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Monolithic Power Systems Inc. MPX2001GY
- Part No.:
- MPX2001GY
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- AC DC Converters, Offline Switches
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MPX2001GY.pdf
- Description:
- ALL-IN-ONE FLYBACK CONTROLLER WI
- Quantity:
- Payment:
- Shipping:
Inventory:3,787
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Product details
Overview
MPX2001GY from Monolithic Power Systems is an all-in-one flyback controller IC integrating primary-side MOSFET drive, secondary-side regulation, and synchronous rectification (SR) driver with capacitive isolation. It delivers 4500Vrms isolation, supports both DCM and CCM SR operation, features 650V integrated HV current source and 200V SR controller, and enables PSR/SSR hybrid regulation for AC/DC adapters up to 45W.
For engineers reviewing the MPX2001GY datasheet, MPX2001GY pinout, MPX2001GY application, or MPX2001GY equivalent, key selection criteria include its dual-regulation architecture, real secondary-sense OLP, capacitive isolation compliance (UL1577/IEC 62368), 85kHz max switching frequency, and SOICW20 package with validated 20-pin terminal mapping for high-density offline SMPS design.
Technical Context
The MPX2001GY implements a hybrid control architecture where primary-side circuitry (HV sensing, PDrv, CS, EBO) handles start-up, brown-in/out, over-current, and OVP, while secondary-side circuitry (FB, COMP, IS, SRD, SDrv) executes precise CV/CC regulation and real-time overload protection via direct output current sensing. Communication across the isolation barrier uses proprietary capacitive coupling-not optocoupler-based feedback-enabling tight timing alignment between primary and SR gate drives.
This architecture eliminates external optocouplers and TL431, reduces BOM count by ≥4 components, and ensures SR turn-on/off timing synchronized to primary MOSFET conduction edges-critical for safe CCM operation and efficiency gains above 92% at full load. The device supports adjustable cable drop compensation (CP pin) and programmable burst-mode entry via COMP voltage threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Voltage | 4500Vrms - certified for reinforced insulation per UL1577 and IEC 62368, enabling Class II power supplies without creepage/clearance redesign. |
| Max Switching Frequency | 85kHz - sets upper limit for transformer size and EMI filter design; includes slope compensation and leading-edge blanking for stable peak-current mode control. |
| HV Breakdown Voltage | 650V - supports universal input (85–265VAC) with margin for surge transients; integrates startup current source directly from HV rail. |
| SR Drive Voltage Range | 200V - enables direct drive of high-side N-channel SR MOSFETs without external level shifters in offline flyback topologies. |
| Real Secondary-Sense OLP | 40mV threshold on IS pin - provides accurate, temperature-stable overload detection independent of transformer turns ratio or diode forward drop. |
| Feedback Reference Voltage | 1.00V ±0.9% - defines precision CV regulation point; used with FB resistor divider for ±1% output voltage accuracy over line/load/temperature. |
| Quiescent Current (VCC) | 300µA - minimizes no-load power consumption to ≤25mW, supporting DoE Level VI and CoC Tier 2 efficiency requirements. |
Pinout & Package
MPX2001GY is housed in a 20-lead SOICW20 (wide-body SOIC) package with 1.27mm pitch, rated for 2.3W power dissipation at +25°C ambient and θJA = 55°C/W. Pin 9 is NC; pins 2 and 7 are tied PGND; pins 14 and 20 are tied SGND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (PEP) | Primary-side external protection input | Accepts fault signals (e.g., MOSFET OTP, auxiliary winding OVP); triggers latch-off with 300µs delay and internal current source for direct resistor connection. |
| 4 (CS) | Primary peak current sense | Samples MOSFET source current for cycle-by-cycle OCP and SCP; implements line-compensated current limiting using ∆IHVCS/∆VHV ratio of 0.51µA/V. |
| 6 (PDrv) | Primary MOSFET gate driver output | Delivers 9.9V high-level drive at VCC=12V with 30ns rise time; clamped to 13.5V max to protect external MOSFET gate oxide. |
| 10 (HV) | High-voltage input/sensing node | Connects to bulk capacitor; powers internal 650V current source for VCC charging and provides brown-in/out sensing when EBO is disabled. |
| 11 (SRD) | SR MOSFET drain voltage sense | Detects SR body-diode conduction to trigger turn-on; negative threshold (-33mV typ.) enables low-VF GaN/SiC SR use with minimal dead-time loss. |
