SA306AHR Apex Microtechnology

SA306A RoHS 3 Phase Switching Amplifier COMPLIANT FEATURES Low Cost 3 Phase Intelligent Switching Amplifier Directly Connects to Most Embedded Micro- controllers and Digital Signal Controllers Integrated Gate Driver Logic with Dead-time Generation and Shoot-through Prevention Wide Power Supply Range (8.5V to 60V) Over 15A Peak Output Current per Phase Independent Current Sensing for Each Output User Programmable Cycle-by-Cycle Current Limit Protection Over-Current and Over-Temperature Warning Signals APPLICATIONS 3 Phase Brushless DC Motors Multiple DC Brush Motors 3 independent Solenoid Actuators DESCRIPTION The SA306A is a fully integrated switching amplifier designed primarily to drive three-phase Brushless DC (BLDC) motors. Three independent half bridges provide over 15 amperes peak output current under micro- controller or DSC control. Thermal and short circuit monitoring is provided, which generates fault signals for the microcontroller to take appropriate action. Additionally, cycle-by-cycle current limit offers user programmable hardware protection independent of the microcontroller. Output current is measured using an innovative low loss technique. The SA306A is built using a multi-technology process allowing CMOS logic control and complementary DMOS output power devices on the same IC. Use of P-channel high side FETs enables 60V operation without bootstrap or charge pump circuitry. The HSOP surface mount package balances excellent thermal performance with the advantages of a low profile surface mount package. Apex Microtechnology Inc. Mar 2019 www.apexanalog.com All rights reserved SA306U Rev ISA306A TYPICAL CONNECTION Figure 1: Typical Connection V + V DD S 100nF 1F 100F V S V V A V B/C DD S S CL/DIS 1 DIS 2 Fault OUT A SC W TEMP I A Current monitor I B signals I C V S GND SA306 Ab OUT B LOAD At Bt PWM Bb Signals Ct Cb V S Microcontroller or DSC OUT C HS SGND PGND A/B PGND C GND 2 SA306U Rev I