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Monolithic Power Systems Inc. MP1909GTL-Z
- Part No.:
- MP1909GTL-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Gate Drivers
- Package:
- SOT-583
- Datasheet:
-
MP1909GTL-Z.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE SOT583
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MP1909GTL-Z from Monolithic Power Systems is a 30V, 2.2MHz half-bridge gate driver IC for N-channel MOSFETs in synchronous buck/boost topologies, delivering 2A peak low-side sink current and 4A peak low-side source current, with integrated bootstrap diode and adaptive dead-time control for shoot-through prevention - used in wireless charging transmitters and drone DC/DC converters.
For engineers reviewing the MP1909GTL-Z datasheet, MP1909GTL-Z pinout, MP1909GTL-Z application, or MP1909GTL-Z equivalent, key selection criteria include VCC UVLO thresholds (3.6–4.6V), BST-SW UVLO (2.4–3.4V), 100% duty-cycle capability, thermal shutdown at 150°C, and SOT583 package compatibility with high-density PCB layouts.
Technical Context
The MP1909GTL-Z implements a level-shifted floating driver architecture with internal adaptive dead-time control that monitors low-side FET turn-off via VGS sensing before enabling the high-side output - eliminating external timing components while minimizing switching loss. Its single PWM input directly controls complementary DRVH/DRVL outputs without requiring external logic inversion.
It integrates a bootstrap diode (VF = 0.2V @ 100µA, 1.6V @ 100mA) and supports up to 50V BST voltage, enabling operation with VIN up to 30V and gate drive voltages from 4.5V to 12V. UVLO protection is independently applied to both VCC (3.6–4.6V threshold) and BST–SW (2.4–3.4V threshold) rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching frequency | Up to 2.2MHz - enables compact magnetics and high-efficiency power stages in space-constrained applications like e-cigarettes and avionics converters. |
| Peak low-side sink current | 4A - ensures fast turn-off of high-capacitance N-MOSFETs under heavy load, reducing conduction loss and thermal stress. |
| VCC operating range | 4.5V to 12V - matches standard logic-level and intermediate bus supplies, avoiding need for auxiliary LDOs. |
| Bootstrap voltage support | Up to 50V - allows reliable high-side drive in 24V/30V input systems without external charge-pump circuitry. |
| Thermal shutdown threshold | 150°C with 20°C hysteresis - provides robust over-temperature protection while permitting sustained operation near 125°C junction limit. |
| Propagation delay mismatch | <50ns between DRVH/DRVL edges - maintains tight timing alignment critical for zero-voltage switching (ZVS) in resonant topologies. |
| Quiescent current | 150–230µA at VCC = 12V - minimizes standby power in battery-powered devices such as wireless charging pads and portable drones. |
Pinout & Package
MP1909GTL-Z is housed in an 8-pin SOT583 package (1.6mm × 2.1mm), optimized for high thermal performance (θJA = 55°C/W on 2-layer PCB) and dense layout in portable power electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 BST | Bootstrap supply input | Connects to bootstrap capacitor between BST and SW; supports up to 50V differential, enabling high-side gate drive above VIN. |
| 2 PWM | Single-input control signal | Logic-high enables high-side FET (DRVH high); logic-low enables low-side FET (DRVL high); no external inversion required. |
| 3 EN | Enable/disable control | Pull low to disable both drivers with 100kΩ internal pull-down; supports system-level power sequencing and fault shutdown. |
| 4 VCC | Main supply input | Powers internal logic and low-side driver; requires local 1µF decoupling to GND for stable operation across 4.5–12V range. |
| 5 DRVL | Low-side gate driver output | Sinks up to 4A / sources up to 2A; drives N-MOSFET source to GND in half-bridge configuration. |
| 6 GND | Digital and power ground reference | Common return path for VCC, EN, PWM, and DRVL; must be connected to low-impedance ground plane per layout guidelines. |
| 7 SW | Switching node connection | Connects to source of high-side FET and drain of low-side FET; forms bootstrap return path and senses switching transitions. |
