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Z8F63739996
OPTIREG
linear voltage regulator TLF4x77-3Lx
™
demoboard
Preface
Scope and purpose
This document describes the usage of the OPTIREG
linear voltage regulator TLF4x77-3Lx demoboard for the
™
TLF4477-3LA from Infineon Technologies AG. Please also refer to the corresponding datasheets.
Intended audience
This document is intended for engineers who develop applications.
User manual
Please read the sections "Important notice" and "Warnings" at the end of this document
Rev. 1.02
www.infineon.com/OPTIREG-linear
2024-12-30
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Table of Contents
Related Manuals for Infineon Technologies OPTIREG TLF4 77-3L Series
Summary of Contents for Infineon Technologies OPTIREG TLF4 77-3L Series
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Page 1: Preface
This document describes the usage of the OPTIREG linear voltage regulator TLF4x77-3Lx demoboard for the ™ TLF4477-3LA from Infineon Technologies AG. Please also refer to the corresponding datasheets. Intended audience This document is intended for engineers who develop applications. User manual Please read the sections "Important notice"... -
Page 2: Table Of Contents
OPTIREG linear voltage regulator TLF4x77-3Lx demoboard ™ Table of contents Table of contents Preface ................1 Table of contents . -
Page 3: Introduction
OPTIREG linear voltage regulator TLF4x77-3Lx demoboard ™ 1 Introduction Introduction General description The TLF4477-3LA is a monolithic integrated low drop out voltage regulator for loads up to 300 mA at each output. It provides an adjustable output voltage range from 3 V to 20 V for an input voltage up to 40 V. Each output provides individual current limitation, current monitoring and diagnostics. -
Page 4: Block Diagram
OPTIREG linear voltage regulator TLF4x77-3Lx demoboard ™ 1 Introduction Block diagram Q1, Q2 Bandgap Reference Internal Supply ADJ1, ADJ2 EN1, Current Protection Monitor CSO1, ST1, CSO2, CSOxSel CSOx Figure 1 Block diagram TLF4477-3LA User manual Rev. 1.02 2024-12-30... -
Page 5: Demoboard
OPTIREG linear voltage regulator TLF4x77-3Lx demoboard ™ 2 Demoboard Demoboard Figure 2 shows the OPTIREG linear voltage regulator TLF4x77-3Lx demoboard. ™ Figure 2 OPTIREG linear voltage regulator TLF4x77-3Lx demoboard ™ User manual Rev. 1.02 2024-12-30... -
Page 6: Assembly
OPTIREG linear voltage regulator TLF4x77-3Lx demoboard ™ 2 Demoboard Assembly Figure 3 Assembly of TLF4x77-3Lx demoboard for TLF4477-3LA User manual Rev. 1.02 2024-12-30... -
Page 7: Operating Conditions
OPTIREG linear voltage regulator TLF4x77-3Lx demoboard ™ 2 Demoboard Operating conditions To avoid electrical damage of the demoboard, the values in Table 1 must be maintained. Table 1 Limit values for operation Parameter Symbol Values Unit Note or condition Min. Typ. -
Page 8: Configuration
OPTIREG linear voltage regulator TLF4x77-3Lx demoboard ™ 2 Demoboard Configuration The demoboard can be easily configured via jumpers on the board. The board provides the following configuration options: • connect the enable signals EN1 and EN2 to VIN or to GND with a jumper •... -
Page 9: Quickstart
OPTIREG linear voltage regulator TLF4x77-3Lx demoboard ™ 2 Demoboard 2.3.1 Quickstart In order to get started with the demoboard right away, despite the numerous configuration options, a default configuration is presented. Placing the jumpers as shown in Figure 4 powers the device and applies an output voltage on each channel. -
Page 10: Enable
OPTIREG linear voltage regulator TLF4x77-3Lx demoboard ™ 2 Demoboard 2.3.2 Enable There are two jumpers on the board which can be used to enable the device. Each channel can be enabled or disabled separately. Placing the jumper between ENx and VIN connects the enable signal to VIN and enables the channel. -
