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UM_2307_PL12_2307_173200
EVAL_TDA38813_1VOUT user guide
User guide for TDA38813 evaluation board
About this document
Scope and purpose
The TDA38813 is a synchronous buck regulator, providing a compact, high-performance and flexible solution in
a small 3 mm x 4 mm QFN package.
Key features offered by the TDA38813 include internal soft-start, precision 0.9 V reference voltage, Power Good,
thermal protection, programmable switching frequency in the range of 600 kHz to 1 MHz, enable input, input
undervoltage lockout (UVLO) for proper start-up, latched-off or unlatched overvoltage protection (OVP),
overcurrent protection (OCP), and pre-bias start-up.
This user guide contains the schematic and bill of materials for the EVAL_TDA38813_1VOUT engineering
evaluation board. It describes operation and use of the evaluation board itself. Detailed application
information for TDA38813 is available in the TDA38813 data sheet.
Intended audience
This document is intended as a guide for design engineers evaluating TDA38813 performance with the
engineering EVAL_TDA38813_1VOUT demo board.
User Guide
Please read the sections "Important notice" and "Warnings" at the end of this document
V 1.0
www.infineon.com/eval-tda38813-1vout
2023-07-21
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Table of Contents
Related Manuals for Infineon EVAL TDA38813 1VOUT
Summary of Contents for Infineon EVAL TDA38813 1VOUT
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Page 1: About This Document
Intended audience This document is intended as a guide for design engineers evaluating TDA38813 performance with the engineering EVAL_TDA38813_1VOUT demo board. User Guide Please read the sections “Important notice” and “Warnings” at the end of this document V 1.0 www.infineon.com/eval-tda38813-1vout 2023-07-21... -
Page 2: Important Notice
Boards provided by Infineon Technologies. The design of the Evaluation Boards and Reference Boards has been tested by Infineon Technologies only as described in this document. The design is not qualified in terms of safety requirements, manufacturing and operation over the entire operating temperature range or lifetime. -
Page 3: Safety Precautions
Error! Unknown document property name. EVAL_TDA38813_1VOUT user guide User guide for TDA38813 evaluation board Safety precautions Safety precautions Note: Please note the following warnings regarding the hazards associated with development systems Table 1 Safety precautions Caution: The heat sink and device surfaces of the evaluation or reference board may become hot during testing. -
Page 4: Table Of Contents
Typical efficiency and power loss curves ..................... 16 Typical operating waveforms ....................... 17 TDA38813 Thermal images with no air flow and 25°C ambient............22 Revision history..........................23 User Guide Please read the sections “Important notice” and “Warnings” at the end of this document V 1.0 www.infineon.com/eval-tda38813-1vout 2023-07-21... -
Page 5: Tda38813 Features
• Potential applications Server applications • Storage applications • Telecom and datacom applications • Distributed point-of-load (PoL) power architectures • User Guide Please read the sections “Important notice” and “Warnings” at the end of this document V 1.0 www.infineon.com/eval-tda38813-1vout 2023-07-21... -
Page 6: Board Information
EVAL_TDA38813_1VOUT user guide User guide for TDA38813 evaluation board Board information Board information Evaluation board Figure 1 Evaluation board Board features = +12 V, V = +1 V at 0 to12 A = 600 kHz/800 kHz/1000 kHz L = 240 nH = 10x 22 µF (25 V, ceramic 0805) + 2 x 1 µF (25 V, ceramic 0805) + 1 x 330 µF (25 V, electrolytic, optional) = 10x 47 µF (6.3 V, ceramic 0805) + 1 x 2.2 µF (6.3 V, ceramic 0805) User Guide... -
Page 7: Connections And Operating Instructions
EVAL_TDA38813_1VOUT user guide User guide for TDA38813 evaluation board Board information Connections and operating instructions The TDA38813 demo board requires a single +12 V for the input power and can deliver up to 12 A load current. The operation modes and OCP limits can be selected through jumpers. Table 2 Connections Label... -
Page 8: Pcb Layout
EVAL_TDA38813_1VOUT user guide User guide for TDA38813 evaluation board Board information PCB layout Figure 2 Top layer Figure 3 Bottom layer User Guide V 1.0 2023-07-21... - Page 9 EVAL_TDA38813_1VOUT user guide User guide for TDA38813 evaluation board Board information Figure 4 Inner layer 1 Figure 5 Inner layer 2 User Guide V 1.0 2023-07-21...
- Page 10 EVAL_TDA38813_1VOUT user guide User guide for TDA38813 evaluation board Board information Figure 6 Inner layer 3 Figure 7 Inner layer 4 User Guide V 1.0 2023-07-21...
