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Monolithic Power Systems Inc. MP6919GS-P
- Part No.:
- MP6919GS-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- OR Controllers, Ideal Diodes
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MP6919GS-P.pdf
- Description:
- CCM/DCM FLYBACK IDEAL DIODE WITH
- Quantity:
- Payment:
- Shipping:
Inventory:435
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Product details
Overview
MP6919GS-P from Monolithic Power Systems is a CCM/DCM flyback synchronous rectifier IC integrating a 100V/13mΩ MOSFET, regulating forward voltage drop to 40mV, eliminating auxiliary winding requirement, and supporting high-side/low-side rectification in USB PD and QC chargers.
For engineers reviewing the MP6919GS-P datasheet, MP6919GS-P pinout, MP6919GS-P application, or MP6919GS-P equivalent, this device delivers fast turn-off timing (25ns), ringing detection for DCM/QR stability, 110µA quiescent current, and SOIC-8 thermal performance up to 125°C junction temperature.
Technical Context
The MP6919GS-P implements intelligent gate control using slew-rate detection and dual blanking timers: a 1.2µs turn-on blanking window prevents false triggering during demagnetizing ringing, while a 2V turn-off blanking threshold ensures stable shutdown after VDS crosses -3mV. Its internal linear regulator generates 6.7V VDD from SENSE without auxiliary winding.
It operates across discontinuous (DCM), continuous (CCM), and quasi-resonant (QR) flyback modes by dynamically adjusting gate drive to maintain ~40mV forward regulation voltage (VS–VD) and enabling zero-current turn-off with 25ns delay - critical for efficiency at light loads and high switching frequencies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS Breakdown | 100V - supports universal AC input (90–265VAC) flyback secondaries without external clamping |
| RDS(ON) | 13mΩ @ 25°C - enables ≤3A output current with <100mW conduction loss at 2A |
| VFWD Regulation | 40mV typ - reduces rectifier conduction loss vs. Schottky diodes (≥300mV), improving efficiency by ≥1.2% at full load |
| Turn-off Delay | 25ns - ensures rapid MOSFET shutdown before reverse recovery, minimizing shoot-through risk in CCM |
| IQ (VDD) | 110µA - sustains low-power operation during standby, meeting Energy Star Level VI no-load requirements |
| VDD UVLO | 4.2V rising / 4.0V falling - provides clean start-up and brown-out protection without external supervision circuitry |
| Thermal Resistance θJA | 70°C/W - allows SOIC-8 PCB layout with 2 oz copper and thermal vias to sustain 125°C TJ at 3A output |
Pinout & Package
MP6919GS-P is housed in a standard SOIC-8 package (JEDEC MS-012, variation AA) with exposed pad not electrically connected; thermal dissipation relies on PCB copper area and via count under pins 1,6,7,8 (VD).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 6, 7, 8 | VD | MOSFET drain - connects to transformer secondary winding; carries full output current and withstands 100V transient spikes |
| 2, 3 | VS | MOSFET source - serves as power ground reference and VDD return path; must be low-inductance connection to minimize noise coupling |
| 4 | VDD | Internal LDO output - supplies 6.7V to control circuitry; requires 1µF ceramic capacitor to ground for stability |
| 5 | SENSE | VDD input & VDS sensing node - monitors drain voltage for turn-on/turn-off decisions and powers internal regulator; sensitive to ringing |
Key Features
| Feature | Design Value |
|---|---|
| No auxiliary winding required | Generates VDD from SENSE pin using integrated linear regulator - eliminates transformer auxiliary winding, reducing BOM count and cost in compact adapters |
| Slew-rate detection | Rejects false turn-on during DCM/QR ringing by requiring dV/dt > threshold within 30ns - prevents shoot-through and improves reliability |
| Forward voltage regulation | Maintains VS–VD ≈ –40mV across load range - minimizes conduction loss versus fixed-gate SR controllers |
| Wide output voltage range | Operates down to 0V output - supports USB PD PPS and variable-output laptop adapters without reconfiguration |
| Energy Star compliance | 110µA IQ and fast turn-off enable <30mW no-load power - meets DOE Level VI and EU CoC v5 Tier 2 requirements |
Applications
| Laptop Adapters | USB PD Chargers |
|---|---|
|
Use Scenario: 65W universal-input adapter delivering 20V/3.25A with active clamp flyback topology. IC Role / Device Role / Timing Role: Synchronous rectifier controller managing 100V MOSFET gate drive with 25ns turn-off delay to prevent reverse conduction. Use Value: Enables >94% peak efficiency at 230VAC/100% load and <30mW no-load consumption without auxiliary winding. |
Use Scenario: Multi-port USB PD charger supporting 5–20V PPS output with single-flyback + DC-DC post-regulation. IC Role / Device Role / Timing Role: High-side synchronous rectifier providing 0V–20V output compatibility and fast transient response during PPS voltage steps. Use Value: Eliminates need for separate auxiliary bias supply, reducing transformer complexity and enabling <20mm board height. |
| QC 3.0 Fast Charging | High-Efficiency Flyback Converters |
|
Use Scenario: 18W wall charger with QR flyback operating at 120kHz, targeting 92% efficiency at 9V/2A output. IC Role / Device Role / Timing Role: Intelligent rectifier using ringing detection to suppress false turn-on during demagnetization phase. Use Value: Achieves stable operation without snubber losses, increasing efficiency by 1.5% over diode-based designs. |
Use Scenario: Industrial 24V/2A isolated flyback for PLC I/O modules requiring >10-year lifetime and -40°C to +85°C operation. IC Role / Device Role / Timing Role: Primary-side referenced synchronous rectifier with 125°C max junction rating and 150°C absolute max rating. Use Value: Reduces thermal stress on secondary-side components, extending electrolytic capacitor life by 2× at full load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous rectifier controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NCP4306DR2G | Requires auxiliary winding for VDD; 60V VDS rating; 20mΩ RDS(ON) | Limited to ≤12V output; unsuitable for 20V USB PD or high-side configurations | Select when auxiliary winding exists and output voltage ≤12V; lower cost but reduced flexibility |
| Vishay SiHP12N50D | Discrete 500V/12A MOSFET only - no integrated controller or sensing; requires external SR driver | Demands full external control circuitry (gate driver, VDS sensing, timing logic); higher design effort | Select only for custom high-voltage (>100V) or high-current (>5A) applications where integration is not required |
Compared with NCP4306DR2G and SiHP12N50D, MP6919GS-P uniquely integrates 100V MOSFET + controller + self-powered VDD generation, enabling auxiliary-free, wide-output-range designs with superior light-load efficiency and DCM/QR robustness.
