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Monolithic Power Systems Inc. MP6919GS-Z
- Part No.:
- MP6919GS-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- OR Controllers, Ideal Diodes
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MP6919GS-Z.pdf
- Description:
- CCM/DCM FLYBACK IDEAL DIODE WITH
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MP6919GS-Z 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 featuring 110µA quiescent current for high-efficiency low-voltage USB PD and QC chargers.
For engineers reviewing the MP6919GS-Z datasheet, MP6919GS-Z pinout, MP6919GS-Z application, or MP6919GS-Z equivalent, this device delivers fast turn-off timing (25ns), ringing detection for DCM/QR stability, and self-powered operation-critical for compact adapter designs with tight thermal and layout constraints.
Technical Context
The MP6919 operates as an intelligent secondary-side rectifier controller in flyback topologies, using VDS slew-rate detection and blanking timers to prevent false turn-on during demagnetization ringing. Its internal linear regulator generates VDD from SENSE without auxiliary winding, supporting both high-side and low-side configurations.
It implements adaptive gate control to maintain ~40mV forward regulation across load range, with precise turn-on (-80mV) and turn-off (-3mV) thresholds, plus 1.2µs turn-on blanking and 25ns turn-off delay-enabling stable operation in CCM, DCM, and quasi-resonant modes while meeting Energy Star efficiency requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS Rating | 100V maximum drain-source breakdown-supports universal-input offline flyback designs up to 265VAC input. |
| RDS(ON) | 13mΩ typical at 25°C-reduces conduction loss vs. Schottky diodes, enabling higher power density in 36W+ adapters. |
| VFWD Regulation | 40mV typical forward voltage drop-minimizes rectifier loss at light-to-moderate loads, improving efficiency below 30% load. |
| tDOFF | 25ns turn-off delay-ensures rapid MOSFET shutdown before reverse recovery, critical for CCM operation and EMI control. |
| IQ | 110µA quiescent current-low standby consumption enables compliance with no-load power regulations (<30mW). |
| VDD UVLO | 4.2V rising threshold-prevents erratic startup during brown-out conditions and ensures clean enable/disable sequencing. |
| Thermal RθJA | 70°C/W (SOIC-8)-defines thermal derating curve; limits continuous output current to ~3A at 25°C ambient with standard PCB layout. |
Pinout & Package
MP6919GS-Z is housed in an SOIC-8 package with exposed pad (JEDEC MS-012 AA), optimized for thermal dissipation in high-power-density adapters. Pin assignments are validated per MPS datasheet Rev. 1.0 (2020).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 6, 7, 8 | VD | MOSFET drain connection-handles full primary-referred secondary current; tied directly to transformer secondary winding. |
| 2, 3 | VS | MOSFET source-serves as power ground reference and VDD return path; must be low-inductance for accurate sensing. |
| 4 | VDD | Internal LDO output-supplies control circuitry at ~6.7V; requires 1µF ceramic capacitor to ground for stability. |
| 5 | SENSE | VDD input & VDS sensing node-derives supply from drain voltage; enables auxiliary-winding-free operation in high-side setups. |
Key Features
| Feature | Design Value |
|---|---|
| Self-powered operation | Generates VDD from SENSE pin-eliminates need for auxiliary winding, reducing BOM count and transformer complexity in low-output-voltage adapters. |
| Slew-rate–based turn-on detection | Rejects DCM/QR ringing by requiring VDS transition > -80mV within 30ns-prevents false activation and shoot-through in resonant converters. |
| Adaptive forward-voltage regulation | Maintains ~40mV VFWD across load range via dynamic gate drive-replaces fixed-gate SR controllers with superior light-load efficiency. |
| Integrated 100V/13mΩ MOSFET | Single-chip solution reduces footprint vs. discrete SR + driver-enables SOIC-8 placement on secondary-side PCB with minimal trace length. |
Applications
| Laptop Adapters | USB PD Chargers |
|---|---|
Use Scenario: 65W universal-input adapter delivering [email protected] with <30mW no-load consumption. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier controller managing MOSFET gate timing in CCM/DCM hybrid mode. Use Value: Enables >94% efficiency at 50% load and meets DOE Level VI/CoC Tier 2 no-load requirements without auxiliary winding. | Use Scenario: Multi-port 45W GaN-based charger supporting variable USB PD output (5–20V) with fast transient response. IC Role / Device Role / Timing Role: Fast-turn-off intelligent rectifier ensuring zero-voltage switching alignment during QR transitions. Use Value: Reduces secondary-side loss by 45% vs. 100V Schottky, allowing smaller heatsink and 20% smaller form factor. |
| QC 3.0 Wall Adapters | High-Efficiency Flyback Converters |
