DRV8244-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 can be configured as a single full-bridge driver or as two independent half-bridge drivers. Designed in Texas Instruments’ proprietary 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 also has identical pin function with scalable RON (current capability) to support different loads.

The devices integrate a N-channel H-bridge, charge pump regulator, high-side current sensing and 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. The devices are available in two interface variants - hardware (HW) and SPI. SPI interface device has two variant choices, \"P\" for externally supplied logic supply, and \"S\" for internally generated logic supply. The SPI variant offers 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, TA

• Functional Safety-Capable
• Documentation available to aid functional safety system design

• 40 V Abs Max, 4.5 V to 35 V operating range
• VQFN-HR package: RON_LS + RON_HS: 47 mΩ
• HVSSOP package: RON_LS + RON_HS: 60 mΩ
• IOUT Max = 21 A
• 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 / 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 detection
• Fault indication on nFAULT pin

• Supports 3.3-V, 5-V logic inputs
• Low sleep current - 1µA typical at 25°C
• SPI or Hardware interface variant option
• Configurable modes to operate the device as:
• Single full bridge using PWM or PH/EN mode
• Two half-bridges using Independent mode

• Device comparison table shows the complete family
• Typical loads include unidirectional and bidirectional brushed DC motors, solenoids, relays and other inductive or resistive loads.