ZXBM1015EV1 ZXBM1015EV1 USER GUIDE DESCRIPTION The ZXBM1015EV1 is a demonstration board for evaluating the ZXBM1015 Single Phase Brushless DC Motor Controller. PWM input control, thermistor input control or voltage input control can be selected simply by inserting a jumper. The Hall sensor can be either a four pin naked Hall sensor or a three pin digital (buffered) Hall sensor. FEATURES • Compliant with external PWM speed control • Compliant with thermistor control • Minimum speed setting • Low noise • Auto restart • Built in Hall amplifier • Speed pulse (FG) and Lock Rotor (RD) output options • Closed Loop Current control and Threshold Current Control • Variable Commutation Delay • Up to 18V input voltage (60V with external regulator) APPLICATIONS • Mainframe and personal computer blowers and fans • Instrumentation fans • Central heating blowers • Automotive climate control ORDERING INFORMATION TYPICAL APPLICATION CIRCUIT Vcc ThRef ORDER NUMBER ZXBM1015EV1 Please note evaluation boards are subject to availability and qualified leads. CPWM VSPD Ph2 Hi Phase Drive PWM Osc Vcc Ph1 Hi Vref SPD Control Voltage Vcc Ph1 Lo SMIN Set Min Speed Phase Drive & Control ComDel Vcc Ph2 Lo ThRef Locked Rotor Detect CLCK Sense Current Monitor H-Bias Hall Bias Vcc Speed & Lock Detect H+ Hall Hall Amp H- Gnd ZXBM1015EV1 ISSUE 1 - October 2005 1 Set Limit FG or RD ZXBM1015EV1 Q14 G4PR S2S3N D3D4R G2NL S1S4P G1PL D1D2L NC VIN D5 1 A K 30BQ100 1 J5 2 12V_SELECT D13 SP 10k GP R24 CONNECTOR 1 R34 200R SP DP1 GP DP2 33k 19 1uF 5 ThRef Ph1Hi SPD Sense Smin SetTh 47k 16 2k 8 R31 D10 ZXM61P02F R40 9 NC NC D R12 R8 470R R10 C2 28k 100pF ComDel FG Cpwm RD 1 13 G D15 FG_OUT 12 D4 D3 NC NC BZX284-C16 C3 10 Clck ZXBM1015 GND K + - R 28 A 2 1 K BZX284-C16 11 RD 0.47uF 1 SENSE R14 4.7k R39 D S G D16 A 0.2R 1 1 Q4 1 NC PWM_IN ZXM61N02F R 45 B G4 Q3 4.7k G K 3 0 B Q1 0 0 A G3 A NC NC 0.2R ISSUE 1 - October 2005 Q10 K 14 ZXBM1015EV1 C4A S 15 1 R9 18k 7 K 390R K R7 NC R2 17 A 10k 1 18 NC 6 R11 W2 1 1 Ph2Lo 10uF 160V G G2 W1 NC 390R C6 Q8 NC D A NC R30 4.7k FMMT493 ZXMP10A18G D Ph1Lo H- MOTOR ZX MN 1 0 A 0 9 K Hbias Q2 S S R15 4 K 33k R1 25V C4 1k C5 NC R45 R28 R 44 R 27 A 1 20 D1 K 1uF 1k D9 ZX MN 1 0 A 0 9 K Ph2Hi ZXMP10A18G D A V+OP H+ D2 MOTOR D Vcc Q1 G1 R0 2 1 S S U1 4.7k A 1 R29 R38 R17 R6 10k R0 G NC 3 Q9 NC R0 R33 R32 R 46 NC 2 R13 D8 DP2 R25 FMMT493 C1 1k DN2 DP1 10k Q6 200R G DP 10k R44A D14 PWM SELECT R16 DP GP FMMT593 R27 4 5 3 2 2 H+ Pull Up H A L L G R OU N D 33k 8.2k 1 10k NC A J3 R3 R26 10k 10k R36 R43 R4 K R42 1 SP NC Q5 J2 1 2 H- H- BIAS H+ K 33k DIGITAL HALL SUPPLY J1 BZX284-C16 SPD/THERM_IN GND GN DN DN2 Q7 33k A 2 1 R35 56k D6 SUPPLY 1 DP R37 HALL 1 THERM_SELECT 1 V _CONTROL DP GP DN1 FMMT593 R41 N A K E D H A L L B IA S J4 2 DN SP GN NC 6k SUPPLY GN SN DN DN1 A R5 D12 BZX284-C16 Q13 SN DN A D7 SN K SN GN A FZT653 K 620R 1 Q12 BZX284-C16 A R20 620R Q11 2 R19 620R VS D11 1 R18 K LL4148 RSENSE1 620R RSENSE2 620R 3 0 B Q1 0 0 620R A K R23 A R22 K R21 NC Schematic Diagram For other reference designs or further applications information please refer to the ZXBM1015 datasheet. ZXBM1015EV1 is configured to the reference design below. REFERENCE DESIGN G3NR ZDB261 Diagram Showing Full PCB Layout ZXBM1015EV1 Bill of Materials Quantity Identification Value Description 390R SMD 0805 1% generic 10K SMD 0805 1% generic 1 1 1 1 2 2 1 3 1 6 1 2 5 1 1 2 R1,R2 R3R6,R11,R25,R26,R42 R7 R8 R9 R10 R13,R14 R27,R28 R15 R16,R17,R38 R33 R10-R23 R24 R29,R34 R32,R35-R37,R46 R41 R43 R44,R45 18K 470R 2K 27K 4.7K 4.7K 47K 1K 0R 620R 6K2 200R 33K 56K 8.2K 0R 2 RSENSE1,RSENSE2 0R2 1 1 1 1 C1 C2 C3 C4 1µF 100pF 0.47µF 1µF 1 C6 10µF 1 2 2 2 2 1 1 1 3 5 1 U1 Q1,Q2 Q3,Q4 Q5,Q7 Q6,Q8 Q9 Q10 Q11 D1,D2,D5 D6,D11,D12,D15,D16 D13 ZXBM1015TS20 ZXMP1018G ZXMN10A09K FMMT593 FMMT493 ZXM61N02F ZXM61P02F FZT653 30BQ100 BZX284C16 LL4148 SMD 0805 