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Sample & Buy T echnical Documents Tools & Software Support & Community TMP815 SLDS153B –MAY 2009– REVISED NOVEMBER 2015 TMP815Variable-SpeedSingle-PhaseFull-WaveFan-MotorPredriver
1 Features
- Single-Phase Full-Wave Driving Predriver • Rotation Speed Detection (FG) and Lock Detection (RD) Output– Low Saturation Drive Using External P-channel
- Thermal Shutdown Circuit IncorporatedDevices at Top and N-channel Devices in Bottom in H-bridge Configuration Enables
2 ApplicationsHigh-Efficiency Low-Power Consumption Drive
- Variable Speed Control Possible With External • Server Fans PWM Input • Appliance Fans – Separately Excited Upper Direct PWM (f = 30 kHz) Control Method Ensures Quiet Speed 3 Description Control The TMP815 device is a single-phase bipolar driving motor predriver with a variable-speed function that is• Current Limiter Circuit Incorporated compatible with an external PWM signal. A highly– Chopper Type Current Limiting Made at Start- efficient and quiet variable-drive fan motor with low-up and During Lock power consumption can be achieved with few
- Reactive Current Cut Circuit Incorporated external parts. – Reactive Current Before Phase Change Is Cut This device is best suited for driving of the serversto Enable Silent and Low-Consumption Drive requiring large air flow and large current or the fan
- Minimum-Speed Setting Pin motors of consumer appliances. – Minimum Speed Can be Set With External Device Information (1) Resistor PART NUMBER PACKAGE BODY SIZE (NOM)• Soft-Start Setting Pin TMP815 TSSOP (PW) 4.40 mm × 5.00 mm• Lock Protection and Automatic Reset Circuits (1) For all available packages, see the orderable addendum atIncorporated the end of the data sheet. Simplified Schematic An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA.
SLDS153B – MAY 2009– REVISED NOVEMBER 2015 www.ti.com Table of Contents
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision A (May 2015) to Revision B Page
- Changed the Operating free-air temperature from (-30 to 95 °C) to (-40 to 125 °C) in the Recommended Operating Conditions table and added characterization data for the new temperature range in the Electrical Characteristics Changes from Original (May 2009) to Revision A Page
- Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
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IN– TMP815 www.ti.com SLDS153B – MAY 2009– REVISED NOVEMBER 2015
5 Pin Configuration and Functions
NAME NO. OUT2P 1 O Upper-side driver output OUT2N 2 O Lower-side driver output Power supply For the power stabilization capacitor on the signal side (see *2 in Figure 5), use the capacitance of 1 μF or more. Connect VCC and GND with a thick and short pattern.VCC 3 For the power stabilization capacitor on the power side (see *3 in Figure 5), use the capacitance of 1 μF or more. Connect the power supply on the power side and GND with a thick and short pattern. Current limiting detection (see *8 in Figure 5) SENSE 4 I When the pin voltage exceeds 0.2 V, the current is limited, and the operation enters the lower regeneration mode. Connect to GND if not used. Minimum speed setting (see *6 in Figure 5) If the device power supply is likely to be turned off first when the pin is used with external powerRMI 5 I supply, insert a current limiting resistor to prevent inflow of large current (also applies to VTH terminal). Connect to 5VREG with a pullup resistor if not used. Speed control (see *7 in Figure 5) For control with pulse input, insert a current limiting resistor and use the pin with a frequency ofVTH 6 I 20 kHz to 100 kHz (TI recommends 20 kHz to 50 kHz). For the control method, see Figure 2. Connect to GND if not used (at full speed). Connection to capacitor for generation of PWM basic frequency (see *5 in Figure 5) CP = 220 pF causes oscillation at f = 30 kHz, which is the basic frequency of PWM. As this isCPWM 7 O also used for the current limiting canceling signal, be sure to connect the capacitor even when speed control is not used. Rotation speed detection pin (see *9 in Figure 5) FG 8 O This is an open-collector output, which can detect the rotation speed from the FG output according to the phase change over. Keep this pin open when not used. IN– 9 I Hall input (see *4 in Figure 5) Hall input. Make connecting traces as