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TPS92640PWPR/NOPB

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描述：用于精密调光 LED 驱动器的同步降压控制器 | PWP | 14 | -40 to 125

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TPS92640PWPR/NOPB 概述

用于精密调光 LED 驱动器的同步降压控制器 | PWP | 14 | -40 to 125 DC/DC转换器显示驱动器

TPS92640PWPR/NOPB 规格参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	包装说明：	HTSSOP, TSSOP14,.25
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	Factory Lead Time：	6 weeks
风险等级：	1.62	输入特性：	STANDARD
接口集成电路类型：	LED DISPLAY DRIVER	JESD-30 代码：	R-PDSO-G14
JESD-609代码：	e3	长度：	5 mm
湿度敏感等级：	1	复用显示功能：	NO
功能数量：	1	区段数：	2
端子数量：	14	最高工作温度：	125 °C
最低工作温度：	-40 °C	输出特性：	CONSTANT-CURRENT
封装主体材料：	PLASTIC/EPOXY	封装代码：	HTSSOP
封装等效代码：	TSSOP14,.25	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH	峰值回流温度（摄氏度）：	260
电源：	24 V	认证状态：	Not Qualified
座面最大高度：	1.1 mm	子类别：	Display Drivers
最大压摆率：	3 mA	最大供电电压：	85 V
最小供电电压：	7 V	标称供电电压：	24 V
表面贴装：	YES	温度等级：	AUTOMOTIVE
端子面层：	Matte Tin (Sn)	端子形式：	GULL WING
端子节距：	0.65 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	4.4 mm
Base Number Matches：	1

TPS92640PWPR/NOPB 数据手册

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TPS92640

TPS92641

www.ti.com

SNVS902 – NOVEMBER 2012

TPS92640 / TPS92641 Synchronous Buck Controllers for Precision Dimming LED Drivers

Check for Samples: TPS92640, TPS92641

FEATURES

DESCRIPTION

The TPS92640/41 are high voltage, synchronous

NFET controllers for buck current regulators. Output

current regulation is based on valley current-mode

control with a constant on-timer. This control method

eases the design of loop compensation. The

•

V_INrange from 7V to 85V

•

2Ω, 1A_peakMOSFET gate drivers

Adjustable LED Current Sense voltage

Input UVLO and output OVP

Various dimming modes

TPS92640/41 includes

high-voltage start-up

regulator that operates over a wide input range of 7V

to 85V. The PWM controller is designed for high

speed capability including an oscillator frequency

range up to 1.0 MHz. The TPS92640/41 is optimized

to give superior dimming performance with both

analog and PWM dimming. Both devices include an

error amplifier, precision reference, thermal shutdown

and low power shutdown mode. Additionally, the

TPS92641 provides shunt FET dimming capability.

–

500:1 Analog Dimming

2500:1 Standard PWM dimming

20000:1 Shunt FET PWM dimming

•

Shunt Dimming MOSFET gate driver

Programmable switching frequency

Precision Voltage Reference

Low Power Shutdown Mode and Thermal

Shutdown

APPLICATIONS

•

LED Driver / Constant Current Regulator

Automotive LED Drivers

General LED Illumination

TYPICAL APPLICATION DIAGRAM

VIN

TPS92641

VIN

LED+

RON

BOOT

VCC

UDIM

VOUT

VREF

IADJ

UDIM

Q3*

LED

LOAD

LED-

COMP

SDIM

GND

SDRV

DAP

R10

SDIM*

*TPS92641 only

GND

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.

All trademarks are the property of their respective owners.

PRODUCT PREVIEW information concerns products in the

formative or design phase of development. Characteristic data and

other specifications are design goals. Texas Instruments reserves

the right to change or discontinue these products without notice.

TPS92640

TPS92641

SNVS902 – NOVEMBER 2012

www.ti.com

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

PIN CONFIGURATION

TPS92641

PWP Package

(Top View)

TPS92640

PWP Package

(Top View)

VIN

RON

UDIM

VOUT

VREF

IADJ

UDIM

VOUT

VREF

IADJ

BOOT

VCC

BOOT

VCC

DAP

COMP

GND

COMP

SDIM

GND

SDRV

PIN FUNCTIONS

TPS92640

TPS92641

NAME

DESCRIPTION

VIN

Connect to input voltage. Connect 1µF bypass capacitor

RON

UDIM

VOUT

VREF

IADJ

Connect a resistor to VIN and capacitor to GND to set switching frequency.

