Infineon TLD5190IVREG-EVAL User manual

User Manual Please read the Important Notice and Warnings at the end of this document Rev.1.00
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TLD5190IVREG-EVAL evaluation board
User Manual
About this document
Product description
TLD5190: H-Bridge DC-DC controller designed for automotive applications
Constant current (LED) and constant voltage regulation
High power, high efficiency buck-boost architecture
EMC optimized device: Spread spectrum
Scope and purpose
Scope of this user manual is to provide tothe audience instructions on usage of the TLD5190QV device evaluation
board TLD5190IVREG-EVAL schematic version S01 PCB version P01.
The TLD5190IVREG-EVAL is an evaluation platform for the TLD5190QV, which can work as buck-boost LED driver,
or as a voltage regulator.
Figure 1 TLD5190IVREG-EVAL device evaluation board
Intended audience
Hardware engineers, software engineers, system architects

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Table of contents
1Table of contents
About this document......................................................................................................................... 1
1Table of contents...................................................................................................................... 2
2Description .............................................................................................................................. 3
3Quick start procedure............................................................................................................... 4
3.1 Setup as LED driver .................................................................................................................................4
3.2 Set up as voltage regulator.....................................................................................................................5
4Operating range and power derating ......................................................................................... 7
5Electrical characteristics........................................................................................................... 8
6PCB layout............................................................................................................................... 9
7Schematic...............................................................................................................................10
Revision history...............................................................................................................................11

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Description
2Description
The H-Bridge architecture is among the most efficient buck-boost topologies for high current applications. The
TLD5190 provides digital and analog dimming control and 2 flags for diagnostic.
The TLD5190IVREG-EVAL is an evaluation platform for the TLD5190QV as LED driver or voltage regulator.
The default configuration is constant current LED driver with 1.5 A maximum output current. The output current
can be increased up to 6 A by changing RSHO. If higher currents are needed, the output filter has to be bypassed.
Figure 2 TLD5190QV as LED driver
By reconfiguring a few solder jumps, the board becomes a powerful voltage regulator.
Figure 3 TLD5190QV as voltage regulator
On the board, in addition to the TLD5190QV device the following are present:
Trimmer to adjust output voltage when set as voltage regulator
Trimmer to adjust output current
Two LEDs showing TLD5190QV faults status (EF1, EF2)

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Quick start procedure
3Quick start procedure
Below, step-by-step procedures are laid out for setup and running the TLD5190IVREG-EVAL in all available
configurations.
3.1 Setup as LED driver
1. Configure solder jumper for LED driver configuration: Figure 4
2. J_EN (Enable) and J_PWMI jumpers
Figure 4 Connect loads and set jumpers
3. Connect the LED load
4. Connect a 12 V power supply to the VIN connector →the blue LED should turn on indicating IVCC present
5. Adjust IOUT with RSET (>150 mA suggested for better accuracy and transient response)
Figure 5 Connect power supply and adjust LED current

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Quick start procedure
3.2 Set up as voltage regulator
1. Configure solder jumper for VREG (Figure 6), if IOUT > 3 A bypass RSHO with a solder joint on the resistor top
2. Connect J_EN and PWMI jumpers
Figure 6 Voltage regulator: set EN jumpers, populate solder jumps
3. Connect a 12 V power supply to the VIN connector
4. Rotate RSET trimmer fully clockwise (100% analog dimming, improves transient response and accuracy)
Figure 7 Voltage regulator: connect power supply
5. Rotate RVOLT trimmer to obtain the desired VOUT

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Quick start procedure
Figure 8 Adjust VOUT using RVOLT
6. Connect the load
NOTE:
It is possible to adjust output voltage from 0 to full scale (previously set by RVOLT) by rotating RSET, but the
best transient response is obtained when analog dimming is set to 100%.

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Operating range and power derating
4Operating range and power derating
The TLD5190IVREG-EVAL has very high efficiency, so it can deliver up to 60 W at the output without a heat sink
at TA= 25°C, VIN = 12 V (see Figure 10 for power-derating curve).
Please note that the module does not implement thermal protection, so ensure proper cooling when output
power exceeds the power-derating curve. The heat sink has to be positioned below the switching MOSFETs as
shown in Figure 9.
Figure 9 Heat sink placement (optional for Pout exceeding power derating curve)
The heat sink shall be electrically insulated from the PCB, by means of a thermal pad.
Pout[W]
6935 VIN[V]
60
30
12
45
Figure 10 Output power derating curve (TA= 25°C, JIIN closed)
NOTE:
In order to reach 60 W output power, the input current limiter RIIN shunt has to be bypassed by closing JIIN,
otherwise the input current would be limited to 5 A by the input current limiter features.

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Electrical characteristics
5Electrical characteristics
Table 1 TLD5190IVREG-EVAL version S01 P01 –electrical characteristics
Parameter
Symbol
Value
Unit
Note/Test Condition
Min.
Typ.
Max.
Input voltage
VIN
5.5
-
35
V
Power derating may occur for VIN < 12 V
Out voltage
VOUT
5.5
5.5
–
41,8
22.5
V
LED driver mode
Voltage mode
Output current
IOUT
150
0
–
–
1500
6
mA
A
LED driver mode (up to 6 A by changing RSHO)
Voltage mode
Output power
POUT
–
–
60
50
W
W
VIN 12 V to 35 V, TA= 25°C
JIIN closed
JIIN open (input current limiter ON)
see Figure 10 for power derating curve
Switching
frequency
Switching
frequency
–
385
–
kHz
Spread spectrum deviation is present
PWM frequency
PWMfreq
100
–
500
Hz
System efficiency
Eff
–
95
–
%
Measured in voltage mode
VIN = 12 V, VOUT = 15 V, IOUT = 3 A

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PCB layout
6PCB layout
Figure 11 PCB layout top view

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Schematic
7Schematic
Figure 12 Schematic

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Revision history
Revision history
Document
version
Date of release
Description of changes
Rev. 1.00
2020-07-22
Initial User Manual

Trademarks
All referenced product or service names and trademarks are the property of their respective owners.
Edition 2020-07-22
UM TLD5542-1IVREG_eval
Published by
Infineon Technologies AG
81726 Munich, Germany
© 2020 Infineon Technologies AG.
All Rights Reserved.
Do you have a question about this
document?
Email: [email protected]
Document reference
IMPORTANT NOTICE
The information contained in this application note is
given as a hint for the implementation of the product
only and shall in no event be regarded as a
description or warranty of a certain functionality,
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respect to such application.
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(www.infineon.com).
WARNINGS
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dangerous substances. For information on the types
in question please contact your nearest Infineon
Technologies office.
Except as otherwise explicitly approved by Infineon
Technologies in a written document signed by
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Technologies, Infineon Technologies’ products may
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