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Monolithic Power Systems Inc. MPQ4432GL-Z
- Part No.:
- MPQ4432GL-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 16-PowerVQFN
- Datasheet:
-
MPQ4432GL-Z.pdf
- Description:
- IC REG 2.2A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,911
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Product details
Overview
MPQ4432GL-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified, synchronous step-down DC/DC converter with integrated 90mΩ high-side and 40mΩ low-side MOSFETs, delivering 2.2A continuous output current across a 3.3V–36V input range. It features programmable switching frequency (350kHz–2.5MHz), 10μA sleep-mode quiescent current, and advanced asynchronous mode (AAM) for automotive battery systems requiring cold-crank support and ultra-low IQ operation.
For engineers reviewing the MPQ4432GL-Z datasheet, MPQ4432GL-Z pinout, MPQ4432GL-Z application, or MPQ4432GL-Z equivalent, this page delivers verified technical context on its valley-current OCP, 80ns minimum on-time, QFN-16 wettable flank package, fixed-output variants (3.3V/3.8V/5V), and CISPR25 Class 5 EMI compliance in automotive power rail designs.
Technical Context
The MPQ4432GL-Z employs current-mode control with valley-current over-current protection and hiccup-mode fault response, enabling fast transient response and robust short-circuit handling. Its dual-mode operation-selectable forced CCM or AAM-is controlled via the SYNC pin before startup, directly determining light-load efficiency strategy and ripple profile.
It integrates a precision 0.8V feedback reference with ±1% accuracy, supports external clock synchronization with in-phase or 180° out-of-phase selection via the PHASE pin, and includes low-dropout mode for automotive cold-crank (VIN down to 3.3V) while maintaining regulation. The internal 5V VCC regulator can be bypassed using the BIAS pin for improved thermal performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.3V to 36V - Supports full automotive battery range including cold-crank (4.5V) and load-dump (40V abs max). |
| Output Current | 2.2A continuous - Sustained delivery under thermal limits with θJA = 43°C/W on EV4432-L-00A PCB. |
| Quiescent Current | 10μA in sleep mode - Enables >1-year battery standby in always-on automotive modules (e.g., telematics, ADAS sensors). |
| Switching Frequency | 350kHz to 2.5MHz - Programmable via FREQ pin resistor; enables EMI optimization and compact magnetics selection. |
| Feedback Reference | 0.800V ±1% - High-accuracy reference ensures ±1.5% total output voltage tolerance across line/load/temp. |
| Min On-Time | 80ns - Enables high VIN-to-low VOUT conversion (e.g., 24V→3.3V at 2MHz) without pulse-skipping instability. |
| OCP Method | Valley-current detection - Prevents inductor saturation during overload; triggers hiccup mode for safe short-circuit recovery. |
Pinout & Package
MPQ4432GL-Z is housed in a thermally enhanced, wettable-flank QFN-16 (3mm × 4mm) package with exposed thermal pad, optimized for automotive PCB assembly and thermal dissipation (θJC = 5°C/W on EV4432-L-00A).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PHASE | Synchronization phase selector | Drives high for in-phase sync; low for 180° out-of-phase - critical for multi-phase interleaving to reduce input/output ripple. |
| 2 VIN | Main power input | Supplies internal control circuitry and high-side switch; requires local 10µF ceramic decoupling to PGND. |
| 3,10 SW | Switch node | High-frequency switching point connecting internal HS/LS FETs; must minimize loop area to suppress EMI. |
| 4,9 PGND | Power ground return | Low-impedance path for high di/dt currents; requires dedicated copper pour and multiple vias to inner ground plane. |
| 5 EN | Enable control | Digital ON/OFF control with 1.05V threshold; pulls to GND for shutdown (1µA ISHDN) or >1.2V to enable. |
| 6 SYNC | Frequency/sync mode control | Configures CCM (high) or AAM (low/floating) pre-startup; accepts 350kHz–2.5MHz external clock for EMI reduction. |
| 7 PG | Open-drain power-good indicator | Signals VOUT within ±10% of nominal after 30µs delay; requires external pull-up to VCC or BIAS for status monitoring. |
| 8 BIAS | External bias supply input | Accepts 5V–18V external source to power internal regulator - reduces die temperature by up to 25°C vs. VIN-only operation. |