Connect resistor divider from VIN to set under-voltage lockout threshold.

Connect resistor divider from VOUT, scaled down feedback of VOUT.

Connect to top of resistor divider for IADJ. Bypass with 100nF ceramic capacitor.

Connect resistor divider from VREF or directly to VREF to set analog dimming level. Can be used for

thermal fold-back also.

COMP Connect ceramic capacitor to GND to set loop compensation.

SDIM

SDRV

GND

PWM dimming input for shunt FET dimming.

Connect to gate of external parallel NFET across LED load used for shunt dimming if desired.

System GND. Connect to DAP.

Connect to positive terminal of sense resistor at the bottom of the LED stack.

Connect to gate of low-side NFET of buck regulator.

VCC

BOOT

Bypass with 2.2µF ceramic capacitor to provide bias supply for controller.

Connect 100nF ceramic capacitor to switch node and diode to VCC to provide boosted voltage for

high-side gate drive.

Connect to switch node of buck regulator.

Connect to gate of high-side NFET of buck regulator.

Place 6-9 vias from pad to GND plane for thermal relief

DAP

Ordering Information

ORDER NUMBER

TPS92640PWP

TPS92640PWPT

TPS92640PWPR

TPS92641PWP

TPS92641PWPT

TPS92641PWPR

PACKAGE TYPE

PACKAGE DRAWING

SUPPLIED AS

94 Units in Rail

14L TSSOP EXP PAD

MXA14A

250 Units on Tape and Reel

2500 Units on Tape and Reel

92 Units in Rail

16L TSSOP EXP PAD

MXA16A

250 Units on Tape and Reel

2500 Units on Tape and Reel

Submit Documentation Feedback

Product Folder Links: TPS92640 TPS92641

TPS92640

TPS92641

www.ti.com

SNVS902 – NOVEMBER 2012

ABSOLUTE MAXIMUM RATINGS⁽¹⁾

If Military/Aerospace specified devices are required, contact the National Semiconductor Sales/Office/Distributors for

availability and specifications.

VALUE

UNITS

–0.3 to 90

VIN, UDIM, SW

–1 (Continuous)

BOOT

–0.3 to 98.5

–0.3 to 90

–2.5 for 100

V/ns

v/ns

98.5 for 100

–1 to +1 (Continuous)

–0.3 to +V_CC(Continuous)

–2.5 for 100

V/ns

V/ms

LG, SDRV, CS

V_CC+ 2.5 for 100

–1 to +1 (Continuous)

–0.3 to 15

VCC

–0.3 to 6

VREF, RON, COMP, VOUT, IADJ, SDIM

–200 to +200 (Continuous)

–0.3 to +0.3 (Continuous)

–2.5 to +2.5 for 100

Internally Limited

–65 to +150

µA

GND

V/ns

Continuous Power Dissipation

Maximum Junction Temperature

Storage Temperature Range

°C

(2)

Maximum Lead Temperature (Soldering and Reflow)

260

ESD Rating

Human Body Model, applicable std. JESD22-A114-C

(1) Absolute Maximum Ratings indicate limits beyond which damage to the component may occur. Operating Ratings are conditions under

which operation of the device is specified and do not imply guaranteed performance limits. For specified performance limits and

associated test conditions, see the Electrical Characteristics table. All voltages are with respect to the potential at the GND pin, unless

otherwise specified.

(2) Refer to TI’s packaging website for more detailed information and mounting techniques.

RECOMMENDED OPERATING CONDITIONS⁽¹⁾

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

MIN

NOM

MAX

UNIT

Input Voltage Range

T_J

Junction Temperature Range

–40

125

°C

(1) Absolute Maximum Ratings indicate limits beyond which damage to the component may occur. Operating Ratings are conditions under

which operation of the device is specified and do not imply guaranteed performance limits. For specified performance limits and

associated test conditions, see the Electrical Characteristics table. All voltages are with respect to the potential at the GND pin, unless

otherwise specified.

