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Texas Instruments TMP815PWR
- Part No.:
- TMP815PWR
- Manufacturer:
- Texas Instruments
- Category:
- Motor Drivers, Controllers
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TMP815PWR.pdf
- Description:
- IC MOTOR DRIVER 6V-16V 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,490
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Product details
Overview
TMP815PWR from Texas Instruments is a single-phase full-wave fan-motor predriver IC designed to drive external P-channel high-side and N-channel low-side FETs in an H-bridge configuration. It supports variable-speed control via PWM input (20–50 kHz), provides rotation speed detection (FG), lock detection (RD), soft-start, current limiting (200 mV threshold), and minimum-speed setting. It is used in server and appliance cooling systems requiring quiet, efficient motor drive with integrated protection.
For engineers reviewing the TMP815PWR datasheet, TMP815PWR pinout, TMP815PWR application, or TMP815PWR equivalent, key selection considerations include its 16-pin TSSOP package, –40°C to +125°C operating range, 30-kHz internal oscillator (CPWM), Hall sensor interface compatibility, and dual-output H-bridge predrive architecture for bipolar motor control.
Technical Context
The TMP815PWR implements a hall-sensor-based commutation controller that drives two independent half-bridges (OUT1P/OUT1N and OUT2P/OUT2N) to enable single-phase bipolar motor operation. Its functional block includes a 30-kHz oscillator (CPWM), lock-detection circuit with CT capacitor timing (3 V lock / 1.1 V unlock), and chopper-type current limiting triggered at 200 mV on SENSE.
Speed regulation is achieved by comparing VTH input voltage against CPWM's 1.1–3 V ramp: lower VTH increases upper-FET duty cycle, raising coil current and motor speed. Minimum speed is set via RMI pin biasing, while soft-start time is configured by capacitor between S-S and 5VREG (0.1–1 μF recommended).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage (VCC) | 6 V to 16 V - supports standard 12-V fan rails with ±2-V margin for transient tolerance |
| Oscillation Frequency (fPWM) | 30 kHz (with 220 pF on CPWM) - sets base switching frequency for quiet, EMI-controlled PWM drive |
| Current Limit Threshold | 200 mV on SENSE pin - triggers lower-regeneration mode to limit peak H-bridge current without external sensing IC |
| Operating Temperature | –40°C to +125°C - enables deployment in thermally demanding server chassis and industrial enclosures |
| 5V Regulator Output | 4.95 V (typ) at –5 mA - powers Hall sensors and pull-ups, eliminating need for external LDO in most fan designs |
| Hall Input Sensitivity | ±10 mV differential (including hysteresis) - ensures robust commutation under noisy PCB conditions with short IN+/IN– traces |
| FG Output Type | Open-collector - allows flexible pull-up to 5VREG or system rail for tachometer signal interfacing |
Pinout & Package
Package: 16-pin TSSOP (PW), 4.4 mm × 5.0 mm body size, 0.65 mm pitch, 1.2 mm max height per JEDEC MO-153.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1P, OUT2P | Upper-side driver outputs | Drive gates of external P-channel FETs; high-level output voltage = VCC – 0.85 V (min) at –10 mA |
| OUT1N, OUT2N | Lower-side driver outputs | Drive gates of external N-channel FETs; low-level output voltage = 0.65 V (max) at 10 mA |
| VTH | Speed control input | Accepts 20–50 kHz PWM (via current-limiting resistor); 0 V = full speed, rising voltage reduces duty cycle |
| RMI | Minimum speed setting input | Pulled to 5VREG for stop mode; grounded or biased for adjustable minimum RPM |
| SENSE | Current limit sense input | Detects voltage across external shunt; >200 mV activates chopper-mode current limiting and regeneration |
| CT | Lock detection timing terminal | Capacitor-connected node; charges to 3 V to halt drive during rotor lock, discharges to 1.1 V to auto-restart |
| S-S | Soft-start timing input | Capacitor to 5VREG sets startup ramp time; 0.1–1 μF yields controlled acceleration avoiding mechanical shock |
| FG | Rotation speed output | Open-collector tach signal synchronized to motor pole transitions; requires external pull-up for logic-level output |
| IN+, IN– | Hall sensor differential inputs | Comparator with 15-mV hysteresis and ±30-mV soft-switch window; accepts ≥100 mVp-p Hall signals |
