TMP814 www.ti.com........................................................................................................................................................................................................ SLDS151 – MAY 2009 VARIABLE SPEED SINGLE-PHASE FULL-WAVE FAN MOTOR PRE-DRIVER FEATURES 1 • • • • • • PW PACKAGE Pre-Driver for Single-Phase Full-Wave Drive (TOP VIEW) – PNP-NMOS is Used as an External Power 20 1 OUT1P OUT2P TR, Enabling High-Efficiency 19 2 OUT1N OUT2N VCC 18 3 VOVER Low-Consumption Drive by Means of the 17 4 SGND VLIM Low-Saturation Output and Single-Phase 5 16 6VREG SENSE Full-Wave Drive (PMOS-NMOS Also 15 6 ROFF RMI 7 14 CT VTH Applicable) 13 8 IN+ CPWM External PWM Input Enabling Variable Speed 9 12 HB FG Control 10 11 IN– RD – Separately-Excited Upper Direct PWM (f = 25 kHz) Control Method, Enabling Highly DESCRIPTION/ Silent Speed Control ORDERING INFORMATION Compatible with 12-V, 24-V, and 48-V Power The TFAN212D004 is a single-phase bipolar variable Supplies speed fan motor predriver that works with an external Current Limiter Circuit Incorporated PWM signal. A highly efficient, quiet and low power – Chopper Type Current Limit at Start consumption motor driver circuit, with a large variable speed, can be implemented by adding a small Reactive Current Cut Circuit Incorporated number of external components. – Reactive Current Before Phase Change is This device is optimal for driving large scale fan Cut to Enable Silent and Low-Consumption motors (with large air volume and large current) such Drive as those used in servers and consumer products. Minimum Speed Setting Pin – Minimum Speed Can Be Set With External Resistor. Start Assistance Circuit Enables Start at Extremely Low Speed. Constant-Voltage Output Pin for Hall Bias Lock Protection and Automatic Reset Functions Incorporated FG (Rotation Speed Detection) and RD (Lock Detection) Output ORDERING INFORMATION (1) <br/> <br/> <br/> <br/> • • <br/> <br/> <br/> <br/> • <br/> PACKAGE (2) TA -30°C to 95°C (1) (2) TSSOP – PW Reel of 2000 ORDERABLE PART NUMBER TMP814PWR TOP-SIDE MARKING TMP814 For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site at www.ti.com. Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/package. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2009, Texas Instruments Incorporated TMP814 SLDS151 – MAY 2009........................................................................................................................................................................................................ www.ti.com BLOCK DIAGRAM CT Discharge Circuit 0.47 µF to 1 µF FG RD Discharge Pulse VCC 6VREG 6VREG OUT1N OUT1P ROFF Hall Controller Hall Bias HB Hysteresis Amplifier IN+ IN– OUT2N OUT2P Thermal Shutdown Oscillator RMI VTH VLIM SENSE CPWM SGND TRUTH TABLE During full-speed rotation IN– IN+ CT OUT1P OUT1N OUT2P OUT2N FG RD MODE H L L L – – H L L OUT1 → 2 drive L H – H L – OFF H L L H VTH 2 H CPWM L H H L OFF – – H L – H OFF – OFF OUT2 → 1 drive OFF Lock protection IN– IN+ OUT1P OUT1N OUT2P OUT2N MODE H L L – – H OUT1 → 2 Drive L H – H L – OUT2 → 1 Drive H L OFF – – H L H – H OFF – During rotation, regeneration in lower TR Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): TMP814 TMP814 www.ti.com........................................................................................................................................................................................................ SLDS151 – MAY 2009 TERMINAL FUNCTIONS TERMINAL NO. NAME I/O DESCRIPTION 1 OUT2P O Upper-side driver output 2 OUT2N O Lower-side driver output Power supply. For the CM capacitor that is a power stabilization capacitor for PWM drive and for absorption of kickback, the capacitance of 0.1 µF to 1 µF is used. In this device, the lower TR performs current regeneration by switching the upper TR. Connect CM between VCC and GND, with the thick pattern and along the shortest route. Use a zener diode if kickback causes excessive increase of the supply voltage, because such increase may damage the device. 3 VCC 4 VLIM I Activates the current limiter when SENSE voltage is higher than VLIM voltage. Connect to 6VREG when not used. 5 SENSE I Sense input. Connect to GND when not used. 6 RMI I Minimum speed setting. Connect to 6VREG when not used. If device power can be removed before power is removed from RMI, insert a current limiting resistor to prevent inflow of large current. 7 VTH I VTH voltage is generated by filtering the PWM-IN input. If device power can be removed before power is removed from VTH, insert a current limiting resistor to prevent inflow of large current. 8 CPWM O Connect to capacitor CP to set the PWM oscillation frequency. With CP = 100 pF, oscillation occurs at 25 kHz and provides the basic frequency of PWM. 9 FG O Open collector output, which can detect the rotation speed using the FG output according to the phase shift. Leave open when not used. 10 RD O Open collector output. Outputs low during rotation and high at stop. Leave open when not used. 11 IN– I Hall input 12 HB O This is a Hall element bias, that is, the 1.5-V constant-voltage output. 13 IN+ I Hall input. Make connecting traces as short as possible to prevent carrying of noise. To futher limit noise, insert a capacitor between IN+ and IN–. The Hall input circuit is a comparator having a hysteresis of 20 mV. The application should ensure that the Hall input level more than three times (60 mVp-p) this hysteresis. 14 CT O Lock detection time setting. Capacitor CT is connected. 