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Monolithic Power Systems Inc. MPQ3432GLE-AEC1-Z
- Part No.:
- MPQ3432GLE-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 13-PowerVFQFN
- Datasheet:
-
MPQ3432GLE-AEC1-Z.pdf
- Description:
- IC REG BOOST ADJ 3A 13QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,976
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Product details
Overview
MPQ3432GLE-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified, fully integrated synchronous boost converter with 6 mΩ/9.5 mΩ internal MOSFETs, 600 kHz fixed-frequency COT control, and configurable peak current limit (7–11 A) via external resistor on ILIM pin. It operates from 0.8 V to 13 V input, delivers up to 16 V output, supports 20 W average / 40 W peak load from 3.3 V input, and targets automotive power rail boosting in infotainment and ADAS subsystems.
For engineers reviewing the MPQ3432GLE-AEC1-Z datasheet, MPQ3432GLE-AEC1-Z pinout, MPQ3432GLE-AEC1-Z application, or MPQ3432GLE-AEC1-Z equivalent, this page provides verified technical context for automotive-grade DC-DC design - including MODE-selectable light-load operation (PSM/FCCM/USM), adaptive pass-through behavior, thermal shutdown at 175°C, and QFN-13 package layout constraints.
Technical Context
The MPQ3432 employs adaptive constant-off-time (COT) control with internal transconductance error amplifier (GEA = 410 μA/V, AV-EA = 300 V/V) and 0.99–1.015 V reference voltage (VREF) to regulate output across -40°C to +125°C junction temperature. Its switching cycle is governed by VIN/VOUT ratio-determined off time and COMP-voltage-controlled on time, enabling sub-65 μs enable-to-switching response.
Three distinct light-load modes are selected via MODE pin voltage: PSM (<0.7 V) enables discontinuous conduction with automatic pass-through when VIN ≈ VOUT−SET; FCCM (>1.6 V) enforces fixed 600 kHz operation with negative inductor current; USM (0.9–1.2 V or floating) clamps minimum frequency to 23 kHz to suppress audible noise while maintaining ZCD-based energy recycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.8 V to 13 V - supports direct connection to single-cell Li-ion (2.7 V start-up) and automotive battery rails with UVLO programmability. |
| Output Voltage Range | VIN to 16 V - adjustable via FB resistor divider; OVP threshold fixed at 16.5 V with 0.2 V hysteresis. |
| Switching Frequency | 600 kHz ±100 kHz - fixed quasi-constant frequency in heavy load; stretches to ≥23 kHz in USM, drops in PSM for efficiency. |
| Peak Current Limit | 7 A to 11 A - set by ILIM-to-AGND resistor (e.g., 36 kΩ → 9 A); cycle-by-cycle protection using low-side MOSFET RDS(ON) sensing. |
| Efficiency | 95% @ 3.6 VIN → 9 V/3 A - achieved via integrated 6 mΩ LS-FET and 9.5 mΩ HS-FET; no external Schottky diode required. |
| Thermal Protection | 175°C shutdown with 25°C hysteresis - protects die under sustained overload or poor PCB thermal design. |
| Operating Temp | -40°C to +125°C junction - AEC-Q100 Grade 1 qualification confirms reliability for under-hood automotive use. |
Pinout & Package
MPQ3432GLE-AEC1-Z uses a wettable-flank QFN-13 (3 mm × 4 mm) package with exposed thermal pad. Pin 1 is SW (switch node), pin 7 is PGND (power ground), and pin 6 is AGND (analog ground) - requiring separate low-impedance paths to minimize noise coupling into feedback loop.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Switch node | Drain of LS-FET and source of HS-FET; connects directly to inductor; high dV/dt node requiring tight layout and Kelvin routing. |
| 2 VDD | Bias supply | Internally regulated from VIN or VOUT; requires 4.7 μF ceramic capacitor close to pin; powers internal circuitry above 0.9 V VIN. |
| 3 SS | Soft-start | Capacitor-to-AGND sets VOUT ramp rate; prevents inrush current during startup; disables if shorted to AGND. |
| 4 COMP | Error amplifier output | Connect RC network to AGND for loop compensation; clamped at 2.6 V in PSM; drives peak current limit. |
| 5 FB | Feedback input | Resistor divider from VOUT sets output voltage; 1 V reference enables precise regulation with ±15 mV tolerance over temp. |
| 6 AGND | Analog ground | Reference for FB, COMP, and ILIM; must be isolated from PGND except at single-point star ground near IC. |
| 7 PGND | Power ground | High-current return path for LS-FET and inductor; ties to thermal pad; requires wide copper pour for thermal dissipation. |
| 8 VOUT | Boost output | HS-FET drain; supplies load and powers VDD when VOUT > VIN and VIN < 3.4 V; requires local 4.7 μF output capacitor. |
