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TPS92520-Q1

ACTIVE

1.6-A dual synchronous buck LED driver with SPI

Product details

Number of channels 2 Topology Buck Rating Automotive TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125 Vin (min) (V) 4.5 Vin (max) (V) 65 Vout (min) (V) 0 Vout (max) (V) 61 Iout (max) (A) 1.6 Iq (typ) (mA) 5 Switching frequency (max) (kHz) 2200 Features Fault Detection, LED Open Detection, Precision Dimming Control, Thermal Error Flag, Thermal shutdown
Number of channels 2 Topology Buck Rating Automotive TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125 Vin (min) (V) 4.5 Vin (max) (V) 65 Vout (min) (V) 0 Vout (max) (V) 61 Iout (max) (A) 1.6 Iq (typ) (mA) 5 Switching frequency (max) (kHz) 2200 Features Fault Detection, LED Open Detection, Precision Dimming Control, Thermal Error Flag, Thermal shutdown
HTSSOP (DAD) 32 89.1 mm² 11 x 8.1 HTSSOP (DAP) 32 89.1 mm² 11 x 8.1
  • AEC-Q100 qualified for automotive applications
    • Grade 1: –40°C to 125°C ambient operating temperature
    • Device HBM classification level H1C
    • Device CDM classification level C5
  • Functional Safety-Capable
  • 4.5-V to 65-V wide input voltage range
  • Up to 1.6-A continuous output current with 4% accuracy
  • Adaptive on-time average current control
  • Programmable switching frequency from 100-kHz to 2.2-MHz
  • Advanced dimming operation
    • 10-bit precision analog dimming
    • 10-bit precision internal PWM dimming
    • Supports external PWM dimming input
    • Optimized for external shunt dimming including LED Matrix Manager
  • Cycle-by-cycle switch overcurrent protection
  • Switch thermal protection
  • Serial peripheral interface (SPI)
    • Configurable analog reference, switching frequency, and PWM dimming duty cycle
    • Fault monitoring and reporting
  • Limp-home (LH) and stand-alone mode operation
  • AEC-Q100 qualified for automotive applications
    • Grade 1: –40°C to 125°C ambient operating temperature
    • Device HBM classification level H1C
    • Device CDM classification level C5
  • Functional Safety-Capable
  • 4.5-V to 65-V wide input voltage range
  • Up to 1.6-A continuous output current with 4% accuracy
  • Adaptive on-time average current control
  • Programmable switching frequency from 100-kHz to 2.2-MHz
  • Advanced dimming operation
    • 10-bit precision analog dimming
    • 10-bit precision internal PWM dimming
    • Supports external PWM dimming input
    • Optimized for external shunt dimming including LED Matrix Manager
  • Cycle-by-cycle switch overcurrent protection
  • Switch thermal protection
  • Serial peripheral interface (SPI)
    • Configurable analog reference, switching frequency, and PWM dimming duty cycle
    • Fault monitoring and reporting
  • Limp-home (LH) and stand-alone mode operation

The TPS92520-Q1 is a monolithic dual synchronous buck LED driver with a wide 4.5-V to 65-V operating input voltage range that can independently power two strings of series connected LEDs. The TPS92520-Q1 implements an adaptive on-time average current mode control and is designed to be compatible with shunt FET dimming techniques and LED matrix manager-based dynamic beam headlamps. The adaptive on-time control provides near constant switching frequency that can be set between 100-kHz and 2.2-MHz. Inductor current sensing and closed-loop feedback enables better than ±4% accuracy over wide input voltage, output voltage and ambient temperature range.

The high performance LED driver can independently modulate LED current using both analog or PWM dimming techniques. Linear analog dimming response with over 16:1 range is obtained by programming the 10-bit IADJ value via SPI. PWM dimming of LED current is achieved by directly modulating the corresponding UDIM input pin with the desired duty cycle or by enabling the internal PWM generator circuit. The PWM generator translates the 10-bit PWM register value to a corresponding duty cycle by comparing it to a programmable digital counter.

The TPS92520-Q1 incorporates advanced SPI programmable diagnostic and fault protection featuring: cycle-by-cycle switch current limit, bootstrap undervoltage, LED open, LED short, thermal warning and thermal shutdown. An on-board 10-bit ADC samples critical input parameters required for system health monitoring and diagnostics.

The TPS92520-Q1 is available in a 8.1-mm x 11-mm thermally-enhanced 32-pin HTSSOP package with a 2.75-mm x 3.45-mm top-exposed and bottom-exposed pad.

The TPS92520-Q1 is a monolithic dual synchronous buck LED driver with a wide 4.5-V to 65-V operating input voltage range that can independently power two strings of series connected LEDs. The TPS92520-Q1 implements an adaptive on-time average current mode control and is designed to be compatible with shunt FET dimming techniques and LED matrix manager-based dynamic beam headlamps. The adaptive on-time control provides near constant switching frequency that can be set between 100-kHz and 2.2-MHz. Inductor current sensing and closed-loop feedback enables better than ±4% accuracy over wide input voltage, output voltage and ambient temperature range.