| 11 BST | Bootstrap supply | Drives high-side gate via 0.1µF ceramic capacitor to SW; critical for reliable HS-FET turn-on above 10V VIN. |
| 12 VCC | Internal bias supply | 5V regulated output for control logic; requires ≥1µF ceramic decoupling to AGND for stable PWM operation. |
| 13 AGND | Analog ground reference | Separate ground for FB, SS, and error amplifier - must be star-connected to PGND at single point to avoid noise coupling. |
| 14 SS | Soft-start timing input | 10µA current source charges external capacitor; sets monotonic VOUT ramp time - prevents inrush into downstream loads. |
| 15 FB | Feedback voltage sense | Compares output against 0.8V reference; for adjustable version, connects to resistor divider; fixed versions tie directly to VOUT. |
| 16 FREQ | Frequency programming | Resistor-to-GND sets fSW: 180kΩ = 475kHz, 82kΩ = 1MHz, 27kΩ = 2.5MHz - enables precise EMI band placement. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Rated for −40°C to +125°C junction operation - validated for engine bay, infotainment, and ADAS power rails. |
| Advanced Asynchronous Mode (AAM) | Reduces light-load quiescent current to 10μA by dynamically scaling fSW - extends battery life in always-on ECUs. |
| Wettable flank QFN-16 package | Enables automated optical solder-joint inspection (AOI) for zero-defect automotive manufacturing traceability. |
| Low-dropout cold-crank mode | Maintains regulation down to VIN = 3.3V - supports start-stop systems during cranking when battery dips to 6V. |
| CISPR25 Class 5 EMI compliance | Validated with standard EMI filters per Figure 17 - meets OEM requirements for radiated/conducted emissions in vehicle cabins. |
Applications
| Infotainment Power Supply | ADAS Camera Module |
|---|---|
|
Use Scenario: Powers 5V SoC, display interface, and USB peripherals in head-unit systems with 12V/24V battery input. IC Role / Device Role: Primary buck regulator providing clean, low-noise 5V rail with PG monitoring for system boot sequencing. Use Value: AAM mode cuts standby IQ to 10μA, enabling <100μA total system sleep current - critical for EU CO₂ fleet regulations. |
Use Scenario: Supplies 3.3V to image sensor, ISP, and MIPI serializer in rear-view or surround-view cameras. IC Role / Device Role: Compact, high-efficiency step-down converter with 80ns min-on-time supporting 12V→3.3V at 2MHz. Use Value: Wettable flank package ensures AOI-verified solder joints; thermal shutdown protects against enclosure overheating in sealed housings. |
| Body Control Module (BCM) | Telematics Control Unit (TCU) |
|
Use Scenario: Regulates 3.8V rail for microcontroller, CAN transceivers, and LIN interfaces in door modules and lighting controllers. IC Role / Device Role: Fixed-output variant (MPQ4432GLE-38-AEC1) eliminates external feedback resistors - reduces BOM count and layout area. Use Value: Valley-current OCP prevents latch-up during motor surge events; hiccup mode allows self-recovery after shorted window motor wiring. |
Use Scenario: Powers LTE modem, GNSS receiver, and secure MCU in cellular-connected vehicle tracking units. IC Role / Device Role: Dual-mode regulator operating in forced CCM during data transmission (low ripple) and AAM during idle (low IQ). Use Value: 1μA shutdown current enables >5-year battery backup for GPS location logging during vehicle dormancy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4423HG-AEC1 | Lower 1.2A output current; same 3.3V–36V input; no AAM; fixed 2.2MHz fSW | Targeted at space-constrained, lower-power nodes (e.g., seat control, HVAC actuators) | Select when output current ≤1.2A and deterministic high-frequency operation is prioritized over light-load efficiency. |
| TPS543320RJER | 3.5V–18V input; 3A output; PMBus interface; no AEC-Q100 qualification | Used in industrial/commercial servers and telecom where diagnostics and digital control are required | Choose only for non-automotive designs needing telemetry, margining, or dynamic voltage scaling - not for AEC-Q100 environments. |
Compared with MPQ4432GL-Z, MPQ4423HG-AEC1 trades output capability and AAM flexibility for smaller footprint and fixed-frequency simplicity, while TPS543320RJER offers higher current and digital control but lacks automotive qualification and low-IQ sleep mode - making MPQ4432GL-Z uniquely balanced for cost-sensitive, battery-aware AEC-Q100 systems.
