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Monolithic Power Systems Inc. MP6517GJS-XXXX-Z
- Part No.:
- MP6517GJS-XXXX-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Motor Drivers, Controllers
- Package:
- SOT-23-6 Thin, Flat Leads
- Datasheet:
-
MP6517GJS-XXXX-Z.pdf
- Description:
- SINGLE PHASE BLDC MOTOR DRIVER W
- Quantity:
- Payment:
- Shipping:
Inventory:1,707
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Product details
Overview
MP6517GJS-XXXX-Z from Monolithic Power Systems is a programmable single-phase BLDC motor driver IC with integrated Hall sensor, power MOSFETs (850 mΩ total RDS(on)), and reverse voltage protection. It delivers up to 1.2 A output current limit, operates from 3.3 V to 18 V, and supports 12 kHz–48 kHz PWM speed control for CPU fan applications in servers and desktops.
For engineers reviewing the MP6517GJS-XXXX-Z datasheet, MP6517GJS-XXXX-Z pinout, MP6517GJS-XXXX-Z application, or MP6517GJS-XXXX-Z equivalent, key selection criteria include programmable RPM vs. duty curve, rotor lock detection with auto-recovery, soft on/off phase transition timing (1.45°–45°), FG/RD open-drain speed/fault signaling, and TSOT23-6-SL package thermal performance (θJA = 100°C/W).
Technical Context
The MP6517GJS-XXXX-Z implements closed-loop commutation using an embedded Hall sensor to detect rotor position, with configurable θe delay (0°–15°) between Hall edge and winding current zero-crossing. Its internal PLL locks to back-EMF zero-crossing for stable phase alignment during steady-state rotation.
It features dual-stage overcurrent protection: fast OCP (1.8 A ±20%, ~1.5 µs blanking) for short-circuit events and programmable SUCL (860 mA ±15%) for startup current limiting. Thermal shutdown triggers at 150°C with 25°C hysteresis and automatic recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.3 V to 18 V - Supports wide-range DC supply without external LDO; includes reverse-voltage protection to eliminate external diode. |
| Output Current Limit | 860 mA (SUCL default) - Programmable via OTP register; enables controlled spin-up of high-inertia fans without torque shock. |
| PWM Input Frequency | 12 kHz to 48 kHz - Compatible with standard system PWM controllers; avoids audible noise while maintaining resolution. |
| Switching Frequency | 26 kHz ±15% - Fixed above audible range; reduces EMI and acoustic noise in fan drive applications. |
| Hall Sensor Sensitivity | ±1 mT minimum field - Enables reliable rotor position detection with standard ferrite magnets in compact fan assemblies. |
| FG/RD Output Type | Open-drain - Allows flexible pull-up voltage selection (e.g., 3.3 V or 5 V) and direct connection to microcontroller GPIO or optocoupler inputs. |
| Thermal Shutdown Threshold | 150°C - Protects die under sustained overload; recovers automatically when junction cools by ≥25°C. |
| Package Thermal Resistance | θJA = 100°C/W - Validated on 4-layer PCB; defines maximum continuous power dissipation (1.25 W at TA = 25°C). |
Pinout & Package
MP6517GJS-XXXX-Z is housed in a thermally enhanced TSOT23-6-SL package (0.95 mm height, wettable flanks), optimized for high-density fan control PCB layouts and automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Power ground reference | Low-impedance return path for motor current and IC bias; must be connected to solid ground plane. |
| 2 VCC | Supply input | Accepts 3.3 V–18 V; includes reverse-voltage protection and UVLO (3 V threshold) with 0.15 V hysteresis. |
| 3 FG/RD/SCL | Multi-function open-drain output | Configurable as tachometer (FG), rotor lock fault (RD), or I²C clock (SCL) in test mode; requires external pull-up. |
| 4 PWM/SDA | Speed control input / I²C data | PWM duty-cycle interface (12–48 kHz); internal 100 kΩ pull-up; doubles as I²C SDA in test mode. |
| 5 OUT2 | Half-bridge low-side output | Connects to motor winding mid-point; switches with complementary timing to OUT1 for single-phase BLDC drive. |
| 6 OUT1 | Half-bridge high-side output | Drives motor winding; integrates N-channel MOSFET with 520 mΩ RDS(on) (HS) and 330 mΩ (LS). |
Key Features
| Feature | Design Value |
|---|---|
| Programmable RPM vs. PWM duty curve | 8-byte lookup table (PWMO[7:0]) stored in OTP; enables linear, logarithmic, or custom fan curves without firmware changes. |
