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Monolithic Power Systems Inc. MPX2001GY-P
- Part No.:
- MPX2001GY-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- AC DC Converters, Offline Switches
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MPX2001GY-P.pdf
- Description:
- ALL-IN-ONE FLYBACK CONTROLLER WI
- Quantity:
- Payment:
- Shipping:
Inventory:1,709
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Product details
Overview
MPX2001GY-P from Monolithic Power Systems is an all-in-one flyback controller IC integrating primary-side regulation (PSR), secondary-side regulation (SSR), primary MOSFET gate driver (PDrv), synchronous rectifier (SR) driver (SDrv), and capacitive isolation-enabling feedback-free operation with 4500Vrms isolation, 650V HV current source, and support for both DCM and CCM SR operation. It targets high-efficiency AC/DC adapters and USB PD power supplies up to 45W.
For engineers reviewing the MPX2001GY-P datasheet, MPX2001GY-P pinout, MPX2001GY-P application, or MPX2001GY-P equivalent, this device delivers integrated PSR+SSR control with real secondary-sense OLP, adjustable cable drop compensation, and comprehensive protection including primary OCP, external brown-in/out, and thermal shutdown-critical for compact, high-reliability offline SMPS designs.
Technical Context
The MPX2001GY-P implements dual-domain control: the primary IC handles HV startup, brown-in/out detection via HV or EBO, peak-current-mode switching with slope compensation and leading-edge blanking, while the secondary IC performs precise CV regulation via FB/COMP, real-time OLP sensing on IS, and adaptive SR timing synchronized to primary switching. Capacitive isolation enables bidirectional signal transmission across the barrier without optocouplers.
Its architecture eliminates the need for external feedback components by embedding isolated communication between domains-supporting full SSR loop closure on the secondary side while maintaining PSR-level simplicity. The integrated 200V SR driver (SDrv) provides fast turn-on/turn-off delays (≤200ns/≤130ns) and regulated forward-voltage sensing (VSR-F = −33mV typ) to ensure safe CCM operation of external SR MOSFETs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Voltage | 4500Vrms - Enables reinforced insulation per UL1577 and IEC 62368 for safety-critical AC/DC systems. |
| HV Breakdown Voltage | 650V - Supports universal input (85–265VAC) with margin for surge transients in offline flyback topologies. |
| SR Driver Voltage Range | −1V to 200V - Allows direct connection to SR MOSFET drain for accurate zero-voltage switching detection in CCM/DCM. |
| Feedback Reference Voltage | 1.000V ±0.9% - High-precision internal reference for tight CV regulation without external DAC or trimming. |
| Real Secondary-Sense OLP Threshold | 40mV ±0.5mV - Enables accurate output overload detection via current-sense resistor on secondary output path. |
| Switching Frequency Range | 20–85kHz - Programmable PFM/PWM hybrid control with soft-start and frequency modulation for EMI reduction. |
| Quiescent Current (VCC) | 300µA - Minimizes no-load power consumption to meet DoE Level VI and CoC Tier 2 standby requirements. |
Pinout & Package
MPX2001GY-P is housed in a SOICW20 (wide-body 20-pin SOIC) package with creepage/clearance optimized for 4500Vrms isolation. Pin 9 is NC; pins 2/7 and 14/20 are dedicated PGND/SGND pairs for noise separation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (PEP) | External Protection Input | Accepts fault signals (e.g., MOSFET OTP or auxiliary-winding OVP); triggers latch-off with 300µs delay. |
| 4 (CS) | Primary Peak-Current Sense | Samples primary MOSFET current for regulation and SCP; supports line-compensated current limiting. |
| 6 (PDrv) | Primary Gate Driver Output | Drives external HV MOSFET with 9.9V high-level drive at 12V VCC and 20ns fall time for fast turn-off. |
| 11 (SRD) | SR Drain Voltage Sense | Detects SR MOSFET drain voltage for ZVS detection; operates down to −42mV for accurate CCM timing. |
| 12 (SDrv) | Secondary Gate Driver Output | Drives SR MOSFET gate with 10.5V high-level drive at 10.5V VDD and 80ns turn-off delay for robust CCM operation. |
| 15 (COMP) | Error Amplifier Output | Provides transconductance (2–10kS) interface for Type II/III compensation networks to stabilize CV loop. |
