Overview
The DRV8243-Q1, produced by Texas Instruments, is a fully integrated automotive H-bridge driver designed for a wide range of automotive applications. This device is AEC-Q100 qualified and features a temperature grade 1 rating, operating from –40°C to +125°C. It is built using BiCMOS high power process technology, offering excellent power handling and thermal capabilities in a compact package.
Key Specifications
| Parameter | Value |
|---|---|
| Operating Voltage Range | 4.5 V to 35 V (40 V absolute maximum) |
| Output Current | Up to 12 A |
| PWM Frequency | Up to 25 kHz with automatic dead time assertion |
| Package Type | VQFN-HR (RXY) with 14 pins |
| Logic Input Voltage | Supports 3.3 V and 5 V |
| Sleep Current | Typically 1 µA at 25°C |
| Interface Variants | HW (H), SPI (S), SPI (P) |
| Protection Features | Over current, over temperature, load diagnostics, fault indication on nFAULT pin |
Key Features
- 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)
- Low-power sleep mode with low quiescent current
- Supports single full bridge using PWM or PH/EN mode, and two half-bridges using Independent mode
Applications
The DRV8243-Q1 is designed for various automotive applications, including but not limited to electric power steering, electric water pumps, fuel pumps, and other motor control systems. Its robust design and comprehensive protection features make it suitable for demanding automotive environments.
Q & A
- What is the operating voltage range of the DRV8243-Q1?
The DRV8243-Q1 operates from 4.5 V to 35 V with an absolute maximum of 40 V. - What is the maximum output current of the DRV8243-Q1?
The maximum output current is up to 12 A. - What are the interface variants available for the DRV8243-Q1?
The device is available in HW (H), SPI (S), and SPI (P) variants. - Does the DRV8243-Q1 support low EMI operations?
Yes, it supports configurable slew rate and spread spectrum clocking for low EMI. - What protection features are included in the DRV8243-Q1?
The device includes over current, over temperature, load diagnostics, and fault indication on the nFAULT pin. - How does the DRV8243-Q1 handle current sensing?
The device integrates current sense functionality, eliminating the need for a shunt resistor. - What is the typical sleep current of the DRV8243-Q1?
The typical sleep current is 1 µA at 25°C. - Can the DRV8243-Q1 be configured for different control modes?
Yes, it supports single full bridge using PWM or PH/EN mode, and two half-bridges using Independent mode. - Is the DRV8243-Q1 AEC-Q100 qualified?
Yes, the DRV8243-Q1 is AEC-Q100 qualified for automotive applications. - What is the temperature range for the DRV8243-Q1?
The device operates from –40°C to +125°C.