| Soft on/off phase transition | Adjustable electrical angle (1.45°–45°) via SON_100/SOFF_100 registers; eliminates torque ripple and audible "click" at startup/shutdown. |
| Automatic phase-lock detection | PLL synchronizes switching to winding BEMF zero-crossing; maintains stable commutation across speed/load variations without external sensors. |
| Rotor deadlock protection with timed retry | Detects stalled rotor within 0.6 s; disables outputs and retries after 1.8–3.6 s (RLOCK_SEL configurable); prevents thermal runaway. |
| Integrated Hall sensor + signal conditioning | High-sensitivity cell (±1 mT) located at (540 µm, 508 µm) in package; eliminates external Hall IC and associated layout complexity. |
| OTP-programmable configuration | Two-time programmable registers define SUCL, RPMS range, FG frequency multiplier (1x/0.5x/2x), and THETA_E delay - enabling factory-tuned fan behavior. |
Applications
| CPU Fan Control | Server Chassis Cooling |
|---|---|
|
Use Scenario: Regulating airflow in x86-based server CPUs with dynamic thermal load. IC Role / Device Role / Timing Role: Single-phase BLDC driver with Hall-based commutation and FG tach feedback to BMC or host controller. Use Value: Enables precise RPM control matching thermal demand, reducing acoustic noise by 8–12 dB(A) versus fixed-speed fans. |
Use Scenario: Managing redundant cooling zones in 1U/2U rack-mount servers. IC Role / Device Role / Timing Role: Motor driver with rotor lock fault reporting (RD) and auto-recovery to maintain N+1 cooling integrity. Use Value: Eliminates need for external watchdog circuitry; RD signal directly triggers fan replacement alerts in IPMI firmware. |
| Embedded Industrial Fan | Network Equipment Thermal Management |
|
Use Scenario: Active cooling in sealed industrial PCs operating at -40°C to +125°C ambient. IC Role / Device Role / Timing Role: High-reliability motor controller with UVLO, OVP, and thermal shutdown protecting against brownouts and overloads. Use Value: Maintains fan operation across wide input range (3.3 V–18 V); reverse-voltage protection prevents damage during field wiring errors. |
Use Scenario: Silent cooling for 5G baseband units and optical line terminals requiring low EMI. IC Role / Device Role / Timing Role: 26 kHz fixed-frequency driver minimizing conducted emissions into sensitive RF sections. Use Value: Soft-switching transitions reduce dv/dt-induced noise; eliminates need for external snubbers in most deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-phase BLDC motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP6515GJS-Z | Lacks integrated Hall sensor; requires external Hall IC and additional PCB area. | Suitable only where space allows external sensing and cost sensitivity favors lower BOM count over integration. | Select only if Hall sensor placement flexibility is required or OTP programming capability is unnecessary. |
| DRV10970PWP | Higher 2.5 A current capability but no reverse-voltage protection; uses HTSSOP-20 package (larger footprint). | Better suited for higher-power blowers; lacks RVP and soft-transition tuning, increasing audible noise risk. | Choose when >1.2 A drive is mandatory and board space permits larger package; not drop-in compatible. |
Compared with MP6517GJS-XXXX-Z, MP6515GJS-Z sacrifices Hall integration and programmability for lower unit cost, while DRV10970PWP trades reverse-protection and acoustic optimization for raw current headroom - making MP6517GJS-XXXX-Z optimal for space-constrained, low-noise CPU fan designs requiring factory-programmed behavior.
Availability
MP6517GJS-XXXX-Z is available at Aetrix Electronics and suitable for CPU fan control, server chassis cooling, embedded industrial fan systems, and network equipment thermal management requiring stable component supply and long-term lifecycle support.
Supply support for MP6517GJS-XXXX-Z 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
Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance analog and power ICs, with design centers across Asia and North America.
The MP6517 product line targets intelligent, low-noise fan control in computing and communications infrastructure, emphasizing integration (Hall sensor + MOSFETs + protection), programmability, and thermal robustness in ultra-compact packages.
FAQ
What is the function of the FG/RD pin, and how is it configured?
