The TPS92830-Q1 evaluation module (EVM) helps designers evaluate the operation and performance of
the TPS92830-Q1 device, a linear LED controller with external N-channel MOSFETs for automotive
lighting applications.
VBAT (TP22): Input power supply (VBAT) for voltage up to 40 V
GND (TP23): Supply ground
1.3.1.1.2LED Connector
LED1 (TP24): CH1 output, connects to LED anode
LED2 (TP25): CH2 output, connects to LED anode
LED3 (TP26): CH3 output, connects to LED anode
GND (TP27): LED output ground
1.3.1.2Jumpers
1.3.1.2.1LED Output Jumper – J1
Pin 1: CH1 output, connects to LED anode
Pin 2: CH2 output, connects to LED anode
Pin 3: CH3 output, connects to LED anode
Pin 4: ICTRL function, connects to analog dimming resistor on LED board
Pin 5: LED output ground
DIAGENPins 1–2Connect to VIN via a resistor dividerUse external control signal
DERATEPins 3–4Connect to VIN via a resistor dividerUse external control signal
PWM1Pins 5–6Connect to VIN via a resistor dividerUse external control signal
PWM2Pins 7–8Connect to VIN via a resistor dividerUse external control signal
PWM3Pins 9–10Connect to VIN via a resistor dividerUse external control signal
FDPins 11–12Connect to VIN via a resistor dividerUse external control signal
ICTRLPins 13–14Connect to off-board bin resistorUse external control signal or leave floating
FAULTPins 15–16Pull up to 5 VUse external control signal or leave floating
1.3.1.2.4PWM 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.
All the pins on the TPS92830-Q1 device except CP1N, CP1P, CP2N, and CP2P have test points on the
EVM, which helps users to observe the waveform on the pins.
1.3.2LED Board
Introduction
1.3.2.1Connectors
LED1 (TP1): Positive input of LED board, connects to LED1 on TPS92830EVM
LED2 (TP2): Positive input of LED board, connects to LED2 on TPS92830EVM
LED3 (TP3): Positive input of LED board, connects to LED3 on TPS92830EVM
GND (TP4): LED output ground, connects to GND on TPS92830EVM
LED1Pin 5Positive input of LED board, connects to LED1 on TPS92830EVM board
LED2Pin 4Positive input of LED board, connects to LED2 on TPS92830EVM board
LED3Pin 3Positive input of LED board, connects to LED3 on TPS92830EVM board
ICTRLPin 2Analog dimming function, connects to ICTRL on TPS92830EVM board
GNDPin 1LED output ground, connects to GND on TPS92830EVM board
1.3.2.2.2LED Anode Jumper – J6
LabelJumper J6With ShuntWithout Shunt
LED1Pins 1–2Connect LED1 connector to LED stringDisconnect LED1 connector from LED string
LED2Pins 3–4Connect LED2 connector to LED stringDisconnect LED2 connector from LED string
LED3Pins 5–6Connect LED3 connector to LED stringDisconnect LED3 connector from LED string
1.3.2.2.3LED String Short-to-GND Jumper
Table 6. LED String Short-to-GND Jumper
www.ti.com
Table 4. Jumper J12
Table 5. Jumper J6
LabelJumperWith ShuntWithout Shunt
LED1 SH GNDJ1LED1 string short to GNDNormal operation
LED2 SH GNDJ7LED2 string short to GNDNormal operation
LED3 SH GNDJ13LED3 string short to GNDNormal operation
1.3.2.2.4LED String-Open Jumpers
LabelJumperWith ShuntWithout Shunt
—J5Normal operationLED1 string open
—J11Normal operationLED2 string open
—J17Normal operationLED3 string open
1.3.2.2.5Shorted-LED Jumper
LabelJumperWith ShuntWithout Shunt
SH D1J2Short D1Normal operation
SH D2J3Short D2Normal operation
SH D3J4Short D3Normal operation
SH D4J8Short D4Normal operation
SH D5J9Short D5Normal operation
SH D6J10Short D6Normal operation
SH D7J14Short D7Normal operation
SH D8J15Short D8Normal operation
SH D9J16Short D9Normal operation
Analog dimmingJ1810Connect ICTRL to a potentiometer for analog dimming
Thermal protectionJ1901
2Test Setup
Table 10 shows the typical parameters for the TPS92830EVM. The typical requirement for 3s3p red LED
loads is 9 V–16 V, and 85°C is the maximum ambient temperature for the application. The full-scale
output current of the TPS92830EVM is 300 mA. Users can adjust the output current by using the analog
dimming function or changing the sensing resistors.
The TPS92830EVM can support a minimum 5-V input voltage using one LED. The maximum supported
input voltage is 40 V, but the output current must be controlled and/or the number of LEDs be properly
selected to limit the temperature on the MOSFETs.
Below is the overview of the setup of the TPS92830EVM. Connect the positive and negative outputs of the
dc power supply to TP22 (VBAT) and TP23 (GND) on the TPS92830EVM board. Connect J1 on the
TPS92830EVM board and J12 on the LED board together with the 5-wire cable.
With Shunt – 1
Without Shunt – 0
Connect ICTRL to an NTC resistor for overtemperature
protection
Description
Table 10. TPS92830EVM Parameters
ParameterValue
Input voltage9 V–16 V Typical
Output current0–300 mA
LED3s3p red LED LR H9GP
Maximum ambient temperature85°C
With the default jumper connections, the board should begin operating as soon as proper voltage is
applied to the input. Modify the jumpers for other operating modes.
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