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Diodes Incorporated AP63357QZV-7
- Part No.:
- AP63357QZV-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 13-PowerVFDFN
- Datasheet:
-
AP63357QZV-7.pdf
- Description:
- IC REG BUCK ADJ 3.5A 13DFN
- Quantity:
- Payment:
- Shipping:
Inventory:128,708
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Product details
Overview
AP63357QZV-7 from Diodes Incorporated is an AEC-Q100 Grade 1 automotive synchronous buck converter delivering 3.5A continuous output from a 3.8V–32V input, featuring 450kHz fixed-frequency PWM/PFM operation, 22μA quiescent current in PFM mode, and integrated 74mΩ/40mΩ MOSFETs. It targets 12V/24V automotive power rails for infotainment and ADAS subsystems requiring low EMI and high light-load efficiency.
For engineers reviewing the AP63357QZV-7 datasheet, AP63357QZV-7 pinout, AP63357QZV-7 application, or AP63357QZV-7 equivalent, this device offers verified EMI reduction via proprietary gate drive and ±6% frequency spread spectrum, precision enable threshold (1.18V), internal loop compensation, and automotive-grade thermal shutdown (+170°C) with wettable-flank V-DFN3020-13/SWP packaging.
Technical Context
The AP63357QZV-7 employs peak current mode control with internal slope compensation to ensure stability at duty cycles >50%, and integrates a 0.8V ±1% reference with feedback accuracy maintained across –40°C to +125°C ambient. Its proprietary multi-level gate driver suppresses switching node ringing without degrading rise/fall times, directly reducing high-frequency radiated EMI.
It supports dual operating modes: forced PWM under heavy load and automatic transition to PFM below ~700mA peak inductor current, achieving up to 86% efficiency at 5mA load. The 4ms internal soft-start prevents output overshoot, while the 5MΩ internal pull-up on the open-drain PG pin simplifies power-good monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 3.8V to 32V DC - supports full automotive battery range including cold-crank (4.5V) and load-dump (32V) transients. |
| Output Current | 3.5A continuous - enables single-chip 5V/3.3V rail generation for microcontrollers, sensors, and displays in body electronics. |
| IQ (PFM) | 22μA typical - extends battery runtime in always-on modules like telematics and gateway ECUs during sleep mode. |
| fSW | 450kHz nominal (±6% FSS) - balances EMI performance and external component size; FSS spreads energy to pass CISPR 25 Class 5 radiated emissions. |
| VFB | 0.800V ±1% - enables precise output voltage setting (e.g., 5.0V ±1.5%) using standard 1% resistors without trimming. |
| RDS(ON) HS/LG | 74mΩ / 40mΩ - minimizes conduction loss at full load, supporting >90% efficiency at 2A with 12V input and 5V output. |
| Thermal Shutdown | +170°C with +25°C hysteresis - ensures robust operation in sealed enclosures (e.g., instrument clusters) without premature shutdown. |
| Package | V-DFN3020-13/SWP (Type A1) with wettable flanks - enables automated optical inspection (AOI) and improves solder joint reliability in automotive reflow processes. |
Pinout & Package
V-DFN3020-13/SWP (Type A1) is a 3mm × 2mm, 13-pin, exposed-pad package with wettable flanks for enhanced thermal dissipation and solder-joint inspection. Thermal resistance: θJA = 25°C/W (4-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power Input | Primary DC input (3.8–32V); requires local 10µF ceramic bypass to GND for noise suppression during high di/dt switching. |
| EN | Enable Control | Digital enable with 1.18V precision threshold; internal 1.5µA pull-up allows auto-start when left floating; supports UVLO programming. |
| FB | Feedback Sense | Resistive divider input referenced to 0.8V; sets output voltage as VOUT = 0.8V × (1 + R1/R2); high-impedance node for minimal loading. |
| COMP | Loop Compensation | Internal compensation node; connect to GND for default response; external RC network enables custom bandwidth/stability tuning. |
| PG | Power-Good Indicator | Open-drain output with 5MΩ internal pull-up; asserts low during soft-start, UVP, or regulation fault; drives LED or MCU interrupt. |
| BST | Bootstrap Supply | Drives high-side MOSFET gate; requires 100nF ceramic capacitor between BST and SW to sustain gate voltage during 100% duty cycle. |
| NC | No Connect | Unbonded pin; may be left floating or tied to GND for mechanical stability-no electrical function. |