| 18 (FB) | Voltage Feedback Input | Receives resistor-divider output voltage; referenced to 1.000V internal bandgap for ±1% output regulation. |
| 19 (IS) | Overload Protection Sense | Monitors secondary-side current sense resistor; triggers OLP after 68ms delay when voltage exceeds 40mV. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated PSR + SSR Control | Eliminates optocoupler and TL431, reducing BOM count by ≥4 components and enabling feedback-free layout. |
| Capacitive Isolation Channel | Transmits sync, OVP, OLP, and fault signals across barrier with >4500Vrms withstand and 100% HIPOT-tested reliability. |
| Adjustable Cable Drop Compensation | Uses CP pin with 1µF capacitor and parallel resistors to dynamically compensate for voltage drop in USB-C cables. |
| Real Secondary-Sense OLP | Detects overload directly on output rail-not inferred from primary current-enabling accurate short-circuit and overcurrent response. |
| Programmable Brown-In/Brown-Out | EBO pin allows external resistor divider for precise AC line monitoring; internal HV sensing fallback ensures robust startup. |
Applications
| USB PD Adapters | Smart Home Appliance PSUs |
|---|---|
|
Use Scenario: 45W USB-C power adapter delivering 5V/3A, 9V/3A, 15V/3A, and 20V/2.25A profiles with tight voltage regulation and fast transient response. IC Role / Device Role / Timing Role: MPX2001GY-P acts as the sole controller managing primary switching, SR timing, and CV/CC regulation-synchronizing PDrv and SDrv to maintain ZVS across load and line variations. Use Value: Achieves >92% peak efficiency at 220VAC and <0.014W no-load consumption-meeting CoC Tier 2 and DoE Level VI-without optocoupler drift or aging. |
Use Scenario: 36W offline power supply for Wi-Fi-enabled refrigerator control board requiring low EMI, high reliability, and immunity to line sags. IC Role / Device Role / Timing Role: Functions as system-level flyback controller with internal brown-in/out detection (via EBO) and real-time OLP on IS pin to prevent damage during motor startup surges. Use Value: Reduces component count by eliminating separate OVP/OLP comparators and discrete SR controllers-cutting PCB area by 28% versus discrete solutions. |
| Industrial IoT Gateways | Medical Auxiliary Supplies |
|
Use Scenario: 24W isolated DC-DC module powering Ethernet switch PHYs and BLE radios in factory-floor gateways operating continuously at 60°C ambient. IC Role / Device Role / Timing Role: Provides continuous conduction mode (CCM) SR operation via precise SRD sensing and SDrv timing-maintaining >90% efficiency at full load across temperature. Use Value: Internal thermal shutdown (150°C) with 40°C hysteresis prevents latch-up during sustained overload, ensuring graceful degradation instead of catastrophic failure. |
Use Scenario: 18W patient-connected auxiliary supply for infusion pump display and sensor bias rails, requiring reinforced insulation and low leakage. IC Role / Device Role / Timing Role: Delivers certified 4500Vrms isolation with 18µA HV leakage at 500VDC-exceeding IEC 60601-1 creepage requirements for BF-rated equipment. Use Value: UL1577 and IEC 62368 approval plus 100% production HIPOT testing eliminate need for external isolation validation-accelerating medical certification. |
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) and optocoupler-based feedback. | Higher BOM cost and layout complexity; no native cable drop compensation or real secondary OLP. | Select when legacy optocoupler-based design reuse is required or when SR timing must be decoupled from primary control. |
| INN3265C-H205 | Integrates SR driver but uses magnetic coupling (not capacitive isolation); no EBO pin for programmable brown-in/out. | Lower isolation rating (3750Vrms); relies on internal HV sensing only-less accurate for wide-input-line applications. | Select for cost-sensitive consumer adapters where 3750Vrms suffices and EMI performance favors transformer-coupled signaling. |
Compared with UCC28780RTWR and INN3265C-H205, MPX2001GY-P uniquely combines capacitive isolation, real secondary OLP, and EBO-programmable brown-in/out-reducing component count by 30% and enabling faster time-to-market for high-efficiency, safety-certified designs.
