N-Channel Controller for Dimmable LED Drives with Low-Side Current Sense - TPS92690

TPS92690 (ACTIVE)

N-Channel Controller for Dimmable LED Drives with Low-Side Current Sense

Description

The TPS92690/90Q1 is a high voltage, low-side NFET controller with an adjustable output current sense resistor voltage. Ideal for LED drivers, it contains all of the features needed to implement current regulators based on boost, SEPIC, flyback, and Cuk topologies.

Output current regulation is based on peak current-mode control supervised by a control loop. This methodology eases the design of loop compensation while providing inherent input voltage feed-forward compensation. The TPS92690/90Q1 includes a high-voltage start-up regulator that operates over a wide input range of 4.5V to 75V. The PWM controller is designed for high speed capability including an oscillator frequency range up to 2.0 MHz. The TPS92690/90Q1 includes an error amplifier, precision reference, cycle-by-cycle current limit, and thermal shutdown.

The TPS92690Q1 is AEC-Q100 grade 1 qualified.

Features

  • TPS92690Q1 is an Automotive Grade Product that is
    AEC-Q100 Grade 1 Qualified (–40°C to 125°C
    Operating Junction Temperature)
  • VIN Range from 4.5V to 75V
  • Adjustable Current Sense (50mV – 500mV)
  • Low-side Current Sensing
  • 2-Ω MOSFET Gate Driver
  • Input Under-Voltage Protection
  • Output Over-Voltage Protection
  • Cycle-by-Cycle Current Limit
  • PWM Dmming Input
  • Programmable Oscillator Frequency
  • External Synchronization Capability
  • Slope Compensation
  • Programmable Soft-Start
  • TSSOP-16 Exposed Pad Package

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Parametrics Compare all products in LED Lighting - Illumination

 
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)
UVLO Thresholds On/Off (V)
Special Features
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
TPS92690
DC/DC    
4.5    
75    
5    
3    
72    
1    
Boost
Cuk
Flyback
Sepic    
Analog
PWM    
Inductive    
200    
2000    
2    
2.45    
4.1 / 4.0    
Adjustable Switch Frequency
Enable/Shutdown
Soft Start
Synchronization Pin
Thermal Shutdown    
Catalog    
-40 to 125    
16HTSSOP    
1.45 | 1ku    

Other qualified versions of TPS92690

Version Part Number Definition
Automotive TPS92690-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects

Related end equipment

  • LED Drivers
  • Constant Current Regulator: Boost, Cuk, Flyback, and SEPIC

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