1% generic SMD 0805 1% generic SMD 0805 1% generic SMD 0805 1% generic SMD 0805 1% generic SMD 1206 1% generic SMD 0805 1% generic SMD 0805 1% generic SMD 1206 1% generic SMD 1210 1% generic SMD 1206 1% generic SMD 0805 1% generic SMD 0805 1% generic SMD 0805 1% generic SMD 0805 1% generic SMD 0805 1% generic 1206 5% Welwyn LR120602J 25V 1206 X7R 50V 0805 COG 16V 0805 X7R 16V 0805 X7R 160V Electrolytic 10Dia 5Pitch Motor Controller SOT223 P MOSFET DPAK N MOSFET SOT23 PNP Bipolar SOT23 NPN Bipolar SOT23 N MOSFET SOT23 P MOSFET SOT223 NPN Bipolar SMC Diode, 3A 100V SOD110 16V Zener Diode MINIMELF Diode 2 8 ZXBM1015EV1 ISSUE 1 - October 2005 3 Suggested Source Farnell 774-6148 Farnell 471-6620 RS 211-3108 Farnell 422-7116 RS 451-5770 Rs 365-4565 Zetex Semiconductors Zetex Semiconductors Zetex Semiconductors Zetex Semiconductors Zetex Semiconductors Zetex Semiconductors Zetex Semiconductors Zetex Semiconductors RS 254-0695 Farnell 935-700 Farnell 739-182 ZXBM1015EV1 PERFORMANCE Test Point Waveforms Trace 1 above is G3 and trace 2 is G2. These are the gate drives to MOSFETs Q3 and Q2. Motor is running at full speed. Trace 1 above is G3 and trace 2 is G2. These are the gate drives to MOSFETs Q3 and Q2. Input to the PWM_IN pin is 50%. Trace 1 above is G3 and trace 2 is G2. These are the gate drives to MOSFETs Q3 and Q2. Input to the PWM_IN pin is 50%. Time base has been expanded to show the PWM switching waveform. Trace 1 above is G1 showing the voltage on the gate of transistor 1 and trace 2 is voltage on motor winding W1. Motor is running at full speed. ZXBM1015EV1 ISSUE 1 - October 2005 4 ZXBM1015EV1 Trace 1 above is G1 showing the voltage on the gate of transistor 1 and trace 2 is voltage on motor winding W1. Motor is running at 50% PWM_IN input. Trace 1 above is G1 showing the voltage on the gate of transistor 1 and trace 2 is voltage on motor winding W1. Motor is running at 50% PWM input. Time base has been expanded to show PWM switching. Trace 1 is MOSFET gate G3 and Trace 2 is MOSFET gate G4. Motor is running at 50% PWM_IN input. Trace 1 is MOSFET gate G3 and Trace 2 is MOSFET gate G4. Motor is running at full speed. ZXBM1015EV1 ISSUE 1 - October 2005 5 ZXBM1015EV1 Trace 1 is MOSFET gate G3 and Trace 2 is MOSFET gate G4. Motor is running at full speed. Time base has been expanded to show commutation delay. ZXBM1015EV1 ISSUE 1 - October 2005 6 ZXBM1015EV1 ZXBM1015EV1 OPERATION Specification Input voltage (Vcc) Input voltage (Vcc) with modification Maximum Current PWM output frequency PWM output duty cycle PWM input frequency PWM input voltage PWM input duty cycle Thermistor Input SPD input voltage 48V (Min 24V, Max 70V) 12V (Min 6V, Max 18V) 3A 200Hz to 100kHz (25kHz nominal) 0% to 100% 200Hz to 100kHz (25kHz nominal) 3V to 5V 0% to 100% 10kΩ NTC, 100KΩ NTC 1V to 3V Terminals VIN GND W1 W2 H+ HHall Bias Hall Vcc FG out PWM_IN G1- G4 +Supply input voltage Supply 0V Motor coil connection Motor coil connection Hall sensor positive input Hall sensor negative input (four pin naked Hall only) Hall sensor supply (four pin naked Hall only) Hall sensor supply (three pin digital Hall only) Motor speed output signal External PWM control input MOSFET gate drive terminals (or Bipolar Transistor base drive terminals) Jumpers J1 (H-BIAS) - Select when using 3 pin Hall Sensor. Connects R35, R36 potential divider to H- pin. J2 (H+ Pull Up) - Select when using 3 pin Hall Sensor with open collector (or drain) output. J3 (PWM SELECT) – Selects external PWM input control option. J4 (THERM_SELECT) – Selects 10K thermistor linearization resistor network. Leave open for 100K thermistor. J5 (12V_SELECT) – Selects low voltage (12V to 18V) input option. Other modifications required as described later. ZXBM1015EV1 ISSUE 1 - October 2005 7 ZXBM1015EV1 Terminals and Jumpers Positions Figure 1 below shows the