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

 

Recommended alternative parts

  • TPS92691  -  High-side and low-side current sense and series dimming capable, continuous LED current monitoring

Description

The TPS92690 device 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 device includes a high-voltage start-up regulator that operates over a wide input range between 4.5 and 75 V. The PWM controller is designed for high-speed capability including an oscillator frequency range up to 2 MHz. The TPS92690 device includes an error amplifier, precision reference, cycle-by-cycle current limit, and thermal shutdown.

Features

  • Input Voltage Range from 4.5 to 75 V
  • Adjustable Current Sense (50 to 500 mV)
  • Low-Side Current Sensing
  • 2-Ω MOSFET Gate Driver
  • Input Undervoltage Protection
  • Output Overvoltage Protection
  • Cycle-by-Cycle Current Limit
  • PWM Dimming Input
  • Programmable Oscillator Frequency
  • External Synchronization Capability
  • Slope Compensation
  • Programmable Soft-Start Function
  • HTSSOP (PWP), 16-Pin, 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
Boost Controller
Cuk
Flyback
Sepic   
Analog
PWM   
Controller
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   
1.25 | 1ku   

Other qualified versions of TPS92690

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