New And Orignal Drv11873pwpr Intergrated Circuit Ic Chip

short description:

DRV11873 is a three-phase, sensorless motor driver with integrated power MOSFETs with drive current capability up to 1.5-A continuous and 2-A peak. DRV11873 is specifically designed for fan motor drive applications with low noise and low external component count. DRV11873 has built-in overcurrent protection with no external current sense resistor needed. The synchronous rectification mode of operation achieves increased efficiency for motor driver applications. DRV11873 outputs FG and RD to indicate motor status with open-drain output. A 150° sensorless BEMF control scheme is implemented for a three-phase motor. DRV11873 is available in the thermally-efficient 16-pin TSSOP package. The operation temperature is specified from –40°C to 125°C.

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Product Detail

Product Tags

Product Attributes

TYPE	DESCRIPTION
Category	Integrated Circuits (ICs) PMIC - Motor Drivers, Controllers
Mfr	Texas Instruments
Series	-
Package	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®
Product Status	Active
Motor Type - Stepper	-
Motor Type - AC, DC	Brushless DC (BLDC)
Function	Driver - Fully Integrated, Control and Power Stage
Output Configuration	Half Bridge (3)
Interface	PWM
Technology	Power MOSFET
Step Resolution	-
Applications	Fan Motor Driver
Current - Output	1.5A
Voltage - Supply	5V ~ 16V
Voltage - Load	0V ~ 17V
Operating Temperature	-40°C ~ 125°C (TJ)
Mounting Type	Surface Mount
Package / Case	16-PowerTSSOP (0.173", 4.40mm Width)
Supplier Device Package	16-HTSSOP
Base Product Number	DRV11873
SPQ	2000/pcs\

Introduction

The controller is a command device that changes the wiring of the main circuit or control circuit and changes the resistance value in the circuit in a predetermined order to control the starting, speed control, braking and reversing of the motor. It is composed of program counter, instruction register, instruction decoder, timing generator and operation controller, which is the "decision-making body" to issue commands, i.e., to coordinate and direct the operation of the whole computer system.

Features

Input Voltage Range: 5 to 16 V
Six Integrated MOSFETs With 1.5-A Continuous

Output Current
Total Driver H + L RDSON 450 mΩ
Sensorless Proprietary BMEF Control Scheme
150° Commutation
Synchronous Rectification PWM Operation
FG and RD Open-Drain Output
5-V LDO for External Use up to 20 mA
PWMIN Input from 7 to 100 kHz
Overcurrent Protection With Adjustable Limit

Through External Resistor
Lock Detection
Voltage Surge Protection
UVLO
Thermal Shutdown

Main classifications

The controller is divided into a combination logic controller and a microprogram controller, and each of the two controllers has its own strengths and weaknesses. The design of the combinatorial logic controller is troublesome and complex, and once the design is complete, it cannot be modified or expanded, but it is fast. The microprogram controller is convenient to design, the structure is simple, it is convenient to modify or expand, and the function of modifying a machine instruction only needs to recompile the corresponding microprogram; To add a machine instruction, simply add a microprogram to the control memory, however, by executing a microprogram. The specific comparison is as follows: The combinatorial logic controller, also known as the hard wiring controller, is composed of logic circuits and relies entirely on hardware to achieve the function of instructions.

How it works

Electromagnetic chuck controller: ac voltage 380V after the transformer buck, rectifier into 110V DC through the control device into the chuck at this time the chuck is magnetized, demagnetization through the reverse voltage circuit, the controller to achieve demagnetization function。

Access Control Controller: The access control controller works in two modes. One is the inspection mode, and the other is the recognition mode. In patrol mode, the controller continuously sends a query code to the reader and receives a reply command from the reader. This pattern remains until the reader senses the card. When the card reader senses the card, the card reader produces different replies to the controller's inspection command, in this reply command, the card reader transmits the read sensor card internal code data to the access control controller, so that the access control controller enters the recognition mode. In the recognition mode of the access control controller, the access control controller analyzes the internal code of the induction card, compares it with the card data stored in the device, and implements subsequent actions. After the access controller completes the action of receiving data, it will send a command to reply to the card reader, so that the card reader can return to the state, and at the same time, the access control controller will return to patrol mode.