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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Gate Drivers

Monolithic Power Systems Inc. MP1923GR-Z

Name: MP1923GR-Z
Brand: Monolithic Power Systems Inc.
SKU: MP1923GR-Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MP1923GR-Z

Manufacturer:: Monolithic Power Systems Inc.

Category:: Gate Drivers

Package:: 8-VDFN Exposed Pad

Datasheet:: MP1923GR-Z.pdf

Description:: IC GATE DRVR HALF-BRIDGE 8VDFN

Quantity:: RFQ Add To RFQ list

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Inventory:4,859

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Product details

Overview

MP1923GR-Z from Monolithic Power Systems is a high-frequency, N-channel MOSFET half-bridge gate driver with 100V switching node rating, 8A sink/7A source peak output current at 12V VDD, <5ns HS/LS propagation delay matching, integrated bootstrap diode, and independent TTL-compatible INH/INL control inputs. It drives motor inverters and telecom DC/DC converters requiring fast, matched, shoot-through-protected gate drive.

For engineers reviewing the MP1923GR-Z datasheet, MP1923GR-Z pinout, MP1923GR-Z application, or MP1923GR-Z equivalent, this page delivers verified technical context, package-specific pin functions, real-world timing performance, thermal design guidance, and validated alternative options for high-voltage half-bridge power stages.

Technical Context

The MP1923GR-Z implements dual independent gate drivers: a floating high-side channel (DRVH) referenced to SW with 120V BST voltage range and a grounded low-side channel (DRVL) referenced to VSS. Both channels feature under-voltage lockout (UVLO) with 4.5V falling threshold on VDD and 3.2V falling threshold on BST–SW, forcing outputs low during supply fault.

Its internal bootstrap diode eliminates external diode requirement, reducing BOM count. Propagation delays are tightly matched (<5ns) between HS and LS paths, enabling precise dead-time control in hard-switched topologies such as two-switch forward and active-clamp forward converters operating up to 100V input.

Key Specifications

Parameter	Value and Actual Design Meaning
V_SW Rating	100V continuous - supports telecom and avionics DC/DC inputs without derating
I_OUT Sink/Source	8A sink / 7A source at 12V VDD - drives 1nF load with 7.2ns rise time
Propagation Delay Match	<5ns HS-to-LS timing skew - enables sub-10ns dead-time implementation
Bootstrap Voltage Range	120V max (BST–SW) - accommodates high dV/dt phase-node transients
UVLO Thresholds	VDD falling: 4.5V; BST–SW falling: 3.2V - prevents erratic switching during brownout
Quiescent Current	300µA max at VDD = VBST = 12V - minimizes standby power in always-on systems
Input Compatibility	TTL logic levels (0.8V low / 2.4V high) - interfaces directly with MCU/PWM controller outputs

Pinout & Package

MP1923GR-Z is packaged in QFN-8 (4mm × 4mm) with exposed thermal pad. Pin 1 is marked by a dot or notch; the exposed pad must be soldered to VSS for thermal and electrical integrity.

Pin/Terminal	Circuit Role	Design Meaning
VDD	Primary supply rail	Powers internal logic and LS driver; requires local 0.1µF ceramic decoupling to VSS
BST	Bootstrap supply input	Connects to bootstrap capacitor anode; supplies floating high-side driver stage
DRVH	High-side gate output	Drives HS-FET gate referenced to SW node; rated for 120V BST–SW differential
SW	Switching node	HS-FET source / LS-FET drain connection point; carries full switching waveform
INH	High-side enable input	TTL-compatible control signal; high = DRVH active, low = DRVH forced low
INL	Low-side enable input	TTL-compatible control signal; high = DRVL active, low = DRVL forced low
VSS	Ground reference	Common return for LS driver and logic; must be tied to exposed pad and system ground plane
DRVL	Low-side gate output	Drives LS-FET gate referenced to VSS; 8A sink capability ensures fast turn-off

Key Features

Feature	Design Value
Integrated bootstrap diode	Reduces external component count by one diode; VF = 0.9V @ 100µA, enabling compact layout
Matched HS/LS propagation delay	<5ns skew ensures consistent timing margin across temperature and supply variation
Dual independent UVLO protection	Separate VDD and BST–SW UVLO blocks prevent shoot-through during supply sag or bootstrap depletion
1nF load switching performance	7.2ns t_RISE/5.5ns t_FALL at 12V - supports >10MHz effective switching in resonant topologies
Exposed thermal pad	QFN-8 θ_JA = 47°C/W - enables 2.66W continuous dissipation with 4-layer PCB copper pour

Applications

Motor Drivers

Telecom Half-Bridge Power Supplies

Use Scenario: Driving N-channel MOSFET half-bridge in BLDC motor inverter for industrial automation.

IC Role / Device Role / Timing Role: Provides matched, high-current gate drive to HS/LS FETs with programmable dead time via independent INH/INL signals.

Use Value: <5ns driver matching reduces timing uncertainty, enabling tighter dead-time control and minimizing conduction loss during commutation.

Use Scenario: High-efficiency 48V-input telecom DC/DC converter using two-switch forward topology.

IC Role / Device Role / Timing Role: Synchronizes HS/LS FET switching with precise propagation delay control and 100V V_SW tolerance.

Use Value: Integrated bootstrap diode and 120V BST rating eliminate external components while sustaining operation under high dV/dt transients.

Avionics DC/DC Converters

Active-Clamp Forward Converters

Use Scenario: MIL-STD-704 compliant 28V-to-5V isolated converter in airborne power management units.

