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High-Brightness LED Matrix Manager for Automotive Headlight Systems
SLUSBU2A
September 2014 – February 2016
TPS92661-Q1
PRODUCTION DATA.
CONTENTS
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High-Brightness LED Matrix Manager for Automotive Headlight Systems
1
Features
2
Applications
3
Description
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Controlling the Internal LED Bypass Switches
7.3.2
Internal Switch Resistance
7.3.3
PWM Dimming
7.3.4
PWM Clock
7.3.5
PWM Synchronization
7.3.6
Switch Slew Control
7.3.7
Effect of Phase Shifting LED Duty Cycles
7.3.8
LED Fault Detection and Protection
7.3.8.1
Fault Reporting and Timing
7.3.8.1.1
LED Open Fault Detect Timing Example
7.3.9
Glitch-Free Operation
7.3.9.1
Atomic Multi-Byte Writes
7.3.9.2
Synchronous Updates
7.3.9.2.1
LEDxON = LEDxOFF Boundary Condition
7.3.10
Internal Oscillator and Watchdog Timers
7.3.10.1
Clock Watchdog Timer
7.3.10.2
Communications Watchdog Timer
7.4
Device Functional Modes
7.4.1
Digital Interface Connections
7.4.1.1
Address (ADR0, ADR1, and ADR2 Pins)
7.4.1.2
Clock (CLK Pin)
7.4.1.3
Internal Charge Pump (CPP Pin)
7.4.1.4
Enable (EN Pin)
7.4.1.5
GND Pin
7.4.1.6
Receive (RX Pin)
7.4.1.7
Synchronization (SYNC Pin)
7.4.1.8
Transmit (TX Pin)
7.4.1.9
Primary Power Supply (VIN Pin)
7.4.1.10
On-Board 3.3-V Supply (VCC Pin)
7.4.2
Internal Pin-to-Pin Resistance
7.4.3
UART Physical Layer
7.4.4
UART Clock and Baudrate
7.4.5
UART Communications Reset
7.4.6
UART Device Addressing
7.4.7
UART Communications Protocol
7.4.7.1
Example 1:
7.4.7.2
Example 2:
7.4.7.3
Example 3:
7.4.8
Transaction Frame Description
7.4.9
Frame Initialization Byte
7.4.10
Register Address
7.4.11
Data Bytes
7.4.12
CRC Bytes
7.4.13
Registers
7.4.13.1
LED ON Registers
7.4.13.2
LED OFF Registers
7.4.13.3
Alternate LED On/Off Registers
7.4.13.4
Enable Registers
7.4.13.5
Control Registers
7.4.13.5.1
PWM Clock Divider Register (PCKDIV)
7.4.13.5.2
System Configuration Register (SYSCFG)
7.4.13.6
Default LED State Register (DEFLED)
7.4.13.7
PWM Period Counter Register (TCNT)
7.4.13.8
Diagnostic Registers
7.5
Programming
7.5.1
Read / Write Register Flow Chart
7.5.1.1
Register Write Flow Chart
7.5.1.2
Register Read Flow Chart
7.5.2
Complete Transaction Example
7.5.3
CRC Calculation Programming Examples
7.5.4
Code Examples to Implement Register Reads/Writes
7.6
Register Map
8
Application and Implementation
8.1
Applications Information
8.1.1
Guidelines For Current Source
8.2
Design Examples
8.2.1
12 LED, 1.1-A Application
8.2.2
6 LED, 1.5-A Application
9
Power Supply Recommendations
9.1
General Recommendations
9.2
Internal Regulator
9.3
Power Up and Reset
9.4
VIN Power Consumption
9.5
Initialization Set-Up
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Trademarks
11.2
Electrostatic Discharge Caution
11.3
Export Control Notice
11.4
Glossary
12
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
パッケージ・オプション
メカニカル・データ（パッケージ｜ピン）
PHP|48
MPQF051B
サーマルパッド・メカニカル・データ
PHP|48
PPTD046M
発注情報
SLUSBU2A_pm
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