TPS92518 Dual Buck LED Controller with SPI Interface, Analog and PWM Dimming | TI.com

TPS92518 (ACTIVE)

Dual Buck LED Controller with SPI Interface, Analog and PWM Dimming

 

Description

The TPS92518 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 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 device has an input range up to 42 V. The TPS92518HV is a high-voltage option with an input range up to 65 V.

Features

  • 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

All trademarks are the property of their respective owners.

View more

Parametrics Compare all products in General lighting LED drivers

 
Input Voltage (Type)
Vin (Min) (V)
Vin (Max) (V)
Iout (Max) (A)
Vout (Min) (V)
Vout (Max) (V)
Regulated Outputs (#)
Topology
Dimming Method
Type
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Vref (V)
Features
Rating
Operating Temperature Range (C)
Pin/Package
TPS92518 TPS92518HV
DC/DC     DC/DC    
6.5     6.5    
42     65    
5     5    
0     0    
39     62    
2     2    
Buck     Buck    
Analog
PWM    
Analog
PWM    
Controller
Inductive    
Controller
Inductive    
50     50    
2000     2000    
3     3    
0.255     0.22    
High Output Accuracy
Precision Dimming Control
Thermal Shutdown    
High Output Accuracy
Precision Dimming Control
Thermal Shutdown    
Catalog     Catalog    
-40 to 125     -40 to 125    
24HTSSOP     24HTSSOP