TPS92518-Q1 Texas instruments

TPS92518-Q1

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TPS92518-Q1

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Описание

The TPS92518-Q1 family of parts are dual channel buck LED current controllers with a SPI communications interface. The serial communication interface provides a singular communication path for multichannel and platform lighting driver module (LDM) applications. The TPS92518-Q1 uses a quasi-hysteretic control method that supports switching frequencies ranging from 1 kHz to 2 MHz. This control method enables superior, high frequency shunt FET dimming and also handles the demanding dynamic loads of adaptive LED matrix based headlamp systems. Software programmable SPI set points (Precision Peak Current, Controlled Off-Time and Output Voltage Sense) enables designers to develop a single LED driver solution for multiple load configurations that can be quickly reconfigured for future LED driver design requirements. The TPS92518-Q1 device has an input range up to 42 V. The TPS92518HV-Q1 is a high-voltage option with an input range up to 65 V.

AEC-Q100 Qualified for Automotive Applications
- Grade 1: –40°C to 125°C Ambient Operating Temperature
- Device HBM Classification Level H2
- Device CDM Classification Level C5
Wide Input Voltage Range 6.5 V to 65 V
Two independent Buck LED Controllers
- High Bandwidth, Quasi-Hysteretic Control
- Adjustable High-Side Sense
- Direct PWM Dimming Input
- Cycle-by-Cycle Current Limit
SPI Communications Interface
- Software configurable Set Points (8-bit)
- Digital Calibration and Binning
- Fault Monitoring and Reporting
Advanced, High Precision Dimming
- 10,000:1 PWM Dimming Range
- 255:1 Analog Dimming Range
- High Frequency Shunt FET Dimming

Number of channels	2
Topology	Buck Controller
Rating	Automotive
Operating temperature range (°C)	-40 to 125
Vin (min) (V)	6.5
Vin (max) (V)	42
Vout (min) (V)	0
Vout (max) (V)	39
Iout (max) (A)	5
Iq (typ) (mA)	3
Switching frequency (max) (kHz)	2000
Features	Fault Detection, LED Open Detection, Precision Dimming Control, Thermal Error Flag, Thermal shutdown