Texas Instruments TPS92830-Q1 User Manual

User's Guide

SLVUB41–July 2017

TPS92830-Q1 EVM User's Guide

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.

Contents

1 Introduction ................................................................................................................... 2

1.1 Features of TPS92830EVM KIT .................................................................................. 2

1.2 Typical Applications ................................................................................................ 2

1.3 TPS92830EVM KIT Description .................................................................................. 2

2 Test Setup .................................................................................................................... 7

3 Board Layout ................................................................................................................. 8

4 Schematic and Bill of Materials........................................................................................... 10

4.1 Schematics......................................................................................................... 10

4.2 Bill of Materials .................................................................................................... 11

List of Figures

1 TPS92830EVM Board....................................................................................................... 3

2 LED Board .................................................................................................................... 5

3 TPS92830EVM Setup....................................................................................................... 7

4 TPS92830EVM Board Layout.............................................................................................. 8

5 LED Board Layout........................................................................................................... 9

6 TPS92830EVM Board Schematic........................................................................................ 10

7 LED Board Schematic ..................................................................................................... 11

1 Jumper J3..................................................................................................................... 4

2 Jumper J4..................................................................................................................... 4

3 Jumper J7..................................................................................................................... 4

4 Jumper J12 ................................................................................................................... 6

5 Jumper J6..................................................................................................................... 6

6 LED String Short-to-GND Jumper ......................................................................................... 6

7 LED String-Open Jumper................................................................................................... 6

8 Shorted-LED Jumper........................................................................................................ 6

9 ICTRL Jumper................................................................................................................ 7

10 TPS92830EVM Parameters................................................................................................ 7

11 TPS92830EVM Board BOM .............................................................................................. 11

12 LED Board BOM............................................................................................................ 14

Trademarks

All trademarks are the property of their respective owners.

SLVUB41–July 2017

Submit Documentation Feedback

List of Tables

TPS92830-Q1 EVM User's Guide

Introduction

1 Introduction

1.1 Features of TPS92830EVM KIT

• Channel-Current Setting by Separate High-Side Sensing Resistors

• LED-Short and -Open Protection and Fault Reporting

• Auto-Recovery After Removing Fault State

• One-Fails–All-Fail With Fault Floating or Only-Failed-Channel-Off LED Failure Mode With Fault Pulled

• Stand-Alone Operation With Full Duty Cycle or PWM Dimming via TPS92830-Q1 Internal PWM

Generator (Useful for Stop or Tail Light and Daytime Running Light (DRL) or Position Light Applications)

• PWM Duty Cycle and Frequency Configurable via Jumper

• PWM Output Optional for Sync Dimming (PWMOUT Must Be Pulled Up to 5 V Through a Resistor)

• Analog Dimming With Potentiometer on LED Board (Can Be Used for Bin Resistor)

• Optional LED Board Thermal Protection via ICTRL

• Current Derating During Overvoltage

• Open-Fault Detection Mask During Dropout Mode

• Compatible With Different Type N-Channel MOSFETs

1.2 Typical Applications

Automotive DRL, position light, stop or tail light, turn indicator, reverse light, fog light, and so forth.

www.ti.com

1.3 TPS92830EVM KIT Description

The TPS92830EVM KIT includes two boards: TPS92830EVM board and LED board. This section describes the connectors and jumpers of the two boards.

TPS92830-Q1 EVM User's Guide

Submit Documentation Feedback

SLVUB41–July 2017

www.ti.com

1.3.1 TPS92830EVM Board

Introduction

1.3.1.1 Connectors

1.3.1.1.1 Power Supply Connector

VBAT (TP22): Input power supply (VBAT) for voltage up to 40 V GND (TP23): Supply ground

1.3.1.1.2 LED 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

1.3.1.2 Jumpers

1.3.1.2.1 LED 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

Figure 1. TPS92830EVM Board

SLVUB41–July 2017

Submit Documentation Feedback

TPS92830-Q1 EVM User's Guide

Introduction

1.3.1.2.2 5V LDO Input Jumper – J2

Allows VINto 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.

www.ti.com

Label

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

1.3.1.2.5 PWMOUT Jumper – J7

Label

Pins 1–2 Pins 2–3

RC 1 0 5 V 0 1 For PWMOUT pullup under 200 Hz, 5% or 400 Hz, 20%

Jumper J4

With Shunt – 1

Without Shunt – 0

With Shunt – 1

Without Shunt – 0

Table 2. Jumper J4

Description

PWM generator outputs 200 Hz, 80% duty-cycle PWM Note: Put a shunt on J7 pins 1–2 to realize 80% duty cycle.

Table 3. Jumper J7

Description

For 200 Hz, 80% PWM configuration, combine with shunt on J4 pins 5–6

TPS92830-Q1 EVM User's Guide

Submit Documentation Feedback

SLVUB41–July 2017

www.ti.com

1.3.1.3 Test Points

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.

1.3.2 LED Board

Introduction

1.3.2.1 Connectors

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

1.3.2.2 Jumpers

1.3.2.2.1 LED Outputs – J12

SLVUB41–July 2017

Submit Documentation Feedback

Figure 2. LED Board

TPS92830-Q1 EVM User's Guide

+ 10 hidden pages

Texas Instruments TPS92830-Q1 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual