TI-TPS92620-Q1.pdf资源-CSDN文库

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TI的TPS92620-Q1是一款专为汽车应用设计的双通道高侧LED驱动器，具备热共享功能，适用于各种内外部照明场景。该器件满足AEC-Q100一级汽车标准，可在-40°C至125°C的温度范围内稳定工作。 TPS92620-Q1的输入电压范围广泛，支持4.5V到40V，这使得它能够应对汽车电池电压的变化。其独特的热管理设计通过外部分流电阻实现热共享，有效地将功率耗散出去，降低了驱动器自身的温度上升。在故障模式下，该驱动器的电源电流较低，确保了系统在异常情况下的安全性。每个通道可以提供高达250mA的精确电流输出，精度在整个温度范围内保持在±5%，并且可以通过外部电阻独立设置电流。此外，每个通道都有独立的PWM引脚，用于亮度控制，提供了灵活的调光能力。低 dropout 电压是该驱动器的另一大特点，最大dropout仅为600mV，即使在250mA的满载电流下也能保持高效能。该驱动器内置多种诊断和保护功能，包括LED开路检测、LED接地短路检测以及自动恢复机制。此外，还提供了一种诊断使能功能，允许用户自定义故障阈值。故障总线可以配置为“一失效全失效”或“仅失败通道关闭”（N-1），这使得系统可以根据实际需求进行故障响应。同时，TPS92620-Q1还具有热关断保护，以防止在过温情况下损坏设备。操作结温范围为-40°C至150°C，扩展了其在极端环境下的可用性。该驱动器适用于各种汽车照明应用，如后灯、中央高位刹车灯、侧边标记灯、车门把手灯、盲点检测指示灯、充电接口灯，以及车内照明如顶棚控制台和阅读灯等。此外，它也可以用于一般用途的LED驱动器应用。封装信息方面，TPS92620-Q1有两种封装选项：DGN（HVSSOP，12）和DRR（WSON，12）。DGN封装尺寸为3.00mm x 4.00mm，而DRR封装则为3.00mm x 3.00mm，设计者可以根据具体应用需求选择合适的封装形式。 TI的TPS92620-Q1是一款高性能、高可靠性、具有丰富保护特性的汽车级LED驱动器，适用于对温度管理和故障诊断有严格要求的汽车照明系统。它可以与其他TI的LED驱动器系列如TPS9261x-Q1、TPS9262x-Q1、TPS9263x-Q1和TPS92830-Q1配合使用，满足不同应用的需求。

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TPS92620-Q1 Two-Channel, Automotive, High Side LED Driver with Thermal Sharing

1 Features

• AEC-Q100 qualified for automotive applications:

– Temperature grade 1: –40°C to 125°C, T

• Wide input voltage range: 4.5 V to 40 V

• Thermal sharing by external shunt resistor

• Low supply current in fault mode

• Two high-precision current regulation:

– Up to 250-mA current output for each channel

– ±5% accuracy over full temperature range

– Independent current setting by resistor

– Independent PWM pin for brightness control

• Low dropout voltage:

– Maximum dropout: 600 mV for 250 mA

• Diagnostics and protection

– LED open-circuit with auto-recovery

– LED short-to-GND with auto-recovery

– Diagnostic enable with adjustable threshold

– Fault bus configurable as either one-fails–all-fail

or only-failed-channel off (N-1)

– Thermal shutdown

• Operation junction temperature range:–40°C to

150°C

2 Applications

• Automotive exterior rear light: rear lamp, center

high mounted stop lamp, side marker

• Automotive exterior small light: door handle, blind

spot detection indicator, charging inlet

• Automotive interior light: overhead console,

reading lamp

• General-purpose LED driver applications

3 Description

The TPS92620-Q1 two-channel LED driver includes

a unique thermal management design to reduce

temperature rising on the device. The TPS92620-Q1

is a linear driver directly powered by automotive

batteries with large voltage variations to output full

current loads up to 250 mA per channel. External

shunt resistors are leveraged to share output current

and dissipate power out of the driver. The device

full-diagnostic capabilities include LED open, LED

short-to-GND circuit, and device overtemperature

protection.

The one-fails–all-fail feature of TPS92620-Q1 can

work together with other LED drivers, such as

the TPS9261x-Q1, TPS9262x-Q1, TPS9263x-Q1,

and TPS92830-Q1 devices, to address different

requirements.

Package Information

PART NUMBER PACKAGE

(1)

BODY SIZE (NOM)

TPS92620-Q1

DGN (HVSSOP, 12)

(2)

3.00 mm × 4.00 mm

DRR (WSON, 12) 3.00 mm × 3.00 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

(2) Product preview.

IN1

IN2

PWM1

PWM2

RES1

OUT1

RES2

OUT2

SUPPLY

DIAGEN

GND

TPS92620-Q1

4.5 V to 40 V

(SNS1)

(SNS2)

(SUPPLY)

(RES1)

(RES2)

(OUT1)

(OUT2)

FAULT

Typical Application Diagram

Supply Voltage (V)

Power (W) 250mA/Channel

3 6 9 12 15 18 21 24 27 30

0.5

1.5

2.5

3.5

4.5

(DEVICE)

(RESx)

= 55  2LEDs

(RESx)

= 55  2LEDs

(DEVICE)

(RESx)

= 55  3LEDs

(RESx)

= 55  3LEDs

Power Dissipation on Device

TPS92620-Q1

SLVSGW5 – NOVEMBER 2022

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

Table of Contents

1 Features............................................................................1

2 Applications..................................................................... 1

3 Description.......................................................................1

4 Revision History.............................................................. 2

5 Pin Configuration and Functions...................................3

6 Specifications.................................................................. 4

6.1 Absolute Maximum Ratings........................................ 4

6.2 ESD Ratings............................................................... 4

6.3 Recommended Operating Conditions.........................4

6.4 Thermal Information....................................................4

6.5 Electrical Characteristics.............................................5

6.6 Typical Characteristics................................................ 7

7 Detailed Description...................................................... 11

7.1 Overview................................................................... 11

7.2 Functional Block Diagram......................................... 11

7.3 Feature Description...................................................11

7.4 Device Functional Modes..........................................21

8 Application and Implementation.................................. 22

8.1 Application Information............................................. 22

8.2 Typical Applications.................................................. 22

8.3 Power Supply Recommendations.............................26

8.4 Layout....................................................................... 26

9 Device and Documentation Support............................28

9.1 Receiving Notification of Documentation Updates....28

9.2 Support Resources................................................... 28

9.3 Trademarks............................................................... 28

9.4 Electrostatic Discharge Caution................................28

9.5 Glossary....................................................................28

10 Mechanical, Packaging, and Orderable

Information.................................................................... 29

4 Revision History

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.

DATE REVISION NOTES

November 2022 * Initial release.

TPS92620-Q1

SLVSGW5 – NOVEMBER 2022

www.ti.com

2 Submit Document Feedback

Product Folder Links: TPS92620-Q1

6 Specifications

6.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)

(1)

MIN MAX UNIT

Supply SUPPLY –0.3 45 V

High-voltage input DIAGEN, IN1, IN2, PWM1, PWM2 –0.3 V

(SUPPLY)

+ 0.3 V

High-voltage output OUT1, OUT2, RES1, RES2 –0.3 V

(SUPPLY)

+ 0.3 V

Fault bus FAULT –0.3 V

(SUPPLY)

+ 0.3 V

Operating junction temperature –40 150 °C

stg

Storage temperature –40 150 °C

(1) Operation outside the Absolute Maximum Ratings may cause permanent device damage. Absolute Maximum Ratings do not imply

functional operation of the device at these or any other conditions beyond those listed under Recommended Operating Conditions.

If used outside the Recommended Operating Conditions but within the Absolute Maximum Ratings, the device may not be fully

functional, and this may affect device reliability, functionality, performance, and shorten the device lifetime.

6.2 ESD Ratings

VALUE UNIT

(ESD)

Electrostatic discharge

Human-body model (HBM), per AEC Q100-002

(1)

HBM ESD Classification Level 1C

±2000

Charged-device model (CDM), per AEC

Q100-011

CDM ESD Classification Level C4B

All pins ±500

Corner pins (SUPPLY, RES1,

FAULT, PWM2)

±750

(1) AEC Q100-002 indicates that HBM stressing shall be in accordance with the ANSI/ESDA/JEDEC JS-001 specification.

6.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)

MIN NOM MAX UNIT

SUPPLY Device supply voltage 4.5 40 V

IN1, IN2 Sense voltage V

(SUPPLY)

- V

(CS_REG)

PWM1, PWM2 PWM inputs 0 V

(SUPPLY)

DIAGEN Diagnostics enable pin 0 V

(SUPPLY)

OUT1, OUT2, RES1,

RES2

Driver output 0 V

(SUPPLY)

FAULT Fault bus 0 V

(SUPPLY)

Operating ambient temperature, T

–40 125 °C

6.4 Thermal Information

THERMAL METRIC

(1)

TPS92620-Q1

UNITDRR (WSON) DGN (HVSSOP)

12 PINS 12 PINS

θJA

Junction-to-ambient thermal resistance 51.2 39.7 °C/W

θJC(top)

Junction-to-case (top) thermal resistance 50.7 60.9 °C/W

θJB

Junction-to-board thermal resistance 25.2 15.5 °C/W

Junction-to-top characterization parameter 1.3 2.6 °C/W

Junction-to-board characterization parameter 25.2 15.5 °C/W

θJC(bot)

Junction-to-case (bottom) thermal resistance 9.4 2.6 °C/W

(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC package thermal metrics application

report.