Availability
MPQ4432GL-Z is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, body control units, and telematics systems requiring stable component supply with AEC-Q100 traceability and long-lifecycle support.
Supply support for MPQ4432GL-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 analog and power ICs, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.
The MPQ4432 belongs to MPS's automotive-grade DC/DC converter product line, engineered specifically for harsh-environment vehicle subsystems demanding AEC-Q100 reliability, ultra-low quiescent current, and integrated EMI mitigation.
FAQ
What is the maximum allowable input voltage for MPQ4432GL-Z?
The absolute maximum input voltage is 40V, but the recommended operating range is 3.3V to 36V. Exceeding 36V risks violating the 40V absolute limit during transients like load dump, so external TVS clamping is advised for 24V systems exposed to ISO 7637-2 pulses.
Can MPQ4432GL-Z operate with a 5V input?
Yes - it supports inputs as low as 3.3V and maintains regulation in low-dropout mode. At 5V input, it can deliver full 2.2A to a 3.3V output using forced CCM, though efficiency drops slightly due to reduced duty cycle and higher conduction losses in the internal MOSFETs.
How does the PHASE pin affect multi-converter synchronization?
The PHASE pin selects whether the internal oscillator aligns in-phase or 180° out-of-phase with the external SYNC signal. For two MPQ4432GL-Z devices, setting one PHASE high and the other low enables interleaved operation - reducing input capacitor RMS current by ~30% and smoothing output ripple.
Is the BIAS pin mandatory for operation?
No - BIAS is optional. When left floating or tied to GND, the internal 5V regulator powers all circuitry from VIN. Connecting BIAS to a clean 5V–18V source (e.g., VOUT) lowers die temperature by shifting power dissipation off the VIN-to-VCC LDO, improving efficiency and thermal margin.
What failure protections are built into MPQ4432GL-Z?
It integrates valley-current OCP with hiccup-mode response, thermal shutdown at 170°C (20°C hysteresis), input UVLO (2.8V rising threshold), and PG fault indication. There is no overvoltage protection - output overvoltage relies on external feedback network integrity and upstream fuse coordination.
Does MPQ4432GL-Z support spread-spectrum frequency modulation?
No - it does not include built-in spread-spectrum modulation. EMI reduction is achieved via selectable switching frequency (350kHz–2.5MHz), external clock synchronization, optimized PCB layout, and integrated EMI filters validated to CISPR25 Class 5 in the reference design.
How is soft-start time calculated for MPQ4432GL-Z?
Soft-start time is set by an external capacitor on the SS pin: tSS ≈ (CSS × 0.8V) / 10µA. For example, a 100nF capacitor yields ~8ms ramp time. Floating SS activates the internal 0.7ms soft-start, limiting inrush current during cold-boot sequences.
MPQ4432GL-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- *
- Package/Case:
- 16-PowerVQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (3x4)
MPQ4432GL-Z FAQ
1.How can I place an order for MPQ4432GL-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4432GL-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 MPQ4432GL-Z reliable?
The price and inventory of MPQ4432GL-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ4432GL-Z is usually 5 days.
3.What payment methods are accepted for MPQ4432GL-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4432GL-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4432GL-Z?
MPQ4432GL-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4432GL-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 MPQ4432GL-Z?
For technical support, including MPQ4432GL-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4432GL-Z requirements.
6.How does Aetrix verify that MPQ4432GL-Z is sourced from the original manufacturer or authorized distributors?
All MPQ4432GL-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 MPQ4432GL-Z meets industry standards.
7.What is the process for return or replacement of MPQ4432GL-Z?
All MPQ4432GL-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4432GL-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 MPQ4432GL-Z part is unused and in its original packaging.
Return procedure for MPQ4432GL-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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