The DRV814x-Q1 family of devices is a fully integrated half-bridge driver intended for a wide range of automotive applications. Designed in a BiCMOS high power process technology node, this monolithic family of devices in a power package offer excellent power handling and thermal capability while providing compact package size, ease of layout, EMI control, accurate current sense, robustness, and diagnostic capability. This family provides an identical pin function with scalable RON (current capability) to support different loads.
The devices integrate a N-channel half-bridge, charge pump regulator, high-side current sensing with regulation, current proportional output, and protection circuitry. A low-power sleep mode is provided to achieve low quiescent current. The devices offer voltage monitoring and load diagnostics as well as protection features against over current and over temperature. Fault conditions are indicated on nFAULT pin. DRV8143 and DRV8145 are available in three variants - hardwired interface: HW (H) and two SPI interface variants: SPI(P) and SPI(S), with SPI (P) for externally supplied logic supply and SPI (S) for internally generated logic supply. DRV8144 is available only in two variants: SPI(S) and HW(H). The SPI interface variants offer more flexibility in device configuration and fault observability.
PART NUMBER | PACKAGE | BODY SIZE (nominal) |
---|---|---|
DRV8143-Q1 | VQFN-HR (14) | 3mm X 4.5mm |
DRV8143-Q1 | HVSSOP (28) | 3mm X 7.3mm |
Table 4-1 summarizes the RON and package differences between devices in the DRV814x-Q1 family.
PART NUMBER(1) | (LS + HS) RON | IOUT MAX | PACKAGE | BODY SIZE (nominal) | Variants |
---|---|---|---|---|---|
DRV8143-Q1 | 42mΩ | 20A | VQFN-HR (14) | 3mm X 4.5mm | HW (H), SPI (S) |
DRV8143-Q1 | 49mΩ | 20A | HVSSOP (28) | 3mm X 7.3mm | HW (H), SPI (P) |
DRV8144-Q1 | 23.6mΩ | 30A | VQFN-HR (16) | 3mm X 6mm | HW (H), SPI (S) |
DRV8145-Q1 | 16mΩ | 46A | VQFN-HR (16) | 3.5mm X 5.5mm | HW (H), SPI (S) |
DRV8145-Q1 | 19mΩ | 46A | HTSSOP (28) | 4.4mm X 9.7mm | SPI (P) |
Table 4-2 summarizes the feature differences between the SPI and HW interface variants in the DRV814x-Q1 family. In general, the SPI variant offers more configurability, bridge control options, diagnostic feedback, redundant driver shutoff, improved Pin FMEA, and additional features.
In addition, the SPI variant has two options - SPI (S) variant and SPI (P) variant. The SPI (P) variant supports an external, low voltage 5V supply to the device through the VDD pin for the device logic, whereas in the SPI (S) variant, this supply is internally derived from the VM pin. With this external logic supply, the SPI (P) variant avoids device brown out (reset of device) during VM under voltage transients.
FUNCTION | HW (H) Variant | SPI (S) Variant | SPI (P) Variant |
---|---|---|---|
Bridge control | Pin only | Individual pin "and/or" register bit with pin status indication (Refer Register Pin control) | |
Sleep function | Available through nSLEEP pin | Not available | |
External logic supply to the device | Not supported | Not supported | Supported through VDD pin |
Clear fault command | Reset pulse on nSLEEP pin | SPI CLR_FAULT command | |
Slew rate | 6 levels | 8 levels | |
Over current protection (OCP) | Fixed at the highest setting | 3 choices for thresholds, 4 choices for filter time | |
ITRIP regulation | 5 levels with disable & fixed TOFF time | 7 levels with disable & indication, with programmable TOFF time | |
Individual fault reaction configuration between retry or latched behavior | Not supported, either all latched or all retry | Supported | |
Detailed fault logging and device status feedback | Not supported, nFAULT pin monitoring necessary | Supported, nFAULT pin monitoring optional | |
VM over voltage | Fixed | 4 threshold choices | |
On-state (Active) diagnostics | Not supported | Supported for high-side loads | |
Spread spectrum clocking (SSC) | Not supported | Supported |
Device | Package Symbolization | DEVICE_ID Register |
---|---|---|
DRV8143H-Q1 | 8143H | Not applicable |
DRV8144H-Q1 | 8144H | Not applicable |
DRV8145H-Q1 | 8145H | Not applicable |
DRV8143S-Q1 | 8143S | 0 x BA |
DRV8144S-Q1 | 8144S | 0 x CA |
DRV8145S-Q1 | 8145S | 0 x DA |
DRV8143P-Q1 | 8143P | 0 x BE |
DRV8145P-Q1 | 8145P | 0 x DE |