TPS92620-Q1

SLVSGW5 – NOVEMBER 2022

www.ti.com

4 Submit Document Feedback

Product Folder Links: TPS92620-Q1

6.5 Electrical Characteristics

(SUPPLY)

= 5 V to 40 V, T

= –40°C to +150°C unless otherwise noted

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

BIAS

(POR_rising)

Supply voltage POR rising threshold 3.6 4.0 V

(POR_falling)

Supply voltage POR falling threshold 3.0 3.4 V

(Quiescent)

Device standby ground current PWM = HIGH 1.2 1.6 mA

(FAULT)

Device supply current in fault mode PWM = HIGH, FAULT externally pulled LOW 0.21 0.32 0.45 mA

LOGIC INPUTS (DIAGEN, PWM)

IL(DIAGEN)

Input logic-low voltage, DIAGEN 1.045 1.1 1.155 V

IH(DIAGEN)

Input logic-high voltage, DIAGEN 1.14 1.2 1.26 V

IL(PWM)

Input logic-low voltage, PWM 1.045 1.1 1.155 V

IH(PWM)

Input logic-high voltage, PWM 1.14 1.2 1.26 V

CONSTANT-CURRENT DRIVER

(OUTx_Tot)

Device output-current for each channel 100% duty cycle 5 250 mA

(CS_REG)

Sense-resistor regulation voltage T

= –40°C to +125°C 144 150 156 mV

ALL ΔV

(CS_c2c)

Channel to channel mismatch ΔV

(CS_c2c)

= 1 – V

(CS_REGx)

/ V

avg(CS_REG)

–3 +3 %

ALL ΔV

(CS_d2d)

Device to device mismatch ΔV

(CS_d2d)

= 1 – V

avg(CS_REG)

/ V

nom(CS_REG)

–4 +4 %

(CS_REG)

Sense-resistor range 0.576 31.2 Ω

(DROPOUT)

Voltage dropout from INx to OUTx, RESx open

current setting of 150 mA 180 350 mV

current setting of 250 mA 300 600 mV

Voltage dropout from INx to RESx, OUTx open

current setting of 150 mA 350 700 mV

current setting of 250 mA 600 1200 mV

(RESx)

Ratio of RESx current to total current

(RESx)

(OUTx_Tot)

, V

(INx)

– V

(RESx)

> 1 V,

Itotal=150mA

95 %

DIAGNOSTICS

(OPEN_th_rising)

LED open rising threshold, V

(IN)

– V

(OUT)

180 300 420 mV

(OPEN_th_falling)

LED open falling threshold, V

(IN)

– V

(OUT)

450 mV

(SG_th_rising)

Channel output short-to-ground rising threshold 1.14 1.2 1.26 V

(SG_th_falling)

Channel output short-to-ground falling threshold 0.855 0.9 0.945 V

(Retry_OUTx)

Channel output V

(OUT)

short-to-ground retry

current

0.64 1.14 1.528 mA

(Retry_RESx)

Channel output V

(RES)

short-to-ground retry

current

0.64 1.14 1.528 mA

FAULT

IL(FAULT)

Logic input low threshold 0.7 V

IH(FAULT)

Logic input high threshold 2 V

(FAULT_rising)

Fault detection rising edge deglitch time 10 µs

(FAULT_falling)

Fault detection falling edge deglitch time 20 µs

(FAULT_pulldown)

FAULT internal pulldown current V

(FAULT)

= 0.4 V 2 3 4 mA

(FAULT_pullup)

FAULT internal pullup current 6 10 14 µA

(FAULT_leakage)

FAULT leakage current V

(FAULT)

= 40 V 0.01 2 µA

TIMING

(PWM_delay_rising)

PWM rising edge delay to 10% of output

current, t

as shown in Figure 7-1

(SUPPLY)

= 12 V, V

(OUT)

= 6 V, V

(CS_REG)

= 150

mV, R

(SNSx)

= 0.6 Ω, and R

(RESx)

= 39 Ω

3.7 µs

(SUPPLY)

= 12 V, V

(OUT)

= 6 V, V

(CS_REG)

= 150

mV, R

(SNSx)

= 30 Ω and R

(RESx)

= 56 Ω

2.2 µs

(PWM_delay_falling)

PWM falling edge delay to 90% of output

current, t

as shown in Figure 7-1

(SUPPLY)

= 12 V, V

(OUT)

= 6 V, V

(CS_REG)

= 150

mV, R

(SNSx)

= 0.6 Ω, and R

(RESx)

= 39 Ω

4.0 µs

(SUPPLY)

= 12 V, V

(OUT)

= 6 V, V

(CS_REG)

= 150

mV, R

(SNSx)

= 30 Ω and R

(RESx)

= 56 Ω

3.6 µs

www.ti.com

TPS92620-Q1

SLVSGW5 – NOVEMBER 2022

Submit Document Feedback

Product Folder Links: TPS92620-Q1

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