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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Thermal Management

Microchip Technology EMC2113-1-AP-TR

Name: EMC2113-1-AP-TR
Brand: Microchip Technology
SKU: EMC2113-1-AP-TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: EMC2113-1-AP-TR

Manufacturer:: Microchip Technology

Category:: Thermal Management

Package:: 16-VQFN Exposed Pad

Datasheet:: EMC2113-1-AP-TR.pdf

Description:: IC RPM FAN CTRLR 16QFN

Quantity:: RFQ Add To RFQ list

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Product details

Overview

EMC2113-1-AP-TR from Microchip Technology is an SMBus 2.0–compliant RPM-based fan controller with integrated temperature monitoring for up to three external diodes and one internal sensor. It delivers ±1°C accuracy (external), 0.125°C resolution, hardware-programmable thermal shutdown (65°C–127°C), and supports both high- and low-frequency PWM fan drive for 4-wire fans in notebook, graphics card, and industrial cooling systems.

For engineers reviewing the EMC2113-1-AP-TR datasheet, EMC2113-1-AP-TR pinout, EMC2113-1-AP-TR application, or EMC2113-1-AP-TR equivalent, this device is selected for precise closed-loop fan speed control using tachometer feedback, multi-zone temperature lookup tables, and fail-safe hardware thermal shutdown-critical for thermally constrained embedded platforms requiring deterministic response to overtemperature events.

Technical Context

The EMC2113-1-AP-TR implements a dual-mode fan control architecture: RPM-based feedback loop with 2% accuracy across 500–16k RPM, and direct PWM drive with programmable base frequency (25 kHz or 100 kHz). Its temperature subsystem applies resistance error correction and beta compensation to substrate diodes, enabling stable 1°C accuracy from 60°C to 125°C despite process variation in CPU/GPU thermal diodes.

Hardware thermal shutdown is implemented via dedicated SYS_SHDN pin driven by TRIP_SET resistor configuration (65°C–127°C range), independent of firmware. The device uses SMBus Alert protocol and open-drain ALERT pin to flag fan stall, invalid drive, or temperature limit violations without host polling overhead.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	3.3 V nominal - powers entire IC including PWM driver and analog front-end; no level-shifting required in 3.3V system domains.
Fan Speed Accuracy	±2% from 500–16,000 RPM - enables precise acoustic/thermal trade-off tuning without calibration per unit.
Temp Resolution	0.125°C - supports fine-grained thermal zoning and smooth LUT-based fan ramping with minimal step artifacts.
External Temp Channels	3 diode inputs - monitors CPU, GPU, and VRM hotspots simultaneously with dedicated high/low limits per channel.
Hardware Shutdown Range	65°C–127°C via TRIP_SET resistor - provides immutable, fail-safe system power-down path unaffected by software corruption.
SMBus Interface	SMBus 2.0 compliant with Block Read/Write and Alert Response - enables efficient register access and interrupt-driven fault reporting in server/notebook management buses.
Package	16-pin 4 mm × 4 mm QFN, RoHS-compliant - surface-mount footprint compatible with high-density PCB layouts and automated assembly.

Pinout & Package

EMC2113-1-AP-TR is housed in a 16-pin, 4 mm × 4 mm QFN package with exposed thermal pad (RoHS-compliant). Pin 1 marked by dot; pin numbering follows standard counter-clockwise convention from top-left corner.

Pin/Terminal	Circuit Role	Design Meaning
VDD	Power supply input	3.3 V main supply; decoupling capacitor required at pin for PWM driver stability.
GND	Ground reference	Common return for analog/digital circuits and thermal pad connection point.
SCL	SMBus clock input	Open-drain input; requires external pull-up to 3.3 V; supports up to 100 kHz standard mode.
SDA	SMBus data I/O	Open-drain bidirectional line; shares same pull-up as SCL; handles all register reads/writes and alerts.
ALERT	Open-drain interrupt output	Active-low flag for temperature faults, fan errors, or critical shutdown initiation; wired-OR compatible.
SYS_SHDN	Hardware shutdown output	Active-low, open-drain signal driving external power sequencer or reset controller upon TRIP_SET threshold breach.
TRIP_SET	Shutdown trip-point programming	Analog input biased by external resistor divider; sets immutable hardware thermal shutdown temperature (65°C–127°C).
SHDN_SEL	Shutdown source select	Digital input selecting between internal temp channel or external diode for SYS_SHDN activation logic.
FAN_TACH	Tachometer input	Edge-sensitive input capturing fan RPM via two-pulse-per-revolution signal; supports stalled-fan detection.
FAN_PWM	PWM fan drive output	Push-pull output capable of driving 4-wire fan PWM input directly; supports 25 kHz or 100 kHz base frequency.