Page 11: Csoxsel Selection
OPTIREG linear voltage regulator TLF4x77-3Lx demoboard ™ 2 Demoboard 2.3.3 CSOxSel selection The CSOxSel-pin can be used to program the behavior of CSOx. Depending on the votlage applied at the CSOxSel-pin, CSOx can either be connected to CSO1, CSO2 internally or put into a high impedance state. A jumper on the board allows to connect the CSOxSel-pin either directly to Q2, to GND or to Q2 with the means of a resistor divider. -
Page 12: St1 And St2 Selection
OPTIREG linear voltage regulator TLF4x77-3Lx demoboard ™ 2 Demoboard Figure 7 CSO1 SET and CSO2 SET jumper setting 2.3.5 ST1 and ST2 selection The status outputs ST1 and ST2 can be configured with additional jumpers. There are three possible configurations indicated on the PCB. ST1 and ST2 are open drain outputs. They can either be pulled up to their corresponding output channels Q1 and Q2 or set to indicate an active "low"... -
Page 13: Signal Adaption
OPTIREG linear voltage regulator TLF4x77-3Lx demoboard ™ 2 Demoboard If the jumper is configured to light an LED when ST1 or ST2 are "low", then the schematic from Figure 9 applies. If the output voltages Q1 and Q2 are changed, then the series resistors R21 and R22 must be adapted. Make sure R21 and R22 limit the current through LEDs D1 and D2 to 20 mA maximum. -
Page 14: Schematic And Layout
OPTIREG linear voltage regulator TLF4x77-3Lx demoboard ™ 3 Schematic and layout Schematic and layout Schematic Parts that are not placed are grayed out and crossed out. Figure 11 Schematic TLF4477-3LA assembly User manual Rev. 1.02 2024-12-30... -
Page 15: Layout
OPTIREG linear voltage regulator TLF4x77-3Lx demoboard ™ 3 Schematic and layout Layout The PCB uses a four layer standard stack-up. The product can also be soldered to double layer boards. However, four layers offer better thermal characteristics. The configuration on this demoboard is comparable to the "2s2p"... - Page 16 OPTIREG linear voltage regulator TLF4x77-3Lx demoboard ™ 3 Schematic and layout Figure 13 Internal layer 1 TLF4x77-3Lx demoboard User manual Rev. 1.02 2024-12-30...
- Page 17 OPTIREG linear voltage regulator TLF4x77-3Lx demoboard ™ 3 Schematic and layout Figure 14 Internal layer 2 TLF4x77-3Lx demoboard User manual Rev. 1.02 2024-12-30...
- Page 18 OPTIREG linear voltage regulator TLF4x77-3Lx demoboard ™ 3 Schematic and layout Figure 15 Bottom layer TLF4x77-3Lx demoboard User manual Rev. 1.02 2024-12-30...
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Page 19: Bill Of Materials
OPTIREG linear voltage regulator TLF4x77-3Lx demoboard ™ 4 Bill of materials Bill of materials The bill of materials shows the components for both product specific assembly variants of the demoboard. For the mounting condition of each component see Schematic. Mechanical parts, such as connectors or test-points are not mentioned. -
Page 20: Restrictions
OPTIREG linear voltage regulator TLF4x77-3Lx demoboard ™ 5 Restrictions Restrictions This demoboard offers limited features only for evaluation and testing of Infineon products. The demoboard is not an end product or finished appliance, nor is it intended or authorized by Infineon to be integrated into end products. -
Page 21: Revision History
OPTIREG linear voltage regulator TLF4x77-3Lx demoboard ™ 6 Revision history Revision history Revision Date Changes 1.02 2024-12-30 Editorial changes 1.01 2022-12-01 Editorial changes 2020-02-20 Document created User manual Rev. 1.02 2024-12-30... -
Page 22: Disclaimer
Infineon Technologies, All Rights Reserved. of any kind, including without limitation warranties of Infineon Technologies’ products may not be used in non-infringement of intellectual property rights of any any applications where a failure of the product or third party.
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