TLD5098EP [INFINEON]

LED Driver,;


型号：	TLD5098EP
厂家：	Infineon
描述：	LED Driver, 驱动接口集成电路
文件：	总42页 (文件大小：1197K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

LITIX™ Power

TLD5098EP- Multitopology LITIX™ Power DC/DC Controller IC

Overview

Description

The TLD5098EP is a flexibly usable DC/DC boost controller with built in

diagnosis and protection features especially designed to drive LEDs.

It is designed to support fixed current and fixed voltage configurations in

multiple topologies such as Boost, Buck, Buck-Boost, SEPIC and Flyback by simply adjusting the external

components. The TLD5098EP drives a low side n-channel power MOSFET from an internal 5 V linear regulator.

The switching frequency is adjustable in the range from 100 kHz to 500 kHz and can also be synchronized to

an external clock source.

The TLD5098EP can be flexibly dimmed by means of analog and PWM dimming; an enable function reduces

the shut-down current consumption to I_{Q_OFF}< 10 µA.

The current mode control scheme of this device provides a stable regulation loop maintained by small

external compensation components. Additionally an integrated soft start feature limits the current peak as

well as voltage overshoot at start-up. This IC is suited for use in the harsh automotive environments.

L_BO

D_BO

T_DIM2

V_IN

V_IN= 4.5V to 45V

C_IN

C_BO

D_Z

R_DIM2

I_LED

T_SW

SWO

SWCS

R_FB

V_REF

V_IVCC

R_CS

R_DIM1

V_IVCC

R_A

R_OVH

SGND

OVFB

Short

D₁

SET

GND

R_B

R_OVL

D₂

D₃

D₄

D₅

D₆

D₇

D₈

D₉

D₁₀

IC₁

TLD5098

V_IVCC

IC₂

Microcontroller

(e.g. XC866)

PWMI

FBH

IVCC

Digital Dimming

Clock / Spread Spectrum

EN / PWMI

R_POL

C_IVCC

D_POL

FREQ / SYNC

COMP

C_COMP

FBL

PWMO

T_DIM1

R_FREQ

R_COMP

GND

LED load seperated

via wire harness

Figure 1

Typical application: Boost LED driver with short circuit protection circuitry

Type

Package

Marking

TLD5098EP

PG-TSDSO-14

TLD5098

Datasheet

www.infineon.com

Rev. 1.00

2018-12-13

LITIX™ Power

TLD5098EP

Potential applications

•

Automotive exterior and interior lighting

General illumination

General purpose current/voltage controlled DC/DC driver

Features

•

Fixed current or fixed voltage configuration in Boost, Buck, Buck-Boost, SEPIC and Flyback topology

Drives low-side external n-Channel switching MOSFET from internal 5 V voltage regulator

Flexible switching frequency range, 100 kHz to 500 kHz or synchronization with external clock source

Wide input voltage range from 4.5 V to 45 V

Enable & PWM function with very low shutdown current: I_{Q_OFF}< 10 µA and internal start-up

Analog dimming and PWM dimming feature to adjust average LED current

PWMO Gate driver for PWM dimming and output disconnection

Integrated protection and diagnostic functions

300 mV high-side current sense

Available in a small thermally enhanced 14-pin PG-TSDSO-14 package (RoHS compliant)

Table 1

Feature

Product summary

Symbol

V_IN

Range

Nominal supply voltage range

Extended supply voltage range

8 V ... 34 V

V_IN

4.5 V ... 45 V

_IVCC> V_IVCC,RTH,d; parameter deviations possible

Switching frequency range

f_FREQ

100 kHz ... 500 kHz oscillator frequency adjustment

range

250 kHz ... 500 kHz synchronization frequency

capture range

Maximum duty cycle

D_max,fixed

91% ...95% fixed frequency mode

88% synchronization mode

380 mA

D_max,synced

Typical gate driver peak sourcing current I_SWO,SRC

Typical gate driver peak sinking current I_SWO,SNK

550 mA

Protection and diagnostic functions

•

Open circuit detection

Output overvoltage protection

Short to GND protection

Overtemperature shutdown

Electrostatic discharge (ESD) protection

Product validation

Qualified for automotive applications. Product validation according to AEC-Q100/101.

Datasheet

Rev. 1.00

2018-12-13

LITIX™ Power

TLD5098EP

Table of contents

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3.1

3.2

Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Pin assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Pin definitions and functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

General product characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Functional range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Thermal resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.1

4.2

4.3

5.1

5.2

Switching regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Oscillator and synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Typical performance characteristics of oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

6.1

6.2

6.3

7.1

7.2

Enable and dimming function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

8.1

8.2

Linear regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

9.1

9.2

Protection and diagnostic functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Analog dimming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Purpose of analog dimming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

10.1

10.2

10.3

Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

11.1

Further application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Package outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Datasheet

Rev.1.00

2018-12-13

LITIX™ Power

TLD5098EP

Block diagram

LDO

IVCC

SWO

Power on

reset

Internal

supply

EN_INT/

PWM_INT

On/Off

logic

EN / PWMI

Power switch

gate driver

Soft

start

Oscillator

FREQ/SYNC

PWM

generator

SWCS

SGND

Switch current error

amplifier

Slope

comp.

Thermal

protection

Leading edge

blanking

Overvoltage

protection

OVFB

Reference current

generator

SET

Open load + Short to

GND detection

FBH

FBL

Feedback voltage error

amplifier

COMP

EN_INT/

PWM_INT

Dimming switch

gate driver

PWMO

GND

Figure 2

Block diagram TLD5098EP

Datasheet

Rev. 1.00

2018-12-13

LITIX™ Power

TLD5098EP

Pin configuration

3.1

Pin assignment

IVCC

SWO

EN/PWMI

GND

SGND

SWCS

FREQ/SYNC

PWMO

FBH

SET

OVFB

COMP

FBL

Figure 3

Pin configuration TLD5098EP

3.2

Pin definitions and functions

Table 2

Pin definition and function

Symbol

Direction Function

IVCC

Output

Internal LDO

Used for internal biasing and gate drive. Bypass with external

capacitor. Pin must not be left open

SWO

Output

–

Switch gate driver

Connect to gate of external switching MOSFET

SGND

SWCS

PWMO

FBH

Current Sense Ground

Ground return for switch current sense

Input

Output

Input

Current Sense

Detects the peak current through switch

PWM Dimming

Connect to gate of external MOSFET

Voltage Feedback Positive

Non inverting Input (+)

FBL

Voltage Feedback Negative

Inverting Input (-)

COMP

Compensation

Connect R and C network to pin for stability

Datasheet

Rev. 1.00

2018-12-13

LITIX™ Power

TLD5098EP

Pin configuration

Table 2

Pin definition and function

Symbol

Direction Function

OVFB

Input

Overvoltage Protection Feedback

Connect to resistive voltage divider to set overvoltage threshold

SET

Input

Analog Dimming

Load current adjustment Pin. Pin must not be left open. If analog

dimming feature is not used connect to IVCC pin

FREQ / SYNC

Input

Frequency Select or Synchronization

Connect external resistor to GND to set frequency.

Or apply external clock signal for synchronization within frequency

capture range

GND

–

Ground

Connect to system ground

EN / PWMI

Input

Enable or PWM

Apply logic HIGH signal to enable device or PWM signal for dimming

LED

Input

–

Supply Input

Supply for internal biasing

Exposed Pad

Connect to external heat spreading GND Cu area (e.g. inner GND layer

of multilayer PCB with thermal vias)

Datasheet

Rev. 1.00

2018-12-13

LITIX™ Power

TLD5098EP

General product characteristics

4.1

Absolute maximum ratings

T_J= -40°C to +150°C; all voltages with respect to ground, positive current flowing into pin (unless otherwise

specified)

Table 3

Absolute maximum ratings¹⁾

Parameter

Symbol

Min.

Values

Typ.

Unit Note or

Test Condition

Number

Max.

