AN44142A-EVB-0

Doc No. TA4-EA-06255 Revision. 2 Product Standards AN44142A Driver IC for 3-phase Brushless Motor FEATURES Supply voltage range: 4.5 V ~ 26.4 V Built-in 5-V regulator 3-phase full-wave sine-wave PWM drive by 1-Hall-sensor Selectable Input Mode: Either linear voltage input or PWM input through VSP pin Controllable lower limit for linear voltage input mode through VSPL pin Conduction angle auto driver phase shift correction Rotation direction selectable (Forward/Reverse) FG pulse divide selectable Sleep mode Various protection functions: Under Voltage Lock Out (UVLO), Over Voltage Lock Out (OVLO), Thermal protection, Over Load Protection, and Over Current Protection DESCRIPTION AN44142A is a driver IC for 3-phase brushless motor optimized for fan motors. By employing the rotor position detector and sine wave PWM drive by 1-Hall-sensor, this IC achieves component reduction and miniaturization of motor set as well as motor drive at low noise, low vibration and low power consumption. APPLICATIONS Driver IC for 3-phase brushless fan motor TYPICAL APPLICATION AN44142A 3-phase full-wave sine-wave PWM drive C FGSEL C C BC SST VU C TRI TRI 19 12 BC2 VV H1H U 20 11 C ( ) H H1L 10 V 21 VW R R VH1 FR RCS RCS 22 9 VSPL W 23 8 C VSP 7 VCC VCC1 24 IU IV IW C VSP ( ) C VCC C VPUMP R R RD FG 2ms/div time s C VREG Condition: V = 12 V, V = 0 V, V = PWM mode (60kHz,Duty60%) CC FR VSP Notes: The application circuit is an example. The operation of the mass production set is not guaranteed. Sufficient evaluation and verification is required in the design of the mass production set. The Customer is fully responsible for the incorporation of the above illustrated application circuit in the design of the equipment. Page 1 of 48 Established : 2014-05-14 Revised : 2014-07-08 RD 1 18 SST FG 2 FGSEL 17 SLEEP 3 PS 16 VREG 4 15 RDS GND 5 OVS 14 VPUMP 6 13 BC1Doc No. TA4-EA-06255 Revision. 2 Product Standards AN44142A CONTENTS FEATURES ................................................................................................................ 1 DESCRIPTION ........................................................................................................... 1 APPLICATIONS ......................................................................................................... 1 TYPICAL APPLICATION ........................................................................................... 1 TYPICAL CHARACTERISTICS ................................................................................. 1 CONTENTS ................................................................................................................ 2 ABSOLUTE MAXIMUM RATINGS ............................................................................ 3 POWER DISSIPATION RATING ............................................................................... 3 RECOMMENDED OPERATING CONDITIONS ........................................................ 4 ELECTRICAL CHARACTERISTICS ......................................................................... 5 PIN FUNCTIONS ........................................................................................................ 9 PIN CONFIGURATION .............................................................................................. 9 FUNCTIONAL BLOCK DIAGRAM ............................................................................ 10 OPERATION .............................................................................................................. 11 AREA OF SAFE OPERATION .................................................................................. 33 PIN EQUIVALENT CIRCUIT ....................................................................................... 34 PACKAGE INFORMATION ........................................................................................ 41 IMPORTANT NOTICE ................................................................................................ 44 USAGE PRECAUTIONS ............................................................................................ 46 Page 2 of 48 Established : 2014-05-14 Revised : 2014-07-08