The high performance LED driver can independently modulate LED current using both analog or PWM dimming techniques. Linear analog dimming response with over 16:1 range is obtained by programming the 10-bit IADJ value via SPI. PWM dimming of LED current is achieved by directly modulating the corresponding UDIM input pin with the desired duty cycle or by enabling the internal PWM generator circuit. The PWM generator translates the 10-bit PWM register value to a corresponding duty cycle by comparing it to a programmable digital counter.

The TPS92520-Q1 incorporates advanced SPI programmable diagnostic and fault protection featuring: cycle-by-cycle switch current limit, bootstrap undervoltage, LED open, LED short, thermal warning and thermal shutdown. An on-board 10-bit ADC samples critical input parameters required for system health monitoring and diagnostics.

The TPS92520-Q1 is available in a 8.1-mm x 11-mm thermally-enhanced 32-pin HTSSOP package with a 2.75-mm x 3.45-mm top-exposed and bottom-exposed pad.

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Design & development

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

Evaluation board

LEDMCUEVM-132 — MSP432E401Y MCU communications board for LED evaluation modules

The LEDMCUEVM-132 implements SPI communications that support multiple devices on the bus, UART communications for the LMMs family of devices, CAN transceiver for UART to control LMM family of devices, 4 PWM signals for dimming, multiple IOs, isolated 5-V supply, digital isolators, and a standard (...)

User guide: PDF | HTML
Not available on TI.com
Evaluation board

TPS92520EVM-074 — TPS92520-Q1 buck converter for automotive headlamp 

The TPS92520EVM-074 features a two phase, constant voltage ('CV') boost regulator based on the TPS92682-Q1 dual channel controller powering 2 x TPS92520-Q1 IC's provding 4 current regulated channels of up to 1.6 Amps and 50W per cahnnel (total output power limited to 100W). The TPS92682-Q1 and (...)
User guide: PDF
Evaluation board

TPS92520EVM-133 — TPS92520-Q1 buck converter evaluation module

The TPS92520EVM-133 features the TPS92520-Q1 product providing 2 current regulated channels of up to 1.6 A and 30 W per channel. (Total output power limited to 60 W) TPS92520 are controlled via a SPI interface. The EVM is controlled and monitored via the serial interface bus by the required (...)

User guide: PDF | HTML
Not available on TI.com
Evaluation board

TPS92664EVM-216 — TPS92664-Q1 evaluation module for LED matrix manager with internal EEPROM and oscillator

The TPS92664 evaluation module (EVM) features the TPS92664 16-channel matrix manager device. The EVM kit contains three PCBs and associated cabling to provide and end-to-end power solution for a typical matrix headlight system. The PSIL216 PCB contains four TPS92664 devices which provide pixel (...)

Evaluation board

TPS92667EVM-243 — TPS92667-Q1 evaluation module for LED matrix managers

The TPS92667-Q1 evaluation module features the TPS92667-Q1 and TPS92665-Q1 16-channel matrix manager devices. The EVM kit contains three PCBs and associated cabling to provide and end-to-end power solution for a typical matrix headlight system. The PSIL243 PCB contains one TPS9265-Q1 device and (...)

Driver or library

TPS92520-Q1-DESIGN TPS92520-Q1 Design resources

TPS92520-Q1 Design resources
Supported products & hardware

Supported products & hardware

Products
Automotive LED drivers
TPS92520-Q1 1.6-A dual synchronous buck LED driver with SPI
Driver or library

TPS92520-Q1-FS-NDA TPS92520-Q1 functional safety information

TPS92520-Q1 functional safety information
Supported products & hardware

Supported products & hardware

Products
Automotive LED drivers
TPS92520-Q1 1.6-A dual synchronous buck LED driver with SPI
Simulation model

TPS92520-Q1 Loop Analysis SIMPLIS Model

SLUM727.ZIP (170 KB) - SIMPLIS Model
Design tool

LED-CONTROLLER-GUI TPS92518-Q1, TPS92520-Q1, and TPS92682-Q1 evaluation software

TPS92518-Q1, TPS92520-Q1, and TPS92682-Q1 evaluation software
Supported products & hardware

Supported products & hardware

Products
Automotive LED drivers
TPS92518-Q1 42-V automotive dual buck LED controller with SPI interface, analog and PWM dimming TPS92518HV-Q1 65-V automotive Dual buck LED controller with SPI interface, analog and PWM dimming TPS92520-Q1 1.6-A dual synchronous buck LED driver with SPI TPS92682-Q1 Dual channel constant-Voltage and constant current controller with SPI
Hardware development
Evaluation board
LEDMCUEVM-132 MSP432E401Y MCU communications board for LED evaluation modules
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Reference designs

TIDA-050040 — Automotive LED headlight driver module for halogen replacement reference design

This reference design showcases the TPS92682 and the TPS92520 as a fully self functional three-channel LED driver for headlight applications.  The design is intended to be a low-cost halogen headlight module replacement compatible with an automotive body control module.  The three LED (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-050030 — 120W dual-stage matrix compatible automotive headlight ECU reference design

This reference design details a headlight ECU using an interleaved boost in voltage regulation mode feeding four synchronous buck channels. This design is also capable of matrix headlight control and is mounted to a heatsink and enclosure to emulate an automotive headlight ECU. The TPS92682-Q1 is (...)
Design guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
HTSSOP (DAD) 32 Ultra Librarian
HTSSOP (DAP) 32 Ultra Librarian

Ordering & quality

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Information included:
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  • Assembly location

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