Voltage

V_IN

-0.3

-40

–

P_4.1.1

P_4.1.2

P_4.1.3

Supply input

EN / PWMI

Enable or PWM input

V_EN

–

FBH-FBL;

Feedback Error

Amplifier Differential

V_FBH-V_FBL-40

The maximum delta

must not exceed 61 V.

Differential signal (not

referred to GND)

FBH;

V_FBH

-40

–

The difference

P_4.1.4

P_4.1.5

Feedback error

amplifier positive input

between V_FBHand V_FBL

must not exceed 61 V,

refer to P_4.1.3

FBL

V_FBL

The difference

Feedback error

amplifier negative input

between V_FBHand V_FBL

must not exceed 61 V,

refer to P_4.1.3

FBH and FBL current

I_FBL, I_FBH

–

t < 100 ms,

P_4.1.6

P_4.1.7

_FBH-V_FBL= 0.3 V

OVFB

V_OVP

-0.3

5.5

6.2

5.5

6.2

5.5

–

Overvoltage feedback

input

OVFB

V_OVP

–

t < 10 s

P_4.1.8

P_4.1.9

P_4.1.10

P_4.1.11

Overvoltage feedback

input

SWCS

Switch current sense

input

V_SWCS

V_SWO

–

SWCS

Switch current sense

input

t < 10 s

–

SWO

Switch gate drive

output

Datasheet

Rev. 1.00

2018-12-13

LITIX™ Power

TLD5098EP

General product characteristics

Table 3

Absolute maximum ratings¹⁾

Parameter

Symbol

Values

Typ.

–

Unit Note or

Test Condition

Number

Min.

Max.

SWO

V_SWO

-0.3

6.2

t < 10 s

P_4.1.12

Switch gate drive

output

SGND

V_SGND

-0.3

–

0.3

–

P_4.1.13

Current sense switch

GND

COMP

Compensation input

V_COMP

-0.3

–

5.5

6.2

5.5

–

P_4.1.14

P_4.1.15

P_4.1.16

COMP

Compensation input

t < 10 s

–

FREQ / SYNC;

Frequency and

synchronization input

V_FREQ

V_SYNC

FREQ / SYNC;

Frequency and

V_FREQ

V_SYNC

-0.3

–

6.2

t < 10 s

P_4.1.17

synchronization input

PWMO

PWM dimming output

V_PWMO

-0.3

–

5.5

6.2

–

P_4.1.18

P_4.1.19

PWMO

t < 10 s

PWM dimming output

SET

V_SET

-0.3

–

P_4.1.20

P_4.1.21

IVCC

V_IVCC

5.5

Internal linear voltage

regulator output

IVCC

V_IVCC

-0.3

–

6.2

t < 10 s

P_4.1.22

Internal linear voltage

regulator output

Temperature

Junction temperature T_J

-40

-55

–

150

°C

–

P_4.1.23

P_4.1.24

Storage temperature

T_stg

ESD Susceptibility

ESD resistivity of all pins V_ESD,HBM

-2

-4

–

HBM²⁾

P_4.1.25

P_4.1.26

ESD resistivity of IN,

EN/PWMI, FBH, FBL and

SET pin to GND

V_ESD,HBM

ESD resistivity

V_{ESD_CDM}-500

V_{ESD_CDM}-750

–

500

750

CDM³⁾

P_4.1.27

P_4.1.28

ESD resistivity corner

pins

1) Not subject to production test, specified by design.

2) ESD susceptibility, Human Body Model “HBM” according to AEC Q100-002

3) ESD susceptibility, Charged Device Mode “CDM” according to AECQ100-011

Datasheet

Rev. 1.00

2018-12-13

LITIX™ Power

TLD5098EP

General product characteristics

Note:

Stresses above the ones listed here may cause permanent damage to the device. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

1. Integrated protection functions are designed to prevent IC destruction under fault conditions described in the

data sheet. Fault conditions are considered as “outside” normal operating range. Protection functions are

not designed for continuous repetitive operation.

4.2

Functional range

Table 4

Functional range

Symbol

Parameter

Values

Typ.

–

Unit Note or

Test Condition

Number

Min.

Max.

Extended supply

voltage range

V_IN

4.5

> V_IVCC,RTH,d

P_4.2.1

P_4.2.2

P_4.2.3

P_4.2.4

IVCC

Nominal supply

voltage range

V_IN

–

Feedback voltage

input

V_FBH;V_FBL

Junction

T_J

-40

150

°C

temperature

1) Not subject to production test, specified by design

Note:

Within the functional range the IC operates as described in the circuit description. The electrical

characteristics are specified within the conditions given in the related electrical characteristics

table.

Datasheet

Rev. 1.00

2018-12-13

LITIX™ Power

TLD5098EP

General product characteristics

4.3

Thermal resistance

Note:

This thermal data was generated in accordance with JEDEC JESD51 standards. For further

information visit https://www.jedec.org

Table 5

Thermal resistance

Parameter

Symbol

Values

Typ.

Unit Note or

Test Condition

Number

Min.

Max.

1)2)

Junction to Case

R_thJC

–

K/W

P_4.3.1

P_4.3.2

P_4.3.3

P_4.3.4

Junction to Ambient R_thJA

K/W ¹⁾³⁾2s2p

K/W ¹⁾³⁾1s0p + 600 mm2

K/W ¹⁾³⁾1s0p + 300 mm2

1) Not subject to production test, specified by design

2) Specified R_thJCvalue is simulated at natural convection on a cold plate setup (all pins and the exposed pad are fixed

to ambient temperature). T_A= 25°C dissipates 1 W

3) Specified R_thJAvalue is according to JEDEC 2s2p (JESD 51-7) + (JESD 51-5) and JEDEC 1s0p (JESD 51-3) + heatsink area

at natural convection on FR4 board;The device was simulated on a 76.2 x 114.3 x 1.5 mm board. The 2s2p board has

2 outer copper layers (2 x 70 µm Cu) and 2 inner copper layers (2 x 35 µm Cu), A thermal via (diameter = 0.3 mm and

25 µm plating) array was applied under the exposed pad and connected the first outer layer (top) to the first inner

layer and second outer layer (bottom) of the JEDEC PCB. T_A=25°C, IC dissipates 1 W

Datasheet

Rev. 1.00

2018-12-13

LITIX™ Power

TLD5098EP

Switching regulator

5.1

Description

The TLD5098EP regulator is suitable for Boost, Buck, Buck-Boost, SEPIC and Flyback configurations. The

constant output current is especially useful for light emitting diode (LED) applications. The switching

regulator function is implemented by a pulse width modulated (PWM) current mode controller.

The PWM current mode controller uses the peak current through the external power switch and error in the

output current to determine the appropriate pulse width duty cycle (on time) for constant output current. The

current mode controller provides a PWM signal to an internal gate driver which then outputs to an external

n-channel enhancement mode metal oxide field effect transistor (MOSFET) power switch.

The current mode controller also has built-in slope compensation to prevent sub-harmonic oscillations which

is a characteristic of current mode controllers operating at high duty cycles (>50% duty).

An additional built-in feature is an integrated soft start that limits the current through the inductor and

external power switch during initialization. The soft start function gradually increases the inductor and switch

current over t_SS(P_5.2.9) to minimize potential overvoltage at the output.

OV FB

H when

OVFB >1.25V

OVFB

Vref =1.25V

UV IVCC

High when

IVCC < 4.0V

COMP

FBH

V_ref=4.0V

NOR

Current

Comp

Gate Driver

Supply

1 IVCC

2 SWO

gmEA

High when

_EA- I_SLOPE- I_CS> 0

Output Stage

OFF when Low

INV

I_EA

OFF

FBL

SET

when H

0 if SET < 1.6V

Low when

_J> 175 °C

Gate

Driver

ꢀ

ꢅ

ꢁꢂꢃ − 0.1ꢄ

Soft start

V_{re f}=0.3V

Current

Sense

I_SLOPE

PWM-FF

Oscillator

Slope Comp

SWCS

SGND

NAND 2

FREQ/

SYNC

I_CS

Error-FF

Clock

Figure 4

Switching regulator block diagram

Datasheet

Rev. 1.00

2018-12-13

LITIX™ Power

TLD5098EP

Switching regulator

5.2

Electrical characteristics

V_IN= 8 V to 34 V; T_J= -40°C to +150°C, all voltages with respect to ground, positive current flowing into pin;

(unless otherwise specified)

Table 6

Electrical characteristics: Switching regulator

Parameter

Symbol

Values

Typ.