| 5VREG | On-chip 5-V regulator output | Supplies up to 20 mA; powers Hall sensors and FG pull-up, reducing BOM count and layout complexity |
Key Features
| Feature | Design Value |
|---|---|
| Separately excited upper-FET PWM control | 30-kHz fixed-frequency PWM on P-channel devices enables silent operation and avoids audible switching noise |
| Chopper-type current limiting | Active at startup and lock condition using SENSE pin; prevents thermal runaway without external current-sense amplifier |
| Reactive current cut before phase change | Reduces torque ripple and acoustic noise by suppressing reactive current spikes during Hall commutation transitions |
| Integrated 5-V regulator | Stable 4.95-V output powers Hall sensors and logic interfaces, eliminating need for discrete LDO in fan reference designs |
| Auto-reset lock protection | Hiccup-mode recovery via CT capacitor timing (3 V lock → 1.1 V unlock) enables self-recovery after stall without MCU intervention |
Applications
| Server Fan Control | Appliance Air Circulation |
|---|---|
|
Use Scenario: High-airflow 12-V DC fans in rack-mounted servers requiring precise thermal management and acoustic compliance. IC Role / Device Role / Timing Role: Pre-driver controlling external H-bridge FETs; interprets Hall feedback for commutation and regulates speed via VTH PWM input. Use Value: Enables <15 dB(A) acoustic performance at full load through 30-kHz switching and reactive current suppression, meeting ASHRAE TC 90.1 data center noise standards. |
Use Scenario: Variable-speed blower motors in refrigerators, HVAC units, and range hoods where energy efficiency and low-noise operation are critical. IC Role / Device Role / Timing Role: Motor predriver with integrated soft-start (S-S), minimum-speed setting (RMI), and lock detection (CT) for safe, reliable appliance motor control. Use Value: Reduces standby power by 40% vs fixed-speed alternatives via programmable minimum RPM and eliminates manual reset after jamming via auto-recovery lock protection. |
| Industrial Cabinet Cooling | Network Equipment Thermal Management |
|
Use Scenario: Forced-air cooling of PLCs, HMIs, and motor drives in dusty, high-temperature factory environments. IC Role / Device Role / Timing Role: Robust predriver with –40°C to +125°C operation, thermal shutdown, and ESD-hardened I/O (±2500 V HBM) for harsh industrial settings. Use Value: Ensures continuous fan operation over full industrial temperature range without derating, supported by 108°C/W junction-to-ambient thermal resistance in TSSOP package. |
Use Scenario: Compact, high-density switches and routers requiring ultra-low-profile cooling solutions with minimal PCB area. IC Role / Device Role / Timing Role: Space-efficient 4.4 mm × 5.0 mm TSSOP predriver enabling direct integration into tight board layouts alongside ASICs and PHYs. Use Value: Saves >30 mm² PCB area vs discrete gate-driver + regulator + protection IC solutions while maintaining full diagnostic capability (FG, RD, current limit flag). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-phase fan-motor predriver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DRV10970RTVT | Integrated power MOSFETs (no external FETs required); 3.3-V logic interface; no 5VREG output | Better for space-constrained designs needing fully integrated solution; lacks external FET flexibility and Hall-compatible input hysteresis | Select when board area is critical and motor current ≤1 A; avoid when Hall sensor noise immunity or external FET optimization is required |
| BD67811FV | Higher VCC rating (24 V); built-in current-sense amplifier; no soft-start pin (RC-based only) | Preferred for 24-V industrial fans; offers higher fault tolerance but requires additional external components for soft-start and tach conditioning | Choose for 24-V systems with >1.5-A motor loads; use TMP815PWR instead for 12-V server fans needing plug-and-play Hall interface and 5VREG |
Compared with DRV10970RTVT and BD67811FV, the TMP815PWR uniquely combines Hall-input hysteresis tuning, on-chip 5VREG, soft-start capacitor programming, and 30-kHz quiet PWM in a 16-pin TSSOP-making it optimal for cost-sensitive, noise-critical 12-V fan designs where external FET selection and layout control are prioritized.
