Synchronous buck controllers for precision dimming LED Drive with shunt-FET driver
Product details
Parameters
Package | Pins | Size
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
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.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | TPS9264x Synchronous Buck Controllers for Precision Dimming LED Drivers datasheet (Rev. A) | Oct. 28, 2015 |
White paper | Common LED Functions and LED Driver Design Considerations | Sep. 21, 2020 | |
Technical article | Here's how body electronics and lighting technology are changing the driving experience | Sep. 26, 2016 | |
Technical article | LED brightness adjustment: high-frequency PWM dimming | Aug. 26, 2016 | |
Application note | Brightness Turbo TPS92641 Application Note | Jan. 14, 2015 | |
Technical article | Take better selfies with innovative LED flashes | Nov. 18, 2014 | |
Technical article | Solving the automotive EMI issues in new cars with all the screens | Sep. 11, 2014 | |
User guide | 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
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
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Reference designs
Design files
-
download TIDA-080008 BOM.pdf (94KB) -
download TIDA-080008 Assembly Files.zip (101KB) -
download TIDA-080008 Layer Plots.zip (2020KB) -
download TIDA-080008 CAD Files.zip (192KB) -
download TIDA-080008 Gerber.zip (292KB)
Design files
-
download TIDA-01095 BOM.pdf (67KB) -
download TIDA-01095 Assembly Drawing.pdf (240KB) -
download TIDA-01095 PCB .pdf (1075KB) -
download TIDA-01095 CAD Design File.zip (3631KB) -
download TIDA-01095 Gerber.zip (820KB)
Design files
-
download PMP8016 BOM.pdf (34KB) -
download PMP8016 PCB.pdf (226KB) -
download PMP8016 Gerber.zip (588KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
HTSSOP (PWP) | 16 | View options |
Ordering & quality
- RoHS
- REACH
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- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
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Support & training
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