Power Integrations Launches BridgeSwitch-2 BLDC IC to Enhance Performance Levels in Motor Drive Applications
Latest update time：2024-06-11
Reads：
BLDC motor inverter sleep mode power consumption reduced to less than 10mW, output power extended to 1HP applications
PCIM Europe, Nuremberg, Germany, June 11, 2024 –
Power Integrations
(Nasdaq:
POWI
), the leader in high-voltage integrated circuits for energy-efficient power conversion, today announced the introduction of its
BridgeSwitch™-2
family of high-voltage integrated half-bridge (IHB) motor-driver ICs
, further enhancing its combined hardware and software solutions for brushless DC motors (BLDC) up to 1 HP (746 W).
The new IC integrates the drivers of the upper and lower tubes and two performance-enhanced FREDFETs, and uses lossless current detection to provide up to 99% inverter efficiency. The IHB architecture eliminates concentrated heat points in the system, improves design flexibility and reliability, and can significantly reduce the number of components and save PCB area. BridgeSwitch-2 is supported by Power Integrations'
MotorXpert™
software suite, which includes single-phase trapezoidal control and three-phase sensorless field-oriented control (FOC) modules to speed up inverter development.
BridgeSwitch-2
uses hardware to handle operational anomalies, allowing the use of
Class A software safety in IEC 60730
, which can reduce product certification time by months. The brushless DC inverter can be set to enter sleep mode when not in operation, reducing the driver power consumption to less than 10mW; this means that within the specified standby power consumption limit, more power is available for circuit loads that implement network access and monitoring functions.
Comments Cristian Ionescu-Catrina, product marketing manager at Power Integrations:
“BridgeSwitch-2-based motor drives feature very low standby power consumption, enabling designers to meet the new EU ERP regulations. BridgeSwitch-2 ICs are also much more efficient than IGBT-based IPM modules across the entire load range.” He continues: “From start-up to performance optimization, the MotorXpert GUI-based tool ‘Terminal Emulator’ and MISRA C-compliant code library greatly simplifies the design process, optimizing the motor operating architecture in real time without the need for repeated firmware updates. BridgeSwitch-2 works with any microprocessor, making it easy to adopt in existing systems – an important consideration for engineers updating designs to meet stricter standby regulations.”
The BridgeSwitch-2
ICs are available in a power range of 30W to 746W (1HP) for a wide range of applications, including heat exchanger fans, refrigerator compressors, fluid circulation pumps, gas boiler combustion fans, washing machine drums, and kitchen mixers and blenders. Compared to discrete designs, the IHB architecture eliminates the need for current sense resistors and associated signal conditioning circuitry, reducing component count by 50% and PCB space by 30%. In addition, sense resistor losses are eliminated, further improving efficiency. Accurate motor control is achieved through built-in real-time reporting of phase current (IPH) information. Through precise control of the gate switch drive signal and the use of a body diode with soft recovery characteristics, its typical EMI characteristics are 10dB lower than existing drivers, so a smaller EMI filter can be selected.
BridgeSwitch-2
ICs feature built-in DC overvoltage protection and current limiting to protect the inverter and system without relying on system software. Error flags or comprehensive fault bus reporting can be selected to meet a variety of system requirements. Now, with high-precision built-in IPH information and comprehensive reporting provided through the fault bus, the use requirements of emerging applications such as fault prediction can be realized. The BridgeSwitch-2 motor drive uses built-in hardware-based low- and high-current protection for the lower and upper tubes, which meets IEC 60335-1 Class A requirements. In addition, BridgeSwitch-2 can operate without an auxiliary power supply, further reducing PCB area and reducing component count.
Related Reading
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