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The RT7084C2M is an application-specific IC designed for PMSM/BLDC motor applications. This two-in-one ASIC integrates several functional circuits, including a 3-phase motor controller, a 3-phase gate driver, three bootstrap diodes, a 5V LDO, and a buck converter.<br />The RT7084C2M embeds the ARM 32-bit Cortex-M0 core with peripheral circuits to perform sensorless Field Oriented Control (FOC). In addition, this ASIC provides several system-level peripheral functions, including filters at the ADC input, a communication interface, a thermal sensor, short circuit protection (SCP) and locked-rotor protection, to reduce component count, PCB size and system cost.<br />Moreover, the RT7084C2M drives external N-Channel MOSFETs in a three half-bridge configuration with built-in bootstrap circuitry.<br />The RT708<span>4C</span>2M is available in a VQFN-32L 4x4 package. The recommended junction temperature range is -40°C to 125°C, and the ambient temperature range is -40°C to 105°C.
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RT7084C2M Typical Circuit
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<div class="spec-list"><ul class="lv1"><li>Integrates 3-Phase PMSM/BLDC Controller, Gate Driver, Bootstrap Diodes, 5V LDO, and Gate Driver LDO </li><li>Input Voltage Range: 16V to 80V </li><li>Sensorless, Sine-Wave Field Oriented Control (FOC) </li><li>Integrates Filters at ADC Input </li><li>Protections: SCP, UVLO, Locked-Rotor, and Thermal Detection </li><li>PMSM/BLDC Motor Controller- ARM 32-bit Cortex-M0 CPU, Frequency up to 60MHz- Memories Size: 16kB MTP, Internal ROM with Embedded Motor Control Library and 4kB SRAM- Power Management: Deep Sleep- Communication Interface: I<sup>2</sup>C and UART- Configurable ADC Gain: x1, x4, and x8- 5-Channel 12-Bit ADC- AD0 to AD3 for Differential Mode Current Sense- AD6 to AD8 for System Application - 1-Channel Voltage Type 8-bit DAC </li><li>Gate Driver- Floating Channel Designed for Bootstrap Operation- Sourcing/Sinking Current: 100mA/200mA- Built-In UVLO Functions for All Channels- Matched Propagation Delays for All Channels </li><li>VQFN-32L 4x4 Package </li></ul></div>
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RT7084C2M Ordering Information
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<div class="spec-list"><ul class="lv1"><li>Server Fan </li><li>Telecom Fan </li><li>Liquid Pump </li></ul></div>
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