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

Monolithic Power Systems Inc. MPQ18021HN-A-AEC1-LF-Z

Name: MPQ18021HN-A-AEC1-LF-Z
Brand: Monolithic Power Systems Inc.
SKU: MPQ18021HN-A-AEC1-LF-Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MPQ18021HN-A-AEC1-LF-Z

Manufacturer:: Monolithic Power Systems Inc.

Category:: Gate Drivers

Package:: 8-SOIC (0.154", 3.90mm Width) Exposed Pad

Datasheet:: MPQ18021HN-A-AEC1-LF-Z.pdf

Description:: IC GATE DRVR HALF-BRIDGE 8SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

MPQ18021HN-A-AEC1-LF-Z from Monolithic Power Systems is a 100V, 2.5A, AEC-Q100 Grade 1 qualified high-frequency half-bridge gate driver for N-channel MOSFETs. It features independent high-side and low-side control with <5ns propagation delay matching, integrated bootstrap diode, TTL-compatible inputs, and dual UVLO protection. Used in automotive DC/DC converters and half-bridge motor drivers where precise timing and robustness under 125°C junction temperature are required.

For engineers reviewing the MPQ18021HN-A-AEC1-LF-Z datasheet, MPQ18021HN-A-AEC1-LF-Z pinout, MPQ18021HN-A-AEC1-LF-Z application, or MPQ18021HN-A-AEC1-LF-Z equivalent, key selection criteria include bootstrap voltage range (100V), propagation delay (16ns typ.), gate drive matching (<5ns), SOIC-8E thermal performance (θJA = 50°C/W), and AEC-Q100 Grade 1 qualification for automotive power systems.

Technical Context

The MPQ18021HN-A-AEC1-LF-Z implements a dual-channel, independently controlled gate driver architecture with floating high-side channel referenced to SW node. Its bootstrap circuit supports up to 100V V_BST–V_SW, enabling operation in high-voltage half-bridge topologies with fast switching (≤50V/ns slew rate).

UVLO thresholds are set at 7.4–8.9V for VDD and 6.5–7.7V for BST–SW, each with 0.5–0.55V hysteresis, ensuring reliable shutdown during supply droop. The integrated bootstrap diode eliminates external diode requirement while maintaining ≤1V forward drop at 100mA.

Key Specifications

Parameter	Value and Actual Design Meaning
V_BST Range	100V max - enables direct use in 48V/60V automotive bus-derived half-bridges without level-shifting.
Propagation Delay	16ns typ. - ensures tight timing control for >1MHz switching frequencies in DC/DC converters.
Gate Drive Matching	<5ns - minimizes shoot-through risk in synchronous rectification and motor control by aligning HS/LS edge timing.
Rise/Fall Time	12ns/9ns @ 1nF load - delivers fast MOSFET turn-on/off with minimal switching loss at 12V VDD.
Quiescent Current	160µA max - reduces standby power in always-on automotive modules such as body control units.
Operating Temp	−40°C to +125°C - meets AEC-Q100 Grade 1 requirements for under-hood power electronics.
Package	SOIC-8E with exposed pad - provides 12°C/W θ_JC for thermal management in space-constrained automotive PCBs.

Pinout & Package

MPQ18021HN-A-AEC1-LF-Z uses an SOIC-8E package with exposed thermal pad on underside, requiring connection to VSS for optimal thermal performance. Pin 1 is VDD; Pin 8 is DRVL; Pin 4 is SW (switching node); Pin 2 is BST (bootstrap supply); Pin 3 is DRVH (high-side output); Pin 5 is INH; Pin 6 is INL; Pin 7 is VSS.

Pin/Terminal	Circuit Role	Design Meaning
VDD (Pin 1)	Low-side supply input	Powers internal logic and low-side driver; requires local 0.1µF decoupling to VSS.
BST (Pin 2)	Bootstrap supply node	Provides floating 100V-capable supply for high-side driver; connects via capacitor to SW.
DRVH (Pin 3)	High-side gate output	Drives N-MOSFET gate referenced to SW; capable of 2.5A peak sink/source at 12V.
SW (Pin 4)	Switching node	Common drain connection point for HS/LS MOSFETs; must withstand −1V to +100V transients.
INH (Pin 5)	High-side enable input	TTL-compatible control signal; internal 185kΩ pull-down ensures default-off state.
INL (Pin 6)	Low-side enable input	Independent TTL input; allows dead-time insertion between HS/LS activation to prevent shoot-through.
VSS (Pin 7)	Ground reference	Logic and power ground; exposed pad must be soldered to PCB ground plane for thermal and EMI integrity.
DRVL (Pin 8)	Low-side gate output	Drives N-MOSFET gate referenced to VSS; matched timing with DRVH enables precise PWM control.

