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Microchip Technology MCP19114T-E/MQ
- Part No.:
- MCP19114T-E/MQ
- Manufacturer:
- Microchip Technology
- Category:
- DC DC Switching Controllers
- Package:
- 28-VFQFN Exposed Pad
- Datasheet:
-
MCP19114T-E/MQ.pdf
- Description:
- IC REG CTRLR MULT TOP I2C 28QFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MCP19114T-E/MQ from Microchip Technology is a digitally enhanced, mixed-signal synchronous low-side PWM controller with integrated 8-bit PIC® microcontroller core, designed for high-efficiency DC-DC power conversion in LED lighting, battery chargers, and industrial power supplies. It supports flyback, boost, SEPIC, and Ćuk topologies; operates from 4.5V to 42V input; delivers 1A gate drive at 10V VDR; and features peak current mode control with ±5% current regulation and AEC-Q100 qualification.
For engineers reviewing the MCP19114T-E/MQ datasheet, MCP19114T-E/MQ pinout, MCP19114T-E/MQ application, or MCP19114T-E/MQ equivalent, key selection criteria include programmable dead time (16–256 ns), quasi-resonant operation capability, differential remote output sensing, integrated 10-bit ADC with five channels, and dual low-side gate drivers supporting bidirectional power flow in battery systems.
Technical Context
The MCP19114T-E/MQ integrates an analog PWM controller (similar to MCP1631) with a PIC12F617-compatible microcontroller core, enabling real-time digital configuration of protection thresholds, startup profiles, and fault responses via I²C or ICSP™. Its architecture combines analog loop stability with firmware-defined flexibility - including programmable leading edge blanking (0/50/100/200 ns), 6-bit slope compensation, and selectable fixed-frequency range (31.25 kHz–2.0 MHz).
It implements dual independent low-side gate drivers (PDRV/SDRV) with configurable dead time and two LDOs: a 5V LDO (VDD) for digital logic and gate drive, and a 4V LDO (AVDD) for analog circuitry. The device uses differential current sense amplification (ISP/ISN), DESAT detection (DESATP/DESATN), and error amplifier feedback (IFB/ICOMP) to support precise current-mode control in isolated and non-isolated topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 42V - supports automotive battery systems (12V/24V nominal) and industrial DC inputs without external pre-regulation. |
| Gate Drive Capability | 1A sink/source at 10V VDR - enables direct driving of medium-power MOSFETs in high-current flyback or boost stages. |
| Switching Frequency Range | 31.25 kHz to 2.0 MHz - allows optimization for EMI, efficiency, and magnetics size across diverse power levels. |
| Current Regulation Accuracy | ±5% - ensures stable LED current or battery charge current under varying load and temperature conditions. |
| ADC Resolution & Channels | 10-bit, 5 external channels - provides sufficient resolution for closed-loop voltage/current sensing, thermal monitoring, and dimming feedback. |
| Quiescent Current | 5 mA typical - minimizes no-load power loss in always-on applications like smart lighting controllers. |
| Sleep Current | 30 µA typical - enables ultra-low-power standby modes for energy-sensitive battery-powered systems. |
| AEC-Q100 Grade | Qualified - meets automotive reliability requirements for under-hood and infotainment power supply applications. |
Pinout & Package
Package: 24-pin 4 mm × 4 mm QFN (MCP19114T-E/MQ). Exposed thermal pad (pin 24 is GPB1/AN4/VREF2; thermal pad is not electrically connected but must be soldered to PCB ground for thermal performance).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Primary input supply | Accepts 4.5V–42V unregulated DC; powers internal LDOs and gate drive circuitry. |
| VDD | 5V LDO output | Supplies microcontroller core, digital logic, and optionally gate drive (with external RC filter to VDR). |
| VDR | Gate drive supply rail | Accepts 5V (from VDD) or 10V (via TC1240 doubler); sets gate drive voltage level and UVLO threshold (2.7V/5.4V). |
| PDRV / SDRV | Low-side MOSFET gate outputs | Independent 1A drivers for primary and secondary switches; enable bidirectional power flow in battery systems. |
| ISP / ISN | Secondary current sense inputs | Differential inputs to integrated current sense amplifier; used for secondary-side current regulation in flyback/SEPIC. |
| DESATP / DESATN | Desaturation detection inputs | Enable quasi-resonant zero-voltage switching (ZVS) by detecting transformer demagnetization timing. |
| VS / IFB / ICOMP | Output voltage sensing & error amplification | VS feeds overvoltage comparator; IFB is EA input; ICOMP is EA output - forms analog voltage control loop. |