Use Scenario: Compact 18W wall adapter with 9V@2A Quick Charge 3.0 output and 12mm height constraint. IC Role / Device Role / Timing Role: Low-quiescent-current SR controller operating down to 0V output, enabling direct 5V/9V/12V selection. Use Value: Achieves 89% efficiency at 10% load-critical for QC's burst-mode efficiency targets-without compromising start-up reliability. | Use Scenario: Industrial 24V@2A isolated DC-DC module requiring >92% efficiency across -40°C to +85°C ambient. IC Role / Device Role / Timing Role: Robust synchronous rectifier with 150°C junction rating and 125°C operational limit for extended thermal margin. Use Value: Delivers 1.7W max power dissipation with 70°C/W θJA, enabling convection-cooled design without forced air or heatsink. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NCP4306DR2G | Requires auxiliary winding for VDD; 100V/15mΩ MOSFET; 150µA IQ | Not suitable for ultra-low-output-voltage (<5V) high-side rectification due to VDD dependency | Select when auxiliary winding is already present and cost sensitivity outweighs board space savings |
| Vishay SiHP12N100D | Discrete 100V/12mΩ MOSFET only-no integrated controller or sensing logic | Requires external SR controller IC (e.g., MP6905), increasing component count and layout complexity | Select when discrete optimization of gate drive timing or thermal separation is required for >50W designs |
Compared with NCP4306DR2G and SiHP12N100D, MP6919GS-Z uniquely combines self-powered operation, 40mV forward regulation, and SOIC-8 integration-reducing total solution size by 35% and eliminating auxiliary winding design trade-offs in sub-45W USB PD adapters.
Availability
MP6919GS-Z is available at Aetrix Electronics and suitable for laptop adapters, USB PD chargers, and QC 3.0 wall adapters requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for MP6919GS-Z 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 two decades of expertise in DC-DC conversion, motor drivers, and intelligent power solutions.
The MP6919 belongs to MPS's synchronous rectifier product line, engineered specifically for high-efficiency, low-noise flyback converters in consumer charging applications where auxiliary winding elimination and ultra-low quiescent current are critical.
FAQ
What is the minimum output voltage supported by MP6919GS-Z?
The MP6919GS-Z supports output voltages down to 0V, enabled by its self-powered architecture and wide VDD operating range (4.5V to 13V). This allows direct use in 5V, 9V, and 12V USB PD and QC applications without auxiliary winding or external bias supply.
Does MP6919GS-Z require an external gate resistor?
No external gate resistor is required-the MP6919GS-Z integrates optimized gate drive circuitry with controlled slew rate. Adding an external resistor may degrade turn-on speed and compromise 40mV forward regulation accuracy, especially in CCM operation.
How does the MP6919GS-Z handle demagnetization ringing in DCM mode?
It uses slew-rate detection: only turns on if VDS crosses -80mV within 30ns. Ringing-induced slow transitions are rejected, preventing false turn-on. Combined with 1.2µs turn-on blanking, this ensures immunity to DCM and quasi-resonant noise without sacrificing efficiency.
Can MP6919GS-Z be used in high-side rectification configurations?
Yes-its SENSE pin serves as both VDD input and VDS sensing node, enabling high-side placement without auxiliary winding. The SOIC-8 layout accommodates high-side thermal management when mounted on secondary-side copper pour with thermal vias.
What is the maximum continuous output current for MP6919GS-Z in a standard SOIC-8 layout?
At 25°C ambient with JEDEC-standard 4-layer PCB, the recommended maximum continuous output current is 3A. This is thermally limited by 70°C/W θJA and 1.7W max power dissipation-verified in 36W flyback reference designs per MPS datasheet Rev. 1.0.
Is MP6919GS-Z compatible with quasi-resonant (QR) flyback controllers?
Yes-it explicitly supports QR operation via ringing detection and blanking functions. The 25ns turn-off delay and -3mV turn-off threshold align with QR valley-switching timing, minimizing reverse recovery loss and enabling >94% efficiency in QR-based 45W adapters.
MP6919GS-Z 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-Z FAQ
1.How can I place an order for MP6919GS-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP6919GS-Z 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-Z reliable?
The price and inventory of MP6919GS-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP6919GS-Z is usually 5 days.
3.What payment methods are accepted for MP6919GS-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP6919GS-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP6919GS-Z?
MP6919GS-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP6919GS-Z 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-Z?
For technical support, including MP6919GS-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP6919GS-Z requirements.
6.How does Aetrix verify that MP6919GS-Z is sourced from the original manufacturer or authorized distributors?
All MP6919GS-Z 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-Z meets industry standards.
7.What is the process for return or replacement of MP6919GS-Z?
All MP6919GS-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP6919GS-Z, 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-Z part is unused and in its original packaging.
Return procedure for MP6919GS-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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