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Microchip Technology EMC2102-DZK
- Part No.:
- EMC2102-DZK
- Manufacturer:
- Microchip Technology
- Category:
- Thermal Management
- Package:
- 28-VFQFN Exposed Pad
- Datasheet:
-
EMC2102-DZK.pdf
- Description:
- IC RPM FAN CTRLR 28VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,834
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Product details
Overview
EMC2102-DZK from SMSC is an SMBus-compatible, closed-loop RPM-based fan controller with integrated 600mA linear high-side fan driver, hardware thermal shutdown (SYS_SHDN#), and triple remote temperature monitoring via diode-connected transistors or CPU thermal diodes. It operates from a 3.0–3.6V supply with separate 5V fan drive rail, supports 45nm/65nm/90nm CPU diodes, and delivers ±1°C accuracy across 60–100°C for notebook and desktop thermal management.
For engineers reviewing the EMC2102-DZK datasheet, EMC2102-DZK pinout, EMC2102-DZK application, or EMC2102-DZK equivalent, this device is selected for precise RPM-regulated cooling in space-constrained embedded systems where deterministic hardware thermal shutdown-configurable in 1°C increments via TRIP_SET-and 5V power-good reset generation are required.
Technical Context
The EMC2102-DZK implements Beta Compensation and Resistance Error Correction (REC) to maintain ±1°C accuracy across process variations and PCB trace resistance up to 100Ω on three independent diode channels. Its closed-loop RPM control algorithm accepts external 32.768kHz clock input for 2% speed accuracy and includes stall detection, spin-up routine, and programmable TACH target tracking.
Hardware thermal shutdown is implemented as a standalone analog block tied to SHDN_SEL strapping and TRIP_SET resistor divider, operating independently of firmware and SMBus interface. The 5V reset generator on RESET# asserts low at 4.5V VDD_5V with 100mV hysteresis and 220ms delay, while SYS_SHDN# provides active-low critical system shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.0–3.6V for logic core; 4.6–5.5V for fan driver - enables dual-rail operation with isolated noise-sensitive analog sections |
| Fan Drive Capability | 600mA continuous sourcing - sufficient for medium-power 5V DC fans without external MOSFETs |
| Temperature Accuracy | ±1°C (60–100°C range) - validated for CPU substrate diodes and discrete BJT diodes using REC and Beta Compensation |
| RPM Control Accuracy | 2% with external 32.768kHz clock - eliminates crystal tolerance drift in closed-loop speed regulation |
| Hardware Shutdown Resolution | 1°C incremental setting via TRIP_SET voltage divider - allows precise, software-independent thermal trip points |
| Reset Threshold | 4.5V VDD_5V with 100mV hysteresis - ensures clean power-on reset sequencing for 5V peripherals |
| Package | 28-pin, 5×5mm QFN, lead-free RoHS-compliant - thermally enhanced layout with exposed pad for efficient heat dissipation |
Pinout & Package
EMC2102-DZK is housed in a thermally enhanced, lead-free, RoHS-compliant 28-pin QFN package measuring 5×5mm with exposed thermal pad. Pin 1 is located at top-left per standard QFN orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_3V (Pin 1) | 3.3V logic supply input | Power rail for internal logic, ADC, SMBus interface - must be decoupled near package |
| DN1–DN3 / DP1–DP3 (Pins 2–7) | Three differential diode channel inputs | Accept cathode/anode pairs from CPU/GPU thermal diodes or discrete transistors - enable REC and Beta Compensation |
| TRIP_SET (Pin 11) | Analog voltage input for HW shutdown threshold | Resistor divider sets thermal trip point in 1°C steps - no software dependency or timing uncertainty |
| SYS_SHDN# (Pin 12) | Active-low hardware thermal shutdown output | Directly drives motherboard power sequencer or PMIC - asserted when any monitored zone exceeds TRIP_SET |
| FAN (Pins 25–26) | High-side linear fan drive outputs | Paralleled pins source up to 600mA total - connect directly to fan anode; cathode to GND |
| TACH (Pin 28) | Fan tachometer input | Measures fan RPM via pulse counting - supports 2k/500 RPM ranges with configurable valid edge count |