Submit Documentation Feedback

Product Folder Links: TPS92640 TPS92641

TPS92640

TPS92641

SNVS902 – NOVEMBER 2012

www.ti.com

ELECTRICAL CHARACTERISTICS⁽¹⁾

Unless otherwise specified V_IN= 24V. Limits appearing in bold type face apply over the entire junction temperature range of

operation, –40°C to 125°C. Specifications appearing in normal type apply for T_A= T_J= 25°C. Datasheet min/max specification

limits are specified by design, test or statistical analysis.

PARAMETER

CONDITIONS

MIN⁽²⁾

TYP⁽³⁾MAX⁽²⁾

UNIT

STARTUP REGULATOR (V_CC

)

V_CCREG

I_CCLIM

V_CCRegulation

V_CCCurrent Limit

I_CC= 10 mA, V_IN= 24V, 85V

V_CC= 0V

7.86

8.5

9.14

V_UDIM= 3.0V,

Static V_IN= 7V/24V/85V

I_Q

Quiescent Current

Shutdown Current

µA

I_SD

V_UDIM= 0V

100

5.04

4.9

V_CCincreasing

V_CCdecreasing

5.90

V_CC-UV

V_CCUVLO Threshold

V_CCUVLO Hysteresis

4.5

V_CC-HYS

0.17

REFERENCE VOLTAGE (V_REF

)

V_REF

Reference Voltage

Current Limit

No Load, V_IN= 7V/24V/85V

V_REF= 0V

2.97

1.3

3.03

2.1

3.09

2.9

I_VREFLIM

ERROR AMPLIFIER (CS, COMP)

V_CSREF

CS Reference Voltage

With respect to GND

VA_DJ/10

µV

V_CSREF-OFF

I_COMP

Error Amp Input Offset Voltage

COMP Sink Current

–600

600

µA

COMP Source Current

Transconductance

110

500

±125

400

µA

g_M-CS

µA/V

kHz

(4)

Linear Input Range

See

Transconductance Bandwidth

-6dB unloaded response⁽⁴⁾

TIMERS / OVER VOLTAGE PROTECTION (RON, VOUT)

t_OFF-MIN

t_ON-MIN

t_ON

Minimum Off-time

CS = 0V

230

235

2.08

Minimum On-time

Programmed On-time

V_VOUT= 2V, R_ON= 25 kΩ, C_ON= 1nF

µs

R_RON

RON Pull-down Resistance

Current Limit Off-time

120

t_CL

270

µs

t_D-ON

RON Thresh - HG Falling Delay

VOUT Over-Voltage Threshold

VOUT Over-Voltage Hysteresis

V_TH-OVP

V_HYS-OVP

VOUT rising

2.85

3.05

0.13

3.25

GATE DRIVER (HG, LG, BOOT, SW)

R_SRC-LG

R_SNK-LG

R_SRC-HG

R_SNK-HG

V_TH-BOOT

V_HYS-BOOT

T_D-HL

LG Sourcing Resistance

LG Sinking Resistance

HG Sourcing Resistance

HG Sinking Resistance

BOOT UVLO Threshold

BOOT UVLO Hysteresis

HG to LG deadtime

LG = High

1.5

6.0

4.5

6.0

4.5

LG = Low

HG = High

3.9

1.1

3.4

1.8

HG = Low

BOOT-SW rising

BOOT-SW falling

HG fall to LG rise

LG fall to HG rise

1.9

T_D-LH

LG to HG deadtime

(1) Absolute Maximum Ratings indicate limits beyond which damage to the component may occur. Operating Ratings are conditions under

which operation of the device is specified and do not imply guaranteed performance limits. For specified performance limits and

associated test conditions, see the Electrical Characteristics table. All voltages are with respect to the potential at the GND pin, unless

otherwise specified.

(2) All limits specified at room temperature (standard typeface) and at temperature extremes (bold typeface). All room temperature limits

are 100% production tested. All limits at temperature extremes are specified via correlation using standard Statistical Quality Control

(SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).

(3) Typical numbers are at 25°C and represent the most likely norm.