| GND | Power Ground | Primary return path for high-current switching; must be connected to exposed thermal pad for optimal θJC = 5°C/W. |
| SW | Switch Node | High-frequency switching output (up to 32V swing); connects directly to inductor; layout critical for EMI and efficiency. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation with HBM ±2kV and CDM ±1kV ESD robustness-meets automotive functional safety baseline requirements. |
| Proprietary ringing-free gate driver | Eliminates >100MHz switching node oscillation without slowing edge rates, reducing radiated EMI by >10dB in 30–1000MHz band per CISPR 25 testing. |
| Frequency Spread Spectrum (FSS) | ±6% switching frequency jitter spreads spectral energy, lowering peak conducted/radiated emissions to meet stringent OEM EMI limits (e.g., GMW3172). |
| Low-dropout (LDO) mode | Enables regulation down to VIN – VOUT < 1V (e.g., 5.5V→5.0V), maintaining output stability during brown-out conditions in 12V systems. |
| Integrated protection suite | Includes cycle-by-cycle OCP (5A peak), output UVP, thermal shutdown (+170°C), and UVLO (3.08V falling)-reduces need for external supervision ICs. |
| Wettable flank package | Facilitates AOI of solder joints on bottom-side pins, improving manufacturing yield and long-term field reliability in vibration-prone automotive environments. |
Applications
| Automotive Infotainment Power | Instrument Cluster Display Supply |
|---|---|
|
Use Scenario: Powers SoC, audio codec, and touchscreen controller in head-unit systems with 12V battery input and strict EMI limits. IC Role / Device Role / Timing Role: Primary 5V/3.3V synchronous buck regulator with integrated MOSFETs and FSS-enabled EMI control. Use Value: Eliminates need for external EMI filters and discrete gate drivers, reducing BOM count by ≥4 components while passing CISPR 25 Class 5. |
Use Scenario: Supplies TFT-LCD backlight driver and microcontroller in digital instrument clusters exposed to wide temperature swings. IC Role / Device Role / Timing Role: High-efficiency, thermally robust DC-DC converter with LDO mode for seamless operation during cold-crank (4.5V). Use Value: Maintains regulated 3.3V output down to 4.8V input, preventing display flicker or MCU reset during engine start. |
| ADAS Camera Module Rail | Body Control Module (BCM) Subsystem |
|
Use Scenario: Generates clean 1.8V/2.8V rails for image sensor and ISP in forward-facing camera modules mounted near engine bay. IC Role / Device Role / Timing Role: Low-noise, high-PWM-PSRR buck converter with precision FB reference and thermal shutdown for harsh under-hood placement. Use Value: Delivers <15mVpp output ripple at 3.5A load and survives +105°C junction temperature-enabling compact, fanless camera housing. |
Use Scenario: Powers door module MCUs, LIN transceivers, and LED drivers in centralized BCM architecture with shared 12V bus. IC Role / Device Role / Timing Role: Always-on, ultra-low-IQ (22μA) buck converter supporting sleep-mode current budgets <50μA per subsystem. Use Value: Extends vehicle "key-off" battery life beyond 6 months without parasitic drain exceeding OEM specifications (e.g., Ford WCM spec). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4420AGU-AEC1-P | 4.5V–60V input, 2A output, 25μA IQ, no FSS, QFN-10 package without wettable flanks | Lacks FSS and wettable flanks; higher VIN max suits commercial truck systems but less optimized for passenger-car EMI constraints | Prefer when wider input range is required and EMI filtering can be added externally; not drop-in due to different pinout and thermal pad. |
| TPS62150AQDGSRQ1 | 3V–17V input, 1.5A output, 17μA IQ, 2.25MHz fSW, no integrated low-side MOSFET (external sync) | Higher fSW enables smaller inductors but increases switching loss; lower current rating limits use to sub-1A rails | Select for space-constrained designs needing <1mm height; requires external low-side FET and additional compensation components. |
Compared with MPQ4420AGU-AEC1-P and TPS62150AQDGSRQ1, the AP63357QZV-7 uniquely combines 32V max input, 3.5A output, ±6% FSS, wettable flanks, and 22μA PFM IQ in a single AEC-Q100 Grade 1 package-making it optimal for cost-sensitive, EMI-critical 12V automotive rails where integration and manufacturability are prioritized.
