SA310KR Apex Microtechnology

SA310 RoHS Brushless DC Motor Driver COMPLIANT FEATURES 30 A Continuous Output Current per Phase, 80 A Peak Up to 400 kHz Switching Frequency Up to 650 V Supply Voltage Internal Bootstrap Operation Undervoltage Lockout Active Miller Clamping Magnetic (Transformer) Isolation APPLICATIONS Motor Control Variable Frequency Drives DC/AC converters Power Inverters Test Equipment MRI Main Coil Supply DESCRIPTION The SA310 is a fully integrated three-phase driver designed primarily to drive Brushless DC (BLDC) and Permanent Magnet Synchronous (PMSM) motors or DC/AC converters. The module uses Silicon Carbide MOSFET technology to improve efficiency over other devices in its class. Three independent half-bridges pro- vide up to 80A peak output current under direct microcontroller or DSC control. SA310 is built on a thermally conductive, but electrically isolated substrate to provide the most versatility and ease in heatsinking. The amplifier protection features include Under-voltage lockout (UVLO) function and active Miller clamp- ing to reduce switching noise and improve reliability. Also included in the module are Silicon Carbide Schottky Barrier free-wheeling diodes to protect the body diode of each MOSFET. No external output protection diodes are required. The SA310 s integrated gate drivers provide transformer isolation between the inputs and high-voltage outputs. Apex Microtechnology Inc. Oct 2021 www.apexanalog.com All rights reserved SA310U Rev CSA310 Figure 1: Equivalent Schematic +VS U +VS VW 3 6 V 9 CC 2 OUT U DGND 16 5 OUT V Gate Gate Gate 7 OUT W Driver Driver Driver INU LS 15 INU HS 14 INV LS 13 INV HS 12 11 INW LS INW HS 10 1 4 8 PGND U PGND V PGND W Figure 2: Typical Connection V V CC S 100 nF 100 nF * Recommended input 1N4148 diodes and *Use 10 F per Amp of output current 9 3 6 14 INU HS 2 15 INU LS OUT U 12 INV HS 5 OUT V 13 INV LS SA310 7 10 OUT W INW HS 11 INW LS 16 1 4 8 Single Point Ground DGND PGND 2 SA310U Rev C Microcontroller Inputs Outputs DGND V CC PGND U +V U S PGND V +V VW S PGND W