Datasheet TMC7300 (TRINAMIC) - 4
| Fabricante | TRINAMIC |
| Descripción | POWER DRIVER FOR DC MOTORS. Low Voltage Driver for One or Two DC Motors up to 2A (2.4A) peak – UART based Control for Torque and Velocity. 4 Half Bridge Peripheral Driver Option |
| Páginas / Página | 43 / 4 — 1 Principles of Operation. +VM. Figure 1.1 TMC7300 basic application … |
| Formato / tamaño de archivo | PDF / 1.1 Mb |
| Idioma del documento | Inglés |
1 Principles of Operation. +VM. Figure 1.1 TMC7300 basic application block diagram for two DC motors. MODES OF OPERATION:
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TMC7300 DATASHEET (Rev. 1.01 / 2019-NOV-06) 4
1 Principles of Operation
The TMC7300 low voltage motor driver is intended for battery-operated, space- and standby-power- critical driver applications. It is optimized for DC motor control, as well as control of other magnetic actuators or lamp and LED driving. Optionally the driver supplies four protected half-bridges for direct control by four input signals. A highly efficient power stage, boosted by an internal charge pump for best in-class RDSon resistance, provides high motor current from a tiny package even at low supply voltages. With this, dual AA batteries can be drained down to typically 2.0V (voltage must not drop below 1.8V, provide sufficient supply buffer capacitors). The TMC7300 requires just a few control pins on its tiny package, as full control is possible via UART interface. Protection and diagnostic features support robust and reliable operation. A simple-to-use 8 bit UART interface opens up more tuning and control options. Industries’ most advanced low voltage motor driver family upgrades designs to efficient and reliable operation for cost-effective and highly competitive solutions. Place near IC with Optional external short path to die pad capacitor T 100n 1n-100n OU 10V P 8V C 1. V
+VM
VS TMC7300 A2 Or low ESR 100µF 100n 1.8V Voltage Internal charge 10µ electrolytic / depending A1 on supply resistance regulator STANDBY pump and motor current OA1
M
Full Bridge A OA2 AD0 UART Address AD1 BRA RSA Configuration Configuration DC motor PWM (GND or VIO) ENUART Interface BRA Connect directly MODE B. Dwersteg, © to GND plane BRB TRINAMIC 2016 Current UART interface UART UART interface regulator Use low inductivity SMD + Register Block type for RSA and RSB DIAG Programmable OB1 Driver error Diagnostic
M
Output Full Bridge B OB2 VIO/ 1.8V to 5V NSTDBY I/O voltage Standby STANDBY detector / standby 100n BRB RSB 500k CLK oscillator Connect directly to GND plane EN D AD N G PEID driver enable (disable prior to configuration!)
Figure 1.1 TMC7300 basic application block diagram for two DC motors MODES OF OPERATION: OPTION 1: DC-Motor Driver with Full Diagnostics and Control
This mode allows operation of two DC motors, or a single motor with double current.
UART
Options (label UART): + Full control over motor velocity and direction by setting PWM voltage for each motor + Control motor torque limit for both motors, by setting a common current limit + Use current limit to safely avoid battery overload during acceleration or when motor is blocked + Detailed diagnostics and thermal management + Passive braking and freewheeling for flexible, lowest power stop modes www.trinamic.com
1 Principles of Operation
The TMC7300 low voltage motor driver is intended for battery-operated, space- and standby-power- critical driver applications. It is optimized for DC motor control, as well as control of other magnetic actuators or lamp and LED driving. Optionally the driver supplies four protected half-bridges for direct control by four input signals. A highly efficient power stage, boosted by an internal charge pump for best in-class RDSon resistance, provides high motor current from a tiny package even at low supply voltages. With this, dual AA batteries can be drained down to typically 2.0V (voltage must not drop below 1.8V, provide sufficient supply buffer capacitors). The TMC7300 requires just a few control pins on its tiny package, as full control is possible via UART interface. Protection and diagnostic features support robust and reliable operation. A simple-to-use 8 bit UART interface opens up more tuning and control options. Industries’ most advanced low voltage motor driver family upgrades designs to efficient and reliable operation for cost-effective and highly competitive solutions. Place near IC with Optional external short path to die pad capacitor T 100n 1n-100n OU 10V P 8V C 1. V
+VM
VS TMC7300 A2 Or low ESR 100µF 100n 1.8V Voltage Internal charge 10µ electrolytic / depending A1 on supply resistance regulator STANDBY pump and motor current OA1
M
Full Bridge A OA2 AD0 UART Address AD1 BRA RSA Configuration Configuration DC motor PWM (GND or VIO) ENUART Interface BRA Connect directly MODE B. Dwersteg, © to GND plane BRB TRINAMIC 2016 Current UART interface UART UART interface regulator Use low inductivity SMD + Register Block type for RSA and RSB DIAG Programmable OB1 Driver error Diagnostic
M
Output Full Bridge B OB2 VIO/ 1.8V to 5V NSTDBY I/O voltage Standby STANDBY detector / standby 100n BRB RSB 500k CLK oscillator Connect directly to GND plane EN D AD N G PEID driver enable (disable prior to configuration!)
Figure 1.1 TMC7300 basic application block diagram for two DC motors MODES OF OPERATION: OPTION 1: DC-Motor Driver with Full Diagnostics and Control
This mode allows operation of two DC motors, or a single motor with double current.
UART
Options (label UART): + Full control over motor velocity and direction by setting PWM voltage for each motor + Control motor torque limit for both motors, by setting a common current limit + Use current limit to safely avoid battery overload during acceleration or when motor is blocked + Detailed diagnostics and thermal management + Passive braking and freewheeling for flexible, lowest power stop modes www.trinamic.com