Unit Note or

Test Condition

Number

Min.

Max.

Regulator

Feedback reference V_REF

voltage

0.29

0.30

0.06

–

0.31

refer to Figure 30

_REF= V_FBH- V_FBL

V_SET= 5 V

P_5.2.1

I_LED= 350 mA

Feedback reference V_REF

voltage

0.057

–

0.063

refer to Figure 30

V_REF= V_FBH- V_FBL

V_SET= 0.4 V

P_5.2.2

P_5.2.3

I_LED= 70 mA

Feedback reference V_{REF_offset}

voltage offset

refer to Figure 18

and Figure 30

_REF= V_FBH- V_FBL

V_SET= 0.1 V

_OUT> V_IN

%/V refer to Figure 30

_IN= 8 V to 19 V;

V_SET= 5 V;

_LED= 350 mA

%/A refer to Figure 30

_SET= 5 V;

_LED= 100 to 500 mA

V_FB= V_FBL= 5 V

_COMP= 3.5 V

Voltage line

regulation

(∆V_REF/V_REF) –

/ ∆V_IN

–

0.15

P_5.2.4

P_5.2.5

Voltage load

regulation

(∆V_REF/V_REF) –

/ ∆I_BO

Switch peak over-

current threshold

V_SWCS

130

150

170

P_5.2.6

P_5.2.7

P_5.2.8

Maximum duty cycle D_MAX,fixed

Fixed frequency

mode

Maximum duty cycle D_MAX,sync

–

Synchronization

mode

Soft start ramp

t_SS

350

1000

1500

µs

µA

V_FBHrising from 5% P_5.2.9

to 95% of V_FB, typ.

IFBH

I_FBH

V_FBH-V_FBL= 0.3 V

V_SWCS= 150 mV

P_5.2.10

P_5.2.11

P_5.2.12

Feedback high input

current

IFBL

I_FBL

µA

Feedback low input

current

Switch current sense I_SWCS

100

input current

Datasheet

Rev. 1.00

2018-12-13

LITIX™ Power

TLD5098EP

Switching regulator

Table 6

Electrical characteristics: Switching regulator

Parameter

Symbol

Values

Typ.

–

Unit Note or

Test Condition

Number

Min.

Max.

Input undervoltage V_IN,off

shutdown

3.5

4.5

V_INdecreasing

P_5.2.13

P_5.2.14

Input voltage

startup

V_IN,on

–

4.85

V_INincreasing

Gate driver for external switch

Gate driver peak

sourcing current

I_SWO,SRC

I_SWO,SNK

t_R,SWO

–

380

550

–

= 1 V to 4 V

P_5.2.15

P_5.2.16

P_5.2.17

SWO

Gate driver peak

sinking current

–

= 4 V to 1 V

Gate driver output

rise time

GATE

= 3.3 nF;

_SWO= 1 V to 4 V

Gate driver output

fall time

t_F,SWO

–

= 3.3 nF;

P_5.2.18

P_5.2.19

GATE

_SWO= 4 V to 1 V

Gate driver output

voltage

V_SWO

4.5

5.5

= 3.3 nF

GATE

1) Not subject to production test, specified by design

Datasheet

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2018-12-13

LITIX™ Power

TLD5098EP

Oscillator and synchronization

6.1

Description

R_freqvs. switching frequency

The internal oscillator is used to determine the switching frequency of the boost regulator. The switching

frequency can be selected from 100 kHz to 500 kHz with an external resistor to GND. To set the switching

frequency with an external resistor the following formula can be applied.

(6.1)

R _FREQ

−

(

3.5 10

[

]

)[ ]

⎛

⎞

⎟

⎡

⎤

⎡

⎤

−12

(141 10

) ⎜ f _FREQ

⎢

⎣

⎥

⎦

⎢

⎣

⎥

⎦

⎝

⎠

In addition, the oscillator is capable of changing from the frequency set by the external resistor to a

synchronized frequency from an external clock source. If an external clock source is provided on the pin

FREQ/SYNC, then the internal oscillator synchronizes to this external clock frequency and the boost regulator

switches at the synchronized frequency. The synchronization frequency capture range is 250 kHz to 500 kHz.

TLD5098

FREQ /SYNC

Oscillator

PWM

Logic

Gate

driver

SWO

Multiplexer

Clock Frequency

Detector

V_CLK

R_FREQ

Figure 5

Oscillator and synchronization block diagram and simplified application circuit

T_SYNC= 1 / f_SYNC

t_SYNC,PWH

V_SYNC

V_SYNC,H

V_SYNC,L

Figure 6

Synchronization timing diagram

Datasheet

Rev. 1.00

2018-12-13

LITIX™ Power

TLD5098EP

Oscillator and synchronization

6.2

Electrical characteristics

V_IN= 8 V to 34 V, T_J= -40°C to +150°C, all voltages with respect to ground, positive current flowing into pin;

(unless otherwise specified)

Table 7

Electrical characteristics: Oscillator and synchronization

Parameter

Symbol

Values

Typ.

Unit Note or

Test Condition

Number

Min.

Max.

Oscillator

Oscillator frequency

f_FREQ

250

100

300

–

350

500

kHz

R_FREQ= 20 kΩ

V_FREQ= 0 V

P_6.2.1

P_6.2.2

Oscillator frequency

adjustment range

FREQ / SYNC supply

current

I_FREQ

–

-700

1.32

µA

P_6.2.3

Frequency voltage

V_FREQ

1.16

1.24

f_FREQ= 100 kHz P_6.2.4

Synchronization

frequency capture range

f_SYNC

250

3.0

–

500

–

kHz

P_6.2.5

1)2)

Synchronization signal V_SYNC,H

high logic level valid

P_6.2.6

1)2)

Synchronization signal V_SYNC,L

low logic level valid

0.8

–

P_6.2.7

1)2)

Synchronization signal t_SYNC,PWH

200

P_6.2.8

logic high pulse width

1) Synchronization of external PWM ON signal to falling edge

2) Not subject to production test, specified by design

Datasheet

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2018-12-13

LITIX™ Power

TLD5098EP

Oscillator and synchronization

6.3

Typical performance characteristics of oscillator

600

500

400

300

200

100

T_J= 25°C

10 20 30 40 50 60 70 80

R_FREQ[kΩ ]

Figure 7

Switching frequency f_SWversus frequency select resistor to GND R_FREQ

Datasheet

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2018-12-13

LITIX™ Power

TLD5098EP

Enable and dimming function

7.1

Description

The enable function powers the device on or off. A valid logic “low”signal on enable pin EN/PWMI powers “off”

the device and current consumption is less than I_{Q_OFF}(P_7.1.14). A valid logic “high” enable signal on enable

pin EN/PWMI powers on the device. The enable function features an integrated pull down resistor which

ensures that the IC is shut down and the power switch is off in case the enable pin EN is left open.

In addition to the enable function described above, the EN/PWMI pin detects a pulse width modulated (PWM)

input signal that is fed through to the internal gate driver. The EN/PWMI enables and disables the gate driver

for the main switch during PWM operation. PWM dimming an LED is a commonly practiced dimming method

and can prevent color shift in an LED light source.

The enable and PWM input function share the same pin. Therefore a valid logic “low” signal at the EN/PWMI

pin needs to differentiate between an enable power “off” or a PWM dimming “low” signal. The device

differentiates between enable off and PWM dimming signal by requiring the enable off at the EN/PWMI pin to

stay “low” for the “Enable turn off delay time” (t_EN,OFF,DELP_7.1.6).

