TPS51396AEVM Evaluation Module
1 Trademarks
All trademarks are the property of their respective owners.
2 Introduction
TPS51396A DC/DC converter is a synchronous buck converter designed to provide up to a 8-A output. The input (VIN) is rated for 4.5 V to 24 V. The TPS51396A uses a proprietary DCAP3 Control mode. Rated input voltage and output current range for the evaluation module are given in Table 2-1. The high-side and low-side MOSFETs are incorporated inside the TPS51396A package along with the gate-drive circuitry. An external divider allows for an adjustable output voltage. Additionally, the TPS51396A provides 1.3ms internal soft start or external soft start, under voltage lockout inputs and power good output.
| EVM | INPUT VOLTAGE RANGE | OUTPUT CURRENT RANGE |
|---|---|---|
| TPS51396AEVM | 4.5 V to 24 V | 0 A to 8 A |
3 Performance Specification Summary
A summary of the TPS51396AEVM performance specifications is provided in Table 3-1. Specifications are given for an input voltage of VIN = 12 V and an output voltage of 1.0 V, unless otherwise specified. The TPS51396AEVM is designed and tested for VIN = 4.5 V to 24 V. The ambient temperature is 25°C for all measurements, unless otherwise noted.
| SPECIFICATION | TEST CONDITIONS | MIN | TYP | MAX | UNIT |
|---|---|---|---|---|---|
| Input voltage | 4.5 | 12 | 24 | V | |
| Output voltage setpoint | 1.0 | V | |||
| FB voltage | TJ = 25°C | 594 | 600 | 606 | mV |
| Output current range | 0 | 8 | A | ||
| Soft start time | External soft start time | 2.6 | ms | ||
| Operating frequency | 600k | Hz | |||
| Mode | Light load operating mode | ECO | |||
| Over current | Valley current set point | 9.8 | A |
TPS51396A supports six different kinds of mode by selecting divider resister on mode pin. Please refer Table 3-2.
In this TPS51396AEVM board, mode can be selected to 600kHz/ECO and 600kHz/OOA by Mode Jumper. If you want to select other mode, please replace mode divider resister according to below table.
| R_Top(kΩ) | R_Bottom (kΩ) | LIGHT LOAD OPERATION | FREQUENCY (kHz) |
|---|---|---|---|
| 330 | 5.1 | Eco | 600 |
| 330 | 15 | Eco | 800 |
| 330 | 27 | Eco | 1000 |
| 200 | 27 | OOA | 600 |
| 150 | 33 | OOA | 800 |
| 160 | 51 | OOA | 1000 |
4 Schematic and List of Materials
This section presents the TPS51396AEVM schematic and List of Materials.
Figure 4-1 Schematic| DES | QTY | DESCRIPTION | PART NUMBER | MAN |
|---|---|---|---|---|
| C2 | 1 | Capacitor, ceramic, 1 µF, 25 V, ±10%, X5R, 0603 | C1608X5R1E105K080AC | TDK |
| C3, C4, C5 | 3 | Capacitor, ceramic, 22 µF, 35 V, ±20%, X5R, 1206 | C3216X5R1V226M160AC | TDK |
| C1, C6, C7, C15 | 4 | Capacitor, ceramic, 0.1 µF, 50 V, ±10%, X7R, 0603 | C1608X7R1H104K080AA | TDK |
| C14 | 1 | Capacitor, ceramic, 0.018 µF, 16 V, ±10%, X7R, 0603 | GRM188R71C183KA01D | MuRata |
| C8, C9, C10, C11, C12 | 5 | Capacitor, ceramic, 22 µF, 10 V, +±20%, X7S, 1206 | C3216X7S1A226M160AC | TDK |
| C13 | 1 | Capacitor, ceramic, 47 pF, 50 V, +±5%, C0G/NP0, 0603 | 06035A470JAT2A | AVX |
| D1 | 1 | Diode, Zener, 3.6 V, 500 mW, SOD-123 | MMSZ4685T1G | ON Semiconductor |
| J1, J2 | 2 | Terminal block, 5.08 mm, 2x1, brass, TH | ED120/2DS | On-Shore Technology |
| J3 | 1 | Header, 100 mil, 2x1, tin, TH | PEC02SAAN | Sullins Connector Solutions |
| J4 | 1 | Header, 100 mil, 3x1, tin, TH | PEC03SAAN | Sullins Connector Solutions |
| J5 | 1 | Header, 100 mil, 3x2, tin, TH | PEC03DAAN | Sullins Connector Solutions |
| L1 | 1 | Inductor, shielded drum core, Superflux, 680 nH, 17 A, 0.0035 Ω, SMD | 744311068 | Wurth Elektronik |
| R7 | 1 | Resistor, 120 kΩ, 5%, 0.1 W, AEC-Q200 grade 0, 0603 | CRCW0603120KJNEA | Vishay-Dale |
| R10 | 1 | Resistor, 51 kΩ, 5%, 0.1 W, AEC-Q200 grade 0, 0603 | CRCW060351K0JNEA | Vishay-Dale |
| R11 | 1 | Resistor, 5.11 kΩ, 1%, 0.1 W, AEC-Q200 grade 0, 0603 | CRCW06035K11FKEA | Vishay-Dale |
| R8 | 1 | Resistor, 332 kΩ, 1%, 0.1 W, AEC-Q200 grade 0, 0603 | CRCW0603332KFKEA | Vishay-Dale |
| R5 | 1 | Resistor, 100 kΩ, 1%, 0.1 W, AEC-Q200 grade 0, 0603 | CRCW0603100KFKEA | Vishay-Dale |
| R1, R3 | 2 | Resistor, 0 Ω, 5%, 0.1 W, AEC-Q200 grade 0, 0603 | CRCW06030000Z0EA | Vishay-Dale |
| R2 | 1 | Resistor, 51.1 Ω, 1%, 0.1 W, AEC-Q200 grade 0, 0603 | CRCW060351R1FKEA | Vishay-Dale |
| R6 | 1 | Resistor, 30.1 kΩ, 1%, 0.1 W, AEC-Q200 grade 0, 0603 | CRCW060330K1FKEA | Vishay-Dale |
| R4 | 1 | Resistor, 20.0 kΩ, 1%, 0.1 W, AEC-Q200 grade 0, 0603 | CRCW060320K0FKEA | Vishay-Dale |
| R12 | 1 | Resistor, 27.4 kΩ, 1%, 0.1 W, AEC-Q200 grade 0, 0603 | CRCW060327K4FKEA | Vishay-Dale |
| R9 | 1 | Resistor, 200 kΩ, 1%, 0.1 W, AEC-Q200 grade 0, 0603 | CRCW0603200KFKEA | Vishay-Dale |
| SH-J1, SH-J2, SH-J3 | 3 | Shunt, 100 mil, gold plated, black | SNT-100-BK-G | Samtec |
| TP1, TP4, TP5, TP6, TP7, TP12, TP13 | 7 | Test point, miniature, red, TH | 5000 | Keystone |
| TP8, TP10, TP15, TP16 | 4 | Test point, miniature, black, TH | 5000 | Keystone |
| TP2, TP3, TP9, TP11, TP14 | 5 | Terminal, turret, TH, Triple | 1598-2 | Keystone |
| U1 | 1 | 4.5-V to 24-V input, 8-A synchronous step-down voltage regulator, RJE0020A (VQFN-HR-20) | TPS51396ARJER | Texas Instruments |
