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TMC246A

Features: • Sensorless stall detection StallGuard™ and load measurement integrated• Control via SPI with easy-to-use 12 bit protocol or external analog / digital signals• Short circuit, overvoltage and overtemperature protection integrated• Status flags for overcurren...

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SeekIC No. : 004523563 Detail

TMC246A: Features: • Sensorless stall detection StallGuard™ and load measurement integrated• Control via SPI with easy-to-use 12 bit protocol or external analog / digital signals• Sho...

TMC246A Data Sheet

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Part Number:
TMC246A
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

• Sensorless stall detection StallGuard™ and load measurement integrated
• Control via SPI with easy-to-use 12 bit protocol or external analog / digital signals
• Short circuit, overvoltage and overtemperature protection integrated
• Status flags for overcurrent, open load, over temperature, temperature pre-warning, undervoltage
• Integrated 4 bit DACs allow up to 16 times microstepping via SPI, any resolution via analog control
• Mixed decay feature for smooth motor operation
• Slope control user programmable to reduce electromagnetic emissions
• Chopper frequency programmable via a single capacitor or external clock
• Current control allows cool motor and driver operation
• 7V to 34V motor supply voltage (A-type)
• Up to 1500mA output current and more than 800mA at 105°C
• 3.3V or 5V operation for digital part
• Low power dissipation via low RDS-ON power stage
• Standby and shutdown mode available


Pinout

Connection Diagram


Specifications

Symbol Parameter Min Max Unit
VS Supply voltage (A-type) 36 V
VS Supply voltage (non-A-type) 30 V
VMD Supply and bridge voltage max. 20000s
(non-A-type: device disabled)		 40 V
VTR Power transistor voltage VOA-VBRA, VOBVBRB,
VSA-VOA, VSB-VOB (A-type)		 40 V
VTR Power transistor voltage VOA-VBRA, VOBVBRB,
VSA-VOA, VSB-VOB (non-A-type)		 30 V
VCC Logic supply voltage -0.5 6.0 V
IOP Output peak current (10s pulse) +/-7 A
IOC Output current
(continuous, one bridge)TA 85
TA 105
TA 125		 1500
1000
800		 mA
VI Logic input voltage -0.3 VCC+0.3V V
VIA Analog input voltage -0.3 VCC+0.3V V
IIO Maximum current to / from digital pins
and analog inputs		 +/-10 mA
VVT Short-to-ground detector input voltage VS-1V VS+0.3V V
TJ Junction temperature -40 150 (1)
TSTG Storage temperature -55 150



Description

The TMC246 / TMC246A (1) is a dual full bridge driver IC for bipolar stepper motor control applications. The integrated unique sensorless stall detection (pat. pend.) StallGuard™ makes it a good choice for applications, where a reference point is needed, but where a switch is not desired. Its ability to predict an overload makes the TMC246 an optimum choice for drives, where a high reliability is desired. The TMC246 is realized in a HVCMOS technology combined with Low-RDS-ON high efficiency MOSFETs (pat. pend.). TMC246A allows to drive a coil current of up to 1500mA even at high environment temperatures. Its low current consumption and high efficiency together with the miniature package make it a perfect solution for embedded motion control and for battery powered devices.

Internal DACs allow microstepping as well as smart current control. The device TMC246A can be controlled by a serial interface (SPI™i) or by analog / digital input signals. Short circuit, temperature, undervoltage and overvoltage protection are integrated.




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