| GPA0–GPA7, GPB0–GPB1 | Configurable GPIO/ADC/I²C | Eight I/O pins (two open-drain), five ADC channels, I²C (SCL/SDA), ICSP™ programming, and interrupt-on-change capability. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable dead time | 16–256 ns in discrete steps - prevents shoot-through in synchronous rectification while maintaining ZVS timing margin. |
| Dual low-side gate drivers | 1A sink/source at 10V - eliminates need for external driver stages in ≤100W converters, reducing BOM count and layout area. |
| Integrated differential current sense amp | ±5% current regulation accuracy - enables precise constant-current LED drivers and battery charge control without external op-amps. |
| Quasi-resonant support | Built-in DESAT comparator with programmable offset - synchronizes switching to transformer reset point, improving efficiency and reducing EMI in flyback designs. |
| Configurable UVLO/OVLO | Independent input undervoltage/overvoltage lockout - protects system during brownout or surge events without external supervisor ICs. |
| On-chip 8 MHz oscillator | Factory-calibrated to ±1% - eliminates external crystal/capacitor, reducing cost and board space while ensuring reliable timing for PWM and firmware execution. |
Applications
| LED Lighting Driver | Battery Charger Controller |
|---|---|
Use Scenario: Constant-current dimmable LED driver for automotive headlamps or industrial high-bay fixtures. IC Role / Device Role / Timing Role: Primary PWM controller and digital supervisor - regulates LED current via secondary-side sensing, implements PWM/dimming logic, and manages thermal foldback. Use Value: Enables single-chip solution for Class D LED drivers with <1% current ripple, AEC-Q100 compliance, and adaptive dimming response using on-chip ADC and GPIO. | Use Scenario: 12V/24V lead-acid or Li-ion battery charger with CC/CV profile and temperature compensation. IC Role / Device Role / Timing Role: Mixed-signal power controller - executes charging algorithm in firmware, monitors cell voltage/current via ADC, and drives synchronous rectifiers for >94% efficiency. Use Value: Eliminates separate MCU + analog controller, reduces component count by 30%, and supports firmware-updatable charge profiles without hardware change. |
| Industrial DC-DC Converter | Automotive Power Supply |
Use Scenario: 48V-to-12V isolated buck-boost converter for factory automation I/O modules. IC Role / Device Role / Timing Role: Dual-output synchronous controller - manages primary and secondary low-side switches, implements bidirectional power flow for regenerative braking simulation. Use Value: Supports SEPIC/Ćuk topologies with single IC, achieves <50 mV output ripple via differential remote sensing and 10-bit ADC-based loop correction. | Use Scenario: 12V auxiliary power supply for ADAS camera modules with cold-crank immunity. IC Role / Device Role / Timing Role: AEC-Q100-qualified power manager - maintains regulated 5V/3.3V outputs during 4.5V–42V input transients, triggers graceful shutdown below UVLO threshold. Use Value: Meets ISO 7637-2 pulse 4 (cold crank) requirements with 30 µA sleep current and fast wake-up from deep sleep (<100 µs). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally enhanced power controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP19115-E/MQ | 28-pin QFN with 4 additional ADC channels (AN5–AN7), extra GPIO (GPB4–GPB7), and dual ICSPDAT/ICSPCLK pins. | Required for designs needing >5 analog inputs or enhanced capture/compare functionality for complex dimming or multi-phase control. | Select MCP19115-E/MQ when additional analog sensing, GPIO, or dual programming interface is needed; otherwise MCP19114T-E/MQ offers identical core control with smaller footprint. |
| UCC28911DR | Standalone quasi-resonant flyback controller (no MCU), no programmability, fixed 80kHz frequency, no ADC or GPIO. | Suitable only for cost-sensitive, fixed-function flyback supplies without digital supervision or adaptive protection. | Choose UCC28911DR only for simple, non-configurable AC/DC adapters; MCP19114T-E/MQ provides firmware-defined flexibility, diagnostics, and topology agility. |
Compared with MCP19115-E/MQ, the MCP19114T-E/MQ trades I/O count and ADC channels for compact 4×4 mm QFN packaging - ideal for space-constrained LED drivers. Against UCC28911DR, it adds full digital configurability, current-mode precision, and multi-topology support at the cost of higher design complexity and BOM count.
Availability
MCP19114T-E/MQ is available at Aetrix Electronics and suitable for LED lighting drivers, battery chargers, and industrial DC-DC converters requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant power management ICs.
