ZHCSNG0A April 2023 – April 2024 TPS929160-Q1
PRODUCTION DATA
- 1
- 1 特性
- 2 應用
- 3 說明
- 4 Pin Configuration and Functions
- 5 Specifications
-
6 Detailed Description
- 6.1 Overview
- 6.2 Functional Block Diagram
- 6.3
Feature Description
- 6.3.1 Device Bias and Power
- 6.3.2 Constant Current Output
- 6.3.3 PWM Dimming
- 6.3.4 FAIL-SAFE State Operation
- 6.3.5 On-Chip, 8-Bit, Analog-to-Digital Converter (ADC)
- 6.3.6 NSTB Output
- 6.3.7
Diagnostic and Protection in NORMAL State
- 6.3.7.1 VBAT Undervoltage Lockout Diagnostics in NORMAL state
- 6.3.7.2 Low-Supply Warning Diagnostics in NORMAL State
- 6.3.7.3 Supply Undervoltage Diagnostics in NORMAL State
- 6.3.7.4 Reference Diagnostics in NORMAL state
- 6.3.7.5 Pre-Thermal Warning in NORMAL state
- 6.3.7.6 Overtemperature Protection in NORMAL state
- 6.3.7.7 Overtemperature Shutdown in NORMAL state
- 6.3.7.8 LED Open-Circuit Diagnostics in NORMAL state
- 6.3.7.9 LED Short-Circuit Diagnostics in NORMAL state
- 6.3.7.10 Single-LED Short-Circuit Detection in NORMAL state
- 6.3.7.11 EEPROM CRC Error in NORMAL state
- 6.3.7.12 Communication Loss Diagnostic in NORMAL state
- 6.3.7.13 Fault Masking in NORMAL state
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- 6.3.8
Diagnostic and Protection in FAIL-SAFE states
- 6.3.8.1 Supply Undervoltage Lockout Diagnostics in FAIL-SAFE states
- 6.3.8.2 Low-Supply Warning Diagnostics in FAIL-SAFE states
- 6.3.8.3 Supply Undervoltage Diagnostics in FAIL-SAFE State
- 6.3.8.4 Reference Diagnostics in FAIL-SAFE states
- 6.3.8.5 Pre-Thermal Warning in FAIL-SAFE state
- 6.3.8.6 Overtemperature Protection in FAIL-SAFE state
- 6.3.8.7 Overtemperature Shutdown in FAIL-SAFE state
- 6.3.8.8 LED Open-Circuit Diagnostics in FAIL-SAFE state
- 6.3.8.9 LED Short-Circuit Diagnostics in FAIL-SAFE state
- 6.3.8.10 Single-LED Short-Circuit Detection in FAIL-SAFE state
- 6.3.8.11 EEPROM CRC Error in FAIL-SAFE state
- 6.3.8.12 Fault Masking in FAIL-SAFE state
- 69
- 6.3.9 OFAF Setup In FAIL-SAFE state
- 6.3.10 ERR Output
- 6.4 Device Functional Modes
- 6.5 Programming
- 6.6 Register Maps
- 7 Application and Implementation
- 8 Device and Documentation Support
- 9 Revision History
- 10Mechanical, Packaging, and Orderable Information
封裝選項
請參考 PDF 數據表獲取器件具體的封裝圖。
機械數據 (封裝 | 引腳)
- DCP|38
散熱焊盤機械數據 (封裝 | 引腳)
- DCP|38
訂購信息
6.3.3.6 Exponential Brightness Control
The TPS929160-Q1 can also generate PWM duty-cycle output following exponential curve. EXPEN bit selects the dimming method between linear or exponential. When register EXPEN is set to 1, the integrated look-up table provides a one-to-one conversion from 8-bit register PWMOUTXn to 12-bit binary code following exponential increment, as the following figure illustrates. When exponential control path is selected, the PWMLOWOUTXn data is neglected. By using the exponential brightness control, LED brightness change by one LSB is invisible to human eyes especially at low brightness range.
Figure 6-5 PWM Duty Cycle vs 8-Bit Code for
Exponential DimmingDuring power up or in FAIL-SAFE state, the registers EXPEN, and PWMFREQ are automatically reset to their default values stored in their corresponding EEPROM. Both PWMOUTXn and PWMLOWOUTXn are reset to 00h during power up, but load their EEPROM content in FAIL-SAFE state.