| 12 (SDrv) | Secondary SR MOSFET gate driver | Drives SR gate with 10.5V high-level output at VDD=10.5V; 110ns typical turn-off delay ensures clean commutation during CCM transitions. |
| 15 (COMP) | Error amplifier output | Integrates FB error signal; sink/source capability (±0.5mA) supports Type II/III compensation networks for loop stability across 20–85kHz PFM range. |
| 19 (IS) | Output current sense input | Measures shunt voltage for real secondary-sense OLP; 40mV threshold enables <1% output current tolerance without calibration. |
Key Features
| Feature | Design Value |
|---|---|
| Capacitive isolation architecture | Replaces optocoupler+TL431, eliminating aging drift, CTR variation, and bandwidth limitations-enabling <1% CV regulation accuracy over 10-year lifetime. |
| Real secondary-sense OLP | Direct current sensing at output rail (via IS pin) provides fast, accurate overload response (<79ms) independent of transformer parasitics or rectifier losses. |
| Integrated HV current source | 650V-rated startup circuit eliminates external HV resistor network, reducing no-load power by >30% and improving reliability under brown-out conditions. |
| CCM-compatible SR control | Sub-200ns SR turn-off delay and negative SRD threshold allow safe synchronous rectification in continuous conduction mode-boosting full-load efficiency to 92.5% at 220VAC input. |
| Adjustable cable drop compensation | CP pin accepts RC network to inject voltage compensation proportional to output current, maintaining ±1% regulation at USB-C PD ports despite 500mV+ cable loss. |
Applications
| USB-C Power Delivery Adapters | Smart Home Appliance Power Supplies |
|---|---|
Use Scenario: 45W USB-C PD adapter delivering 9V/3A or 15V/3A with programmable voltage negotiation and tight output regulation. IC Role / Device Role / Timing Role: MPX2001GY serves as the sole controller managing primary switching, secondary regulation, and SR timing-replacing discrete PSR+SSR+opto solution. Use Value: Achieves >92% efficiency at full load and <25mW no-load consumption, meeting DoE Level VI and EU CoC Tier 2 standards without auxiliary winding or optocoupler. | Use Scenario: 36W isolated power supply for smart refrigerator control board requiring reinforced insulation and surge immunity. IC Role / Device Role / Timing Role: Acts as safety-critical flyback controller with UL1577-certified 4500Vrms isolation and real secondary-sense OLP for motor driver stage protection. Use Value: Eliminates external OVP/OLP comparators and optocoupler, reducing BOM cost by $0.18/unit and PCB area by 25% versus legacy solutions. |
| Offline Battery Chargers | Industrial IoT Edge Node Power |
Use Scenario: 24V/2A Li-ion battery charger for cordless power tools with wide-input (90–264VAC) and thermal foldback. IC Role / Device Role / Timing Role: Provides primary-side brown-in/out detection (via EBO or HV) and secondary-side thermal shutdown coordination through capacitive link. Use Value: Enables single-chip charger design with 40°C thermal hysteresis and <100ms OCP response-preventing MOSFET failure during short-circuit events. | Use Scenario: 12V/1A isolated DC-DC converter powering wireless sensor nodes in factory automation systems with 85–265VAC input. IC Role / Device Role / Timing Role: Functions as compact, high-reliability flyback controller with integrated SR drive and 150°C junction thermal shutdown. Use Value: Supports -40°C to +125°C operating range and 100% production HIPOT test at 4500Vrms, ensuring long-term field reliability in harsh industrial environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar all-in-one flyback controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC28780RTWR | Lacks integrated SR driver; requires external SR controller (e.g., UCC24612); uses transformer-coupled feedback instead of capacitive isolation. | Higher BOM count and layout complexity; no real secondary-sense OLP-relies on primary-sense estimation. | Select when existing designs use TI ecosystem or require multi-output regulation not supported by MPX2001GY. |
| INN3265C-H205 | Integrates primary MOSFET (750V); no separate SR driver-uses internal synchronous rectification with fixed timing; lower isolation rating (3750Vrms). | Not suitable for discrete high-current SR MOSFETs; limited flexibility for custom SR timing or CCM optimization. | Select when lowest component count is critical and 3750Vrms isolation suffices for end-equipment safety certification. |
Compared with UCC28780RTWR and INN3265C-H205, MPX2001GY uniquely combines capacitive isolation, discrete SR drive capability, real secondary-sense OLP, and 4500Vrms rating-making it optimal for high-efficiency, safety-critical 36–45W adapters requiring design flexibility and long-term regulatory compliance.
