Datasheet > TPS92690-Q1

TPS92690-Q1

更新时间： 2022-10-12 16:26:40

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
28页	1395K
描述
N-Channel Controller for Dimmable LED Drives

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TPS92690-Q1 数据手册

TPS92690

www.ti.com

SLVSBK3 –DECEMBER 2012

N-Channel Controller for Dimmable LED Drives with Low-Side Current Sense

Check for Samples: TPS92690

FEATURES

DESCRIPTION

The TPS92690/90Q1 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.

•

TPS92690Q1 is an Automotive Grade Product

that is AEC-Q100 Grade 1 Qualified (–40°C to

125°C Operating Junction Temperature)

•

V_INRange from 4.5V to 75V

Adjustable Current Sense (50mV – 500mV)

Low-side Current Sensing

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 TPS92690/90Q1 includes a high-

voltage start-up regulator that operates over a wide

input range of 4.5V to 75V. The PWM controller is

designed for high speed capability including an

oscillator frequency range up to 2.0 MHz. The

TPS92690/90Q1 includes an error amplifier, precision

reference, cycle-by-cycle current limit, and thermal

shutdown.

2-Ω MOSFET Gate Driver

Input Under-Voltage Protection

Output Over-Voltage Protection

Cycle-by-Cycle Current Limit

PWM Dmming Input

Programmable Oscillator Frequency

External Synchronization Capability

Slope Compensation

Programmable Soft-Start

The TPS92690Q1 is AEC-Q100 grade 1 qualified.

TSSOP-16 Exposed Pad Package

APPLICATIONS

•

LED Drivers

Constant Current Regulator: Boost, Cuk,

Flyback, and SEPIC

TYPICAL APPLICATION DIAGRAM

V_IN

V_OUT

R_UV2

R_UVH

nDIM

OVP

VIN

VCC

TPS92690

R_OV2

C_IN

V_OUT

R_UV1

R_OV1

C_BYP

R_T

C_O

I_LED

SYNC

SS/SD

COMP

AGND

ILIM

GATE

PGND

CSP

C_SS

C_CMP

IADJ

VREF

C_LIM

DAP

R_ADJ2

R_ADJ1

R_CS

C_ADJ

R_LIM1

R_LIM2

C_REF

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

UNLESS OTHERWISE NOTED this document contains

PRODUCTION DATA information current as of publication date.

Products conform to specifications per the terms of Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...28

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