Preliminary PT2433 3-Phase Sensorless BLDC Motor Controller DESCRIPTION FEATURES The PT2433 is a three-phase, sensor-less, brushless DC motor control chip. System operating voltage depends on the VM (motor voltage), from 12V to 400Vdc. On-chip LDO can provide 5V voltage for logic and analog circuits operation. The three-phase sensor-less control is based on trapezoid wave, and additional soft-switching scheme is design for reducing electrical audible noise when motor phase commutation. Combine with an external high voltage gate driver and six n-channel MOSFETs, PT2433 can operates high voltage motor up to 400V. On the 12V ~ 36V operation, it is easy to setup with simple level-shift circuit and combined with external PN MOSFETs. The PT2433 offers external parameters setting for optimum adjustment with different motors or applications. The package of PT2433 is SSOP28. Sensor-less control for 3-phase BLDC Current limit function Over temperature protection from external NTC Motor lock protection Reverse function. PWM or DC input for speed control FG output for rotation speed RD output for look detection APPLICATIONS Three-phase BLDC motor 3-phase BLDC fan, blower BLOCK DIAGRAM V5V V15V OSC_C +5V LDO OSC1 OSC2 PWM Gen. VDD SGND RD FG FWR DC SW0 SW1 FLT COMI UH UL VH VL WH WL Sensorless Cotroller ZCD CT OCP ZCW ZCV ZCU CT CSOFT RF OTP RSEN Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan PT2433 ORDER INFORMATION Valid Part Number Package Type Top Code PT2433-X 28 Pins, SSOP PT2433-X PIN CONFIGURATION FG 28 RD 27 SW1 DC 26 4 FWR OSC_C U1 25 5 WL FLT 24 6 VL COMI 23 TEST2 22 1 CT 2 SW0 3 X1 PTC Gate Driver PT2433 7 UL 8 WH ZCW 21 9 VH ZCV 20 10 UH ZCU 19 11 SGND CSOFT 18 12 V15V RF 17 13 V5V RSEN 16 14 TEST0 TEST1 15 V5V +15V PRE1.0 2 May 2014 PT2433 PIN DESCRIPTION PRE1.0 Pin Name I/O/P Description CT O SW0 SW1 FWR I I I Connect to external capacitor for setting lock & lease time Parameter 0, floating for HIGH Parameter 1, floating for HIGH Forward & reverse rotation setting, floating for HIGH WL VL UL WH VH UH SGND O O O O O O P W phase low side signal output V phase low side signal output U phase low side signal output W phase high side signal output V phase high side signal output U phase high side signal output Signal ground 5 6 7 8 9 10 11 V15V V5V TEST0 TEST1 P O I O 12 13 14 15 RSEN O RF CSOFT I O +15V supply input +5V LDO output Test pin 0, connect to ground for normal operation Test pin,1 floating for normal operation Connect to external resistors for over temperature sensing Current limit voltage sensing Connect to external capacitor for soft-start slop setting ZCU ZCV ZCW TEST2 COMI FLT I I I I O I U phase zero crossing input V phase zero crossing input W phase zero crossing input Test pin 2, connect to ground for normal operation Motor virtual neutral voltage Zero crossing filter 19 20 21 22 23 24 OSC_C RD DC FG I O I O Connect to external capacitor for startup step setting Motor lock indicator PWM or DC input for speed control Motor rotation speed indicator 25 26 27 28 3 Pin No. 1 2 3 4 16 17 18 May 2014 PT2433 IMPORTANT NOTICE Princeton Technology Corporation (PTC) reserves the right to make corrections, modifications, enhancements, improvements, and other changes to its products and to discontinue any product without notice at any time. PTC cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a PTC product. No circuit patent licenses are implied. Princeton Technology Corp. 2F, 233-1, Baociao Road, Sindian Dist, New Taipei City 23145, Taiwan Tel: 886-2-66296288 Fax: 886-2-29174598 http://www.princeton.com.tw PRE1.0 10 May 2014