L_BO

D_BO

C_BO

R_FB

Enable

PWMI

IVCC

LDO

EN / PWMI

SWO

T_SW

R_SWCS

Enable / PWMI

Logic

Gate

Driver

Microcontroller

PWMO

T_DIM

Gate

Driver

Figure 8

Block diagram and simplified application circuit enable and LED dimming

Datasheet

Rev. 1.00

2018-12-13

LITIX™ Power

TLD5098EP

Enable and dimming function

t_EN,START

T_PWMI

t_PWMI,H

t_EN,OFF,DEL

V_EN/PWMI

V_EN/PWMI,ON

V_EN/PWMI,OFF

V_IVCC

V_IVCC,ON

V_IVCC,RTH

V_PWMO

f_FREQ

T_FREQ

V_SWO

Power Off Delay Time

Power On

Power Off

Normal

SWO On

PWMO On

Dim

Normal

SWO On

PWMO On

Dim

Normal

SWO On

PWMO On

< 10 μA

PWMO Off

SWO Off

PWMO Off

SWO Off

Figure 9

Timing diagram enable and LED dimming

7.2

Electrical characteristics

V_IN= 8 V to 34 V, T_J= -40°C to +150°C, all voltages with respect to ground, positive current flowing into pin;

(unless otherwise specified)

Table 8

Electrical characteristics: Enable and dimming

Parameter

Symbol

Values

Typ.

Unit Note or

Test Condition

Number

Min.

V_EN/PWMI,ON3.0

V_EN/PWMI,OFF

Max.

Enable / PWM Input

Enable/PWMI

turn on threshold

–

P_7.1.1

P_7.1.2

Enable/PWMI

–

0.8

–

turn off threshold

Enable/PWMI hysteresis V_EN/PWMI,HYS50

200

–

400

µA

P_7.1.3

P_7.1.4

Enable/PWMI

high input current

I_EN/PWMI,H

I_EN/PWMI,L

t_EN,OFF,DEL

–

V_EN/PWMI= 16.0 V

Enable/PWMI

low input current

0.1

µA

V_EN/PWMI= 0.5 V

P_7.1.5

P_7.1.6

Enable turn off

delay time

–

PWMI min duty time

Enable startup time

t_PWMI,H

–

µs

–

P_7.1.7

P_7.1.8

t_EN,START

100

Datasheet

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2018-12-13

LITIX™ Power

TLD5098EP

Enable and dimming function

Table 8

Electrical characteristics: Enable and dimming

Parameter

Symbol

Values

Typ.

Unit Note or

Test Condition

Number

Min.

Max.

Gate driver for dimming Switch

PWMO gate driver peak I_PWMO,SRC

sourcing current

–

230

370

–

= 1 V to 4 V P_7.1.9

= 4 V to 1 V P_7.1.10

PWMO

PWMO gate driver peak I_PWMO,SNK

sinking current

–

PWMO

PWMO gate driver

output rise time

t_R,PWMO

t_F,PWMO

V_PWMO

–

100

5.5

= 3.3 nF;

P_7.1.11

P_7.1.12

P_7.1.13

GATE

_PWMO= 1 V to 4 V

PWMO gate driver

output fall time

–

= 3.3 nF;

GATE

_PWMO= 4 V to 1 V

PWMO gate driver

output voltage

4.5

= 3.3 nF

GATE

Current consumption

Current consumption, I_{Q_OFF}

shutdown mode

–

µA

V_EN/PWMI= 0.8 V;

T_J≤ 105°C;

P_7.1.14

_IN= 16 V

Current consumption, I_{Q_ON}

≥ 4.75 V; P_7.1.15

EN/PWMI

active mode

_BO= 0 mA;

_SWO= 0% duty

cycle

1) Not subject to production test, specified by design

2) Dependency on switching frequency and gate charge of external switches

Datasheet

Rev. 1.00

2018-12-13

LITIX™ Power

TLD5098EP

Linear regulator

8.1

Description

The internal linear voltage regulator supplies the internal gate drivers with a typical voltage of 5 V and current

up to I_LIM,min(P_8.1.2). An external output capacitor with ESR lower than R_IVCC,ESR(P_8.1.5) is required on pin

IVCC for stability and buffering transient load currents. During normal operation the external MOSFET

switches will draw transient currents from the linear regulator and its output capacitor. Proper sizing of the

output capacitor must be considered to supply sufficient peak current to the gate of the external MOSFET

switches.

Integrated undervoltage protection for the external switching MOSFET

An integrated undervoltage reset threshold circuit monitors the linear regulator output voltage (V_IVCC) and

resets the device in case the output voltage falls below the I_VCCundervoltage reset switch OFF threshold

(V_IVCC,RTH,d). The undervoltage reset threshold for the IVCC pin helps to protect the external switches from

excessive power dissipation by ensuring the gate drive voltage is sufficient to enhance the gate of an external

logic level n-channel MOSFET.

IVCC

Linear regulator

EN / PWMI

Gate

drivers

Figure 10 Voltage regulator block diagram and simplified application circuit

Datasheet

Rev. 1.00

2018-12-13

LITIX™ Power

TLD5098EP

Linear regulator

8.2

Electrical characteristics

V_IN= 8 V to 34 V, T_J= -40°C to +150°C, all voltages with respect to ground, positive current flowing into pin;

(unless otherwise specified)

Table 9

Electrical characteristics: Line regulator

Parameter

Symbol

Values

Typ.

Unit Note or

Test Condition

Number

Min.

Max.

Output voltage

V_IVCC

I_LIM

4.85

5.15

6 V ≤ V_IN≤ 45 V

P_8.1.1

P_8.1.2

P_8.1.3

P_8.1.4

P_8.1.5

P_8.1.6

P_8.1.7

0.1 mA ≤ I_IVCC≤ 40 mA

Output current

limitation

–

V_IN= 13.5 V

_IVCC= 4.5 V

V_IN= 4.5 V

_IVCC= 25 mA

Drop out voltage

V_DR

0.5

100

0.5

–

1)2)

IVCC buffer

capacitor

C_IVCC

R_{IVCC, ESR}

0.47

–

µF

IVCC buffer

capacitor ESR

Undervoltage reset V_IVCC,HDRM

headroom

100

3.6

V_IVCCdecreasing

V_IVCC- V_IVCC,RTH,d

IVCC undervoltage V_IVCC,RTH,d

reset switch-off

4.0

decreasing

IVCC

threshold

IVCC undervoltage V_IVCC,RTH,i

reset switch-on

–

4.5

V_IVCCincreasing

P_8.1.8

threshold

1) Not subject to production test, specified by design

2) Minimum value given is needed for regulator stability; application might need higher capacitance than the minimum.

3) Selection of external switching MOSFET is crucial and the V_{IVCC,RTH,d min}. as worst case the threshold voltage of MOSFET

must be considered.

Datasheet

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2018-12-13

LITIX™ Power

TLD5098EP

Protection and diagnostic functions

9.1

Description

The TLD5098EP has integrated circuits to diagnose and protect against output overvoltage, open load, open

feedback and overtemperature faults. Additionally the FBH and FBL potential is monitored and in case the LED

load short circuits to GND (see description Figure 16) the regulator stops the operation and protects the

system. In case any of the six fault conditions occur the PWMO and IVCC signal will change to an active logic

“low” signal to communicate that a fault has occurred (detailed overview in Figure 11 and Figure 12 below).

Figure 12 illustrates the various open load and open feedback conditions. In case of an overtemperature

condition the integrated thermal shutdown function turns off the gate drivers and internal linear voltage

regulator. The typical junction shutdown temperature is 175°C (T_J,SDP_9.2.2). After cooling down the IC will

automatically restart. Thermal shutdown is an integrated protection function designed to prevent IC

destruction and is not intended for continuous use in normal operation (Figure 14). To calculate the proper

overvoltage protection resistor values an example is given in Figure 15.

