TPS929160-Q1
ZHCSNG0 – APRIL 2023
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ms as described in the 表 7-2. TI recommends to set the t(BLANK) less than the PWM dimming period which is
programmable by PWMFREQ register, otherwise the OUTXn diagnostics and ADC measurement only operates
properly when PWM duty cycle is set to 100%.
表 7-2. Blank Time
Blank Time
Binary Code 0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111
t(BLANK) (μs)
100
20
30
50
80
150
200
300
500
800
1000 1200 1500 2000 3000 4000
7.3.3.4 Phase Shift PWM Dimming
The TPS929160-Q1 supports both PWM dimming method and phase shift PWM dimming method. In PWM
dimming mode, all 16 current output channels are turned on and off together at the same time at PWM dimming
frequency set by PWMFREQ register as the following figure illustrates.
OUTA0
Current
OUTA1
Current
OUTXn
Current
图 7-3. PWM Dimming Mode
The phase shift PWM dimming mode is enabled by setting PSEN to 1. In phase shift PWM dimming mode,
every three current output channels are formed as one group, so a total of eight current output groups are turned
on and off at PWM dimming frequency set by PWMFREQ register with a constant delay as the following figure
illustrates. The detailed group information is also listed in the below table.
Group A
Current
T(Delay)
Group B
Current
T(Delay)
Group C
Current
T(Delay)
Group D
Current
T(Delay)
Group E
Current
T(Delay)
Group F
Current
T(Delay)
Group G
Current
T(Delay)
T(Delay)
Group H
Current
图 7-4. Phase Shift Dimming Mode
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Product Folder Links: TPS929160-Q1
English Data Sheet: SLVSG60
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