Key Features

Feature	Design Value
RPM-based fan control algorithm	2% speed accuracy from 500–16k RPM with automatic tach feedback - eliminates need for manual PWM-to-RPM mapping tables.
8-step temperature lookup table (LUT)	Supports up to four concurrent temperature zones; enables fan speed to respond to weighted composite thermal conditions.
Resistance error correction & beta compensation	Corrects series resistance and ideality factor drift in processor thermal diodes - maintains ±1°C accuracy across 90nm–45nm CPUs.
Hardware thermal shutdown	Immutable 65°C–127°C trip point set by TRIP_SET resistor - guarantees safe shutdown even during firmware failure or bus lockup.
Stalled fan and aging detection	Monitors tach pulse validity and edge timing deviations - flags mechanical degradation before thermal runaway occurs.

Applications

Notebook Thermal Management	Graphics Card Cooling Control
Use Scenario: Dynamic fan speed adjustment based on CPU/GPU die temperature during variable workloads (e.g., video encoding, gaming). IC Role / Device Role / Timing Role: Primary fan controller interfacing with Intel/AMD processor thermal diodes and 4-wire PWM fans. Use Value: Maintains acoustic comfort while preventing thermal throttling via real-time RPM feedback and hardware shutdown backup.	Use Scenario: Multi-zone thermal regulation on discrete GPU boards with VRM, memory, and GPU junction sensors. IC Role / Device Role / Timing Role: Centralized temperature monitor and fan actuator coordinating cooling across three external diodes and internal sensor. Use Value: Enables zone-specific fan response curves using LUT, reducing fan noise during light loads while ensuring rapid ramp-up under GPU stress.
Industrial Embedded Systems	Network Equipment Thermal Safety
Use Scenario: Fan control in fan-cooled industrial controllers operating continuously at elevated ambient temperatures (60°C+). IC Role / Device Role / Timing Role: Fault-tolerant thermal supervisor with hardware shutdown and resistance error correction for long-term reliability. Use Value: Prevents field failures due to thermal diode drift or fan wear through aging detection and immutable shutdown threshold.	Use Scenario: Thermal monitoring and forced cooling in 1U rack-mounted switches/routers with limited airflow and high-power ASICs. IC Role / Device Role / Timing Role: SMBus-connected thermal manager feeding temperature data to system management controller and driving local fans. Use Value: Reduces system-level thermal design margin by delivering ±1°C accuracy and alert-driven fault reporting over shared management bus.

Notebook Thermal Management

Graphics Card Cooling Control

Use Scenario: Dynamic fan speed adjustment based on CPU/GPU die temperature during variable workloads (e.g., video encoding, gaming).

IC Role / Device Role / Timing Role: Primary fan controller interfacing with Intel/AMD processor thermal diodes and 4-wire PWM fans.

Use Value: Maintains acoustic comfort while preventing thermal throttling via real-time RPM feedback and hardware shutdown backup.

Use Scenario: Multi-zone thermal regulation on discrete GPU boards with VRM, memory, and GPU junction sensors.

IC Role / Device Role / Timing Role: Centralized temperature monitor and fan actuator coordinating cooling across three external diodes and internal sensor.

Use Value: Enables zone-specific fan response curves using LUT, reducing fan noise during light loads while ensuring rapid ramp-up under GPU stress.

Industrial Embedded Systems

Network Equipment Thermal Safety

Use Scenario: Fan control in fan-cooled industrial controllers operating continuously at elevated ambient temperatures (60°C+).

IC Role / Device Role / Timing Role: Fault-tolerant thermal supervisor with hardware shutdown and resistance error correction for long-term reliability.

Use Value: Prevents field failures due to thermal diode drift or fan wear through aging detection and immutable shutdown threshold.

Use Scenario: Thermal monitoring and forced cooling in 1U rack-mounted switches/routers with limited airflow and high-power ASICs.

IC Role / Device Role / Timing Role: SMBus-connected thermal manager feeding temperature data to system management controller and driving local fans.

Use Value: Reduces system-level thermal design margin by delivering ±1°C accuracy and alert-driven fault reporting over shared management bus.

Equivalent & Alternatives

The following parts are listed as comparable options for similar fan controller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
EMC2103-2-AP-TR	Lacks hardware thermal shutdown pin (SYS_SHDN); uses software-only critical limit; identical LUT and tach accuracy.	Suitable where firmware-controlled shutdown is acceptable and external sequencer integration is not required.	Select EMC2113-1-AP-TR when fail-safe hardware shutdown is mandated for safety-critical or unattended operation.
ADM1032ARMZ-REEL	Single-channel temperature monitor only; no fan control, no PWM output, no tach input; SMBus interface only.	Applicable only for passive thermal monitoring where fan actuation is handled externally.	Choose EMC2113-1-AP-TR when integrated RPM-based fan control with hardware safety features is required.

Compared with EMC2103-2-AP-TR and ADM1032ARMZ-REEL, the EMC2113-1-AP-TR uniquely combines precise RPM feedback, multi-diode monitoring, and immutable hardware shutdown in a single 4 mm × 4 mm QFN - eliminating external logic for safety-critical thermal management.