Input

Output

Protection and

diagnostic circuit

Output

overvoltage

Open load

Open feedback

Short to GND

SWO and PWMO

gate driver off

Overtemperature

Input undervoltage

Linear regulator off

Figure 11 Protection and diagnostic function block diagram

Datasheet

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2018-12-13

LITIX™ Power

TLD5098EP

Protection and diagnostic functions

Table 10 Diagnosis truth table¹⁾

Input

Output

SWO

Condition

Level

PWMO

High or Sw

Low

IVCC

Overvoltage at output False

True

Active

Shutdown

Active

Shutdown

Low

Open load

False

True

False

True

False

True

False

True

High or Sw

Low

Open feedback

High or Sw

Low

Short to GND at LED

chain

High or Sw

Low

Overtemperature

High or Sw

Low

Undervoltage at input False

True

High or Sw

Low

1) Sw = Switching; False = Condition does NOT exist; True = Condition does exist

V_BO

Output open circuit conditions

Open circuit 3

Open circuit 1

Open circuit

condition

Fault threshold voltage

V_REF

Fault condition

TLD5098

Open FBH

Open FBL

-20 to -100 mV

0.5 to 1.0 V

R_OVH

R_FB

Overvoltage

comparator

OVFB

Open circuit 2

D₁

Open VBO

Open PWMO

-20 to -100 mV

R_OVL

Detected by overvoltage

V_OVFB,TH

D₂

D₃

D₄

D₅

D₆

D₇

D₈

D₉

D₁₀

V_REF

Feedback voltage

error amplifier

FBH

FBL

V_REF

Max Threshold = 1.0 V

Min Threshold = 0.5 V

Typical V_REF= 0.3 V

Open circuit 4

T_DIM

Max Threshold = -20 mV

Min Threshold = -100 mV

PWMO

Figure 12 Open load and open feedback conditions

Datasheet

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2018-12-13

LITIX™ Power

TLD5098EP

Protection and diagnostic functions

Startup

Normal

Thermal

Overvoltage

Open load /

feedback

Shutdown

shutdown

V_IVCC

V_IVCC,RTH,i

V_IVCC,RTH,d

T_j,SD,HYST

T_J

TJ,SD

V_OVFB,HYS

V_BO

_OVFB≥ V_OVFB,TH

V_IN

V_FBH-V_FBL

V_REF,2

t_SS

0.3 V Typ

V_REF,1

V_PWMO

Figure 13 Open load, overvoltage and overtemperature timing diagram

Datasheet

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2018-12-13

LITIX™ Power

TLD5098EP

Protection and diagnostic functions

V_EN/PWMI

T_J

T_JSD

ΔT

T_JSO

T_A

V_SWO

I_LED

I_peak

V_PWMO

Device

OFF

Overtemp

fault

Overtemp

fault

Overtemp

fault

Overtemp

fault

Normaloperation

Figure 14 Device overtemperature protection behavior

V_OVFB

example: V_OUT,max= 40V

1.25mA

V_OVP,max

Overvoltage protection

active

40V

1.25mA

R_OVH

33.2kΩ

TLD5098

V_OVFB,TH

OVFB

1.25V

R_OVL

1kΩ

1.25V

Overvoltage protection

disabled

GND

Figure 15 Overvoltage protection description

Datasheet

Rev. 1.00

2018-12-13

LITIX™ Power

TLD5098EP

Protection and diagnostic functions

Short to GND protection for high-side return applications (B2B) from Figure 26

The FBH and FBL pins features a short to GND detection threshold (V_FBL, F_{BH_S2G}). If the potential on these pins

is below this threshold the device stops its operation. This means that the PWMO signal changes to inactive

state (low potential) and the corresponding p-channel (T_DIM2) is switched off accordingly and protects the LED

chain. For the B2B application some external components are needed to ensure a low potential during a short

circuit event. D1 and D2 are low power diodes (eg. BAS16-03W) and the resistor R_lim( eg. 10 kΩ) is needed to

limit the current through this path. The diode D3 should be a high power diode and is needed to protect the

R_FBand the FBH and FBL pins in case of an short circuit to GND event. This short circuit detection and

protection concept considers potential faults for LED chains (LED modules) which are separated from the ECU

via two wires (at the beginning and at the end of the LED chain). If the short circuit condition disappears, the

device will re-start with a soft start.

C_BO

V_FBL,FBH

R_lim

60 V

wire

harness

wire

harness

LED module

V_bat

R_FB

T_DIM2

D_n

D₁

Short to GND

L_BO

C_IN

Normal operation

Short to GND

I_LED

D_BO

I_SW

V_OUT

T_DIM1

T_SW

PWMO

3 V

SWO

Device working with parameter

deviations

SWCS

V_{FBL,FBH_S2G}

FBH

FBL

Short circuit detected on

FBH/FBL

SGND

TLD5098

Figure 16 Short circuit to GND protection

Datasheet

Rev. 1.00

2018-12-13

LITIX™ Power

TLD5098EP

Protection and diagnostic functions

9.2

Electrical characteristics

V_IN= 8 V to 34 V, T_J= -40°C to +150°C, all voltages with respect to ground, positive current flowing into pin;

(unless otherwise specified)

Table 11 Electrical characteristics: Protection and diagnosis

Parameter

Symbol

Values

Typ.

Unit Note or

Test Condition

Number

Min.

Max.

Short circuit protection

FBH and FBL short-

circuit fault sensing

common mode range

V_{FBL,FBH_S2G}1.5

–

refer to Figure 16 P_9.2.1

_FBH= V_FBL

decreasing

Temperature protection

Overtemperature

shutdown

T_J,SD

160

–

175

190

–

°C

¹⁾refer to Figure 14 P_9.2.2

Overtemperature

T_J,SD,HYST

P_9.2.3

shutdown hystereses

Overvoltage protection

Output overvoltage

feedback threshold

increasing

V_OVFB,TH

1.21

1.25

1.29

refer to Figure 15 P_9.2.4

Output overvoltage

feedback hysteresis

V_OVFB,HYS

t_OVPRR

–

150

µs

¹⁾Output Voltage

decreasing

P_9.2.5

P_9.2.6

P_9.2.7

Overvoltage reaction

time

–

Output Voltage

increasing

Overvoltage feedback I_OVFB

-1

0.1

µA

V_OVFB= 1.25 V

input current

Open load and open feedback diagnostics

Open load/feedback

threshold

V_REF,1,3

-100

–

-20

refer to Figure 12 P_9.2.8

V_REF= V_FBH-V_FBL

Open circuit 1 or 3

Open feedback

threshold

V_REF,2

0.5

V_REF= V_FBH-V_FBL

P_9.2.9

Open circuit 2

1) Specified by design; not subject to production test

Note:

Integrated protection functions are designed to prevent IC destruction under fault conditions

described in the data sheet. Fault conditions are considered as “outside” normal operating range.

Protection functions are not designed for continuous repetitive operation.

Datasheet

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2018-12-13

LITIX™ Power

TLD5098EP

Analog dimming

This pin influences the “feedback voltage error amplifier” by generating an internal current accordingly to an

external reference voltage (V_SET). If the analog dimming feature is not needed this pin must be connected to

IVCC or external > 1.6 V supply. Different application scenarios are described in Figure 19. This pin can also go

outside of the ECU for instance if a thermistor is connected on a separated LED module and the “Analog

dimming input” is used to thermally protect the LEDs. For reverse battery protection of this pin an external

series resistor should be placed to limit the current.

10.1

Purpose of analog dimming

1. It is difficult for LED manufacturers to deliver LEDs which have the same brightness, colorpoint and

forward voltage class. Due to this relatively wide spread of the crucial LED parameters automotive

customers order LEDs from one or maximum two different colorpoint classes. The LED manufacturer must

preselect the LEDs to deliver the requested colorpoint class. These preselected LEDs are matched in terms

of the colorpoint but a variation of the brightness remains. To correct the brightness deviation an analog

dimming feature is needed. The mean LED current can be adjusted by applying an external voltage V_SETat

the SET pin.

