ZHCSJU9E January 2007 – June 2019 TPS40077
PRODUCTION DATA.
Table 3 lists the design specifications and Table 4 lists the bill of materials for this buck regulator application example.
| PARAMETER | NOTES AND CONDITIONS | MIN | NOM | MAX | UNITS | |
|---|---|---|---|---|---|---|
| INPUT CHARACTERSTICS | ||||||
| VIN | Input voltage | 8 | 12 | 16 | V | |
| IIN | Input current | VIN = NOM, IOUT = MAX | 1.8 | 2 | A | |
| No-load input current | VIN = NOM, IOUT = 0 A | 62.6 | 3.6 | mA | ||
| VIN_UVLO | Input UVLO | IOUT = MIN to MAX | 5.4 | 6 | 6.6 | V |
| VIN_ONV | Input ONV | IOUT = MIN to MAX | 6.3 | 7 | 7.7 | V |
| OUTPUT CHARACTERSTICS | ||||||
| VOUT | Output voltage | VIN = NOM, IOUT = NOM | 1.75 | 1.8 | 1.85 | V |
| Line regulation(1) | VIN = MIN to MAX, IOUT = NOM | 0.5% | ||||
| Load regulation(1) | VIN = NOM, IOUT = MIN to MAX | 0.5% | ||||
| VOUT_ripple | Output voltage ripple | VIN = NOM, IOUT = MAX | 100 | mVpp | ||
| IOUT | Output current | VIN = MIN to MAX | 0 | 5 | 10 | A |
| IOCP | Output overcurrent inception point | VIN = NOM, VOUT = VOUT – 5% | 12.25 | 19.4 | 34 | A |
| VOVP | Output OVP | IOUT = MIN to MAX | NA | NA | NA | |
| Transient response | ||||||
| ΔI | Load step | IOUT_Max to 0.2 × IOUT _Max | 8 | A | ||
| Load slew rate | 10 | A/μs | ||||
| Overshoot | 200 | mV | ||||
| Settling time | 1 | ms | ||||
| SYSTEM CHARACTERSTICS | ||||||
| fSW | Switching frequency | 240 | 300 | 360 | kHz | |
| ηpk | Peak efficiency | VIN = NOM, IOUT = MIN to MAX | 90% | |||
| η | Full-load efficiency | VIN = NOM, IOUT = MAX | 90% | |||
| Top | Operating temperature range | VIN = MIN to MAX, IOUT = MIN to MAX | –40 | 25 | 85 | °C |
| MECHANICAL CHARACTERSTICS | ||||||
| L | Width | 2 | Inches | |||
| 5.08 | cm | |||||
| W | Length | 3 | Inches | |||
| 7.62 | cm | |||||
| h | Component height | 0.41 | Inch | |||
| 1.04 | cm | |||||
| REFDES | COUNT | VALUE | DESCRIPTION | SIZE | PART NUMBER | MFR |
|---|---|---|---|---|---|---|
| C1 | 1 | 470 μF | Capacitor, aluminum, 470-μF, 25-V, 20% | 0.457 x 0.406 | EEVFK1E471P | Panasonic |
| C2, C10 | 2 | 0.1 μF | Capacitor, ceramic, 25-V, X7R, 20% | 0603 | Std | Vishay |
| C3 | 1 | 15 nF | Capacitor, ceramic, 25-V, X7R 20% | 0603 | Std | Vishay |
| C4 | 1 | 47 pF | Capacitor, ceramic, 25-V, X7R, 20% | 0603 | Std | Vishay |
| C5 | 1 | 1.8 nF | Capacitor, ceramic, 25-V, X7R 20% | 0603 | Std | Vishay |
| C6 | 1 | 680 pF | Capacitor, ceramic, 25-V, X7R 20% | 0603 | Std | Vishay |
| C7 | 1 | 51 pF | Capacitor, ceramic, 25-V, COG 20% | 0603 | Std | Vishay |
| C8, C11 | 2 | 0.1 μF | Capacitor, ceramic, 25-V, X7R, 20% | 0603 | Std | Vishay |
| C9 | 1 | 1 μF | Capacitor, ceramic, 25-V, X7R, 20% | 0805 | Std | Vishay |
| C12, C14, C15 | 3 | 22 μF | Capacitor, ceramic, 22-μF, 16-V, X5R, 20% | 1812 | C4532X5R1C226MT | TDK |
| C13 | 1 | 2.2 nF | Capacitor, ceramic, 25-V, X7R, 20% | 0603 | Std | Vishay |
| C16 | 1 | 470 μF | Capacitor, aluminum, SM, 6.3-V, 300-mΩ (FC series) | 8 × 10 | Std | Panasonic |
| C17 | 1 | 47 μF | Capacitor, ceramic, 47-uF, 6.3-V, X5R, 20% | 1812 | C4532X5R0J476MT | TDK |
| D1 | 1 | BAT54 | Diode, Schottky, 200-mA, 30-V | SOT23 | BAT54 | Vishay |
| J1, J2 | 2 | ED1609-ND | Terminal block, 2-pin, 15-A, 5,1-mm | 0.40 × 0.35 | ED1609 | OST |
| J3 | 1 | PTC36SAAN | Header, 2-pin, 100-mil spacing, (36-pin strip) | 0.100 × 2 | PTC36SAAN | Sullins |
| L1 | 1 | 2.5 μH | Inductor, SMT, 2.5 μH, 16.5-A, 3.4- mΩ | 0.515 × 0.516 | MLC1550-252ML | Coilcraft |
| Q1 | 1 | Si7860DP | MOSFET, N-channel, 30-V, 18-A, 8.0-mΩ | PWRPAK S0-8 | Si7860DP | Vishay |
| Q2 | 1 | Si7336ADP | MOSFET, N-channel, 30-V, 18-A, 40-mΩ | PWRPAK S0-8 | Si7886ADP | Vishay |
| Q3 | 1 | FDV301N | MOSFET, N-channel, 25-V, 220-mA, 5-Ω | SOT23 | FDV301N | Fairchild |
| R1 | 1 | 10 kΩ | Resistor, chip, 1/16-W, 20% | 0603 | Std | Std |
| R2, R6 | 2 | 165 kΩ | Resistor, Chip, 1/16-W, 20% | 0603 | Std | Std |
| R3 | 1 | 32.4 kΩ | Resistor, chip, 1/16-W, 20% | 0603 | Std | Std |
| R4, R11 | 2 | 0 Ω | Resistor, chip, 1/16-W, 20% | 0603 | Std | Std |
| R5 | 1 | 21.5 kΩ | Resistor, chip, 1/16-W, 20% | 0603 | Std | Std |
| R7 | 1 | 51 kΩ | Resistor, chip, 1/16-W, 20% | 0603 | Std | Std |
| R8 | 1 | 3.3 kΩ | Resistor, chip, 1/16-W, 20% | 0603 | Std | Std |
| R9 | 1 | 1.8 kΩ | Resistor, chip, 1/16-W, 20% | 0603 | Std | Std |
| R10 | 1 | 330 kΩ | Resistor, chip, 1/16-W, 20% | 0603 | Std | Std |
| R12 | 1 | 51 Ω | Resistor, chip, 1/16-W, 20% | 0603 | Std | Std |
| R13 | 1 | 1 kΩ | Resistor, chip, 1/16-W, 20% | 0603 | Std | Std |
| U1 | 1 | TPS40077PWP | IC, Texas Instruments | PWP16 | TPS40077PWP | TI |