(4) These electrical parameters are specified by design, and are not verified by test.

Submit Documentation Feedback

Product Folder Links: TPS92640 TPS92641

TPS92640

TPS92641

www.ti.com

SNVS902 – NOVEMBER 2012

ELECTRICAL CHARACTERISTICS⁽¹⁾(continued)

Unless otherwise specified V_IN= 24V. Limits appearing in bold type face apply over the entire junction temperature range of

operation, –40°C to 125°C. Specifications appearing in normal type apply for T_A= T_J= 25°C. Datasheet min/max specification

limits are specified by design, test or statistical analysis.

PARAMETER

CONDITIONS

MIN⁽²⁾

TYP⁽³⁾MAX⁽²⁾

UNIT

PWM DIMMING (SDIM, SDRV) (TPS92641 only.)

R_SRC-DDRV

t_SDIM-RIS

SDRV Sourcing Resistance

SDIM to SDRV Rising Delay

SDIM to SDRV Falling Delay

SDIM Rising Threshold

SDRV = High

5.6

30.0

100

SDIM rising

SDIM falling

SDIM rising

SDIM falling

t_{SDIM -FALL}

V_SDIM-RIS

V_{SDIM -FALL}

R_SDIM-PU

1.29

1.74

SDIM Falling Threshold

0.5

SDIM Pull-Up Resistance

ANALOG ADJUST (IADJ)

V_ADJ-MAXIADJ Clamp Voltage

R_ADJIADJ Input Impedance

UNDER-VOLTAGE / PWM (UDIM)

2.46

2.54

2.62

MΩ

V_TH-UDIM

I_HYS-UDIM

t_UDIM-RIS

t_UDIM-FALL

V_UDIM-LP

T_UDIM-DET

UDIM Startup Threshold

UDIM rising

1.210

1.276

1.342

UDIM Hysteresis Current

µA

UDIM to HG/LG Rising Delay

UDIM to HG/LG Falling Delay

UDIM Low Power Threshold

UDIM Shutdown Detect Timer

UDIM rising

UDIM falling

168

174

370

260

280

UDIM falling

8.5

THERMAL SHUTDOWN

(5)

T_SD

Thermal Shutdown Threshold

Thermal Shutdown Hysteresis

See

165

°C

(5)

T_HYS

See

THERMAL RESISTANCE

θ_JA-TPS92640Junction to Ambient

θ_JA-TPS92641Junction to Ambient

(5) These electrical parameters are specified by design, and are not verified by test.

14L TSSOP EXP PAD⁽⁶⁾

40.0

37.4

°C/W

(6)

16L TSSOP EXP PAD

(6) Junction-to-ambient thermal resistance is highly board-layout dependent. In applications where high maximum power dissipation exists,

namely driving a large MOSFET at high switching frequency from a high input voltage, special care must be paid to thermal dissipation

issues during board design. In high-power dissipation applications, the maximum ambient temperature may have to be derated.

Maximum ambient temperature (T_A-MAX) is dependent on the maximum operating junction temperature (T_J-MAX-OP= 125°C), the

maximum power dissipation of the device in the application (PD-MAX), and the junction-to ambient thermal resistance of the package in

the application (θ_JA), as given by the following equation: T_A-MAX= T_J-MAX-OP– (θ_JA× P_D-MAX).

Submit Documentation Feedback

Product Folder Links: TPS92640 TPS92641

TPS92640

TPS92641

SNVS902 – NOVEMBER 2012

www.ti.com

FUNCTIONAL BLOCK DIAGRAM

V_IN

370mV

1.276V

2.54V

TPS92640, TPS92641

VOLTAGE

REFERENCES

3.03V

V_CC

V_DD

VCC BIAS

REGULATOR

VREF

VCC

VIN

COMP

IADJ

THERMAL

SHUTDOWN

VCC UVLO

V_SW

PWM_DIM

2.54V

GATE DRIVE UVLO

BOOT

F_SW

DEAD TIME /

LEVEL SHIFT

t_ON

H.S.

Driver

Shutdown

370mV

t_OFF

13ms FILTER

LGATE Enable

V_SW

21µA

PWM_DIM / UVLO

UDIM

RON

V_CC

1.276V

DEAD

TIME

L.S.