2. If the DC/DC application is separated from the LED loads the ECU manufacturers aim is to develop one

hardware which should be able to handle different load current conditions (e.g. 80 mA to 400 mA) to cover

different applications. To achieve this average LED current adjustment the analog dimming is a crucial

feature.

10.2

Description

Application example

Desired LED current = 400 mA. For the calculation of the correct feedback resistor R_FBthe following equation

can be used: This formula is valid if the analog dimming feature is disabled and V_SET> 1.6 V.

(10.1)

V_REF

R_FB

V_REF

I_LED

0.3V

I_LED

→ R_FB=

= 750mΩ

400mA

Related electrical parameter is guaranteed with V_SET= 5 V (P_5.2.1) A decrease of the average LED current can

be achieved by controlling the voltage at the SET pin (V_SET) between 0.1 V and 1.6 V. The mathematical relation

is given in the formula below:

(10.2)

V_SET− 0.1V

I_LED

5 R_FB

Refer to the concept drawing in Figure 18.

If V_SETis equal to or smaller than 50 mV, the switching activity is stopped and I_LED= 0 A

Datasheet

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2018-12-13

LITIX™ Power

TLD5098EP

Analog dimming

V_FBH-FBL[mV]

Typ. 300

V_SET[V]

Analog dimming enabled

− 0.1ꢄ

Analog enabled

ꢄ

ꢁꢂꢃ

ꢄ_ꢉꢂꢊ

ꢆ_ꢇꢂꢈ

ꢆ_ꢇꢂꢈ=

ꢉ_ꢊꢋ

5 ∙ ꢉ_ꢊꢋ

Figure 17 Basic relationship between V_REFand V_SETvoltage

V_REF

V_OUT

R_FB

FBL

I_FBL

R₂

FBH

I_LED

V_INT

I_FBH

R₁

_BANDGAP= 1.6V

V_{REF_OFFSET}

SET

V_SET

Feedback voltage

error amplifier

I_SET

n*I_SET

R₃

100mV

COMP

GND

C_COMP

R_COMP

Figure 18 Concept drawing analog dimming

Datasheet

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2018-12-13

LITIX™ Power

TLD5098EP

Analog dimming

Multi-purpose usage of the analog dimming feature

1. A µC integrated digital analog converter (DAC) output or a stand alone DAC can be used to supply the SET

pin of the TLD5098EP. The integrated voltage regulator (V_IVCC) can be used to supply the µC or external

components if the current consumption does not exceed 20 mA.

2. The analog dimming feature is directly connected to the input voltage of the system. In this configuration

the LED current is reduced if the input voltage V_INis decreasing. The DC/DC boost converter is changing

(increasing) the switching duty cycle if V_INdrops to a lower potential. This causes an increase of the input

current consumption. If applications require a decrease of the LED current in respect to V_INvariations this

setup can be chosen.

3. The usage of an external resistor divider connected between I_VCC(integrated 5 V regulator output and gate

buffer pin) SET and GND can be chosen for systems without µC on board. The concept allows to control the

LED current via placing cheap low power resistors. Furthermore a temperature sensitive resistor

(Thermistor) to protect the LED loads from thermal destruction can be connected additionally.

4. If the analog dimming feature is not needed the SET pin must be connected directly to > 1.6 V potential

(e.g. IVCC potential)

5. Instead of a DAC the µC can provide a PWM signal and an external R-C filter produces a constant voltage for

the analog dimming. The voltage level depends on the PWM frequency (f_PWM) and duty cycle (DC) which can

be controlled by the µc software after reading the coding resistor placed at the LED module.

Datasheet

Rev. 1.00

2018-12-13

LITIX™ Power

TLD5098EP

Analog dimming

+5V

V_bb

C_IVCC

IVCC

R_SET2

D/A-Output

SET

μC

V_SET

V_SETR_SET1

C_filter

GND

V_IVCC= +5V

IVCC

SET

IVCC

SET

R_filter

R_SET2

C_IVCC

R_SET1

GND

V_SET

V_SET~ V_IVCC

C_filter

+5V

IVCC

SET

C_IVCC

PWM

PWM output

R_filter

μC

(e.g. XC866)

C_filter

V_SET

GND

Figure 19 Analog dimming in various applications

Datasheet

Rev. 1.00

2018-12-13

LITIX™ Power

TLD5098EP

Analog dimming

10.3

Electrical characteristics

V_IN= 8 V to 34 V, T_J= -40°C to +150°C, all voltages with respect to ground, positive current flowing into pin;

(unless otherwise specified)

Table 12 Electrical characteristics: Protection and diagnosis

Parameter

Symbol

Values

Typ.

–

Unit Note or

Test Condition

Number

Min.

Max.

SET programming

range

V_SET

1.6

¹⁾refer to

Figure 17

P_10.3.1

1) Specified by design; not subject to production test.

Datasheet

Rev. 1.00

2018-12-13

LITIX™ Power

TLD5098EP

Application information

Note:

The following information is given as a hint for the implementation of the device only and shall not

be regarded as a description or warranty of a certain functionality, condition or quality of the device.

L_BO

D_BO

T_DIM2

V_IN

_IN= 4.5V to 45V

C_IN

C_BO

D_Z

R_DIM2

I_LED

T_SW

SWO

SWCS

R_FB

V_REF

R_CS

R_DIM1

_CCor V_IVCC

R_OVH

SGND

OVFB

PWM

V_SET

Short

D₁

Analog Dimming

IC₂

Microcontroller

(e.g. XC866)

SET

R_filter

GND

C_filter

R_OVL

D₂

D₃

D₄

D₅

D₆

D₇

D₈

D₉

D₁₀

IC₁

TLD5098

PWMI

FBH

IVCC

Digital Dimming

EN / PWMI

Spread

Spectrum

C_IVCC

R_POL

D_POL

FREQ / SYNC

COMP

STATUS

C_COMP

FBL

PWMO

T_DIM1

R_FREQ

R_COMP

GND

LED load seperated

via wire harness

Figure 20 Boost to Ground application circuit - B2G (Boost configuration)

Reference

Designator

Part

Number

Value

Manufacturer

Type

Quantity

D_{1 - 10}

D_BO

White

Schottky, 3 A, 100 V_R

5V or 10V

80V Diode

100 uF, 50V

10 nF

Osram

Vishay

LUW H9GP

SS3H10

LED

Diode

D_Z

Vishay

ZENER

Diode

D_POL

C_IN,C_BO

C_COMP

C_IVCC

IC₁

Infineon

Panasonic

EPCOS

Infineon

Coilcraft

BAS1603W

EEEFK1H101GP

X7R

Diode

Capacitor

MLCC CCNPZC105KBW X7R

TLD5098

1uF , 6.3V

IC₂

XC866

L_BO

100 uH

MSS1278T-104ML

Inductor

R_DIM1+2,R_COMP,

R_POL

10 kΩ, 1%

Panasonic

ERJ3EKF1002V

Resistor

R_FB

R_FREQ

R_OVH

R_OVL

R_CS

820 mΩ, 1%

20 kΩ, 1%

Panasonic

Infineon

ERJ14BQFR82U

ERJ3EKF2002V

ERJ3EKF3322V

ERJ3EKF1001V

ERJB1CFR05U

IPG20N10S4L-22

Resistor

33.2 kΩ, 1%

1 kΩ, 1%

50 mΩ, 1%

100V N-ch, 35A

T_SW

Transistor

60V Dual N-ch (3.1A) and

P-ch. enh. (2A)

T_DIM1,T_DIM2

Infineon

BSO615CG

alternativ: 100V N-ch (0.37A),

alternativ: 60V P-ch (1.9A)