15 ROFF I Sets the soft switching time to cut the reactive current before phase change. Connect to 6VREG when not used. 16 6VREG O 6-V regulator output 17 SGND 18 VOVER O Constant-voltage bias and should be used for application of 24 V and 48 V (see Figure 2). A current limiting resistor should be used. Leave open when not used. 19 OUT1N O Lower-side driver output 20 OUT1P O Upper-side driver output Connected to the control circuit power supply system. Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): TMP814 3 TMP814 SLDS151 – MAY 2009........................................................................................................................................................................................................ www.ti.com ABSOLUTE MAXIMUM RATINGS (1) over operating free-air temperature range (unless otherwise noted) VALUE UNIT 18 V OUT1P, OUT1N, OUT2P, OUT2N 18 V Continuous output current OUT1P, OUT1N, OUT2P, OUT2N 50 mA Continuous output current HB 10 mA VTH Input voltage VTH 8 V VRD VFG Output voltage RD, FG 18 V IRD IFG Continuous output current RD, FG 10 mA θJA Package thermal impedance (2) 83 °C/W Tstg Storage temperature range –65 to 150 °C VCC Supply voltage VOUT Output voltage IOUT IHB (1) (2) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. The package thermal impedance is calculated in accordance with JESD 51-7. RECOMMENDED OPERATING CONDITIONS TA = 25°C VCC Supply voltage VTH VTH input voltage VICM Hall input common phase input voltage TA Operating free-air temperature MIN MAX 6 16 V 0 7 V 0.2 3 V –30 95 °C MIN TYP MAX UNIT 5.8 6 6.15 V Full-speed mode UNIT ELECTRICAL CHARACTERISTICS VCC = 12 V, TA = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS V6VREG Output voltage 6VREG VVOVER Output voltage VOVER VCRH High-level output voltage VCRL Low-level output voltage fPWM Oscillation frequency 18 25 32 kHz VCTH High-level output voltage 3.4 3.6 3.8 V VCTL Low-level output voltage 1.4 1.6 1.8 V ICT1 Charge current 1.6 2 2.5 µA ICT2 Discharge current 0.16 0.2 0.28 µA RCT Charge/discharge current ratio 8 10 12 VON Output voltage OUT_N 4 10 V IOP Sink current OUT_P 15 20 mA VHN Hall input sensitivity VRD VFG Low-level output voltage IRDL IFGL Output leakage current ICC Supply current 4 IHB = 5 mA CPWM CP = 100 pF CT H+, H- IO = 20 mA 12 12.8 13.6 V 4.35 4.55 4.75 V 1.45 1.65 1.85 V Zero peak value (including offset and hysteresis) IRD = 5 mA or IFG = 5 mA 10 20 mV 0.15 0.3 V 30 µA RD, FG VRD = 16 V or VFG = 16 V During drive 4 10 14 During lock protection 4 10 14 Submit Documentation Feedback mA Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): TMP814 TMP814 www.ti.com........................................................................................................................................................................................................ SLDS151 – MAY 2009 APPLICATION INFORMATION CB = ~ 0.022 µF RB = 10 kW ROUT = 100 W SOP8901 RF RFG, RRD = 10 kW to 100 W VCC 6VREG H VOVER RD HB FG IN– SENSE IN+ VLIM RMI 6VREG VTH OUT1P ROFF R = 0 to 5 kW OUT1N PWM-IN CPWM CP = 100 pF 25 kHz OUT2P CT OUT2N SGND CT = 0.47 µF Figure 1. 12-V Sample Application Circuit Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): TMP814 5 TMP814 SLDS151 – MAY 2009........................................................................................................................................................................................................ www.ti.com RF VCC 6VREG H VOVER RD HB FG IN– SENSE IN+ VLIM RMI 6VREG ROFF VTH OUT1P OUT1N PWM-IN CP = 100 pF CPWM OUT2P CT OUT2N SGND CT = 0.47 µF Figure 2. 24-V/48-V Sample Application Circuit 6 Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): TMP814 TMP814 www.ti.com........................................................................................................................................................................................................ SLDS151 – MAY 2009 f = 25 kHz (CP = 100 pF) ON duty large VTH voltage 4.55 V RMI voltage CPWM 1.65 V ON duty small PWM-IN disconnected 0V Rotation set to minimum speed (stop mode) PWM control variable speed Low speed High speed Full speed 12 V VCC 0V FG A. Minimum speed setting (stop) mode PWM-IN input is filtered to generate the VTH voltage. At low speed, the fan rotates with the minimum speed set with RMI during low speed. If the minimum speed is not set (RMI = 6VREG), the fan stops. B. Low ↔ high speed mode PWM control is made through comparison of oscillation and VTH voltages with CPWM changing between 1.6 V ↔ 4.6 V. Upper and lower TRs are turned ON when the VTH voltage is higher. The upper output TR is turned OFF when the VTH voltage is lower, and the coil current is regenerated in the lower TR. Therefore, as the VTH voltage lowers, the output ON duty increases, increasing the coil current and raising the motor speed. The rotation speed is fed back by the FG output. C. Full speed mode The full-speed mode becomes effective with the VTH voltage of 1.65 V or less. (VTH must be equal to GND when the speed control is not used.) D. PWM-IN input disconnection mode When the PWM-IN input pin is disconnected, VTH becomes 1.65 V or less and the output enables full drive at 100%. The fan runs at full speed (see Figure 1). Figure 3. Control Timing Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): TMP814 7 PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device TMP814PWR Package Package Pins Type Drawing TSSOP PW 20 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 2000 330.0 16.4 Pack Materials-Page 1 6.95 B0 (mm) K0 (mm) P1 (mm) 7.1 1.6 8.0 W Pin1 (mm) Quadrant 16.0 Q1 PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TMP814PWR TSSOP PW 20 2000 367.0 367.0 38.0 Pack Materials-Page 2 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46C and to discontinue any product or service per JESD48B. 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