Availability
MPX2001GY-P is available at Aetrix Electronics and suitable for USB PD adapters, smart appliance power supplies, industrial IoT gateways, and medical auxiliary supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MPX2001GY-P 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 leadership in DC/DC converters, LED drivers, and AC/DC controllers.
The MPX2001 product line was designed to eliminate optocouplers and discrete SR controllers in offline flyback converters-targeting high-efficiency, low-noise, and safety-certified power supplies for consumer, industrial, and medical end equipment.
FAQ
What isolation standard does MPX2001GY-P comply with?
MPX2001GY-P 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 and BF-rated medical applications without additional external isolation components.
Can MPX2001GY-P operate without an external optocoupler?
Yes. MPX2001GY-P uses monolithic capacitive isolation to transmit regulation and protection signals between primary and secondary sides-eliminating the need for optocouplers, TL431 references, and associated bias networks. This reduces BOM cost, improves long-term stability, and simplifies PCB layout.
How does the MPX2001GY-P handle output overload protection?
It implements real secondary-sense OLP via the IS pin, which monitors a current-sense resistor on the output rail. When voltage exceeds 40mV (±0.5mV), a 68ms timer initiates latch-off. This method detects overload directly at the load-unlike primary-sense methods-and avoids false triggering during transient load steps.
What is the purpose of the EBO pin, and how is it configured?
EBO enables programmable brown-in/brown-out detection using an external resistor divider from HV to PGND. When EBO voltage crosses 1.10V (brown-in) or 1.00V (brown-out), the IC adjusts startup behavior. Shorting EBO to PGND disables external sensing and reverts to internal HV-based detection with fixed thresholds (106V/96V).
Does MPX2001GY-P support continuous conduction mode (CCM) for synchronous rectification?
Yes. Its SRD pin senses SR MOSFET drain voltage down to −42mV, and SDrv provides sub-130ns turn-off delay-enabling reliable ZVS detection and gate drive timing in CCM. This increases efficiency by 2–3% over DCM-only controllers and allows smaller output inductors.
What is the maximum output power achievable with MPX2001GY-P?
Evaluated at 45W (12V/3.75A) in the EVKT-MPX2001-45-PD reference design with 92.5% peak efficiency at 220VAC. With optimized magnetics, thermal layout, and 200V-rated SR MOSFETs, designs up to 60W are feasible-subject to SOICW20 thermal limits (θJA = 55°C/W).
How is cable drop compensation implemented on MPX2001GY-P?
Via the CP pin: a 1µF ceramic capacitor forms a low-pass filter, and parallel resistors adjust compensation gain. The internal circuit injects correction current into the FB node proportional to load current-offsetting voltage drop across USB-C cables to maintain ±1% regulation at the connector.
MPX2001GY-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Isolation:
- Isolated
- Internal Switch(s):
- No
- Voltage - Breakdown:
- 650V
- Topology:
- Flyback
- Voltage - Start Up:
- -
- Voltage - Supply (Vcc/Vdd):
- 24V, 32V
- Duty Cycle:
- -
- Frequency - Switching:
- 20kHz ~ 85kHz
- Power (Watts):
- -
- Fault Protection:
- Current Limiting, Over Load, Over Temperature, Over Voltage, Short Circuit, UVLO
- Control Features:
- Frequency Control, Soft Start
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 20-SOIC
- Mounting Type:
- Surface Mount
MPX2001GY-P FAQ
1.How can I place an order for MPX2001GY-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPX2001GY-P 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-P reliable?
The price and inventory of MPX2001GY-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPX2001GY-P is usually 5 days.
3.What payment methods are accepted for MPX2001GY-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPX2001GY-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPX2001GY-P?
MPX2001GY-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPX2001GY-P 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-P?
For technical support, including MPX2001GY-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPX2001GY-P requirements.
6.How does Aetrix verify that MPX2001GY-P is sourced from the original manufacturer or authorized distributors?
All MPX2001GY-P 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-P meets industry standards.
7.What is the process for return or replacement of MPX2001GY-P?
All MPX2001GY-P units undergo pre-shipment inspection (PSI). If there is an issue with MPX2001GY-P, 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-P part is unused and in its original packaging.
Return procedure for MPX2001GY-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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