Infineon

BSP123

Transistor

BSP171P

Figure 21 Bill of Materials for B2G application circuit

Datasheet

Rev. 1.00

2018-12-13

LITIX™ Power

TLD5098EP

Application information

L₁

D_BO

C_SEPIC

V_IN

_IN= 4.5V to 45V

C_IN

I_SW

R_FB

L₂

V_REF

C_BO

T_SW

SWO

SWCS

I_LED

D₁

R_CS

_CCor V_IVCC

R_OVH

D₂

D₃

D₄

D₅

D₆

D₇

SGND

OVFB

PWM

V_SET

Analog Dimming

IC₂

Microcontroller

(e.g. XC866)

SET

R_filter

R_OVL

C_filter

IC₁

TLD5098

PWMI

Digital Dimming

EN / PWMI

FBH

FBL

Spread

Spectrum

FREQ / SYNC

COMP

STATUS

D_n

C_COMP

D_POL

R_POL

IVCC

C_IVCC

PWMO

R_FREQ

R_COMP

T_DIM

PWMO

GND

Figure 22 SEPIC application circuit (Buck - Boost configuration)

Reference

Designator

Part

Number

Value

White

Manufacturer

Osram

Type

LED

Quantity

variable

D_{1 - n}

LUW H9GP

D_BO

Schottky, 3 A, 100 V_R

80V Diode

Vishay

SS3H10

Diode

D_POL

Infineon

BAS1603W

C_SEPIC

C_IN,C_BO

C_COMP

C_IVCC

IC₁

3.3 uF, 20V

100 uF, 50V

10 nF

EPCOS

Panasonic

EPCOS

Infineon

Coilcraft

X7R, Low ESR

Capacitor

EEEFK1H101GP

X7R

1uF , 6.3V

X7R

TLD5098

IC₂

XC866

L₁, L₂

47 uH

MSS1278T-473ML

Inductor

alternativ: 22uH coupled

inductor

Coilcraft

MSD1278-223MLD

Inductor

R_COMP,R_POL

R_FB

10 kΩ, 1%

820 mΩ, 1%

Panasonic

Infineon

ERJ3EKF1002V

ERJ14BQFR82U

ERJ3EKF2002V

ERJ3EKF3322V

ERJ3EKF1001V

ERJB1CFR05U

IPG20N06S4L-26

IPD35N10S3L-26

BSP318S

Resistor

Transistor

R_FREQ

R_OVH

20 kΩ, 1%

33.2 kΩ, 1%

R_OVL

1 kΩ, 1%

R_CS

50 mΩ, 1%

Dual N-ch enh. (60V, 20A)

alternativ: 100V N-ch, 35A

alternativ: 60V N-ch, 2.6A

T_DIM,T_SW

Infineon

Figure 23 Bill of Materials for SEPIC application circuit

Datasheet

Rev. 1.00

2018-12-13

LITIX™ Power

TLD5098EP

Application information

D_BO

V_IN

_IN= 4.5V to 45V

L₁

C_IN

I_SW

R_FB

L₂

V_REF

C_BO

T_SW

SWO

SWCS

I_LED

R_CS

_CCor V_IVCC

R_OVH

D₁

SGND

OVFB

PWM

V_SET

D₂

D₃

D₄

D₅

D₆

D₇

Analog Dimming

SET

R_filter

R_OVL

C_filter

IC₁

TLD5098

IC₂

Microcontroller

(e.g. XC866)

PWMI

Digital Dimming

EN / PWMI

FBH

FBL

Output

STATUS

FREQ / SYNC

COMP

C_COMP

D_POL

R_POL

D_n

IVCC

C_IVCC

R_FREQ

R_COMP

T_DIM

PWMO

GND

PWMO

Figure 24 Flyback application circuit (Buck - Boost configuration)

Reference

Designator

Part

Number

Value

Manufacturer

Type

Quantity

D_{1 - n}

D_BO

White

Schottky, 3 A, 100 V_R

3.3 uF, 50V (100V)

100 uF, 50V

47 nF

Osram

Vishay

LUW H9GP

SS3H10

LED

Diode

variable

C_BO

EPCOS

Panasonic

EPCOS

Infineon

X7R, Low ESR

EEEFK1H101GP

X7R

Capacitor

C_IN

C_COMP

C_IVCC

IC₁

1 uF , 6.3V

X7R

TLD5098

IC₂

Infineon

XC866

L₁, L₂

R_COMP,R_POL

D_POL

1 µH / 9 uH

10 kΩ, 1%

80 V Diode

EPCOS

Panasonic

Infineon

Transformer EHP 16

ERJ3EKF1002V

BAS1603W

Inductor

Resistor

Diode

Isabellenhütte

R_FB

820 mΩ, 1%

10 kΩ, 1%

SMS – Power Resistor

ERJ3EKF1002V

ERJ3EKF5622V

ERJ3EKF1241V

SMS - Power Resistor

IPG20N06S4L-26

IPG20N10S4L-22

BSP318S

Resistor

Transistor

R_FREQ

R_OVH

Panasonic

Isabellenhütte

Infineon

56.2 kΩ, 1%

1.24 kΩ, 1%

5 mΩ, 1%

R_OVL

R_CS

Dual N-ch enh. (60V, 20A)

alternativ: 100V N-ch, 35A

T_DIM,T_SW

Infineon

alternativ: 60V N-ch, 2.6A

Infineon

Figure 25 Bill of Materials for Flyback application circuit

Datasheet

Rev. 1.00

2018-12-13

LITIX™ Power

TLD5098EP

Application information

C_BO

DSC1:

Low Power Diode

Rlim:10kΩr

ange

DSC2:

Low Power Diode

R_FB

T_DIM2

V_IN= 4.5V to 45V

C_IN

D_Z

Power

D_n

D₁

R_DIM2

Schottky

Diode

Number of LEDs could be variable

independent from VIN:

à BUCK-BOOST configuration

R_DIM1

Short to GND

I_LED

L_BO

D_BO

T_DIM1

I_SW

PWMO

V_OUT

T_SW

PWMO

SWO

SWCS

FBH

R_CS

V_CCor V_IVCC

FBL

SGND

OVFB

R_OVH

PWM

V_SET

Analog Dimming

SET

R_filter

C_filter

IC₂

R_OVL

IC₁

Microcontroller

(e.g. XC866)

STATUS

TLD5098

PWMI

Digital Dimming

Spread Spectrum

EN / PWMI

FREQ / SYNC

COMP

IVCC

C_COMP

C_IVCC

GND

R_FREQ

R_COMP

Figure 26 Boost to Battery application circuit - B2B (Buck - Boost configuration)

Reference

Designator

Part

Number

Value

Manufacturer

Type

Quantity

D_{1 - n}

D_{BO ,}D₃

D_{SC1 ,}D_SC2

D_Z

White

Osram

Vishay

Infineon

LUW H9GP

SS3H10

BAS16-03W

Diode

variable

Schottky, 3 A, 100 V_R

Low Power Diode

Zener Diode

C_BO

C_IN

100 uF, 80V

100 uF, 50V

Panasonic

EEVFK1K101Q

Capacitor

EEEFK1H101GP

C_COMP

10 nF

1 uF, 6.3V

EPCOS

Infineon

Coilcraft

Panasonic

X7R

Capacitor

C_IVCC

MLCC CCNPZC105KBW X7R

TLD5098

IC₁

IC₂

L_BO

XC866

100 uH

10 kΩ, 1%

MSS1278T-104ML_

ERJ3EKF1002V

Inductor

Resistor

R_COMP,R_DIM1,R_DIM2,R_lim

R_FB

R_FREQ

R_OVH

820 mΩ, 1%

20 kΩ, 1%

Panasonic

Infineon

ERJ14BQFR82U

ERJ3EKF2002V

ERJP06F5102V

ERJ3EKF1001V

ERJB1CFR05U

BSO615CG

Resistor

Transistor

33.2 kΩ, 1%

R_OVL

1 kΩ, 1%

R_CS

50 mΩ, 1%

T_DIM1,T_DIM2

60V Dual N-ch (3.1A) and P-ch. enh. (2A)

alternativ: 100V N-ch (0.37A),

alternativ: 60V P-ch (1.9A)