Availability
AP63357QZV-7 is available at Aetrix Electronics and suitable for automotive infotainment, instrument cluster, and ADAS camera power systems requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for AP63357QZV-7 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
Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal devices for automotive, industrial, and consumer markets, with ISO/TS 16949-certified manufacturing.
The AP63357QZV-7 belongs to Diodes' automotive-qualified power management portfolio, designed specifically for high-reliability 12V/24V DC-DC conversion in safety-critical vehicle subsystems with stringent EMI and thermal requirements.
FAQ
What is the difference between AP63356Q and AP63357Q?
The AP63356Q operates exclusively in forced PWM mode across all load conditions, ensuring constant switching frequency and predictable EMI behavior. The AP63357Q adds automatic Pulse Frequency Modulation (PFM) at light loads (<700mA peak inductor current), reducing quiescent current to 22μA and achieving up to 86% efficiency at 5mA-ideal for always-on automotive modules.
Does AP63357QZV-7 require external compensation components?
No-AP63357QZV-7 includes an integrated loop compensation network. Connecting the COMP pin directly to GND enables default stable operation with common 6.8μH inductors and 22μF output capacitors. External RC networks on COMP are optional for fine-tuning transient response in demanding applications like camera power rails.
How does the proprietary gate driver reduce EMI without sacrificing efficiency?
The multi-level gate driver actively damps high-frequency ringing on the SW node by modulating gate drive strength during voltage transitions-suppressing >100MHz oscillations-while preserving fast, controlled MOSFET turn-on/turn-off slew rates. This maintains low conduction and switching losses, enabling >90% efficiency at full load alongside CISPR 25-compliant radiated emissions.
Can AP63357QZV-7 operate with input voltage below 3.8V?
No-absolute minimum VIN is 3.8V per datasheet specifications. Below this, the internal bias circuitry fails to energize, causing UVLO activation and shutdown. During cold-crank events, system design must ensure battery voltage remains ≥3.8V at the VIN pin, typically via input clamping or pre-regulation stages.
AP63357QZV-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 13-PowerVFDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.8V
- Voltage - Input (Max):
- 32V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 31V
- Current - Output:
- 3.5A
- Frequency - Switching:
- 450kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- V-DFN3020-13/SWP (Type A1)
AP63357QZV-7 FAQ
1.How can I place an order for AP63357QZV-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP63357QZV-7 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 AP63357QZV-7 reliable?
The price and inventory of AP63357QZV-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP63357QZV-7 is usually 5 days.
3.What payment methods are accepted for AP63357QZV-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP63357QZV-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP63357QZV-7?
AP63357QZV-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP63357QZV-7 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 AP63357QZV-7?
For technical support, including AP63357QZV-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP63357QZV-7 requirements.
6.How does Aetrix verify that AP63357QZV-7 is sourced from the original manufacturer or authorized distributors?
All AP63357QZV-7 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 AP63357QZV-7 meets industry standards.
7.What is the process for return or replacement of AP63357QZV-7?
All AP63357QZV-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP63357QZV-7, 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 AP63357QZV-7 part is unused and in its original packaging.
Return procedure for AP63357QZV-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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