ANH002 Application Note AH280 Demo Board Smart Hall-Effect Fan Driver Contents 1. Features 2. General Description 3. Block Diagram 4. Pin Configuration 5. Absolute Maximum Ratings 6. Typical Performance Characteristics 7. Application Information 8. Manufacturers and Distributor Contact Information 9. Demo Board Schematic This application note contains new product information. Diodes, Inc. reserves the right to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. 1/12 ANH002 – App. Note 1 May 2006 www.diodes.com © Diodes Incorporated ANH002 Application Note AH280 Demo Board Smart Hall-Effect Fan Driver 1.0 Features - On Chip Hall Plate Built-in Zener Protection for Output Driver Built-in Protection Diode for Power Reverse Connecting Rotor-Locked Detection Automatically Restart after Release of Motor Locking Adjustable Auto Restart Time Operating Voltage: 3.5~20 V Output Current: IO(AVE) = 500mA Package: SIP-5L Less External Components 2.0 General Description AH280 is the integrated Hall sensor owning two complementary outputs for the motor’s coil driving, auto locked shutdown and auto restart functions. The functional block diagram includes a regulator with temperature-compensated band-gap, an on-chip Hall voltage generator, a comparator, a Schmitt trigger and two current output drivers. The regulator can provide a wide operational voltage range. The Hall voltage generator is to amplify the Hall voltage due to the Hall effect. A Schmitt trigger is to provide switching hysteresis for noise rejection. To avoid coil burning, the rotor-lock detection circuit will shutdown the output driver if it detects rotor-lock status. A rotation recovery circuit is to restart the motor after the rotor-lock is removed. In addition, the auto re-start time is flexible by adjusting the capacitance (CT). 2/12 ANH002 – App. Note 1 May 2006 www.diodes.com © Diodes Incorporated ANH002 Application Note AH280 Demo Board Smart Hall-Effect Fan Driver 3.0 Block Diagram Vcc 2 Regulator Hall sensor Control Logic Lock Shutdown Auto restart circuits 3 DO 4 DOB 5 GND 1 CT 4.0 Pin Configuration Front View ( Branded side) 1 2 3 4 5 Symbol CT VCC DO DOB GND P/I/O Pin # Description I P O O P 1 2 3 4 5 Timing Cap Positive Power Supply Driver Output Driver Inverted Output Ground 3/12 ANH002 – App. Note 1 May 2006 www.diodes.com © Diodes Incorporated ANH002 Application Note AH280 Demo Board Smart Hall-Effect Fan Driver 5.0 Absolute Maximum Ratings ( Ta = 25°C ) Characteristic Symbol Rating Unit VCB 36 20 500 800 700 -20~85 -55~150 V V Internal Zener-Protected Voltage Operating Supply Voltage VCC OPR IO (AVE) IO (PEAK) PD TOPR TSTG Output Current Power Dissipation Operating Temperature Storage Temperature mA mW °C °C 6.0 Typical Performance Characteristics 1. Min. Start-up ( V = 3.5V, Icc = 0.06A ) a. CH1 = DO, CH2 = DOB, CH3 = CT, CH4 = I (DO): 4/12 ANH002 – App. Note 1 May 2006 www.diodes.com © Diodes Incorporated ANH002 Application Note AH280 Demo Board Smart Hall-Effect Fan Driver b. CH1 = DO, CH2 = DOB, CH3 = CT, CH4 = I (DOB): c. CH1 = DO, CH2 = DOB, CH3 = CT for DC Fan Locked: 5/12 ANH002 – App. Note 1 May 2006 www.diodes.com © Diodes Incorporated ANH002 Application Note AH280 Demo Board Smart Hall-Effect Fan Driver 6.0.2. Operation ( V = 12V, Icc = 0.18A ) a. CH1 = DO, CH2 = DOB, CH3 = CT, CH4 = I (DO): b. CH1 = DO, CH2 = DOB, CH3 = CT, CH4 = I (DOB): 6/12 ANH002 – App. Note 1 May 2006 www.diodes.com © Diodes Incorporated ANH002 Application Note AH280 Demo Board Smart Hall-Effect Fan Driver c. CH1 = DO, CH2 = DOB, CH3 = CT for DC Fan Locked: 6.0.3. Max Working ( V = 20V, Icc = 0.29A ) a. CH1 = DO, CH2 = DOB, CH3 = CT, CH4 = I (DO): 7/12 ANH002 – App. Note 1 May 2006 www.diodes.com © Diodes Incorporated ANH002 Application Note AH280 Demo Board Smart Hall-Effect Fan Driver b. CH1 = DO, CH2 = DOB, CH3 = CT, CH4 = I (DOB): c. CH1 = DO, CH2 = DOB, CH3 = CT for DC Fan Locked： 8/12 ANH002 – App. Note 1 May 2006 www.diodes.com © Diodes Incorporated ANH002 Application Note AH280 Demo Board Smart Hall-Effect Fan Driver 6.0.4. Vrpp Volt. 7.0 Application Information 9/12 ANH002 – App. Note 1 May 2006 www.diodes.com © Diodes Incorporated ANH002 Application Note AH280 Demo Board Smart Hall-Effect Fan Driver 7.0.1 Parts List (Board of Materials): L1 mH/Z (Ω) Coil 1 Coil 2 Coil 1+ Coil 2 100HZ 9.28mH/36.05Ω 9.32mH /36.74Ω 37.26mH/75.88Ω Item Part Number MFG/Dist. Description Value Quantity EC1 Std Aluminum Electrolytic 1uf/50V 1 C1 Std Ceramic Capacitor 1uf/50V 1 C2 Std Ceramic Capacitor 1uf/50V 1 D1 1N4001 SMD/Diode 50V, 2A 1 L1 BOARD-TECH DIP/coil1, 2, com 50V, 2A 1 U1 AH280 20V, 0.5A 1 Hall Ic DIP Anachip 8.0 Manufacturers and Distributor Contact Information Anachip Corp. 易亨電子股份有限公司 Phone Fax Website HAWYANG Electronics Co., LTD 浩陽科技有限公司 Phone Fax Website Phone +886-2-2655-1818 +886-2-2655-1616 http://www.anachip.com.tw http://www.anachip.com +886-2-2219-0903 +886-2-2219-3189 http://www.hawyang.com.tw +886-2-8912-1688 Fax Website +886-2-8912-1699 http://www.jaenn.com.tw JAENN Electronics Co., LTD 振遠科技有限公司 10/12 ANH002 – App. Note 1 May 2006 www.diodes.com © Diodes Incorporated ANH002 Application Note AH280 Demo Board Smart Hall-Effect Fan Driver 9.0 Demo Board Schematic: Typical PC Board Layout, Adjustable Output: (1x Size) (1). Component Side PC Board Layout 11/12 ANH002 – App. Note 1 May 2006 www.diodes.com © Diodes Incorporated ANH002 Application Note AH280 Demo Board Smart Hall-Effect Fan Driver (2). Solder Side PC Board Layout 12/12 ANH002 – App. Note 1 May 2006 www.diodes.com © Diodes Incorporated