| RESET# (Pin 16) | 5V supply power-good reset output | Asserts low during VDD_5V ramp-up below 4.5V - provides synchronized reset to system controllers |
Key Features
| Feature | Design Value |
|---|---|
| Beta Compensation + REC | Enables ±1°C accuracy across 45nm–90nm CPU diodes and discrete BJTs by modeling transistor physics and canceling PCB trace resistance error |
| Closed-loop RPM control | Software-configurable target RPM with stall detection, spin-up ramp, and 2% accuracy using external 32.768kHz reference |
| Standalone HW thermal shutdown | Dedicated analog circuitry with TRIP_SET and SHDN_SEL - immune to firmware crash, SMBus lockup, or supply brownout |
| 5V reset generator | Guaranteed 220ms reset pulse with 4.5V threshold and 100mV hysteresis - meets Intel VRD/ATX power sequencing requirements |
| Triple remote temperature sensing | Simultaneous monitoring of CPU, GPU, and chipset zones via dedicated DP/DN pairs - no multiplexing latency or crosstalk |
Applications
| Notebook Thermal Management | Desktop Motherboard Power Sequencing |
|---|---|
Use Scenario: Real-time CPU/GPU temperature monitoring and adaptive fan speed control in ultra-thin notebooks with limited airflow. IC Role / Device Role / Timing Role: Primary RPM-based fan controller with hardware thermal shutdown - acts as autonomous thermal safety layer independent of OS or EC firmware. Use Value: Prevents thermal throttling and system shutdown by maintaining CPU junction ≤95°C under sustained load, using ±1°C diode accuracy and 2% RPM regulation. |
Use Scenario: Coordinating 5V rail power-good assertion and critical thermal shutdown on ATX-compliant desktop motherboards. IC Role / Device Role / Timing Role: Dual-function device providing RESET# for BIOS initialization and SYS_SHDN# for immediate power cutoff during overtemperature events. Use Value: Eliminates need for discrete reset IC and thermal supervisor - reduces BOM count while ensuring deterministic response within 100µs of TRIP_SET threshold breach. |
| Embedded Industrial Controller Cooling | Server Blade Fan Control Module |
Use Scenario: Fan speed regulation in fanless-optional industrial PCs where ambient temperature varies from -20°C to 70°C. IC Role / Device Role / Timing Role: Triple-zone temperature monitor and linear fan driver - interfaces with legacy SMBus host controllers without requiring PCIe or complex drivers. Use Value: Maintains stable 3000–8000 RPM range across wide temperature gradients using REC to compensate for PCB trace resistance drift. |
Use Scenario: Distributed thermal management across multi-fan server blades with centralized SMBus master control. IC Role / Device Role / Timing Role: Per-blade RPM controller with local hardware shutdown - enables blade-level thermal isolation without backplane communication dependency. Use Value: Allows individual blade shutdown during localized overheating (e.g., failed heatsink), preserving uptime of remaining blades in the chassis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RPM-based fan control applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| EMC2101-DZK | Single remote temperature channel; no REC or Beta Compensation; 300mA fan drive | Limited to basic CPU-only monitoring; insufficient for multi-zone or high-accuracy AMD/Intel diode support | Select only when cost sensitivity outweighs accuracy and channel count requirements |
| ADM1032ARMZ-REEL | No integrated fan driver; SMBus-only temperature monitor with alert output; ±2°C accuracy | Requires external fan controller/MOSFET; lacks hardware shutdown and RPM feedback loop | Choose when fan control is handled elsewhere and only precision remote sensing is needed |
Compared with EMC2101-DZK, the EMC2102-DZK adds two extra diode channels, REC/Beta Compensation, and 600mA drive - enabling full thermal autonomy in compact designs. Versus ADM1032ARMZ-REEL, it integrates control, drive, and deterministic shutdown - reducing component count and failure modes in thermally critical systems.
