TPS92690 N-channel controller for dimmable LED Drives with low-side current sense | TI.com

TPS92690
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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

Parametrics

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Part number Order Input voltage (type) Vin (Min) (V) Vin (Max) (V) Iout (Max) (A) Vout (Min) (V) Vout (Max) (V) Regulated outputs (#) Topology Dimming method Power factor correction (Min) Type Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Vref (V) UVLO thresholds on/off (V) Features Operating temperature range (C) Package Group Package size: mm2:W x L (PKG)
TPS92690 Order now 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    
-40 to 125     HTSSOP | 16     16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)