EVAL_TDA38825_5VOUT Evaluation Board User Guide
User guide for the Infineon EVAL_TDA38825_5VOUT evaluation board, featuring a synchronous buck regulator delivering 5V at up to 20A from a 12V input.
Overview
This design document provides comprehensive details for the EVAL_TDA38825_5VOUT evaluation board, which utilizes the Infineon TDA38825 synchronous buck regulator. The board is optimized for a 12V input voltage and produces a 5V output supporting load currents up to 20A. The document contains a full bill of materials, circuit schematics, and 6-layer PCB layout information. It details technical specifications of the TDA38825, including programmable switching frequencies (600 kHz, 800 kHz, and 1 MHz), a 0.6V precision reference, and integrated protection features such as over-current, over-voltage, and thermal shutdown. Additionally, the guide includes performance test results, efficiency curves, and typical operating waveforms.
Use Cases
- Server Power Systems
- Data Storage Solutions
- Telecom and Datacom Equipment
- Distributed Point of Load Architectures
Topics
Referenced Parts
SMAT70A-13
Diodes Incorporated
TVS DIODE 70VWM 100VC SMA
M20-9960345
Harwin Inc.
CONN HEADER R/A 3POS 2.54MM
M20-9990246
Harwin Inc.
CONN HEADER VERT 2POS 2.54MM
25SEPF330M
Panasonic Electronic Components
CAP ALUM POLY 330UF 20% 25V T/H
HSEC8-110-01-S-DV-A-K-TR
Samtec Inc.
CONN EDGE DUAL FMALE 20POS 0.031
C1005X5R1C225K050BC
TDK Corporation
CAP CER 2.2uF 16V X5R 0402 10%
C1005X7R1H221K050BA
TDK Corporation
CAP CER 220pF 50V X7R 0402 10%
CM21X5R107M06AT
TDK Corporation
CAP CER 100uF 6.3V X5R 0805 20%
RE0402FRE0720RL
Yageo
RES Thick Film 20.0 Ohm 1/16W 1% SMD 0402
CM21X5R107M06AT
TDK
6.3V X5R 0805 20% TDK CM21X5R107M06AT
RE0402FRE0720RL
Yageo
SMD 0402 Yageo RE0402FRE0720RL
2.54MM
Harwin
VERT 2POS 2.54MM Harwin Inc. M20-9990246
2.54MM
Harwin
3POS 2.54MM Harwin Inc. M20-9960345
| PH2-12-U-A | Adam Tech | CONN HEADER VERT 12POS 2.54MM |
| TDA38825 | Infineon | TDA38825 20A Single-voltage Synchronous Buck Regulator |
| C0402C102K5RAC7867 | Kemet | CAP CER 1000pF 50V X7R 0402 10% |
| 7693 | Keystone Electronics | TERM SCREW 6-32 4 PIN PCB |
| GRM155R61E225KE11D | Murata | CAP CER 2.2uF 25V X5R 0402 10% |
| GRM155R71C104KA88D | Murata | CAP CER 0.1uF 16V X7R 0402 10% |
| GRM21BR61E226ME44L | Murata | CAP CER 22uF 25V X5R 0805 20% |
| ERJ-2GEJ393X | Panasonic | RES Thick Film 39 kOhm 5.0 % 1/16 W SMD 0402 |
| ERJ-2RKF1212X | Panasonic | RES Thick Film 12.1K Ohm 1/10W 1% 0402 |
| ERJ-2RKF5491X | Panasonic | RES Thick Film 5.49K Ohm 1/10W 1% 0402 |
| 1909763-1 | TE Connectivity | CONN UMCC JACK STR 50OHM SMD |
| K30C/M | Vector Electronics | PIN INBOARD .042" HOLE 1000/PKG |
| CRCW040230K1FKED | Vishay | RES Thick Film 30.1 kOhm 1.0 % 1/16 W SMD 0402 |
| AC0402FR-0710KL | Yageo | RES SMD 10K OHM 1% 1/16W 0402 |
