/div
Figure 11.
SW
Voltage
20V/div
DC
Inductor
Current
200mA/div
DC
Output
Voltage
2V/div
AC
Output
Current
20mA/div
DC
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DIMMING TRANSIENT WAVEFORM
PWM Freq = 20kHz,
Duty = 10% - 80% - 10%
t - Time - 400ms/div
Figure 12.
PWM
Voltage
2V/div
DC
Inductor
Current
200mA/div
DC
Output
Voltage
20V/div
DC
Output
Current
20mA/div
DC
STARTUP WAVEFORM
t - Time - 10ms/div
Figure 13.
PWM
Voltage
2V/div
DC
Inductor
Current
200mA/div
DC
Duty = 100%
Output
Voltage
20V/div
DC
Output
Current
20mA/div
DC
STARTUP WAVEFORM
PWM Freq = 20kHz, Duty = 50%
t - Time - 10ms/div
Figure 14.
PWM
Voltage
2V/div
DC
Inductor
Current
200mA/div
DC
Output
Voltage
20V/div
DC
Output
Current
20mA/div
DC
SHUTDOWN WAVEFORM
Duty = 100%
t - Time - 10ms/div
Figure 15.
PWM
Voltage
2V/div
DC
Inductor
Current
200mA/div
DC
Output
Voltage
20V/div
DC
Output
Current
20mA/div
DC
SHUTDOWN WAVEFORM
PWM Freq = 20kHz, Duty = 50%
t - Time - 10ms/div
Figure 16.
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