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Product details

Parameters

Vin (Min) (V) 7 Vin (Max) (V) 85 Iout (Max) (A) 5 Vout (Min) (V) 0 Vout (Max) (V) 83 Regulated outputs (#) 1 Topology Buck Dimming method Analog, PWM Power factor correction (Min) Operating temperature range (C) -40 to 125 Switching frequency (Min) (kHz) 50 Switching frequency (Max) (kHz) 1000 Iq (Typ) (mA) 2 Vref (V) 3 open-in-new Find other General lighting LED drivers

Package | Pins | Size

HTSSOP (PWP) 16 32 mm² 5 x 6.4 open-in-new Find other General lighting LED drivers

Features

  • VIN Range from 7 V to 85 V
  • Wide Dimming Range
    • 500:1 Analog Dimming
    • 2500:1 Standard PWM Dimming
    • 20000:1 Shunt FET PWM Dimming
  • Adjustable LED Current Sense Voltage
  • 2-Ω, 1-Apeak MOSFET Gate Drivers
  • Shunt Dimming MOSFET Gate Driver (TPS92641)
  • Programmable Switching Frequency
  • Precision Voltage Reference 3 V ±2%
  • Input UVLO and Output OVP
  • Low Power Shutdown Mode and Thermal Shutdown
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Description

The TPS92640 and TPS92641 devices are high-voltage, synchronous NFET controllers for buck-current regulators. Output current regulation is based on valley current-mode operation using a controlled on-time architecture. This control method eases the design of loop compensation while maintaining nearly constant switching frequency. The TPS92640 and TPS92641 devices include a high-voltage start-up regulator that operates over a wide input range of 7 V to 85 V. The PWM controller is designed for high speed capability, including an oscillator frequency range up to 1 MHz. The deadtime between high side and low side gate driver is optimized to provide very high efficiency over a wide input operating voltage and output power range. The TPS92640 and TPS92641 devices accept both analog and PWM input signals, resulting in exceptional dimming control range. Linear response characteristics between input command and LED current is achieved with true zero LED current using low off-set error amplifier and proprietary PWM dimming logic. Both devices also include precision reference capable of supplying current to low power microcontroller. Protection features include cycle-by-cycle current protection, overvoltage protection, and thermal shutdown. The TPS92641 device includes a shunt FET dimming input and MOSFET driver for high resolution PWM dimming.

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Technical documentation

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Type Title Date
* Datasheet TPS9264x Synchronous Buck Controllers for Precision Dimming LED Drivers datasheet (Rev. A) Oct. 28, 2015
Technical articles Here's how body electronics and lighting technology are changing the driving experience Sep. 26, 2016
Technical articles LED brightness adjustment: high-frequency PWM dimming Aug. 26, 2016
Application notes Brightness Turbo TPS92641 Application Note Jan. 14, 2015
Technical articles Take better selfies with innovative LED flashes Nov. 18, 2014
Technical articles Solving the automotive EMI issues in new cars with all the screens Sep. 10, 2014
User guides User's Guide for TPS92641EVM Nov. 19, 2012

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$49.00
Description

Using TPS92641 to drive 10 LEDs in series at 1A current.


Related Terms:

  • DC DC LED current controller
  • DC DC LED Buck current controller
Features
  • VIN Range 43V to 53V
  • Drive 10 LEDs in series at 1A
  • High efficiency Sync. Rect. Buck
  • Current regulation within 3%
  • Support PWM dimming

Reference designs

REFERENCE DESIGNS Download
Display LED driver reference design
TIDA-080008 — This reference design describes the characteristics, operation, and use of the LED/laser driver. This driver contains our TPS92641 IC configured as a solid-state driver solution providing a 3-channel regulated current output to drive 3 solid-state devices. A high-efficiency single inductor (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
100W Dimmable DC-DC LED Driver with Daylight Harvesting and Wireless Connectivity Reference Design
TIDA-01095 — The TIDA-01095 TI design is a tested DC-DC LED driver subsystem for high power, high efficiency dimmable LED luminaires. It is built-on a wireless SoC platform which can enable intensity adjustment through analog, PWM dimming and control using any BLE smart device or ZiBee. High Bay and Low bay LED (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Single LED with High Current 20A Application using TPS92641
PMP8016 The main purpose of this reference design is to demonstrate a high performance, high current and easy to use, synchronous buck LED driver based on TPS92641. This LED driver is designed for application with using high power single LED within 20A.The operating conditions and performance of the (...)

CAD/CAE symbols

Package Pins Download
HTSSOP (PWP) 16 View options

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