Infineon

BSP123

Infineon

BSP171P

Applicationdrawing _plus _BOM_B2B_T

N-ch, OptiMOS-T2 100V, 35A

alternativ: 60V N-ch, 30A

T_SW

Infineon

IPD35N10S3L-26

IPD30N06S4L-23

BSP318S

Transistor

LD5098 _March2012.vsd

Infineon

Transistor

alternativ: 60V N-ch, 2.6A

Infineon

Figure 27 Bill of Materials for B2B application circuit

Datasheet

Rev. 1.00

2018-12-13

LITIX™ Power

TLD5098EP

Application information

D_BO

D₁

D₂

C_BO

V_REF

L_BO

I_LED

T_DIM2

_IN= 4.5V to 45V

C_IN

D_Z

R_FB

R_DIM2

BUCK Setup:

VIN > VOUT

R_DIM1

PWMO

T_DIM1

PWMO

FBH

V_CCor V_IVCC

PWM

V_SET

Analog Dimming

IC₂

Microcontroller

(e.g. XC866)

SET

R_filter

FBL

C_filter

IC₁

TLD5098

IVCC

C_IVCC

R_POL

PWMI

T_SW

SWO

SWCS

Digital Dimming

Spread Spectrum

EN / PWMI

FREQ / SYNC

COMP

R_CS

STATUS

SGND

OVFB

C_COMP

R_FREQ

R_COMP

GND

PWMO

Figure 28 Buck application circuit

Reference

Value

Part

Number

Manufacturer

Type

Quantity

Designator

D_{1 -2}

D_BO

D_Z

White

Schottky, 3 A, 100 V_R

10V

Osram

Vishay

LE UW Q9WP

SS3H10

LED

Diode

Vishay

Zener Diode

BAS1603W

X7R

D_POL

C_BO

C_IN

80V Diode

4.7 uF, 50V

100 uF, 50V

47 nF

Infineon

EPCOS

Panasonic

EPCOS

Infineon

Coilcraft

Capacitor

EEEFK1H101GP

X7R

C_COMP

C_IVCC

IC₁

MLCC CCNPZC105KBW X7R

TLD5098

1 uF , 6.3V

IC₂

XC866

L₁

22 µH

MSS1278T

Inductor

R_DIM1+2,R_COMP,

R_POL

10 kΩ, 1%

Panasonic

ERJ3EKF1002V

Resistor

Isabellenhütte

R_FB

820 mΩ, 1%

20 kΩ, 1%

SMS – Power Resistor

ERJ3EKF2002V

Resistor

R_FREQ

Panasonic

Isabellenhütte

Infineon

R_CS

50 mΩ, 1%

SMS - Power Resistor

BSS138

Resistor

60V, 0.28A

T_DIM1

Transistor

-60V, -1.9A

100V N-ch, 35A

T_DIM2

T_SW

Infineon

BSP171

Transistor

IPG20N10S4L-22

IPD30N06S4L-23

alternativ: 60V N-ch, 30A

Figure 29 Bill of Materials for Buck application circuit

Datasheet

Rev. 1.00

2018-12-13

LITIX™ Power

TLD5098EP

Application information

I_BO

I_Load

D_RV

L₁

V_IN

L_BO

D_BO

V_BO

V_BATT

C_BO

C_IN

I_SW

constant

V_OUT

C₁

C₂

R_L

T_SW

SWO

SWCS

IVCC

R_CS

V_CCor V_IVCC

C_IVCC

R_OVH

SGND

OVFB

R_ST

Output

SET

R_OVL

IC₁

TLD5098

IC₂

Microcontroller

(e.g. XC866)

R_FB1

Output

EN / PWMI

FREQ / SYNC

COMP

FBH

Output

R_FB2

V_REF

C_COMP

FBL

R_FB3

PWMO

R_FREQ

R_COMP

GND

Figure 30 Boost voltage application circuit

Reference

Designator

Part

Number

Value

Manufacturer

Type

Quantity

D_{1 - 10}

White

Osram

Vishay

LW W5AP

Diode

D_BO

Schottky, 3 A, 100 V_R

SS3H10

C_BO

C_IN

100 uF, 80V

100 uF, 50V

Panasonic

EEVFK1K101Q

Capacitor

EEEFK1H101GP

X7R

C_COMP

C_IVCC

IC₁

10 nF, 16V

1 uF, 6.3V

EPCOS

Panasonic

Infineon

Capacitor

X7R

TLD5098

IC₂

Infineon

XC866

L_BO

100 uH

Coilcraft

MSS1278T-104ML_

ERJ3EKF1002V

ERJ3EKF5102V

ERJ3EKF1001V

ERJ3EKF2002V

ERJ3EKF3322V

ERJ3EKF1001V

ERJB1CFR05U

IPD35N10S3L-26

Inductor

Resistor

Transistor

R_COMP

R_FB1,R_FB3

R_FB2

10 kohms, 1%

51 kohms, 1%

1 kohms, 1%

20 kohms, 1%

33.2 kohms, 1%

1 kohms, 1%

50 mohms, 1%

N-ch, OptiMOS-T2 100V

Panasonic

Infineon

R_FREQ, R_ST

R_OVH

R_OVL

R_CS

T_SW

Figure 31 Bill of Materials for Boost voltage application circuit

Note:

The application drawings and corresponding bill of materials are simplified examples. Optimization

of the external components must be done accordingly to specific application requirements.

Datasheet

Rev. 1.00

2018-12-13

LITIX™ Power

TLD5098EP

Application information

11.1

Further application information

•

For further information you may contact http://www.infineon.com/

Application Note: TLD509x DC-DC Multitopology Controller IC “Dimensioning and Stability Guideline -

Theory and Practice”

Datasheet

Rev. 1.00

2018-12-13

LITIX™ Power

TLD5098EP

Package outlines

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Figure 32 Outline PG-TSDSO-14

Green product (RoHS compliant)

To meet the world-wide customer requirements for environmentally friendly products and to be compliant

with government regulations the device is available as a green product. Green products are RoHS-Compliant

(i.e Pb-free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020).

Further information on packages

https://www.infineon.com/packages

Datasheet

Rev. 1.00

2018-12-13

LITIX™ Power

TLD5098EP

Revision history

Revision Date

Changes

1.00

2018-12-13

Initial datasheet

Datasheet

Rev. 1.00

2018-12-13

Trademarks

All referenced product or service names and trademarks are the property of their respective owners.

IMPORTANT NOTICE

The information given in this document shall in no For further information on technology, delivery terms

Edition 2018-12-13

Published by

Infineon Technologies AG

81726 Munich, Germany

event be regarded as a guarantee of conditions or and conditions and prices, please contact the nearest

characteristics ("Beschaffenheitsgarantie").

Infineon Technologies Office (www.infineon.com).

With respect to any examples, hints or any typical

values stated herein and/or any information regarding

the application of the product, Infineon Technologies

hereby disclaims any and all warranties and liabilities

of any kind, including without limitation warranties of

non-infringement of intellectual property rights of any

third party.

In addition, any information given in this document is

subject to customer's compliance with its obligations

stated in this document and any applicable legal

requirements, norms and standards concerning

customer's products and any use of the product of

Infineon Technologies in customer's applications.

The data contained in this document is exclusively

intended for technically trained staff. It is the

responsibility of customer's technical departments to

evaluate the suitability of the product for the intended

application and the completeness of the product

information given in this document with respect to

such application.

WARNINGS

Due to technical requirements products may contain

dangerous substances. For information on the types

in question please contact your nearest Infineon

Technologies office.

Do you have a question about any

aspect of this document?

Email: erratum@infineon.com

Except as otherwise explicitly approved by Infineon

Technologies in a written document signed by

authorized representatives of Infineon Technologies,

Infineon Technologies’ products may not be used in

any applications where a failure of the product or any

consequences of the use thereof can reasonably be

expected to result in personal injury.

Document reference

LITIX™ Power TLD5098EP Rev.1.00

TLD5098EP [INFINEON]

相关型号：

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TLD5541-1QV

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