SLVSCF7B February 2014 – November 2017 DRV8308
PRODUCTION DATA.
PIN | I/O(1) | DESCRIPTION | EXTERNAL COMPONENTS OR CONNECTIONS | |
---|---|---|---|---|
NAME | NO. | |||
POWER AND GROUND | ||||
CP1 | 30 | PWR | Charge pump flying capacitor | Connect a 0.1-μF 35-V capacitor between CP1 and CP2 |
CP2 | 29 | PWR | ||
GND | 26, PPAD | PWR | Ground reference. Pin 26 and the exposed thermal pad are internally connected. | Connect to board GND |
VCP | 28 | PWR | Charge pump storage capacitor | Connect a 1-μF 35-V ceramic capacitor to VM |
VINT | 25 | PWR | Internal 1.8-V core voltage regulator bypass | Bypass to GND with a 1-μF 6.3-V ceramic capacitor |
VM | 27 | PWR | Motor supply voltage | Connect to motor supply voltage. Bypass to GND with a 0.1-μF ceramic capacitor, plus a large electrolytic capacitor (47 μF or larger is recommended), with a voltage rating of 1.5× to 2.5× VM. |
VREG | 24 | PWR | 5-V regulator output. Active when ENABLE is active. | Bypass to GND with a 0.1-μF 10-V ceramic capacitor. Can provide 5-V power to Hall sensors. |
VSW | 7 | PWR | Switched VM power output. When ENABLE is active, VM is applied to this pin. | Can be used for powering Hall elements, along with added series resistance. |
CONTROL | ||||
BRAKE | 20 | I | Causes motor to brake. Polarity is programmable. Internal pulldown resistor. | |
CLKIN | 19 | I | The clock input, used in Clock Frequency Mode and Clock PWM Mode. Internal pulldown resistor. | |
DIR | 21 | I | Sets motor rotation direction. Polarity is programmable. Internal pulldown resistor. | |
ENABLE | 22 | I | Enables and disables motor. Polarity is programmable. Internal pulldown resistor. | |
FAULTn | 17 | OD | Fault indicator – active low when overcurrent, or overtemperature. Open-drain output. | |
FGOUT | 16 | OD | Outputs a TACH signal generated from the FG amplifier or Hall sensors. Open-drain output. | |
LOCKn | 18 | OD | Outputs a signal that indicates the speed loop is locked. Open-drain output. | |
RESET | 23 | I | Active high to reset all internal logic. Internal pulldown resistor. | |
SERIAL INTERFACE | ||||
SCLK(2) | 11 | I/OD | Serial clock | SPI mode: Serial clock input. Data is clocked on rising edges. Internal pulldown resistor. EEPROM mode: Connect to EEPROM CLK. Open-drain output requires external pullup. |
SCS(2) | 12 | I/OD | Serial chip select | SPI mode: Active high enables serial interface operation. Internal pulldown resistor. EEPROM mode: Connect to EEPROM CS. Open-drain output requires external pullup. |
SDATAI | 14 | I | Serial data input | SPI mode: Serial data input. Internal pulldown resistor. EEPROM mode: Serial data input. Connect to EEPROM DO terminal. |
SDATAO | 15 | OD | Serial data output | SPI mode: Serial data output. Open-drain output. EEPROM mode: Connect to EEPROM DI. Open-drain output requires external pullup. |
SMODE | 13 | I | Serial mode | SPI mode: leave open or connect to ground for SPI interface mode. EEPROM mode: Connect to logic high to for EEPROM mode. |
POWER STAGE INTERFACE | ||||
ISEN | 31 | I | Low-side current sense resistor | Connect to low-side current sense resistor |
U | 33 | I | Measures motor phase voltages for VFETOCP | Connect to motor windings |
V | 36 | I | ||
W | 39 | I | ||
UHSG | 32 | O | High-side FET gate outputs | Connect to high-side 1/2-H N-channel FET gate |
VHSG | 35 | O | ||
WHSG | 38 | O | ||
ULSG | 34 | O | Low-side FET gate outputs | Connect to low-side 1/2-H N-channel FET gate |
VLSG | 37 | O | ||
WLSG | 40 | O | ||
HALL AND FG INTERFACE | ||||
FGFB | 8 | O | FG amplifier feedback pin | Connect feedback network to FGIN– |
FGINN_TACH | 9 | I(3) | FG amplifier negative input or TACH input | Connect to FG trace and filter components. When using a TACH with FGSEL= 3, connect a logic-level TACH signal. If unused, connect FGFB to FG–. |
FGINP | 10 | I/O | FG amplifier positive input | Connect to FG trace and filter components on the PCB (if used). |
UHP | 1 | I | Hall sensor U positive input | Connect to Hall sensors. Noise filter capacitors may be desirable, connected between the + and – Hall inputs. |
UHN | 2 | I | Hall sensor U negative input | |
VHP | 3 | I | Hall sensor V positive input | |
VHN | 4 | I | Hall sensor V negative input | |
WHP | 5 | I | Hall sensor W positive input | |
WHN | 6 | I | Hall sensor W negative input |