Driver

LOGIC

t_ON_ Reset

End t_ON

GND

t_ON_Reset

LEB TIMER

VOUT

OVP

3.05V

TPS92641 ONLY

V_DD

V_CC

PWM

LOGIC

SDIM

SDRV

1.276V

Submit Documentation Feedback

Product Folder Links: TPS92640 TPS92641

TPS92640

TPS92641

www.ti.com

SNVS902 – NOVEMBER 2012

TPS92640 - Precision Analog Dimming Application

V_IN

VIN

TPS92640

RON

UDIM

VOUT

BOOT

VCC

R_OFF

I_LED

VREF

IADJ

DAP

COMP

GND

TPS92640 – PWM Dimming Application with Thermal Fold-back

V_IN

VIN

TPS92640

RON

UDIM

VOUT

BOOT

VCC

I_LED

VREF

IADJ

DAP

COMP

GND

Submit Documentation Feedback

Product Folder Links: TPS92640 TPS92641

TPS92640

TPS92641

SNVS902 – NOVEMBER 2012

www.ti.com

TPS92641 – Shunt FET PWM Dimming Application

V_IN

VIN

TPS92641

RON

UDIM

VOUT

VREF

IADJ

BOOT

VCC

I_LED

GND

COMP

DAP

SDRV

SDIM

Submit Documentation Feedback

Product Folder Links: TPS92640 TPS92641

TPS92640

TPS92641

www.ti.com

SNVS902 – NOVEMBER 2012

TPS92640 – AC/DC TRIAC Dimming Application (with LM3450)

Optical

Isolation

V_REF

BIAS

TRIAC

dimmed AC

Line

V_DC

DIM

HOLD

PWM

VIN

TPS92640

FLT1

FLT2

V_ADJ

V_AC

ZCD

RON

UDIM

VOUT

Optical

Isolation

PWM

V_CC

BOOT

LM3450

GATE

VCC

GND

I_SEN

I_LED

VREF

IADJ

COMP

DAP

COMP

GND

Submit Documentation Feedback

Product Folder Links: TPS92640 TPS92641

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TPS92640PWPR/NOPB CAD模型

原理图符号

PCB 封装图

TPS92640PWPR/NOPB 替代型号

型号	制造商	描述	替代类型	文档
TPS92640PWPT/NOPB	TI	用于精密调光 LED 驱动器的同步降压控制器 \| PWP \| 14 \| -40 to 12	完全替代
TPS92640PWP/NOPB	TI	用于精密调光 LED 驱动器的同步降压控制器 \| PWP \| 14 \| -40 to 12	完全替代
TPS92641PWPR/NOPB	TI	用于精密调光 LED 驱动器的同步降压控制器，带并联 FET 驱动器 \| PWP \| 16	类似代替

TPS92640PWPR/NOPB 相关器件

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TPS92640PWPT/NOPB	TI	用于精密调光 LED 驱动器的同步降压控制器 \| PWP \| 14 \| -40 to 125	获取价格
TPS92641	TI	Synchronous Buck Controllers for Precision Dimming LED Drivers	获取价格
TPS92641PWP	TI	Synchronous Buck Controllers for Precision Dimming LED Drivers	获取价格
TPS92641PWP/NOPB	TI	用于精密调光 LED 驱动器的同步降压控制器，带并联 FET 驱动器 \| PWP \| 16 \| -40 to 125	获取价格
TPS92641PWPR	TI	Synchronous Buck Controllers for Precision Dimming LED Drivers	获取价格
TPS92641PWPR/NOPB	TI	用于精密调光 LED 驱动器的同步降压控制器，带并联 FET 驱动器 \| PWP \| 16 \| -40 to 125	获取价格
TPS92641PWPT	TI	Synchronous Buck Controllers for Precision Dimming LED Drivers	获取价格
TPS92641PWPT/NOPB	TI	用于精密调光 LED 驱动器的同步降压控制器，带并联 FET 驱动器 \| PWP \| 16 \| -40 to 125	获取价格
TPS92642-Q1	TI	汽车类同步降压红外 LED 驱动器	获取价格