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Page 11: Schematic
EVAL_TDA38813_1VOUT user guide User guide for TDA38813 evaluation board Board information Schematic Figure 8 Schematic of the TDA38812 evaluation board V = 12 V, V = 1 V, I = 12 A OUTmax User Guide V 1.0 2023-07-21... -
Page 12: Bill Of Materials
EVAL_TDA38813_1VOUT user guide User guide for TDA38813 evaluation board Board information Bill of materials Table 3 Bill of materials Item no. Qty Value Part Description Manufacturer Part number reference 220 pF Ceramic capacitor TDK Corporation C1005X7R1H221K050BA 220 pF 50 V X7R 0402 10% 2.2 µF Ceramic capacitor... - Page 13 EVAL_TDA38813_1VOUT user guide User guide for TDA38813 evaluation board Board information SMAT TVS Diode 70 VWM Diodes SMAT70A-13-F 100VC SMA Incorporated 70 A – J1, J3, J9, Vertical header Harwin Inc. M20-9990246 J10, J12, connector 2- J14, J16 position 2.54 MM –...
- Page 14 EVAL_TDA38813_1VOUT user guide User guide for TDA38813 evaluation board Board information 60.4 kΩ Thick film resistor Yageo RC0402FR-0760K4L 60.4 kΩ 1/10 W 1% 0402 30.1 kΩ Thick film resistor Vishay CRCW040230K1FKED 30.1 kΩ 1.0 % 1/16 W SMD 0402 121 kΩ Thick film resistor Yageo RC0402FR-07121KL...
- Page 15 Inboar” pin .042" Vector Electronics K30C/M TP3, TP4, hole 1000/PKG TP5, TP6, TP7, TP8, TP9, TP10, TP11, TP12, TP13, TP18, TP19, TP20, TP21, TP22, TP23, TP24, TP25 TDA38813 TDA38813 12 A Infineon TDA38813 single-voltage synchronous buck regulator User Guide V 1.0 2023-07-21...
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Page 16: Evaluation Board Test Results
EVAL_TDA38813_1VOUT user guide User guide for TDA38813 evaluation board Evaluation board test results Evaluation board test results Typical efficiency and power loss curves = 12 V, V = internal LDO, I = 0 A – 12 A, F = 800 kHz, room temperature, natural convection. Note that the efficiency and power loss curves include losses of the TDA38813, inductor losses, losses of the input and output capacitors, and PCB trace losses. -
Page 17: Typical Operating Waveforms
EVAL_TDA38813_1VOUT user guide User guide for TDA38813 evaluation board Evaluation board test results Figure 10 Output voltage regulation Typical operating waveforms = 12.0 V, V = 1 V, I = 12 A, F = 800 kHz, room temperature, no airflow Figure 11 Start-up at 12 A load, (Ch1: V , Ch2: V... - Page 18 EVAL_TDA38813_1VOUT user guide User guide for TDA38813 evaluation board Evaluation board test results Figure 12 Pre-bias start-up at 0 A load, (Ch1: V , Ch2: V , Ch3: P ,Ch4: enable) GOOD Figure 13 ripple at 12 A load, F = 800 kHz, (Ch2: V User Guide V 1.0...
- Page 19 EVAL_TDA38813_1VOUT user guide User guide for TDA38813 evaluation board Evaluation board test results Figure 14 SW node, 12 A load, F = 800 kHz Figure 15 SW node (in DEM), 1 A load User Guide V 1.0 2023-07-21...
- Page 20 EVAL_TDA38813_1VOUT user guide User guide for TDA38813 evaluation board Evaluation board test results Figure 16 Short circuit and UVP (shutdown), (Ch2: V , Ch3:P GOOD Figure 17 Transient response at 4 A step load current at 10 A/µs slew rate: I = 4 A –...
- Page 21 EVAL_TDA38813_1VOUT user guide User guide for TDA38813 evaluation board Evaluation board test results Switching frequency vs. load current 1100 1050 1000 Load current (A) Fsw_12Vin_600kHz Fsw_12Vin_800kHz Fsw_12Vin_1000kHz Figure 18 Switching frequency vs. load current Switching frequency vs. input voltage =10 A 1200 1000 1Vout, 600KHz...
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Page 22: Tda38813 Thermal Images With No Air Flow And 25°C Ambient
EVAL_TDA38813_1VOUT user guide User guide for TDA38813 evaluation board Evaluation board test results TDA38813 Thermal images with no air flow and 25°C ambient Output voltage = 1 V Output voltage = 3.3 V Output voltage = 5 V Figure 20 Thermal performance of TDA38813 for 1 V, 3.3 V, and 5 V output voltages, 12 A load, FCCM mode, 800 kHz switching frequency, 12 V V User Guide... -
Page 23: Revision History
EVAL_TDA38813_1VOUT user guide User guide for TDA38813 evaluation board Evaluation board test results Revision history Document Date of release Description of changes version V 1.0 2023-07-21 Initial release User Guide V 1.0 2023-07-21... - Page 24 Due to technical requirements products may contain Published by dangerous substances. For information on the types Infineon Technologies AG in question please contact your nearest Infineon Technologies office. 81726 Munich, Germany Except as otherwise explicitly approved by Infineon Technologies in a written document signed by ©...
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