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1 Features

? AEC-Q100 qualified for automotive applications:

– Temperature grade 1: –40°C to +125°C, TA

? Documentation available to aid functional safety

system design

? 4.5-V to 35-V (40-V abs. max) operating range

? SPI(S) or HW(H) variant in VQFN-HR package:

RON_LS + RON_HS: 42 mΩ

? SPI(P) variant in HVSSOP package: RON_LS +

RON_HS: 49 mΩ

? IOUT Max = 20 A

? PWM frequency operation up to 125 KHz with

automatic dead time assertion

? Configurable slew rate and spread spectrum

clocking for low electromagnetic interference (EMI)

? Integrated current sense (eliminates shunt resistor)

? Proportional load current output on IPROPI pin

? Configurable current regulation

? Protection and diagnostic features with

configurable fault reaction (latched or retry)

– Load diagnostics in both the off-state and onstate

to detect open load and short circuit

– Voltage monitoring on supply (VM) and charge

pump (VCP)

– Over current protection

– Over temperature protection

– Fault indication on nFAULT pin

? Supports 3.3-V, 5-V logic inputs

? Low sleep current - 1μA typical at 25°C

? Device family comparison table

2 Applications

? Automotive brushed DC motors, Solenoids

? Door modules and seat modules

? Body control module (BCM)

? Fuel, water, oil pumps

? On board charger

3 Description

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.