Availability
EMC2102-DZK is available at Aetrix Electronics and suitable for notebook computers, desktop motherboards, and embedded industrial controllers requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.
Supply support for EMC2102-DZK 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
SMSC (Standard Microsystems Corporation) was a fabless semiconductor company specializing in connectivity, timing, and system management ICs before its acquisition by Microchip Technology in 2012. Its legacy products remain widely deployed in computing infrastructure.
The EMC2102-DZK belongs to SMSC's thermal management product line, designed specifically for x86 platform cooling subsystems where deterministic hardware shutdown, multi-diode accuracy, and integrated fan drive reduce design complexity and improve system reliability.
FAQ
What is the maximum fan RPM supported by the EMC2102-DZK?
The EMC2102-DZK supports fans operating up to 16,000 RPM. Its TACH input and RPM-based control algorithm are calibrated for accurate measurement and regulation across this full range, including low-speed operation down to 500 RPM using the dedicated 500-range TACH table in the datasheet.
Does the EMC2102-DZK require an external clock for accurate RPM control?
The EMC2102-DZK achieves 2% RPM accuracy only when using an external 32.768kHz clock applied to CLK_IN (Pin 18). Its internal oscillator provides lower accuracy; for applications demanding tight speed regulation - such as acoustic noise control in premium notebooks - the external clock is mandatory.
Can the hardware thermal shutdown function of the EMC2102-DZK be disabled in software?
No. The hardware thermal shutdown block in the EMC2102-DZK is fully autonomous and cannot be disabled by software or SMBus commands. It responds solely to the analog voltage on TRIP_SET and strapping on SHDN_SEL, ensuring fail-safe operation even during firmware crashes or communication failures.
What is the purpose of the N/C pins on the EMC2102-DZK?
Pins 8, 15, and 21 on the EMC2102-DZK are marked N/C (Not Connected) in the datasheet and have no internal connection. They must remain unconnected on the PCB - routing traces or applying pull-ups/pull-downs to these pins may cause unintended behavior or violate thermal pad soldering requirements.
How does the EMC2102-DZK handle series resistance in thermal diode traces?
The EMC2102-DZK applies Resistance Error Correction (REC) to all three diode channels, compensating for up to 100Ω of series resistance in DP/DN PCB traces. This correction eliminates temperature offset caused by trace resistance, maintaining ±1°C accuracy without requiring matched-length routing or specialized layout techniques.
EMC2102-DZK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 28-VFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Obsolete
- Function:
- Fan Control, Temp Monitor
- Sensor Type:
- Internal and External
- Sensing Temperature:
- 0°C ~ 191°C
- Accuracy:
- ±3°C(Max)
- Topology:
- ADC (Sigma Delta), Multiplexer, Register Bank
- Output Type:
- 2-Wire SMBus
- Output Alarm:
- Yes
- Output Fan:
- Yes
- Voltage - Supply:
- 3V ~ 5.5V
- Operating Temperature:
- 0°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-QFN (5x5)
EMC2102-DZK FAQ
1.How can I place an order for EMC2102-DZK through Aetrix?
Please submit a Request for Quotation (RFQ) for EMC2102-DZK 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 EMC2102-DZK reliable?
The price and inventory of EMC2102-DZK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EMC2102-DZK is usually 5 days.
3.What payment methods are accepted for EMC2102-DZK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EMC2102-DZK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EMC2102-DZK?
EMC2102-DZK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EMC2102-DZK 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 EMC2102-DZK?
For technical support, including EMC2102-DZK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EMC2102-DZK requirements.
6.How does Aetrix verify that EMC2102-DZK is sourced from the original manufacturer or authorized distributors?
All EMC2102-DZK 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 EMC2102-DZK meets industry standards.
7.What is the process for return or replacement of EMC2102-DZK?
All EMC2102-DZK units undergo pre-shipment inspection (PSI). If there is an issue with EMC2102-DZK, 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 EMC2102-DZK part is unused and in its original packaging.
Return procedure for EMC2102-DZK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
EMC2102-DZK Tags
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