| 8 DRVH | Floating high-side gate driver output | Drives gate of high-side N-MOSFET referenced to SW node; operates with 100% duty cycle when VCC – VIN > 3.4V. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bootstrap diode | Reduces BOM count by eliminating external diode; VF = 0.2V @ 100µA enables efficient bootstrap recharge at light loads. |
| Adaptive dead-time control | Monitors low-side FET VGS in real time to dynamically adjust turn-on delay of high-side driver - prevents shoot-through without fixed timing overhead. |
| Independent dual UVLO | Separate thresholds for VCC (3.6–4.6V) and BST–SW (2.4–3.4V) ensure safe operation even during bootstrap capacitor droop or input brownout. |
| 100% duty-cycle support | Enables continuous conduction mode (CCM) operation in buck regulators without high-side driver dropout - critical for low-output-voltage, high-current designs. |
| Low propagation delay mismatch | <50ns difference between tDHRR (80ns) and tDLFR (110ns) preserves timing integrity in MHz-range switching, supporting ZVS/ZCS topologies. |
Applications
| Wireless Charging Transmitter | Drone DC/DC Converter |
|---|---|
|
Use Scenario: High-frequency resonant inverter driving 100–300kHz Qi-compliant transmitter coils with tight EMI constraints. IC Role / Device Role / Timing Role: Half-bridge gate driver generating precisely timed, shoot-through-free complementary gate signals for GaN or Si MOSFETs. Use Value: 2.2MHz max switching and adaptive dead time reduce EMI filter size and improve efficiency over 500kHz competitors. |
Use Scenario: Compact, weight-sensitive 24V-to-5V/12V isolated DC/DC converter powering flight controllers and sensors in multirotor UAVs. IC Role / Device Role / Timing Role: High-side/low-side driver for active-clamp forward or LLC topology with 100% duty-cycle capability for wide input range. Use Value: SOT583 footprint and 55°C/W θJA enable thermal management in sealed enclosures without heatsinks. |
| Electronic Cigarette Power Stage | Avionics Point-of-Load Regulator |
|
Use Scenario: Battery-powered boost converter (3.2–4.2V Li-ion input) delivering regulated 5–12V to heating coil with rapid transient response. IC Role / Device Role / Timing Role: Low-quiescent-current (150µA) gate driver enabling >200-hour standby life while supporting burst-mode PWM control. Use Value: 4.5–12V VCC range eliminates need for auxiliary bias rail; integrated bootstrap diode reduces component count to <10. |
Use Scenario: MIL-STD-704 compliant 270V DC-to-28V DC converter in aircraft subsystems requiring high reliability and radiation-tolerant design practices. IC Role / Device Role / Timing Role: Robust gate driver with 150°C thermal shutdown and 1000V HBM ESD rating for harsh electrical environments. Use Value: Dual UVLO protection prevents erratic switching during input transients; SOT583 package supports conformal coating and vibration resistance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar half-bridge gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ1909GQL-Z | Automotive-grade AEC-Q100 qualified version with extended temperature range (–40°C to +125°C) and enhanced ESD (2kV HBM). | Required for automotive infotainment power supplies and ADAS camera modules where qualification is mandatory. | Select MPQ1909GQL-Z only if AEC-Q100 compliance and higher ESD immunity are required; otherwise MP1909GTL-Z offers identical performance at lower cost. |
| LM5109BMM/NOPB | Higher VDD max (16V), no integrated bootstrap diode, 100ns typical propagation delay, and separate IN+/IN− inputs instead of single PWM. | Suitable for industrial motor drives where discrete bootstrap design and dual-input logic flexibility are preferred. | Choose LM5109BMM/NOPB when external bootstrap control or dual-input polarity handling is needed; MP1909GTL-Z is superior for space-constrained, high-frequency consumer applications. |
Compared with MPQ1909GQL-Z, the MP1909GTL-Z trades automotive qualification for lower unit cost and identical electrical specs; versus LM5109BMM/NOPB, it gains integration (bootstrap diode, single-PWM interface) and faster switching but sacrifices input flexibility and absolute voltage margin.
