Introduction
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SLVUB41 – July 2017
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Copyright © 2017, Texas Instruments Incorporated
TPS92830-Q1 EVM User's Guide
1.3.1.2.2
5V LDO Input Jumper – J2
Allows V
IN
to connect to a 5-V LDO
1.3.1.2.3
Control Signal Input Jumper – J3
Table 1. Jumper J3
Label
Jumper J3
With Shunt
Without Shunt
DIAGEN
Pins 1–2
Connect to VIN via a resistor divider
Use external control signal
DERATE
Pins 3–4
Connect to VIN via a resistor divider
Use external control signal
PWM1
Pins 5–6
Connect to VIN via a resistor divider
Use external control signal
PWM2
Pins 7–8
Connect to VIN via a resistor divider
Use external control signal
PWM3
Pins 9–10
Connect to VIN via a resistor divider
Use external control signal
FD
Pins 11–12
Connect to VIN via a resistor divider
Use external control signal
ICTRL
Pins 13–14
Connect to off-board bin resistor
Use external control signal or leave floating
FAULT
Pins 15–16
Pull up to 5 V
Use external control signal or leave floating
1.3.1.2.4
PWM Generator Configuration Jumper – J4
To use the TPS92830-Q1 internal PWM dimming function, there are two requirements.
•
Keep the FD pin at a low level and remove the shunt on J3 pins 11–12.
•
Keep all PWM inputs at a high level by keeping the shunts on J3 pins 5–6, pins 7–8 and pins 9–10.
Table 2. Jumper J4
Label
Jumper J4
With Shunt – 1
Without Shunt – 0
Description
Pins 1–2
Pins 3–4
Pins 5–6
200 Hz, 5%
1
0
0
PWM generator outputs 200 Hz, 5% duty-cycle PWM
400 Hz, 20%
0
1
0
PWM generator outputs 400 Hz, 20% duty-cycle PWM
200 Hz, 80%
0
0
1
PWM generator outputs 200 Hz, 80% duty-cycle PWM
Note: Put a shunt on J7 pins 1–2 to realize 80% duty
cycle.
1.3.1.2.5
PWMOUT Jumper – J7
Table 3. Jumper J7
Label
With Shunt – 1
Without Shunt – 0
Description
Pins 1–2
Pins 2–3
RC
1
0
For 200 Hz, 80% PWM configuration, combine with shunt on J4 pins
5–6
5 V
0
1
For PWMOUT pullup under 200 Hz, 5% or 400 Hz, 20%