12 SERVO 12.2015
Brushed DC Motor Driver with
Integrated Current Sensing
Texas Instruments has now introduced a family of three brushed DC gate drivers featuring the industry’s first
device with integrated current sensing. With this
avoid the power
external sense resistors. Compared to competitive devices,
the DRV8871 motor driver family helps reduce design
complexity, power consumption, and board space in end
Expanding TI’s brushed DC motor driver portfolio, the
DRV8871 is one of three new brushed DC drivers with
integrated field-effect transistors (FETs), developed for
space-constrained designs. The DRV8870 features
integrated regulation to limit current to an external current-sense resistor. The DRV8872 provides fault monitoring to
increase system reliability.
Key features and benefits include:
• Reduced system complexity: When designing with
the DRV8871, the elimination of discrete sense resistors
Hitec introduces their D-Series Dynamo Servos: the titanium
gear D940TW, D945TW, D950TW,
and D980TW; the metal gear
D625MW and D645MW; and the
waterproof mega scale, IP- 67 rated
D840WP and D845WP. All Hitec D-Series servos have been designed
using brand new, cutting edge,
custom engineering. Combining
industry leading high resolution,
state-of-the-art ultra-response technology with a 32-bit MCU
and 12-bit ADC (analog-to-digital converter) for
unprecedented programmability and flexibility, these servos
deliver smooth and precise movement.
The speedy powerful line operates on a wide 4. 8 8. 4
voltage range, allowing use with any common battery
chemistry without the need for adapters or regulators.
Featuring Hitec’s industry standard 25-tooth
output spline with 3 mm hex screw, each D-series
servo brings performance previously not
The titanium gear is priced between $147.99-
$169.99; the metal gear is priced at $39.99; and
the waterproof gear is priced at $99.99.
Also available from Hitec is their Universal Programming Interface retailing at $19.99.
• Ability to customize parameters of Hitec’s
programmable DXXX, HSB-9XXX, HS-7XXX, and
HS-5XXX series servos.
• Test settings prior to servo installation.
• Save and load servo parameter files and restore the
factory default files with the
DPC- 11 software.
Interested builders can
download the DPC- 11
software to a PC from the
For further information,