| 9 ILIM | Current limit set | Resistor-to-AGND configures peak switch current (7–11 A); lower resistance increases limit; open = default 9 A. |
| 10 MODE | Operation mode select | Floating or 0.9–1.2 V = USM; <0.7 V = PSM; >1.6 V = FCCM; determines light-load efficiency/noise tradeoff. |
| 11 EN | Enable control | Active-high; 1.23 V threshold; controls VIN UVLO; must not float - tie to VIN for auto-start or use external pull-up/down. |
| 12 VIN | Input supply | Main power input; bypass with ≥10 μF ceramic capacitor; supports 2.7 V start-up with VDD bias or 0.9 V with VDD pre-bias. |
| 13 BST | Bootstrap supply | Capacitor between BST and SW powers HS-FET gate driver; requires 0.1 μF X7R ceramic with low ESR. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable light-load mode | PSM, FCCM, or USM selected via MODE pin voltage - enables optimization of efficiency (PSM), ripple (FCCM), or acoustic noise (USM). |
| Automatic pass-through function | Engages in PSM when VIN approaches VOUT−SET - turns HS-FET fully on and LS-FET off to eliminate body-diode conduction loss. |
| Integrated power MOSFETs | 6 mΩ LS-FET and 9.5 mΩ HS-FET - eliminates external Schottky diode and reduces BOM count, footprint, and thermal stress. |
| Programmable current limit | 7–11 A range set by single ILIM-to-AGND resistor - enables precise overload protection without external sense resistor or amplifier. |
| Adaptive COT control | Fast transient response with minimal output capacitance - COMP voltage directly modulates on-time; no external compensation needed for basic designs. |
Applications
| Automotive Infotainment Power | ADAS Camera Module Boost |
|---|---|
Use Scenario: Powering 12 V display backlight and USB-C PD interface from 5 V vehicle bus in head unit. IC Role / Device Role / Timing Role: Synchronous boost converter providing regulated 12 V output with fast load-step response to dynamic backlight dimming. Use Value: 95% efficiency at 3.6 V→12 V/1.5 A reduces thermal load in confined dashboard space; AEC-Q100 Grade 1 ensures reliability over 15-year vehicle lifecycle. |
Use Scenario: Generating 8 V rail for image sensor and ISP in rear-view camera module powered by 3.3 V domain. IC Role / Device Role / Timing Role: High-efficiency step-up regulator with ultrasonic mode to avoid audible coil whine during parking assist operation. Use Value: USM operation maintains >23 kHz switching under light load, eliminating noise-sensitive environments; QFN-13 footprint fits compact camera PCB. |
| Backup Battery Supercap Charger | Telematics LTE Modem Boost |
Use Scenario: Charging 5.5 V supercapacitor bank from 3.3 V CAN bus power during ignition-off state. IC Role / Device Role / Timing Role: Programmable current-limited boost converter with soft-start and thermal foldback for safe supercap charging. Use Value: Configurable ILIM (via 36 kΩ resistor) limits charge current to 9 A, preventing supercap overvoltage; 175°C OTP prevents thermal runaway. |
Use Scenario: Supplying 5 V to LTE modem RF front-end from 3.8 V battery in telematics control unit. IC Role / Device Role / Timing Role: Automotive-grade boost IC delivering stable 5 V with low output ripple during cellular transmission bursts. Use Value: FCCM mode ensures fixed 600 kHz switching during high-current LTE transmit events, minimizing output voltage deviation and EMI spread. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61288RTJT | 4.5 V to 18 V input; 20 V max output; 12 A peak current; no MODE-selectable light-load modes; requires external compensation. | Lacks USM/PSM/FCCM flexibility; higher minimum input limits use in low-VIN automotive systems like start-stop battery monitoring. | Select when fixed 2.1 MHz frequency and higher input voltage range outweigh need for light-load noise control. |
| MAX20414ATPA/VY+ | AEC-Q100 Grade 1; 2.5 V to 16 V input; 22 V max output; 10 A peak current; I²C programmable modes and fault reporting. | Offers digital configuration and diagnostics but larger 20-pin TQFN package; higher quiescent current (25 μA vs. MPQ3432's 2 μA shutdown). | Select when system-level telemetry (OVP/OCP/OTP status) and flexible output programming justify added complexity and cost. |
Compared with TPS61288RTJT and MAX20414ATPA/VY+, MPQ3432GLE-AEC1-Z delivers superior light-load adaptability (USM/PSM/FCCM), smaller QFN-13 footprint, and lower shutdown current - making it optimal for space-constrained, acoustically sensitive automotive modules where analog configurability is preferred over digital control.