Availability
MP6919GS-P is available at Aetrix Electronics and suitable for laptop adapters, USB PD chargers, and high-efficiency flyback converters requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for MP6919GS-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 power management ICs, with over 20 years of expertise in DC/DC converters, LED drivers, motor drivers, and synchronous rectifiers.
The MP6919 product line targets high-density AC/DC adapters and USB-C power delivery systems, emphasizing auxiliary-winding elimination, wide output voltage support, and robust DCM/QR mode operation.
FAQ
Does MP6919GS-P require an external gate resistor?
No. The MP6919GS-P integrates a fully self-contained gate driver with optimized slew rate control. External gate resistors are unnecessary and may degrade turn-on/turn-off timing accuracy. Layout focus should instead be on minimizing trace inductance between VS and ground plane.
Can MP6919GS-P operate in high-side rectification without auxiliary winding?
Yes. Its SENSE pin functions as both VDD input and VDS sensing node, enabling direct connection to the drain of a high-side MOSFET. The internal linear regulator generates stable 6.7V VDD from SENSE, eliminating auxiliary winding dependency in either configuration.
What is the maximum recommended output current for MP6919GS-P?
The datasheet specifies 3A as the recommended rated output current for universal-input adapters. This assumes SOIC-8 PCB layout with ≥2 oz copper, ≥6 thermal vias under drain pins, and ambient temperature ≤50°C. Higher currents require thermal derating per θJA = 70°C/W.
How does the slew-rate detection prevent false turn-on in DCM?
Slew-rate detection requires VDS to cross the -80mV turn-on threshold within 30ns. During DCM ringing, dV/dt is too slow to meet this criterion, so the gate remains off. Only true primary-turn-off events produce fast enough transitions to trigger valid turn-on, preventing shoot-through.
Is MP6919GS-P compatible with quasi-resonant (QR) controllers?
Yes. Its ringing detection circuitry and 1.2µs turn-on blanking time specifically suppress false triggering during QR valley-switching waveforms. It has been validated in 36W QR flyback designs with 265VAC input and 3A output, maintaining stable regulation across line/load.
What is the purpose of the external resistor recommended on the SENSE pin?
A 100–300Ω resistor between SENSE and VD limits peak current during overvoltage events (e.g., body-diode conduction), protecting the SENSE pin's -1V to +180V rating. Values >300Ω risk insufficient VDD charging and degraded slew-rate detection performance.
Does MP6919GS-P support multiple output flyback topologies?
No. It is designed exclusively for single-output flyback converters with synchronous rectification on one secondary winding. Multi-output designs require separate SR controllers per winding or use of primary-side regulation with diode rectification on auxiliary outputs.
MP6919GS-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Flyback
- FET Type:
- N-Channel
- Ratio - Input:Output:
- 1:1
- Internal Switch(s):
- Yes
- Delay Time - ON:
- 20 ns
- Delay Time - OFF:
- 25 ns
- Current - Output (Max):
- -
- Current - Supply:
- 2.4 mA
- Voltage - Supply:
- 4.5V ~ 13V
- Applications:
- General Purpose
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MP6919GS-P FAQ
1.How can I place an order for MP6919GS-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP6919GS-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 MP6919GS-P reliable?
The price and inventory of MP6919GS-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP6919GS-P is usually 5 days.
3.What payment methods are accepted for MP6919GS-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP6919GS-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP6919GS-P?
MP6919GS-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP6919GS-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 MP6919GS-P?
For technical support, including MP6919GS-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP6919GS-P requirements.
6.How does Aetrix verify that MP6919GS-P is sourced from the original manufacturer or authorized distributors?
All MP6919GS-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 MP6919GS-P meets industry standards.
7.What is the process for return or replacement of MP6919GS-P?
All MP6919GS-P units undergo pre-shipment inspection (PSI). If there is an issue with MP6919GS-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 MP6919GS-P part is unused and in its original packaging.
Return procedure for MP6919GS-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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