short as possible to prevent carrying of noise. To further limit noise, insert a capacitor between IN+ and IN–. The Hall input circuit is a comparator havingIN+ 10 I a hysteresis of 15 mV. Also includes a soft-switch section with ±30-mV input-signal differential voltage. TI recommends that the Hall input level is a minimum of 100 mVp-p. Connection to the lock detection capacitor (see *10 in Figure 5) The constant current charge and discharge circuits cause locking when the pin voltage rises toCT 11 O 3 V and unlocking when pin voltage falls to 1.1 V. Connect to GND when not used (when locking is not necessary). Connection to the soft-start setting capacitor (see *11 in Figure 5) S-S 12 I Connect the capacitor between S-S and 5VREG to set the soft-start time, according to the capacitance that is chosen (see Figure 3 and Figure 4). Connect to GND when not used. 5VREG 13 O 5-V regulator output System ground (see *1 in Figure 5)SGND 14 Connection to the control-circuit power-supply system OUT1N 15 O Lower-side driver output OUT1P 16 O Upper-side driver output Copyright © 2009–2015, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: TMP815
SLDS153B – MAY 2009– REVISED NOVEMBER 2015 www.ti.com
6 Specifications
6.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted) (1) MIN MAX UNIT VCC Supply voltage 18 V VOUT Output voltage OUT1P, OUT1N, OUT2P, OUT2N 18 V OUT1N, OUT2N –20 IOUT Continuous output current mA OUT1P, OUT2P 20 VVTH Input voltage VTH, RMI 7 VVRMI VS-S Input/output voltage S-S 7 V VFG Output voltage FG 19 V IFG Continuous output current FG 10 mA I5VREG Continuous output current 5VREG –20 mA Tstg Storage temperature –65 150 °C (1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
6.2 ESD Ratings
Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins (1) ±2500 V(ESD) Electrostatic discharge VCharged device model (CDM), per JEDEC specification JESD22-C101, all ±1000pins (2) (1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. (2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.
6.3 Recommended Operating Conditions
TA = 25°C MIN MAX UNIT VCC Supply voltage 6 16 V VVTH VTH input voltage 0 5 V VRMI RMI input voltage 0 5 V VICM Hall input common phase input voltage 0.2 3 V TA Operating free-air temperature –40 125 °C
6.4 Thermal Information
THERMAL METRIC (1) PW (TSSOP) UNIT
16 PINS
RθJA Junction-to-ambient thermal resistance 108 °C/W RθJC(top) Junction-to-case (top) thermal resistance 94.2 °C/W RθJB Junction-to-board thermal resistance 31.5 °C/W ψJT Junction-to-top characterization parameter 38.9 °C/W ψJB Junction-to-board characterization parameter 1.9 °C/W RθJC(bot) Junction-to-case (bottom) thermal resistance 38.3 °C/W (1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953.
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6.5 Electrical Characteristics
6.6 Typical Characteristics
Figure 1. 5VREG Output Voltage (V) vs Output Current (mA)
0.47 µF to 1 µF VCC 5VREG IN+ IN– S-S CPWM SENSE SGND OUT2P OUT2N OUT1P OUT1N FG Discharge Circuit Discharge Pulse 5VREG Thermal Shutdown Oscillator Controller CT Hall VTHRMI TMP815 SLDS153B – MAY 2009– REVISED NOVEMBER 2015 www.ti.com
7 Detailed Description
7.1 Overview
The TMP815 device is a single phase bipolar predriver which uses the hall sensor and speed control inputs for driving the single phase motor connected through the H Bridge. The predriver outputs are designed for driving top side P-channel and bottom side N-channel FETs in the bridge. Multiple protections like overcurrent, soft start, speed control, lock detect, speed feedback and minimum speed are incorporated in the device.
7.2 Functional Block Diagram
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7.3 Feature Description
7.3.1 Speed Control
If not used, this pin needs to be connected to ground for full speed. A. Minimum speed setting (stop) mode. The low speed fan rotation occurs at the minimum speed set with the RMI pin. When the minimum speed is not set (RMI pin pulled up to 5VREG), the motor stops. speed. The rotation speed can be monitored with the FG output. D. PWM-IN input disconnection mode. The full-speed mode becomes effective when the VTH voltage is 1.1 V or less. Set VTH = GND when the speed control is not used. Figure 2. Speed Control Timing
7.3.2 Soft-Start
be used, then the this pin needs to be connected to ground.
