●H-Bridge Motor Driver
○Drives One DC Motor, One Winding of a Stepper Motor, or Other Loads
●Wide 6.5-V to 45-V Operating Voltage
●565-mΩ Typical RDS(on) (HS + LS)
●3.6-A Peak Current Drive
●PWM Control Interface
●Current Regulation Without a Sense Resistor
●Low-Power Sleep Mode
●Small Package and Footprint
○8-Pin HSOP With PowerPAD™
○4.9 × 6 mm
●Integrated Protection Features
○VM Undervoltage Lockout (UVLO)
○Overcurrent Protection (OCP)
○Thermal Shutdown (TSD)
○Automatic Fault Recovery
The DRV8871 deviceis a brushed-DC motor driver for printers, appliances, industrial equipment, and other smallmachines. Two logic inputs control the H-bridge driver, which consists of four N-channel MOSFETsthat can control motors bidirectionally with up to 3.6-A peak current. The inputs can bepulse-width modulated (PWM) to control motor speed, using a choice of current-decay modes. Settingboth inputs low enters a low-power sleep mode.
The DRV8871 devicehas advanced current-regulation circuitry that does not use an analog voltage reference or externalsense resistor. This novel solution uses a standard low-cost, low-power resistor to set the currentthreshold. The ability to limit current to a known level can significantly reduce the system powerrequirements and bulk capacitance needed to maintain stable voltage, especially for motor startupand stall conditions.
The device is fully protected from faults and short circuits, including undervoltage(UVLO), overcurrent (OCP), and overtemperature (TSD). When the fault condition is removed, thedevice automatically resumes normal operation.
1. Who are the staff in your R & D department? What are your qualifications?
-R & D Director: formulate the company’s long-term R & D plan and grasp the direction of research and development; Guide and supervise r&d department to implement company r&d strategy and annual R&D plan; Control the progress of product development and adjust the plan; Set up excellent product research and development team, audit and training related technical personnel.
R & D Manager: make new product R & D plan and demonstrate the feasibility of the plan; Supervise and manage the progress and quality of r&d work; Research new product development and propose effective solutions according to customer requirements in different fields
R&d staff: collect and sort out key data; Computer programming; Conducting experiments, tests and analyses; Prepare materials and equipment for experiments, tests and analyses; Record measurement data, make calculations and prepare charts; Conduct statistical surveys
2. What is your product research and development idea?
- Product conception and selection product concept and evaluation product definition and project plan design and development product testing and validation launch to market