Availability
MPQ3432GLE-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera power, and telematics LTE modem boosting requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for MPQ3432GLE-AEC1-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 core expertise in DC-DC conversion, motor drivers, and LED lighting controllers.
The MPQ3432 belongs to MPS's automotive-qualified synchronous boost converter product line, designed specifically for reliable, high-efficiency voltage step-up in harsh-temperature vehicle subsystems - emphasizing low EMI, robust protection, and minimal external components.
FAQ
What is the minimum input voltage required for startup?
The MPQ3432GLE-AEC1-Z starts up from 2.7 V when VDD is unpowered, or from 0.9 V when VDD is externally biased above 2.2 V. This dual-start capability enables operation from deeply discharged batteries or auxiliary rails in automotive stop-start systems, provided the VDD bias source meets UVLO thresholds.
How does the automatic pass-through function work in PSM mode?
In PSM mode, when VIN rises within ~100 mV of the programmed VOUT−SET, VCOMP drops to the 0.5 V threshold and remains low for a set duration, triggering automatic pass-through: the HS-FET latches ON and LS-FET stays OFF, eliminating switching losses and body-diode conduction. The function exits when VOUT sags and VCOMP rises above threshold.
Can the MODE pin be left floating, and what happens?
Yes - floating the MODE pin configures ultrasonic mode (USM), which maintains switching frequency ≥23 kHz under light loads to prevent audible noise. In USM, the device avoids pulse-skipping and instead clamps minimum off time to 30 μs, enabling continuous energy recycling via HS-FET ZCD even at no load.
What is the purpose of the BST pin, and what capacitor value is recommended?
The BST pin supplies gate drive voltage to the internal high-side MOSFET via a bootstrap capacitor connected between BST and SW. A 0.1 μF X7R ceramic capacitor with ≤100 mΩ ESR is recommended and must be placed adjacent to the IC to sustain gate drive during 600 kHz switching and prevent HS-FET turn-off failure.
How is over-temperature protection implemented?
MPQ3432GLE-AEC1-Z incorporates a die-temperature sensor that triggers thermal shutdown at 175°C (±5°C), disabling switching and holding EN inactive until junction temperature falls by 25°C hysteresis. The protection is internal and does not require external components, ensuring fail-safe operation under sustained overload or inadequate heatsinking.
Is the ILIM pin compatible with standard resistor values?
Yes - the ILIM pin accepts standard E96 series resistors to set peak current from 7 A to 11 A. For example, 36.5 kΩ yields 9.0 A, 28.0 kΩ yields 10.0 A, and 46.4 kΩ yields 8.0 A. Resistor tolerance directly impacts current accuracy; 1% metal-film types are recommended for production designs.
Does the MPQ3432 support output voltages above 13 V?
Yes - the absolute maximum output voltage is 16 V, and the device regulates stably up to this level when configured with appropriate FB divider and output capacitors rated ≥16.5 V. However, efficiency declines above 13 V due to increased duty cycle and conduction losses in internal MOSFETs.
MPQ3432GLE-AEC1-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 13-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.8V
- Voltage - Input (Max):
- 13V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 16V
- Current - Output:
- 3A
- Frequency - Switching:
- 600kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 13-QFN (3x4)
MPQ3432GLE-AEC1-Z FAQ
1.How can I place an order for MPQ3432GLE-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ3432GLE-AEC1-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 MPQ3432GLE-AEC1-Z reliable?
The price and inventory of MPQ3432GLE-AEC1-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ3432GLE-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ3432GLE-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ3432GLE-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ3432GLE-AEC1-Z?
MPQ3432GLE-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ3432GLE-AEC1-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 MPQ3432GLE-AEC1-Z?
For technical support, including MPQ3432GLE-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ3432GLE-AEC1-Z requirements.
6.How does Aetrix verify that MPQ3432GLE-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ3432GLE-AEC1-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 MPQ3432GLE-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ3432GLE-AEC1-Z?
All MPQ3432GLE-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ3432GLE-AEC1-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 MPQ3432GLE-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ3432GLE-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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