Page 38 - PEN eBook July 2022

MOTOR CONTROL Motor Control

refrigerators, and heating, ventilation, and air conditioning (HVAC) systems. Designs are also
1,2
required to comply with IEC 60335-1 and IEC 60730-1 safety requirements.

At the same time, consumers and manufacturers alike are demanding higher levels of reliability
— less field service and fewer returns. According to a recent industry study, misdiagnosis results
in 30% of compressor returns having ‘no fault found, adding to costs and inefficiencies across
’3
the supply chain and resulting in unhappy consumers. Harnessing the IoT can enable remote
monitoring of consumer appliances, but the design must support meaningful and cost-effective
fault diagnostics and protection functions.

To address these challenges, designers can turn to Power Integrations’ family of BridgeSwitch,
high-voltage, self-powered, half-bridge motor driver ICs with integrated protection, system

monitoring, and reporting that deliver higher efficiency, increased design flexibility, and enhanced
inverter and system reliability (Figure 1).

Motor Drive ICs Use

Built-In System Fault

Diagnosis to Reduce

Field Returns

BridgeSwitch combines high efficiency, design

flexibility, enhanced safety, IEC 60335-1, and

IEC 60730-1 compliance, with fault diagnosis. Figure 1: BridgeSwitch combines high efficiency with extensive fault monitoring and reporting (blue text) for increased
system and inverter reliability

By Cristian Ionescu-Catrina, senior product marketing manager at Power
Integrations HIGH EFFICIENCY SIMPLIFIES THERMAL MANAGEMENT

BridgeSwitch integrated half-bridges simplify the development and production of high-voltage,
Designers are increasingly challenged by demands for continuous improvements in the efficiency inverter-driven, single- or three-phase permanent magnet or brushless DC motor drives. BridgeSwitch
and reliability of motor drives in consumer appliances. From the European Union to China, higher ICs include a proprietary instantaneous phase current output signal that facilitates the design
efficiencies are required for a growing range of consumer appliances, including dishwashers, of sensor-less control schemes. These ICs include two 600-V, N-channel power FREDFETs, with

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