BridgeSwitch Family High-Voltage, Self-Powered, Half-bridge Motor Driver with Integrated Device Protection and System Monitoring HV+ Product Highlights HD Highest Performance and Design Flexibility Fully integrated half-bridge stage with up to 99.2% efficiency HS Eliminates external heat sink at rated continuous RMS current V DD BPH Drive 600 V N-channel power FREDFETs XH Ultra-soft, fast recovery diode Accurate instantaneous phase current information output (BRD126X) HB SM FAULT Eliminates external sensing and amplification circuitry /INH LS System Self-biased low-side and high-side drivers Drive INL MCU & IPH Eliminates need for auxiliary power supply Control BPL BridgeSwitch Small footprint surface mount InSOP-24C package Exposed pads enable heat sinking through PCB SG XL ID LS Controlled FREDFET switching speed reduces EMI Enhanced Safety and Reliability Features Adustable cycle-by-cycle current limit for both FREDFETs HV- Fail-safe operation PI-8314-100518 Internal dual level thermal overload protection Figure 1. Typical 3-Phase Inverter Schematic (BRD126X). Self-configuring system level monitoring input Four level DC bus undervoltage DC bus overvoltage System temperature Adaptive dead time Simultaneous conduction lockout protection Status Interface Bi-directional bussed open Drain single wire interface Figure 2. InSOP-24C Package (Top and Bottom Sides). Reports status updates to system MCU Successful power-up Internal over-current or temperature faults Product Family System level faults FREDFET DC Continuous Phase 3 Includes device identification Product 2 1 RMS Current Output Current Status query through system MCU Device fault reset through system MCU BRD1160C / 1.0 A 0.22 A BRD1260C Applications BRD1161C / 1- or 3-phase high-voltage PM and BLDC motor drives 1.7 A 0.50 A BRD1261C Up to 400 W typical inverter output power Appliances including dish washers and refrigerators BRD1163C / 3.0 A 0.75 A Condenser fans in high efficiency air conditioners BRD1263C BRD1165C / Description 5.5 A 1.00 A BRD1265C The BridgeSwitch family of integrated half-bridges dramatically BRD1167C / 11.5 A 1.33 A simplifies the development and production of high-voltage inverter BRD1267C driven 1- or 3-phase PM or BLDC motor drives. It incorporates two Table 1. Product Family. high-voltage N-channel power FREDFETs with low and high-side drivers Notes: in a single small-outline package. The internal power FREDFETs offer 1. Continuous DC output current per FREDFET, calculated at 25 C case and 125 C junction temperature. Normally limited by internal circuitry ultra-soft and ultrafast diodes ideally suited for hard switched inverter 2. Continuous phase RMS current, internal self-supply, 340 V bus, trapezoidal drives. Both drivers are self-supplied eliminating the need for an commutation with 12 kHz high-side PWM, PCB heat sinking with 50 C case external auxiliary power supply. BridgeSwitch provides a unique temperature rise. 3. Package: InSOP-24C. instantaneous phase current output signal simplifying implementation of sensor-less control schemes. The low-prolfi e, compact footprint surface cycle current limit for both FREDFETs and two level thermal overload mount package offers extended creepage distances and allows heat protection. External system level monitoring includes DC bus sensing sinking of both power FREDFETs through the printed circuit board. with four undervoltage levels and one overvoltage level as well as BridgeSwitch offers internal fault protection functions and external driving external sensors such as an NTC. The bi-directional bussed system level monitoring. Internal fault protection includes cycle-by- single wire status interface reports observed status changes. www.power.com June 2020 This Product is Covered by Patents and/or Pending Patent Applications.BridgeSwitch BPH HD REGULATOR 14.5 V DIGITAL ANALOG BUILDING BLOCK: PROCESS FOR HS SYSTEM VOLTAGE SUPPLY, REFERENCE VOLTAGE, TESTING AND COMMUNICATION REFERENCE CURRENT, CLK TRIM XH CURRENT LIMIT PROGRAM SenseFET Power FREDFET GATE LOGIC CURRENT DRIVER LIMIT I SNS HS RECEIVER HB BPL INH ANALOG BUILDING BLOCK: INH/INL VOLTAGE SUPPLY, REFERENCE VOLTAGE, INL CONTROL REFERENCE CURRENT, CLK ID CHIP CONFIGURATION FAULT DIGITAL COMMUNICATION FAULT LOGIC LINE AND SM TEMPERATURE MONITOR SenseFET XL CURRENT LIMIT Power PROGRAM GATE LOGIC FREDFET CURRENT DRIVER LIMIT I SNS SG LS PI-8296a-120117 Figure 3. Functional Block Diagram BRD116X. 2 Rev. J 06/20 www.power.com