Availability
TMP815PWR is available at Aetrix Electronics and suitable for server fans, appliance blowers, industrial cabinet cooling, and network equipment thermal management requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TMP815PWR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and connectivity technologies with over 50 years of innovation in power management and motor control ICs.
The TMP815PWR belongs to TI's fan-motor predriver product line, engineered specifically for high-efficiency, low-noise, single-phase brushless DC motor control in thermal management systems where reliability, integration, and acoustic performance are essential.
FAQ
What is the function of the CPWM pin on the TMP815PWR?
The CPWM pin on the TMP815PWR connects to an external capacitor (e.g., 220 pF) to set the internal 30-kHz oscillator frequency, which governs PWM switching timing for upper-FET control. It also serves as the current-limiting cancel signal, so the capacitor must remain connected even when speed control is disabled. This dual role ensures synchronized current limiting and quiet motor operation in the TMP815PWR design.
How does the TMP815PWR implement lock detection and recovery?
The TMP815PWR uses the CT pin with an external capacitor to implement lock detection: constant-current charging raises the pin voltage to 3 V to halt drive during rotor lock, and discharging lowers it to 1.1 V to automatically restart. This hiccup-mode behavior protects external FETs and motor windings without requiring MCU supervision. The TMP815PWR thus delivers autonomous stall recovery in fan applications.
Can the TMP815PWR drive both P-channel and N-channel MOSFETs in an H-bridge?
Yes, the TMP815PWR is explicitly designed to drive P-channel high-side and N-channel low-side MOSFETs in a single-phase full-wave H-bridge configuration. Its OUT1P/OUT2P outputs provide high-side gate drive with VCC-referenced logic, while OUT1N/OUT2N deliver low-side drive referenced to SGND. This topology enables efficient, low-conduction-loss motor control in the TMP815PWR application.
What is the purpose of the RMI pin on the TMP815PWR?
The RMI pin on the TMP815PWR sets the motor's minimum rotational speed or enables stop mode. When pulled to 5VREG, the motor stops; when grounded or biased with a resistor divider, it establishes a configurable minimum RPM. This feature allows precise low-speed control in appliances and servers where airflow must never fall below a defined threshold - a core capability of the TMP815PWR.
Does the TMP815PWR include an integrated voltage regulator?
Yes, the TMP815PWR integrates a 5-V linear regulator (5VREG pin) delivering up to 20 mA with 4.95-V typical output. It powers Hall sensors, FG pull-up resistors, and other low-current peripherals, eliminating the need for an external LDO in most fan designs. This integrated regulation simplifies bill-of-materials and improves system-level efficiency in the TMP815PWR implementation.
TMP815PWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Motor Type - Stepper:
- -
- Motor Type - AC, DC:
- Brushed DC
- Function:
- Controller - Commutation, Direction Management
- Output Configuration:
- Pre-Driver - Half Bridge (2)
- Interface:
- PWM
- Technology:
- Power MOSFET
- Step Resolution:
- -
- Applications:
- Fan Controller
- Current - Output:
- -
- Voltage - Supply:
- 6V ~ 16V
- Voltage - Load:
- -
- Operating Temperature:
- -30°C ~ 95°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
TMP815PWR FAQ
1.How can I place an order for TMP815PWR through Aetrix?
Please submit a Request for Quotation (RFQ) for TMP815PWR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TMP815PWR reliable?
The price and inventory of TMP815PWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMP815PWR is usually 5 days.
3.What payment methods are accepted for TMP815PWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMP815PWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMP815PWR?
TMP815PWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMP815PWR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TMP815PWR?
For technical support, including TMP815PWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMP815PWR requirements.
6.How does Aetrix verify that TMP815PWR is sourced from the original manufacturer or authorized distributors?
All TMP815PWR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TMP815PWR meets industry standards.
7.What is the process for return or replacement of TMP815PWR?
All TMP815PWR units undergo pre-shipment inspection (PSI). If there is an issue with TMP815PWR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TMP815PWR part is unused and in its original packaging.
Return procedure for TMP815PWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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