®
RT7075
3 Phase PMSM/BLDC Motor Controller with Gate Driver
General Description
The RT7075 is a two-in-one application specific IC which
consists of a 3-phase motor controller and a gate driver
designed for PMSM/BLDC motor applications.
The RT7075 integrates the ARM 32-bit Cortex-M0 core
with peripheral circuits to perform field oriented control
(FOC) and sensorless motor control. In additions, system
level peripheral functions, such as ADC, DAC,
communication interface, SVPWM, watchdog timer,
current sensing, undervoltage-lockout (UVLO), short
circuit protection(SCP) and locked-rotor protection are
integrated so as to reduce component count, PCB size
and system cost.
Furthermore, the RT7075 drives external N-Channel
MOSFETs in three half-bridge configuration with an
external bootstrap network up to 600V.
A dead time control is built-in to prevents shoot-through
of the external N-Channel MOSFETs.
The RT7075 is available in LQFP-48L 7x7 package.
Features
Integrated 3 Phase PMSM/BLDC Controller with
Gate Driver
Sensorless, Sinewave Field Oriented Control (FOC)
Protections : SCP, UVLO and Locked-Rotor
Protection
PMSM/BLDC Motor Controller :
ARM 32-Bit Cortex-M0 CPU, Up to 60MHz
�½
Memories Size : 16KB MTP, Internal ROM with
�½
Embedded Motor Control Library and 4KB SRAM
�½
�½
�½
Power Management : Normal or Deep Sleep
Programming Soft-Start
Communication Interface : I
2
C and UART
�½
10-Channel 10-Bit ADC
1-Channel Current Type 6-Bit DAC
�½
1-Channel Voltage Type 8-Bit DAC
Gate Driver :
�½
Floating Channel Designed for Bootstrap
Operation up to 600V
�½
Sourcing/Sinking Current :
RT7075A : 290mA/600mA
RT7075B : 17mA/600mA
RT7075C : 12mA/600mA
�½
Matched Propagation Delays for All Channels
�½
V
V15V
and V
VBU/V/W
Supply Range : 13V to 20V
RT7075xGPL with Firmware Code UXYYY Certified
by UL for IEC-60730-1 Class B Compliance with
Recognized Marking :
�½
Ordering Information
RT7075
-
Programmed Firmware Code
Package Type
PL : LQFP-48L 7x7 (L-Type)
Lead Plating System
G : Green
(Halogen Free and Pb Free)
RT7075 Version
(Refer to Version Table)
UL Certified No. E478780 (UL60730)
Applications
Note :
Richtek products are :
�½
RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
�½
PMSM/BLDC Motor
Pedestal Fan
Ceiling Fan
Air Conditioner Indoor/Outdoor Fan
Pump
RT7075 Version Table
Version
Sourcing Current
RT7075A
290mA
RT7075B
17mA
RT7075C
12mA
Copyright
©
2018 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS7075-04
November 2018
www.richtek.com
1
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
