DRV8251A

Name: DRV8251A
Brand: TI
SKU: DRV8251A
Price: 0.645 USD

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50-V-, 4,1-A-H-Brücken-Motortreiber mit integrierter Stromregelung & Stromsensorrückkopplung

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Datenblatt

document-pdfAcrobat DRV8251A 4.1-A Brushed DC Motor Driver with Integrated Current Sense and Regulation datasheet (Englisch) PDF | HTML

DRV8251A

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Datenblatt

Jetzt bestellen

Produktdetails

Number of full bridges

1

Vs (min) (V)

4.5

Vs ABS (max) (V)

50

Peak output current (A)

4.1

RDS(ON) (HS + LS) (mΩ)

450

Sleep current (µA)

1

Control mode

PWM

Control interface

Hardware (GPIO)

Features

Current Regulation, Integrated Current Sensing, Low-Power Sleep Mode

Rating

Catalog

Operating temperature range (°C)

-40 to 150

Number of full bridges

1

Vs (min) (V)

4.5

Vs ABS (max) (V)

50

Peak output current (A)

4.1

RDS(ON) (HS + LS) (mΩ)

450

Sleep current (µA)

1

Control mode

PWM

Control interface

Hardware (GPIO)

Features

Current Regulation, Integrated Current Sensing, Low-Power Sleep Mode

Rating

Catalog

Operating temperature range (°C)

-40 to 150

HSOIC (DDA)

8

29.4 mm² 4.9 x 6

N-channel H-bridge brushed DC motor driver
4.5-V to 48-V operating supply voltage range
Pin-to-pin, R_DS(on), voltage, and current sense/regulation variants (external shunt resistor and integrated current mirror)
- DRV8870: 6.5-V to 45-V, 565-mΩ, shunt
- DRV8251: 4.5-V to 48-V, 450-mΩ, shunt
- DRV8251A: 4.5-V to 48-V, 450-mΩ, mirror
- DRV8231: 4.5-V to 33-V, 600-mΩ, shunt
- DRV8231A: 4.5-V to 33-V, 600-mΩ, mirror
High output current capability: 4.1-A Peak
PWM control interface
Supports 1.8-V, 3.3-V, and 5-V logic inputs
Integrated IPROPI current sensing for stall detection and current regulation
Low-power sleep mode
- <1-µA at V_VM = 24-V, T_J = 25°C
Small package and footprint
- 8-Pin HSOP with PowerPAD™, 4.9 × 6.0 mm
Integrated protection features
- VM undervoltage lockout (UVLO)
- Auto-retry overcurrent protection (OCP)
- Thermal shutdown (TSD)

N-channel H-bridge brushed DC motor driver
4.5-V to 48-V operating supply voltage range
Pin-to-pin, R_DS(on), voltage, and current sense/regulation variants (external shunt resistor and integrated current mirror)
- DRV8870: 6.5-V to 45-V, 565-mΩ, shunt
- DRV8251: 4.5-V to 48-V, 450-mΩ, shunt
- DRV8251A: 4.5-V to 48-V, 450-mΩ, mirror
- DRV8231: 4.5-V to 33-V, 600-mΩ, shunt
- DRV8231A: 4.5-V to 33-V, 600-mΩ, mirror
High output current capability: 4.1-A Peak
PWM control interface
Supports 1.8-V, 3.3-V, and 5-V logic inputs
Integrated IPROPI current sensing for stall detection and current regulation
Low-power sleep mode
- <1-µA at V_VM = 24-V, T_J = 25°C
Small package and footprint
- 8-Pin HSOP with PowerPAD™, 4.9 × 6.0 mm
Integrated protection features
- VM undervoltage lockout (UVLO)
- Auto-retry overcurrent protection (OCP)
- Thermal shutdown (TSD)

The DRV8251A device is an integrated motor driver with N-channel H-bridge, charge pump, current sense feedback, current regulation, and protection circuitry. The charge pump improves efficiency by supporting N-channel MOSFET half bridges and 100% duty cycle driving.

An internal current mirror architecture on the IPROPI pin implements current sensing and regulation. This eliminates the need for a large power shunt resistor, saving board area and reducing system cost. The IPROPI current-sense output allows a microcontroller to detect motor stall or changes in load conditions. The external voltage reference pin, VREF, determines the threshold of current regulation during start-up and stall events without interaction from a microcontroller.

A low-power sleep mode achieves ultra-low quiescent current draw by shutting down most of the internal circuitry. Internal protection features include supply undervoltage lockout, output overcurrent, and device overtemperature.

The DRV8251A is part of a family of devices which come in pin-to-pin, scalable R_DS(on) and supply voltage options to support various loads and supply rails with minimal design changes. See Section 5 for information on the devices in this family. View the full portfolio of brushed motor drivers on ti.com.

The DRV8251A device is an integrated motor driver with N-channel H-bridge, charge pump, current sense feedback, current regulation, and protection circuitry. The charge pump improves efficiency by supporting N-channel MOSFET half bridges and 100% duty cycle driving.

An internal current mirror architecture on the IPROPI pin implements current sensing and regulation. This eliminates the need for a large power shunt resistor, saving board area and reducing system cost. The IPROPI current-sense output allows a microcontroller to detect motor stall or changes in load conditions. The external voltage reference pin, VREF, determines the threshold of current regulation during start-up and stall events without interaction from a microcontroller.

A low-power sleep mode achieves ultra-low quiescent current draw by shutting down most of the internal circuitry. Internal protection features include supply undervoltage lockout, output overcurrent, and device overtemperature.

The DRV8251A is part of a family of devices which come in pin-to-pin, scalable R_DS(on) and supply voltage options to support various loads and supply rails with minimal design changes. See Section 5 for information on the devices in this family. View the full portfolio of brushed motor drivers on ti.com.

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Alle anzeigen 4

	Typ	Titel		Datum
*	Data sheet	DRV8251A 4.1-A Brushed DC Motor Driver with Integrated Current Sense and Regulation datasheet	PDF \| HTML	21 Aug 2020
	Certificate	DRV8251AEVM EU RoHS Declaration of Comformity (DoC)		09 Nov 2021
	User guide	DRV8251 Evaluation Module User's Guide		25 Mai 2021
	Technical article	Using brushed motors to improve battery life and reliability in vacuum robots	PDF \| HTML	17 Jul 2019

Design und Entwicklung

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Evaluierungsplatine

DRV8251AEVM — DRV8251A Motortreiber-Evaluierungsmodul

Das Evaluierungsmodul DRV8251A (EVM) ermöglicht die einfache Evaluierung des DRV8251A-Bausteins. Das EVM wurde so programmiert und konfiguriert, dass es sofort betriebsbereit ist und Ihre Motoren gleich zum Drehen bringen kann.

Der DRV8251A ist ein einzelner H-Brückentreiber mit 4,5 V bis 48 V (...)

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DRV8251A

50-V-, 4,1-A-H-Brücken-Motortreiber mit integrierter Stromregelung & Stromsensorrückkopplung

DRV8251A

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