| CC0402KRX7R7BB683 | Yageo | CAP CER .068uF 16V X7R 0402 10% |
| RC0402FR-07121KL | Yageo | RES Thick Film 121K Ohm 1/10W 1% 0402 |
| RC0402FR-071K37L | Yageo | RES Thick Film 1.37K Ohm 1/16W 1% 0402 |
| RC0402FR-07243KL | Yageo | RES Thick Film 243K Ohm 1/16W 1% 0402 |
| RC0402FR-0742K2L | Yageo | RES Thick Film 42.2K Ohm 1/16W 1% 0402 |
| RC0402FR-0760K4L | Yageo | RES Thick Film 60.4K Ohm 1/10W 1% 0402 |
| RC0402FR-07953RL | Yageo | RES Thick Film 953 Ohm 1/10W 1% 0402 |
| CMLE063T-R47MS | Cyntec | FIXED IND 470NH 23A 2.9MOHM SMD |
| TDA38825 | Infineon | Regulator Infineon TDA38825 |
| C0402C102K5RAC7867 | Kemet | 50V X7R 0402 10% Kemet C0402C102K5RAC7867 |
| GRM155R61E225KE11D | Murata | X5R 0402 10% Murata GRM155R61E225KE11D |
| GRM155R71C104KA88D | Murata | X7R 0402 10% Murata GRM155R71C104KA88D |
| GRM21BR61E226ME44L | Murata | X5R 0805 20% Murata GRM21BR61E226ME44L |
| ERJ-2GEJ393X | Panasonic | SMD 0402 Panasonic ERJ-2GEJ393X |
| ERJ-2RKF1212X | Panasonic | 1% 0402 Panasonic ERJ-2RKF1212X |
| ERJ-2RKF5491X | Panasonic | 1% 0402 Panasonic ERJ-2RKF5491X |
| C1005X5R1C225K050BC | TDK | X5R 0402 10% TDK C1005X5R1C225K050BC |
| CRCW040230K1FKED | Vishay | SMD 0402 Vishay CRCW040230K1FKED |
| AC0402FR-0710KL | Yageo | 1% 1/16W 0402 YAGEO AC0402FR-0710KL |
| CC0402KRX7R7BB683 | Yageo | 16V X7R 0402 10% Yageo CC0402KRX7R7BB683 |
| RC0402FR-07121KL | Yageo | 1% 0402 Yageo RC0402FR-07121KL |
| RC0402FR-071K37L | Yageo | Yageo RC0402FR-071K37L |
| RC0402FR-07243KL | Yageo | 1% 0402 Yageo RC0402FR-07243KL |
| RC0402FR-0742K2L | Yageo | 1% 0402 Yageo RC0402FR-0742K2L |
| RC0402FR-0760K4L | Yageo | 1% 0402 Yageo RC0402FR-0760K4L |
| RC0402FR-07953RL | Yageo | 0402 Yageo RC0402FR-07953RL |
| 131-3701-261 | Cinch Connectivity Solutions Johnson | CONN SMB JACK STR 50 OHM PCB |
| RL1632T4F-R005-FNH | Delta Electronics | RES Thick Film 0.005 Ohm 1W 1% SMD 1632 |
| SMAT70A-13 | Diodes Incorporated | TVS DIODE 70VWM 100VC SMA |
| M20-9960345 | Harwin Inc. | CONN HEADER R/A 3POS 2.54MM |
| M20-9990246 | Harwin Inc. | CONN HEADER VERT 2POS 2.54MM |
| 25SEPF330M | Panasonic Electronic Components | CAP ALUM POLY 330UF 20% 25V T/H |
| HSEC8-110-01-S-DV-A-K-TR | Samtec Inc. | CONN EDGE DUAL FMALE 20POS 0.031 |
| C1005X5R1C225K050BC | TDK Corporation | CAP CER 2.2uF 16V X5R 0402 10% |
| C1005X7R1H221K050BA | TDK Corporation | CAP CER 220pF 50V X7R 0402 10% |
| CM21X5R107M06AT | TDK Corporation | CAP CER 100uF 6.3V X5R 0805 20% |
| RE0402FRE0720RL | Yageo | RES Thick Film 20.0 Ohm 1/16W 1% SMD 0402 |
| CM21X5R107M06AT | TDK | 6.3V X5R 0805 20% TDK CM21X5R107M06AT |
| RE0402FRE0720RL | Yageo | SMD 0402 Yageo RE0402FRE0720RL |
| 2.54MM | Harwin | VERT 2POS 2.54MM Harwin Inc. M20-9990246 |
| 2.54MM | Harwin | 3POS 2.54MM Harwin Inc. M20-9960345 |