Availability
MP1909GTL-Z is available at Aetrix Electronics and suitable for wireless charging transmitters, drone DC/DC converters, electronic cigarette power stages, and avionics point-of-load regulators requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for MP1909GTL-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 design centers in the US, China, and Taiwan, and global manufacturing partnerships.
The MP1909 belongs to MPS's high-frequency gate driver product line, engineered specifically for compact, high-efficiency DC/DC conversion in portable and aerospace-grade power systems where integration, thermal density, and MHz-range operation are critical.
FAQ
What is the maximum allowable BST–SW voltage for MP1909GTL-Z?
The absolute maximum BST–SW voltage is +50V, with recommended operating limit at +35V for continuous use. Exceeding 35V may increase bootstrap diode stress and reduce long-term reliability; the device includes internal clamping to prevent damage up to 45V for <10ns transients.
Can MP1909GTL-Z drive GaN HEMTs?
Yes - its 10ns rise/fall times, 4A low-side sink capability, and 2.2MHz switching support fast-switching GaN devices. However, external gate resistors may be needed to dampen ringing, and layout must minimize loop inductance given GaN's sensitivity to parasitic oscillation.
Does MP1909GTL-Z require an external bootstrap diode?
No - it integrates a low-VF bootstrap diode (0.2V @ 100µA) that eliminates the need for an external diode in most applications. This reduces component count and PCB area, though designers may add an external Schottky diode for ultra-high-reliability or high-temperature (>105°C) operation.
How does adaptive dead-time control work in MP1909GTL-Z?
The IC monitors the low-side FET's VGS voltage during turn-off and uses level-shifted feedback to delay high-side turn-on until the low-side FET is fully off. This dynamic adjustment replaces fixed dead-time circuits, minimizing unnecessary delay and reducing switching losses across load conditions.
What is the minimum pulse width supported at the PWM input?
The minimum valid PWM pulse width is 50ns - guaranteed by design characterization. Pulses shorter than this may not reliably toggle the output drivers due to internal propagation delays and filtering; for 2.2MHz operation, this corresponds to ≤2.3% duty cycle resolution.
Is MP1909GTL-Z RoHS and halogen-free compliant?
Yes - MP1909GTL-Z is lead-free, halogen-free, and fully compliant with the EU RoHS Directive 2011/65/EU. MPS confirms green status on its official website under Quality Assurance documentation, with material declarations available upon request.
What is the recommended BST capacitor value and placement?
A 0.1µF ceramic capacitor is recommended between BST and SW pins, placed within 2mm of the IC with minimal trace length. A 4.7Ω series resistor between BST and the capacitor is advised to dampen ringing and reduce voltage spikes during high-dI/dt switching events.
MP1909GTL-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- SOT-583
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Driven Configuration:
- Half-Bridge
- Channel Type:
- Synchronous
- Number of Drivers:
- 2
- Gate Type:
- N-Channel MOSFET
- Voltage - Supply:
- 4.5V ~ 12V
- Logic Voltage - VIL, VIH:
- 0.8V, 2.2 V
- Current - Peak Output (Source, Sink):
- 2A, 4A
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- 50 V
- Rise / Fall Time (Typ):
- 10ns, 6ns
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-583
MP1909GTL-Z FAQ
1.How can I place an order for MP1909GTL-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP1909GTL-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 MP1909GTL-Z reliable?
The price and inventory of MP1909GTL-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP1909GTL-Z is usually 5 days.
3.What payment methods are accepted for MP1909GTL-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP1909GTL-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP1909GTL-Z?
MP1909GTL-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP1909GTL-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 MP1909GTL-Z?
For technical support, including MP1909GTL-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP1909GTL-Z requirements.
6.How does Aetrix verify that MP1909GTL-Z is sourced from the original manufacturer or authorized distributors?
All MP1909GTL-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 MP1909GTL-Z meets industry standards.
7.What is the process for return or replacement of MP1909GTL-Z?
All MP1909GTL-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP1909GTL-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 MP1909GTL-Z part is unused and in its original packaging.
Return procedure for MP1909GTL-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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