positions on the PCB of the terminals and jumpers described above. Figure 1 ZXBM1015EV1 ISSUE 1 - October 2005 8 ZXBM1015EV1 Voltage Control For voltage control, connections to the PCB are illustrated in Figure 2 below. A digital (buffered) Hall Sensor with open collector output is used in this example. Figure 2 The control voltage is varied from 3V (0% PWM) to 1V (100% PWM). The ZXBM1015 has a linear voltage to PWM response. The speed response varies for different motor designs. ZXBM1015EV1 ISSUE 1 - October 2005 9 ZXBM1015EV1 The circuit for the above configuration is Figure 3 below. Figure 3 ZXBM1015EV1 ISSUE 1 - October 2005 10 ZXBM1015EV1 Thermistor Control For thermistor control, connections to the PCB are illustrated in Figure 4 below. A digital (buffered) Hall Sensor with open collector output is used in this example. The thermistor is 10KΩ NTC and J3 selects the linearization resistor network. For 100KΩ thermistor J3 would be left open and all other connections would remain as below. Figure 4 ZXBM1015EV1 ISSUE 1 - October 2005 11 ZXBM1015EV1 The circuit for the above configuration is Figure 5 below. Figure 5 ZXBM1015EV1 ISSUE 1 - October 2005 12 ZXBM1015EV1 PWM Control For PWM control, connections to the PCB are illustrated in Figure 6 below. A Naked Hall Sensor is used in this example. Figure 6 ZXBM1015EV1 ISSUE 1 - October 2005 13 ZXBM1015EV1 The circuit for the above configuration is Figure 7 below. Figure 7 ZXBM1015EV1 ISSUE 1 - October 2005 14 ZXBM1015EV1 Zetex application note AN42 details the adjustment of resistors R11, R12, R13 and R14 in order to get the required response. Configuration for Low Voltage (6V to 18V) Input For input voltages below 18V the input regulator and the output level shift transistors need to be bypassed. This is done as follows: Remove (de-solder) transistors Q6, Q8, resistors R24, R44 and R45. Connect jumper J5 (12V select). Insert resistors R44A and R45B (both 47Ω 0805). Half Bridge and Full Bridge Options The board layout enables the use of two complementary half bridge devices in SO8 packages (e.g. ZXMC6A09DN8) or one full bridge device in SM8 package (e.g. ZXHMC6A07T8). The pin-out for the half bridge devices follows the industry standard. Full bridge devices are not common and the pin-out is for the current Zetex standard which may be changed for future products. Layout considerations PCB tracks should be kept as short as possible to minimize ground bounce, and the ground pin of the device should be soldered directly to the ground plane. ZXBM1015EV1 ISSUE 1 - October 2005 15 ZXBM1015EV1 © Zetex Semiconductors plc 2005 Europe The Americas Zetex GmbH Zetex Inc Streitfeldstraße 19 700 Veterans Memorial Hwy D-81673 München Hauppauge, NY 11788 Germany USA Telefon: (49) 89 45 49 49 0 Telephone: (1) 631 360 2222 Fax: (49) 89 45 49 49 49 Fax: (1) 631 360 8222 email: [email protected] email: [email protected] Asia Zetex (Asia) Ltd 3701-04 Metroplaza Tower 1 Hing Fong Road, Kwai Fong Hong Kong Telephone: (852) 26100 611 Fax: (852) 24250 494 email: [email protected] Corporate Headquarters Zetex Semiconductors plc Zetex Technology Park, Chadderton, OL9 9LL United Kingdom Telephone (44) 161 622 4444 Fax: (44) 161 622 4446 email: [email protected] These offices are supported by agents and distributors in major countries world-wide. This publication is issued to provide outline information only which (unless agreed by the Company in writing) may not be used, applied or reproduced for any purpose or form part of any order or contract or be regarded as a representation relating to the products or services concerned. The Company reserves the right to alter without notice the specification, design, price or conditions of supply of any product or service. For the latest product information, log on to www.zetex.com ZXBM1015EV1 ISSUE 1 - October 2005 16