Key Features

Feature	Design Value
Integrated bootstrap diode	Reduces BOM count by eliminating external diode; VF ≤1V @ 100mA enables efficient charge recycling.
Dual UVLO protection	Independent lockout on VDD and BST–SW prevents erratic gate drive during brown-out or bootstrap failure.
Matched propagation delay	<5ns difference between HS and LS channels ensures consistent dead-time implementation across temperature.
TTL-compatible inputs	Accepts 2.2–2.6V logic-high and ≤1.5V logic-low, compatible with standard microcontroller GPIO without level shifters.
AEC-Q100 Grade 1 qualification	Validated for −40°C to +125°C operation with full reliability testing per automotive stress standards.

Applications

Automotive DC/DC Converters

Electric Power Steering (EPS) Half-Bridge

Use Scenario: Step-down conversion from 48V battery to 12V auxiliary rail in mild-hybrid vehicles.

IC Role / Device Role / Timing Role: Half-bridge gate driver controlling synchronous N-MOSFETs in high-frequency (500kHz–1MHz) buck converter stage.

Use Value: 16ns propagation delay and <5ns matching ensure precise PWM edge alignment, minimizing conduction loss and improving efficiency above 95%.

Use Scenario: Driving bidirectional H-bridge for EPS motor torque assist using two MPQ18021HN-A devices.

IC Role / Device Role / Timing Role: Independent HS/LS control per bridge leg enables programmable dead-time insertion to prevent shoot-through during direction reversal.

Use Value: Integrated bootstrap diode and 100V V_BST support direct integration with 48V EPS bus, reducing component count and board area.

On-Board Charger (OBC) Auxiliary Supplies

Automotive HVAC Blower Control

Use Scenario: Isolated auxiliary power supply for OBC control ICs and gate drivers powered from high-voltage DC link.

IC Role / Device Role / Timing Role: High-side referenced gate driver in flyback or resonant half-bridge topology operating up to 100V input.

Use Value: 100V BST voltage rating and −1V to +100V SW rating allow safe operation directly from OBC DC-link without intermediate regulation.

Use Scenario: Speed-controlled blower fan in climate control system using half-bridge inverter driving 24V brushed DC motor.

IC Role / Device Role / Timing Role: Low-latency gate driver enabling variable-frequency PWM (20–100kHz) for smooth torque and acoustic noise reduction.

Use Value: 12ns/9ns rise/fall times at 1nF load deliver fast MOSFET switching with minimal EMI generation in cabin-adjacent modules.

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
MPQ18024GN-A-AEC1-Z	Same SOIC-8E package, but dual-channel with integrated dead-time generator and higher 3.5A peak current.	Designed for single-chip H-bridge control; lacks independent INH/INL flexibility of MPQ18021HN-A.	Select when dead-time hardware enforcement is preferred over MCU-based timing control.
UCC27211DPRR	120V-rated, 4A peak, no integrated bootstrap diode; requires external diode and larger layout area.	Broader industrial temp range (−40°C to +150°C), but not AEC-Q100 qualified out-of-box.	Select for non-automotive high-reliability systems needing higher drive strength and wider voltage margin.

Compared with MPQ18024GN-A-AEC1-Z and UCC27211DPRR, the MPQ18021HN-A-AEC1-LF-Z uniquely balances AEC-Q100 Grade 1 compliance, independent channel control, integrated bootstrap diode, and SOIC-8E thermal performance-making it optimal for cost-sensitive, space-constrained automotive half-bridge designs requiring precise timing and minimal external components.

Availability

MPQ18021HN-A-AEC1-LF-Z is available at Aetrix Electronics and suitable for automotive DC/DC converters, electric power steering systems, and on-board charger auxiliary supplies requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MPQ18021HN-A-AEC1-LF-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 for automotive, industrial, and consumer applications.

The MPQ18021HN-A product line delivers AEC-Q100-qualified gate drivers optimized for high-frequency, high-voltage half-bridge topologies in automotive electrification systems-including 48V mild hybrids and EPS.

