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Product Detailed Parameters
- Description：H-BRIDGE BRUSHED DC MOTOR DRIVER
- Series：-
- Mfr：NOVOSENSE
- Package：Tape & Reel (TR),Cut Tape (CT)
- Motor Type - Stepper：-
- Motor Type - AC, DC：-
- Function：-
- Output Configuration：-
- Interface：-
- Technology：-
- Step Resolution：-
- Applications：-
- Current - Output：-
- Voltage - Supply：-
- Voltage - Load：-
- Operating Temperature：-
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Supplier Device Package：8-HSOP
- Grade：-
- Qualification：-
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Overview
The NSD7312A-Q1 is an automotive-grade single H-bridge driver for brushed DC motors, designed for applications such as electric inlet locks in vehicle charging systems. It operates within a 5V to 36V supply range and delivers up to 3.6A peak current with a typical on-resistance of 520mΩ. The device integrates power N-MOSFETs and features PWM current chopping regulation via the ISEN pin. It includes comprehensive protection mechanisms: undervoltage lockout (UVLO), overcurrent protection (OCP), thermal shutdown (TSD), and a dedicated nFAULT output. Qualified under AEC-Q100 Grade 1 standards, it supports automatic fault recovery and low-power sleep mode.
Feature Summary
- Integrates current mirror sensing for real-time load current monitoring without external shunt resistors
- Supports PWM current modulation to limit peak currents during startup or stall conditions
- Provides full protection against UVLO, OCP, and TSD with automatic recovery capabilities
Applications
- Electric inlet locking mechanisms for automotive onboard chargers (OBC)
- Brushed DC motor control in automotive body electronics
- Industrial motor drive modules requiring integrated current sensing
Procurement Notes
Verify that the specific suffix 'HSPR' corresponds to the HSOP8 package with exposed pad as documented in official Novosense datasheets. Confirm AEC-Q100 Grade 1 qualification status for the exact part number variant before integration into automotive safety-critical designs.
Selection Notes
Select this component when integrated current sensing is required to reduce PCB area and eliminate external sampling resistors. It is suitable for applications needing robust protection against transient loads and short circuits in automotive environments where AEC-Q100 compliance is mandatory.
Part Context
Part of the NSD731x series from Novosense, which includes variants like NSD7312 and NSD7312-Q1. The 'A' designation indicates the inclusion of internal current mirror functionality, distinguishing it from standard versions that rely on external sense resistors for current regulation.
Replacement Considerations
NSD7312-Q1 serves as a functional substitute if integrated current sensing is not required. Verify package compatibility and ensure the replacement meets the same voltage and current specifications for the target application.
FAQ
How does the NSD7312A-Q1 handle current regulation?
It uses an internal current mirror to provide a proportional voltage at the ISEN pin, allowing the MCU to monitor load current directly without external shunt resistors.
What protection features are included?
The device includes UVLO, OCP, TSD, and a nFAULT pin to alert the controller. It also supports automatic fault recovery once the fault condition is removed.