IC Role / Device Role / Timing Role: Delivers robust gate drive under wide temperature (-40°C to +125°C) and input voltage (5–17V VDD) ranges.

Use Value: 300µA quiescent current and thermal shutdown (165°C) support reliability-critical avionics power sequencing.

Use Scenario: High-duty-cycle (>50%) isolated DC/DC supply for server PSUs using active-clamp forward architecture.

IC Role / Device Role / Timing Role: Drives HS/LS FETs alternately with tight timing control to reset transformer flux via CRESET.

Use Value: Independent INH/INL control allows precise overlap management, preventing core saturation while maintaining ZVS conditions.

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
MP1921GR-Z	Same QFN-8 package but no integrated bootstrap diode; 6A sink/5A source drive strength	Lacks integrated BST diode - requires external diode and increases layout complexity	Select when cost sensitivity outweighs BOM simplification and higher drive current is not required
LM5109BMAX/NOPB	SOIC-8, 100V V_SW, 1A sink/1A source, no integrated BST diode, separate VDD/V_DDH supplies	Lower drive strength and no BST diode - suited for lower-power, discrete bootstrap designs	Choose for legacy SOIC footprint compatibility where 1A drive suffices and thermal budget permits higher R_DS(on) losses

Compared with MP1923GR-Z, MP1921GR-Z trades integrated BST diode and higher drive for lower cost, while LM5109BMAX offers SOIC-8 compatibility at significantly reduced output current and added supply complexity - making MP1923GR-Z optimal for space-constrained, high-efficiency 100V half-bridge designs demanding minimal external components.

Availability

MP1923GR-Z is available at Aetrix Electronics and suitable for motor drivers, telecom power supplies, avionics DC/DC converters, and active-clamp forward converters requiring stable component supply, high-voltage robustness, and production-ready thermal performance.

Supply support for MP1923GR-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, including DC/DC converters, LED drivers, and gate drivers, with global manufacturing and quality certifications.

The MP1923 product line targets high-frequency, high-voltage half-bridge gate drive applications in telecom, industrial, and aerospace power systems - emphasizing integration, timing precision, and ruggedized operation.

FAQ

What is the maximum allowable bootstrap voltage (V_BST – V_SW) for MP1923GR-Z?

The absolute maximum BST–SW voltage is +120V, with recommended operating limit of +100V per the datasheet's V_SW rating. Exceeding 120V risks permanent damage to the internal high-side driver stage and bootstrap diode junction.

Does MP1923GR-Z require an external bootstrap diode?

No. MP1923GR-Z integrates a bootstrap diode with 0.9V forward voltage at 100µA, eliminating the need for an external diode. This reduces component count, PCB area, and parasitic inductance in the bootstrap loop.

How is shoot-through prevented in MP1923GR-Z?

Shoot-through is prevented through independent INH/INL control with built-in UVLO on both VDD and BST–SW rails. When either supply falls below its UVLO threshold, both DRVH and DRVL are forced low, ensuring both FETs remain off during undervoltage conditions.

What is the thermal resistance (θ_JA) of the QFN-8 package in MP1923GR-Z?

The QFN-8 (4mm × 4mm) package has θ_JA = 47°C/W when mounted on a standard 4-layer PCB with 2oz copper and thermal vias to inner ground planes, enabling 2.66W continuous power dissipation at 25°C ambient.

Can MP1923GR-Z drive both MOSFETs simultaneously in a two-switch forward converter?

Yes. In two-switch forward topologies, MP1923GR-Z drives HS and LS FETs simultaneously (non-overlapping), with INH and INL driven in parallel. Its 100V V_SW rating and dual UVLO ensure safe operation during input voltage surges up to 100V.

What is the minimum input pulse width required to toggle the outputs?

The minimum input pulse width (t_PW) is 50ns, guaranteed by design. Pulses shorter than this may not reliably register at the input comparators, risking incomplete or missed state transitions in high-frequency PWM applications.

MP1923GR-Z Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: MP

Package/Case:: 8-VDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: -

Driven Configuration:: Half-Bridge

Channel Type:: Independent

Number of Drivers:: 2

Gate Type:: N-Channel MOSFET

Voltage - Supply:: 5V ~ 17V

Logic Voltage - VIL, VIH:: -

Current - Peak Output (Source, Sink):: 7A, 8A

Input Type:: Non-Inverting

High Side Voltage - Max (Bootstrap):: 120 V

Rise / Fall Time (Typ):: 7.2ns, 5.5ns

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-QFN (4x4)

MP1923GR-Z FAQ

1.How can I place an order for MP1923GR-Z through Aetrix?

Please submit a Request for Quotation (RFQ) for MP1923GR-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 MP1923GR-Z reliable?

The price and inventory of MP1923GR-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP1923GR-Z is usually 5 days.

3.What payment methods are accepted for MP1923GR-Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP1923GR-Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MP1923GR-Z?

MP1923GR-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MP1923GR-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 MP1923GR-Z?

For technical support, including MP1923GR-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP1923GR-Z requirements.

6.How does Aetrix verify that MP1923GR-Z is sourced from the original manufacturer or authorized distributors?

All MP1923GR-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 MP1923GR-Z meets industry standards.

7.What is the process for return or replacement of MP1923GR-Z?

All MP1923GR-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP1923GR-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 MP1923GR-Z part is unused and in its original packaging.

Return procedure for MP1923GR-Z:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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