Availability
MPX2001GY is available at Aetrix Electronics and suitable for USB-C PD adapters, smart appliance power supplies, offline battery chargers, and industrial IoT edge node power requiring stable component supply, full lifecycle support, and traceable sourcing.
Supply support for MPX2001GY 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 over 20 years of expertise in DC-DC conversion, LED drivers, and AC-DC controllers.
The MPX2001 product line was designed specifically for high-efficiency, low-BOM-count offline flyback converters targeting USB-C PD, appliance, and industrial power applications-emphasizing integration, safety certification, and thermal robustness.
FAQ
What isolation standard does MPX2001GY comply with?
MPX2001GY is UL1577 and IEC 62368 certified for reinforced insulation with 4500Vrms isolation. Every unit undergoes 100% production HIPOT testing at 4500Vrms/50Hz, ensuring compliance for Class II power supplies without external isolation barriers.
Can MPX2001GY operate without an external optocoupler?
Yes-MPX2001GY eliminates the need for optocouplers entirely. Its capacitive isolation channel transmits regulation and protection signals between primary and secondary sides, enabling full SSR functionality with no external feedback components.
How does MPX2001GY handle overload protection?
It implements real secondary-sense OLP via the IS pin, measuring output current directly with a 40mV threshold. This provides accurate, temperature-stable overload detection independent of transformer turns ratio-triggering shutdown within 79ms at 25°C.
What is the purpose of the CP pin?
The CP pin enables adjustable cable drop compensation. A 1µF capacitor and parallel resistors form a low-pass filter that injects voltage compensation proportional to output current-maintaining ±1% regulation at remote USB-C ports despite voltage loss in long cables.
Does MPX2001GY support both DCM and CCM SR operation?
Yes-the 200V SR controller supports both modes. Its negative SRD threshold (-33mV typ.) and sub-200ns turn-off delay enable safe, efficient synchronous rectification in continuous conduction mode, boosting full-load efficiency beyond 92%.
What package variants are offered for MPX2001GY?
MPX2001GY is supplied in SOICW20 (20-lead wide-body SOIC). The MPX2001GYE variant uses SOICW20-19 (19-pin, with pin 9 omitted). Both share identical thermal performance (θJA = 55°C/W) and maximum power dissipation (2.3W at +25°C).
How is brown-in/brown-out configured?
Brown-in/out is configurable via the EBO pin: connect to external resistor divider for precise, adjustable thresholds; short EBO to PGND to enable internal HV-based sensing. Detection remains active even when HV current source is off, ensuring reliable low-line protection.
MPX2001GY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Output Isolation:
- Isolated
- Internal Switch(s):
- No
- Voltage - Breakdown:
- -
- Topology:
- Flyback
- Voltage - Start Up:
- -
- Voltage - Supply (Vcc/Vdd):
- 9V ~ 24V
- Duty Cycle:
- 50%
- Frequency - Switching:
- 85kHz
- Power (Watts):
- 2.3 W
- Fault Protection:
- Current Limiting, Over Load, Over Power, Over Temperature, Over Voltage, Short Circuit
- Control Features:
- EN, Frequency Control, Soft Start, Sync
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 20-SOIC
- Mounting Type:
- Surface Mount
MPX2001GY FAQ
1.How can I place an order for MPX2001GY through Aetrix?
Please submit a Request for Quotation (RFQ) for MPX2001GY 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 MPX2001GY reliable?
The price and inventory of MPX2001GY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPX2001GY is usually 5 days.
3.What payment methods are accepted for MPX2001GY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPX2001GY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPX2001GY?
MPX2001GY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPX2001GY 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 MPX2001GY?
For technical support, including MPX2001GY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPX2001GY requirements.
6.How does Aetrix verify that MPX2001GY is sourced from the original manufacturer or authorized distributors?
All MPX2001GY 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 MPX2001GY meets industry standards.
7.What is the process for return or replacement of MPX2001GY?
All MPX2001GY units undergo pre-shipment inspection (PSI). If there is an issue with MPX2001GY, 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 MPX2001GY part is unused and in its original packaging.
Return procedure for MPX2001GY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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