Supply support for MCP19114T-E/MQ 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 is a global semiconductor company specializing in microcontrollers, analog devices, and power management ICs, with a focus on embedded control and connectivity solutions.
The MCP19114T-E/MQ belongs to Microchip's Digitally Enhanced Power Analog (DEPA) product line, designed to merge analog power control fidelity with digital programmability for next-generation energy-efficient power conversion in automotive, industrial, and lighting applications.
FAQ
What topology configurations does the MCP19114T-E/MQ support?
The MCP19114T-E/MQ supports flyback, boost, SEPIC, and Ćuk topologies out of the box, with quasi-resonant or fixed-frequency operation. Its dual low-side gate drivers, differential current sensing, and DESAT detection make it especially suited for isolated flyback and resonant converters. The integrated microcontroller allows firmware-level adaptation to custom topologies beyond those explicitly listed in the datasheet, provided gate drive timing and sensing interfaces align.
Does the MCP19114T-E/MQ require an external crystal or oscillator?
No, the MCP19114T-E/MQ includes a factory-calibrated 8 MHz internal oscillator accurate to ±1% typical, eliminating the need for external crystals or RC networks. This oscillator serves both the microcontroller core and PWM timing functions. External clock input (via CLKPIN) is optional and used only for synchronization with other controllers or precise frequency locking - not required for standalone operation.
How is gate drive voltage configured on the MCP19114T-E/MQ?
The MCP19114T-E/MQ uses the VDR pin to set gate drive voltage: it accepts either 5V (typically sourced from the internal VDD LDO via filtered path) or 10V (using an external TC1240 voltage doubler). The gate drive UVLO threshold is programmable at 2.7V or 5.4V - critical for robust operation during input transients. At 10V VDR, PDRV/SDRV deliver 1A sink/source; at 5V, capability drops to 0.5A.
Can the MCP19114T-E/MQ operate in quasi-resonant mode without external components?
Yes - the MCP19114T-E/MQ includes a built-in DESAT comparator with programmable offset voltage adjustment, enabling self-synchronized quasi-resonant operation using only the DESATP/DESATN pins connected to the transformer auxiliary winding. No external comparators, timers, or logic gates are required. Leading edge blanking (0/50/100/200 ns) and slope compensation are also fully integrated and software-configurable.
What is the function of the VREF2 pin on the MCP19114T-E/MQ?
The VREF2 pin on the MCP19114T-E/MQ is a DAC output (GPB1) that provides a programmable reference voltage for secondary-side regulation or auxiliary analog functions. When configured as main controller via MODECON<1:0>, VREF2 delivers a precision voltage derived from the internal 8-bit DAC - commonly used to set current limits, bias analog comparators, or calibrate sensor offsets. It is not a fixed 2.5V reference but a software-adjustable output tied to the microcontroller's DAC register.
MCP19114T-E/MQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 28-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Type:
- Transistor Driver
- Function:
- Step-Up, Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Boost, Cuk, Flyback, SEPIC
- Number of Outputs:
- 1
- Output Phases:
- 1
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 42V
- Frequency - Switching:
- 31.25kHz ~ 2MHz
- Duty Cycle (Max):
- -
- Synchronous Rectifier:
- No
- Clock Sync:
- No
- Serial Interfaces:
- I2C
- Control Features:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-QFN (5x5)
MCP19114T-E/MQ FAQ
1.How can I place an order for MCP19114T-E/MQ through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP19114T-E/MQ 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 MCP19114T-E/MQ reliable?
The price and inventory of MCP19114T-E/MQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP19114T-E/MQ is usually 5 days.
3.What payment methods are accepted for MCP19114T-E/MQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP19114T-E/MQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP19114T-E/MQ?
MCP19114T-E/MQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP19114T-E/MQ 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 MCP19114T-E/MQ?
For technical support, including MCP19114T-E/MQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP19114T-E/MQ requirements.
6.How does Aetrix verify that MCP19114T-E/MQ is sourced from the original manufacturer or authorized distributors?
All MCP19114T-E/MQ 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 MCP19114T-E/MQ meets industry standards.
7.What is the process for return or replacement of MCP19114T-E/MQ?
All MCP19114T-E/MQ units undergo pre-shipment inspection (PSI). If there is an issue with MCP19114T-E/MQ, 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 MCP19114T-E/MQ part is unused and in its original packaging.
Return procedure for MCP19114T-E/MQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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