DRV8242-Q1数据手册TI中文资料规格书

描述 Description

The DRV824x-Q1 family of devices is a fully integrated H-bridge driver intended for a wide range of automotive applications. The device is a bidirectional full-bridge driver with PWM or phase-enable control. Designed in a BiCMOS high-power process technology node, this monolithic family of devices in a power package offers 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 R ON (current capability) to support different loads.

The devices integrate an N-channel H-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 the nFAULT pin. The devices 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. The SPI interface variants offer more flexibility in device configuration and fault observability.

特性 Features

• AEC-Q100 qualified for automotive applications:
• Temperature grade 1: –40°C to +125°C, T A

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• Documentation available to aid functional safety system design

• 4.5-V to 35-V (40-V abs. max) operating range
• QFN package: R ON_LS + R ON_HS = 250 mΩ
• I OUT Max = 6 A (QFN)
• PWM frequency operation up to 25 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 on-state to detect open load and short circuit
• Voltage monitoring on supply (VM)
• Over current protection
• Over temperature protection
• Fault indication on nFAULT pin

• Supports 3.3-V, 5-V logic inputs
• Low sleep current - 1.3 µA typical at 25°C
• 3 variants - HW (H), SPI (S), or SPI (P)
• Single full bridge using PWM or PH/EN mode
• Device family comparison table