Adjust the S-S pin voltage gradient by means of the capacitance of the oscillator between the S-S pin and 5VREG. Recommended capacitance is 0.1 μF to 1 μF. Figure 3. Soft-Start Timing (VVTH < VRMI) Adjust the S-S pin voltage gradient by means of the capacitance of the oscillator between the S-S pin and 5VREG. Recommended capacitance is 0.1 μF to 1 μF. Figure 4. Soft-Start Timing (VVTH > VRMI)
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7.3.3 Lock Detection
7.3.4 Current Limit
enters in lower regeneration mode (see *8 in Figure 5) If not used, this pin needs to be connected to ground.
7.3.5 Minimum Speed Setting
a pullup resistor if not used.
7.3.6 Speed Output
needs to be pulled high for using it.
7.3.7 Drive Frequency Selection
7.4 Device Functional Modes
Table 1. Drive Lock Truth Table (1) (2) (1) For VTH, RMI, and S-S pins, see Figure 2. Table 2. Speed Control Truth Table (1) (2) (1) For VTH, RMI, and S-S pins, see Figure 2.
SLDS153B – MAY 2009– REVISED NOVEMBER 2015 www.ti.com
8 Application and Implementation
Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality.
8.1 Application Information
The TMP815 device needs few external components for the features described in Feature Description . The device needs a 1-uF or greater capacitor connected at VCC. The device generates 5-V regulated output which can be used for pullups in the circuit as well as the Hall sensor.
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8.2 Typical Application
Figure 5 shows the typical application diagram. Figure 5. 12-V Sample Application Circuit
8.2.1 Design Requirements
- Input Voltage: 6 to 16 V
- VCC capacitor: 1 µF or more
- H Bridge top side: P-channel FETs
- H Bridge bottom side: N-channel FETs Copyright © 2009–2015, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Links: TMP815
8.2.2 Detailed Design Procedure
- CPWM Capacitor: 220 pF for 30-kHz switching or appropriate.
- VTH Pin connected to Ground for Full speed or supplied with pulsed input
- RMI Pin Pulled high to 5VREG output or external connection if required
- 5VREG connected to Hall Sensor. Hall sensor differential inputs connected to IN+ and IN-
- Current sense resistor connected to SENSE pin or GND.
- CT connected to Lock Detection capacitor (0.47 uF or calculated values) or to GND
- Drive outputs connected to the Gates of the H bridge switches.
- Pull up on FG. Power Supply:
- Make sure the power supply has set with sufficient current limit at the decided at the motor voltage. Build the circuit with the recommended connections at the pins. Test the motor circuit with hardware connected to it.
8.2.3 Application Curves
Figure 7. Motor Outputs and Phase Current at 100% DutyFigure 6. Start-up at 12 V (Soft Start)
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Figure 9. Motor Outputs and Phase Currents at 100% DutyFigure 8. Motor Outputs and Phase Current at Duty Cycle
9 Power Supply Recommendations
board. Use a 1-µF capacitor (minimum) to take care of load transient requirements.
10 Layout
10.1 Layout Guidelines
Connect 1-µF capacitor or greater between VCC and SGND with short traces. Connect a capacitor between IN+ and IN- for noise reduction picked from Hall sensors. Keep S-S, CT and CPWM capacitor near the device.
10.2 Layout Example
Figure 10. Recommended Layout Example
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www.ti.com SLDS153B – MAY 2009– REVISED NOVEMBER 2015
11 Device and Documentation Support
11.1 Community Resource
The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use. TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help solve problems with fellow engineers. Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and contact information for technical support.
11.2 Trademarks
E2E is a trademark of Texas Instruments. All other trademarks are the property of their respective owners.
11.3 Electrostatic Discharge Caution
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
11.4 Glossary
SLYZ022 — TI Glossary. This glossary lists and explains terms, acronyms, and definitions.
12 Mechanical, Packaging, and Orderable Information
The following pages include mechanical, packaging, and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of this document. For browser-based versions of this data sheet, refer to the left-hand navigation. Copyright © 2009–2015, Texas Instruments Incorporated Submit Documentation Feedback 15 Product Folder Links: TMP815
*All dimensions are nominal Device Package Type Package Drawing Pins SPQ Reel Diameter (mm) Reel Width W1 (mm) (mm) (mm) (mm) (mm) W (mm) Pin1 Quadrant PACKAGE MATERIALS INFORMATION www.ti.com 18-Nov-2015 Pack Materials-Page 1
*All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TMP815PWR TSSOP PW 16 2000 367.0 367.0 35.0 PACKAGE MATERIALS INFORMATION www.ti.com 18-Nov-2015 Pack Materials-Page 2
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