Availability

EMC2113-1-AP-TR is available at Aetrix Electronics and suitable for notebook computers, graphics cards, and industrial embedded systems requiring stable component supply, long-lifecycle support, and RoHS-compliant thermal management ICs.

Supply support for EMC2113-1-AP-TR 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

Microchip Technology Inc. is a leading provider of microcontrollers, analog components, and timing solutions, serving automotive, industrial, communications, and consumer markets with high-reliability silicon and development tools.

The EMC2113 belongs to Microchip's thermal management IC product line, designed specifically for intelligent, self-contained fan control in space-constrained platforms where deterministic thermal response and hardware-enforced safety are essential.

FAQ

What is the primary function of the EMC2113-1-AP-TR?

The EMC2113-1-AP-TR is a dedicated RPM-based fan controller with integrated temperature monitoring. Its core function is to regulate 4-wire fan speed using real-time tachometer feedback while monitoring up to three external thermal diodes and its internal sensor. The EMC2113-1-AP-TR implements hardware thermal shutdown via SYS_SHDN and supports programmable lookup tables for multi-zone thermal response - making it ideal for notebooks, GPUs, and industrial controllers.

How does the EMC2113-1-AP-TR achieve ±1°C temperature accuracy across external diodes?

The EMC2113-1-AP-TR achieves ±1°C accuracy (60°C–125°C) for external diodes using resistance error correction and beta compensation algorithms that dynamically adjust for series resistance and ideality factor variation in substrate thermal diodes. These corrections are applied per measurement cycle and validated for 90nm–45nm Intel CPUs. The EMC2113-1-AP-TR also employs digital averaging and dynamic averaging to suppress noise without sacrificing response time.

Can the EMC2113-1-AP-TR drive both high- and low-frequency PWM fans?

Yes, the EMC2113-1-AP-TR supports both high- and low-frequency PWM fan drive modes. Its FAN_PWM output is configurable for either 25 kHz or 100 kHz base frequency via the PWM Driver Base Frequency Register. This allows compatibility with fans specifying different PWM frequency requirements - such as quiet low-frequency operation or EMI-optimized high-frequency drive - without external circuitry. The EMC2113-1-AP-TR maintains full RPM feedback and control integrity in both modes.

What role does the TRIP_SET pin play in the EMC2113-1-AP-TR's thermal safety architecture?

The TRIP_SET pin on the EMC2113-1-AP-TR accepts an external resistor divider to set a fixed, hardware-enforced thermal shutdown temperature between 65°C and 127°C. This value cannot be altered by software or SMBus commands. When the selected temperature channel exceeds this threshold, the dedicated SYS_SHDN pin asserts active-low to trigger external power sequencing or system reset - providing fail-safe protection independent of firmware state. This ensures the EMC2113-1-AP-TR meets functional safety requirements in unattended systems.

Does the EMC2113-1-AP-TR support SMBus Alert functionality?

Yes, the EMC2113-1-AP-TR fully supports SMBus Alert protocol. Its open-drain ALERT pin signals temperature limit breaches, fan stall, invalid drive, or critical shutdown events without requiring host polling. When asserted, the host performs an Alert Response Address (ARA) read to identify the interrupting device and then reads the Interrupt Status Register to determine root cause. This reduces bus traffic and latency in multi-device thermal management systems - a key capability confirmed in the EMC2113-1-AP-TR datasheet Section 5.2.7 and Table 5.9.

EMC2113-1-AP-TR Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: 16-VQFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Function:: Fan Control, Temp Monitor

Sensor Type:: Internal and External

Sensing Temperature:: -

Accuracy:: ±1°C

Topology:: ADC (Sigma Delta), Multiplexer, Register Bank

Output Type:: SMBus

Output Alarm:: Yes

Output Fan:: Yes

Voltage - Supply:: 3.3V

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-QFN (4x4)

EMC2113-1-AP-TR FAQ

1.How can I place an order for EMC2113-1-AP-TR through Aetrix?

Please submit a Request for Quotation (RFQ) for EMC2113-1-AP-TR 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 EMC2113-1-AP-TR reliable?

The price and inventory of EMC2113-1-AP-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EMC2113-1-AP-TR is usually 5 days.

3.What payment methods are accepted for EMC2113-1-AP-TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EMC2113-1-AP-TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for EMC2113-1-AP-TR?

EMC2113-1-AP-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your EMC2113-1-AP-TR 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 EMC2113-1-AP-TR?

For technical support, including EMC2113-1-AP-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EMC2113-1-AP-TR requirements.

6.How does Aetrix verify that EMC2113-1-AP-TR is sourced from the original manufacturer or authorized distributors?

All EMC2113-1-AP-TR 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 EMC2113-1-AP-TR meets industry standards.

7.What is the process for return or replacement of EMC2113-1-AP-TR?

All EMC2113-1-AP-TR units undergo pre-shipment inspection (PSI). If there is an issue with EMC2113-1-AP-TR, 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 EMC2113-1-AP-TR part is unused and in its original packaging.

Return procedure for EMC2113-1-AP-TR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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