Overview
The NCV7702B, and by extension the NCV7703BD2R2G, is a dual H-bridge driver IC designed for automotive and industrial applications. This device is intended for driving DC or stepper motors, relays, solenoids, and other unipolar or bipolar loads. It features four half-bridge outputs configured as two independent channels, allowing for flexible control of bridge operation through six TTL-compatible inputs.
The IC operates in standby, run, or brake modes and includes multiple fault protection mechanisms such as overcurrent, overvoltage, and overtemperature detection. It also provides diagnostic outputs to report fault conditions.
Key Specifications
| Rating | Value | Unit |
|---|---|---|
| Power Supply Voltage, VB | -0.5 to 30 | V |
| Peak Transient Voltage (46 V Load Dump @ VB = 14 V) | 60 | V |
| Logic Inputs & Status Outputs | -0.3 to 7.0 | V |
| Junction Temperature, TJ | 150 | °C |
| Storage Temperature Range | -65 to 150 | °C |
| Package Thermal Resistance: Junction-to-Case, RJC | 9 | °C/W |
| Package Thermal Resistance: Junction-to-Ambient, RJA | 55 | °C/W |
| ESD Capability: Human Body Model | 2.0 kV | |
| ESD Capability: Machine Model | 200 V | |
| Peak Reflow Soldering Temperature (60 to 150 seconds at 217°C) | 260 peak | °C |
| Moisture Sensitivity Level (MSL) | 3 |
Key Features
- Single 7 V-16 V Supply
- Low Standby Current: < 1.0 μA Typically
- 3.3 V / 5 V Compatible Inputs
- Independent Channel Enable
- Channels Configurable as Full-Bridge Drive, Half-Bridge, High Side or Low Side Drive
- On-Chip Recirculation Diodes
- Fault Protection with Automatic Recovery for Overcurrent, Overvoltage, Overtemperature
- Fault Diagnostic STATUS Outputs
- Internally Fused Leads in SO–24L Package
- AEC Qualified and PPAP Capable
- Pb-Free Devices
Applications
- Automotive and Industrial Driver for DC or Stepper Motors
- Relays or Solenoids
- Unipolar or Bipolar Loads
Q & A
- What is the primary function of the NCV7702B?
The NCV7702B is a dual H-bridge driver IC designed for driving DC or stepper motors, relays, solenoids, and other unipolar or bipolar loads.
- What are the operating modes of the NCV7702B?
The IC operates in standby, run, or brake modes.
- What fault protection mechanisms are included in the NCV7702B?
The IC includes overcurrent, overvoltage, and overtemperature detection with automatic recovery.
- How are the channels controlled in the NCV7702B?
Each channel is controlled by separate enable inputs and logic level inputs.
- What is the purpose of the STATUS outputs?
The STATUS outputs report the fault status of each channel independently during overcurrent faults and together during overvoltage or overtemperature faults.
- What is the significance of the CT pin in the NCV7702B?
The CT pin is used to program the period of the overcurrent duty cycle timer using an external capacitor.
- What are the thermal protection features of the NCV7702B?
The IC includes overtemperature detection circuitry that monitors the junction temperature and switches off both channels when the detection threshold is exceeded.
- How does the NCV7702B handle cross conduction currents?
Cross conduction currents within each half-bridge are suppressed by the use of a dead-band timer.
- Is the NCV7702B AEC qualified?
Yes, the NCV7702B is AEC qualified and PPAP capable.
- What is the package type of the NCV7702B?
The IC is available in an SO–24L package with internally fused leads.