FAQ

What is the maximum allowable SW node voltage swing for MPQ18021HN-A-AEC1-LF-Z?

The absolute maximum SW voltage is −5.0V to +110V, with recommended operating range of −1.0V to +100V. This allows safe operation in 48V automotive systems with transient spikes up to 100V, provided slew rate remains below 50V/ns to avoid latch-up.

Does MPQ18021HN-A-AEC1-LF-Z require an external bootstrap diode?

No. The device integrates a bootstrap diode with VF ≤1V at 100mA, eliminating the need for an external diode. This reduces component count, PCB area, and potential failure points in automotive power stages.

How is shoot-through prevented in MPQ18021HN-A-AEC1-LF-Z applications?

Shoot-through is prevented by independent INH and INL inputs, allowing MCU or PWM controller to insert programmable dead time between high-side and low-side gate signals. The <5ns propagation delay matching ensures consistent timing margins across temperature and supply variations.

What thermal design considerations apply to the SOIC-8E package?

The SOIC-8E exposes a thermal pad on the underside that must be soldered to a dedicated VSS copper pour. With θ_JA = 50°C/W and θ_JC = 12°C/W, ≥250mm² of 2oz copper connected to ≥4 thermal vias is recommended to maintain T_J ≤125°C at 2.5W dissipation.

Is MPQ18021HN-A-AEC1-LF-Z pin-compatible with earlier MPQ18021 revisions?

Yes. MPQ18021HN-A-AEC1-LF-Z maintains identical pinout, electrical characteristics, and package dimensions as MPQ18021HN-A-AEC1, with enhanced manufacturing controls for AEC-Q100 compliance. No layout changes are required for migration.

What is the minimum input pulse width supported by INH and INL?

The minimum input pulse width guaranteed to change the output is 50ns. This supports high-frequency PWM operation up to 10MHz in digital control loops, though practical switching limits are governed by propagation delay and load capacitance.

Does the device include thermal shutdown protection?

Yes. Thermal shutdown activates at 170°C junction temperature with 25°C hysteresis, forcing both DRVH and DRVL low. This protects the IC and external MOSFETs during overload or inadequate heatsinking conditions.

MPQ18021HN-A-AEC1-LF-Z Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width) Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Not Verified

Driven Configuration:: Half-Bridge

Channel Type:: Independent

Number of Drivers:: 2

Gate Type:: N-Channel MOSFET

Voltage - Supply:: 9V ~ 18V

Logic Voltage - VIL, VIH:: 1V, 2.4V

Current - Peak Output (Source, Sink):: 2.5A, 2.5A

Input Type:: Non-Inverting

High Side Voltage - Max (Bootstrap):: 115 V

Rise / Fall Time (Typ):: 12ns, 9ns

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

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOICE

MPQ18021HN-A-AEC1-LF-Z FAQ

1.How can I place an order for MPQ18021HN-A-AEC1-LF-Z through Aetrix?

Please submit a Request for Quotation (RFQ) for MPQ18021HN-A-AEC1-LF-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 MPQ18021HN-A-AEC1-LF-Z reliable?

The price and inventory of MPQ18021HN-A-AEC1-LF-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ18021HN-A-AEC1-LF-Z is usually 5 days.

3.What payment methods are accepted for MPQ18021HN-A-AEC1-LF-Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ18021HN-A-AEC1-LF-Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MPQ18021HN-A-AEC1-LF-Z?

MPQ18021HN-A-AEC1-LF-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MPQ18021HN-A-AEC1-LF-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 MPQ18021HN-A-AEC1-LF-Z?

For technical support, including MPQ18021HN-A-AEC1-LF-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ18021HN-A-AEC1-LF-Z requirements.

6.How does Aetrix verify that MPQ18021HN-A-AEC1-LF-Z is sourced from the original manufacturer or authorized distributors?

All MPQ18021HN-A-AEC1-LF-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 MPQ18021HN-A-AEC1-LF-Z meets industry standards.

7.What is the process for return or replacement of MPQ18021HN-A-AEC1-LF-Z?

All MPQ18021HN-A-AEC1-LF-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ18021HN-A-AEC1-LF-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 MPQ18021HN-A-AEC1-LF-Z part is unused and in its original packaging.

Return procedure for MPQ18021HN-A-AEC1-LF-Z:

1.Submit a request within 90 days.

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

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