The FG/RD pin is a multi-function open-drain output that can report either fan speed (FG mode) or rotor lock fault (RD mode), selected via OTP register FGRD[1:0]. In FG mode, it outputs pulses at 1×, 0.5×, or 2× the Hall sensor frequency; in RD mode, it pulls low for 3 Hall edges after lock release. A pull-up resistor (typically 4.7 kΩ to 5 V) is required for proper logic-level translation.
How does the soft on/off phase transition reduce audible noise?
Soft on/off adjusts the electrical conduction angle during startup and shutdown using programmable parameters (SON_100, SOFF_100). By ramping duty cycle over 16 steps instead of abrupt switching, it eliminates sudden torque transients that excite mechanical resonance in fan blades and mounts - reducing broadband acoustic noise by up to 12 dB(A) in typical 12 V CPU fan applications.
Can the MP6517GJS-XXXX-Z operate without external components beyond the input capacitor?
Yes - the MP6517GJS-XXXX-Z requires only one external input capacitor (1–10 µF ceramic) for stable operation. All critical functions - Hall sensing, MOSFET drive, PWM decoding, protection logic, and speed feedback - are fully integrated. Optional components (Zener clamp, RC snubber, PWM series resistor) address edge-case EMI or overvoltage conditions but are not needed for baseline functionality.
What is the significance of the "XXXX" in the part number MP6517GJS-XXXX-Z?
The "XXXX" represents a 4-digit hexadecimal configuration code programmed into the device's OTP memory, defining register defaults such as SUCL current limit, RPM range (RPMS), FG frequency multiplier, and soft-switching angles. Each unique code corresponds to a specific fan behavior profile; "0000" is the factory-default setting, and custom codes require collaboration with an MPS FAE.
How does rotor deadlock protection recover after a stall event?
Upon detecting no Hall edge change for 0.6 s, the MP6517GJS-XXXX-Z disables all MOSFETs and asserts RD. After a configurable recovery interval (1.8 s, 2.4 s, 3.0 s, or 3.6 s set by RLOCK_SEL bits), it attempts automatic restart. RD remains asserted until three valid Hall edges are detected post-recovery, ensuring reliable re-synchronization before resuming full drive.
Is the TSOT23-6-SL package compatible with standard TSOT23-6 footprints?
No - the TSOT23-6-SL has wettable flanks and slightly modified pad geometry versus standard TSOT23-6. While pinout matches (GND-VCC-FG/RD-PWM-OUT2-OUT1), solder paste stencil design and reflow profile must account for SL-specific thermal mass and side-wall wetting requirements to ensure IPC-A-610 Class 2 reliability and AOI compatibility.
Does the MP6517GJS-XXXX-Z support I²C communication in normal operation?
No - I²C functionality (SCL/SDA on FG/RD and PWM pins) is only active in test mode, entered by applying a negative voltage pulse to PWM during power-up. Normal operation uses dedicated PWM and FG/RD signals; register read/write outside test mode is not supported, preserving deterministic real-time motor control.
MP6517GJS-XXXX-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- *
- Package/Case:
- SOT-23-6 Thin, Flat Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Motor Type - Stepper:
- -
- Motor Type - AC, DC:
- -
- Function:
- -
- Output Configuration:
- -
- Interface:
- -
- Technology:
- -
- Step Resolution:
- -
- Applications:
- -
- Current - Output:
- -
- Voltage - Supply:
- -
- Voltage - Load:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6-SL
MP6517GJS-XXXX-Z FAQ
1.How can I place an order for MP6517GJS-XXXX-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP6517GJS-XXXX-Z 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 MP6517GJS-XXXX-Z reliable?
The price and inventory of MP6517GJS-XXXX-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP6517GJS-XXXX-Z is usually 5 days.
3.What payment methods are accepted for MP6517GJS-XXXX-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP6517GJS-XXXX-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP6517GJS-XXXX-Z?
MP6517GJS-XXXX-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP6517GJS-XXXX-Z 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 MP6517GJS-XXXX-Z?
For technical support, including MP6517GJS-XXXX-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP6517GJS-XXXX-Z requirements.
6.How does Aetrix verify that MP6517GJS-XXXX-Z is sourced from the original manufacturer or authorized distributors?
All MP6517GJS-XXXX-Z 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 MP6517GJS-XXXX-Z meets industry standards.
7.What is the process for return or replacement of MP6517GJS-XXXX-Z?
All MP6517GJS-XXXX-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP6517GJS-XXXX-Z, 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 MP6517GJS-XXXX-Z part is unused and in its original packaging.
Return procedure for MP6517GJS-XXXX-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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