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Analog Devices Inc./Maxim Integrated MAX20412ATJC/V+T
- Part No.:
- MAX20412ATJC/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
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MAX20412ATJC/V+T.pdf
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Product details
Overview
MAX20412ATJC/V+T from Maxim Integrated is a dual-channel, AEC-Q100 qualified synchronous step-down controller IC for automotive point-of-load regulation. It operates from 3.0V to 5.5V input, delivers up to 60A (OUT1 in dual-phase) and 30A (OUT2), and achieves ±2% output voltage accuracy across load, line, and temperature. Its 2.2MHz/1.1MHz fixed-frequency PWM mode enables all-ceramic capacitor designs in space-constrained ADAS and infotainment power rails.
For engineers reviewing the MAX20412ATJC/V+T datasheet, MAX20412ATJC/V+T pinout, MAX20412ATJC/V+T application, or MAX20412ATJC/V+T equivalent, key selection considerations include I²C-programmable DVS slew rate, differential remote sensing per channel, spread-spectrum EMI reduction, and dual-phase interleaving capability for high-current automotive SoC core supplies.
Technical Context
The MAX20412ATJC/V+T implements current-mode control with programmable compensation per channel, supporting both forced-PWM and skip-mode operation. Its architecture integrates two independent buck controllers-OUT1 configurable as single- or dual-phase (via PWM1X output), OUT2 fixed single-phase-with separate enable, PGOOD, and current-sense inputs.
Each channel features dedicated differential remote-sense inputs (RS1+/RS1−, RS2+/RS2−), independent I²C slave addresses (0x70/0x71 for OUT1; 0x72/0x73 for OUT2), and factory-trimmed ±2% voltage accuracy over −40°C to +125°C. The SYNC pin supports bidirectional frequency synchronization at 1.1MHz or 2.2MHz, enabling system-level noise coordination.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 5.5V - powers directly from automotive 5V rail or post-LDO supply without external regulators. |
| Output Voltage Range | 0.25V to 1.275V in 6.25mV steps - supports modern low-voltage SoCs (e.g., 0.8V–1.2V core domains) with fine-grained DVS control. |
| Max Output Current | 60A (OUT1 dual-phase), 30A (OUT2) - enables high-current CPU/GPU core rails using external MOSFETs with low RDS(ON). |
| Switching Frequency | 2.2MHz (or 1.1MHz) fixed PWM - allows compact all-ceramic filter design; minimizes inductor size and PCB area. |
| Voltage Accuracy | ±2% over load/line/temp - ensures stable operation of sensitive automotive processors under dynamic thermal and supply conditions. |
| Operating Temperature | −40°C to +125°C ambient - meets AEC-Q100 Grade 1 requirements for under-hood and cabin electronics. |
| I²C Interface Speed | Up to 3.4MHz - enables fast dynamic voltage scaling during processor state transitions (e.g., C-states). |
Pinout & Package
MAX20412ATJC/V+T is housed in a 32-pin TQFN package (5mm × 5mm, 0.5mm pitch) with exposed thermal pad (EP = GND). The package supports high-power dissipation (θJA = 36°C/W) and automotive-grade reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Analog Ground Reference | Low-noise reference for internal error amplifier and ADC; must be separated from PGND1/PGND2 in layout. |
| EN1 / EN2 (Pins 21 / 5) | Digital Enable Inputs | Independent active-high enables allow staggered startup and channel shutdown for power sequencing. |
| PG1 / PG2 (Pins 26 / 10) | Open-Drain Power-Good Outputs | Assert after 120µs when output reaches regulation; require external pull-up for logic-level signaling. |
| RS1+/RS1− / RS2+/RS2− (Pins 23/22/7/6) | Differential Remote Sense Inputs | Compensate for IR drop across PCB traces; essential for maintaining ±2% accuracy at high load currents. |
| CS1+/CS1− / CS2+/CS2− (Pins 25/24/9/8) | Current-Sense Inputs | Measure inductor current via DCR or shunt; support gain options (16× or 32×) for flexible sensing element selection. |
| PWM1X (Pin 18) | Dual-Phase Control Output | Drives second-phase controller (e.g., MAX15492B); enables 60A capability on OUT1 with 180° phase shift. |
| SCL / SDA (Pins 4 / 3) | I²C Serial Interface | Supports up to 3.4MHz clock; ADDR pin selects between two I²C address pairs for independent channel configuration. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent buck controllers | Enables discrete power domain management: OUT1 for CPU core (dual-phase), OUT2 for GPU/I/O (single-phase), each with dedicated sensing and protection. |
| Programmable spread-spectrum modulation | Reduces peak radiated EMI by ±3% frequency dithering-critical for meeting CISPR 25 Class 5 in automotive modules. |
| I²C-controlled dynamic voltage scaling | Adjusts output voltage in 6.25mV steps with user-defined slew rate-supports DVFS for thermal and power optimization in ADAS SoCs. |
| Robust automotive protections | Includes overtemperature shutdown (165°C), cycle-by-cycle overcurrent limiting (71mV threshold), and short-circuit tolerance-no latch-off required. |
| Frequency synchronization I/O | SYNC pin operates as input (for master clock alignment) or output (to drive other converters), eliminating beat frequencies in multi-rail systems. |
Applications
| ADAS Central Processing Unit | Automotive Infotainment SoC |
|---|---|
Use Scenario: Powers vision-processing ASICs (e.g., NVIDIA DRIVE Orin) requiring 0.75V–1.0V core voltage at up to 60A with rapid load transients. IC Role / Device Role / Timing Role: Dual-phase step-down controller delivering tightly regulated core voltage with <40µs load-step response and ±2% accuracy. Use Value: Enables reliable operation under radar/LiDAR burst loads while minimizing thermal derating through interleaved phase current sharing. |
Use Scenario: Supplies application processor cores (e.g., Qualcomm SA8155P) in head-unit systems with dynamic voltage scaling based on UI workload. IC Role / Device Role / Timing Role: I²C-configurable dual-channel controller providing independent DVS for CPU and GPU domains with synchronized switching. Use Value: Reduces system power consumption by >15% during idle states via skip-mode operation and programmable soft-start timing. |
| Automotive Domain Controller | Electric Vehicle Battery Management MCU |
Use Scenario: Powers multi-core domain controllers (e.g., NXP S32G) managing vehicle networking, OTA updates, and cybersecurity functions. IC Role / Device Role / Timing Role: High-precision, AEC-Q100 qualified controller delivering 0.85V @ 40A with differential remote sensing to compensate for board trace resistance. Use Value: Ensures deterministic boot timing and runtime stability across −40°C to +125°C ambient, critical for ASIL-B functional safety compliance. |
Use Scenario: Regulates microcontroller core voltage (e.g., ST SPC58NG) in battery pack controllers where EMI must comply with ISO 11452-2. IC Role / Device Role / Timing Role: Low-noise, spread-spectrum enabled controller operating at 2.2MHz to avoid AM radio band interference. Use Value: Eliminates need for ferrite beads or shielding, reducing BOM cost and board area in space-constrained battery junction boxes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel step-down controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2965GQ-Z | Single-chip dual-output controller with integrated MOSFET drivers only; no external FET support; max 40A total output. | Lacks dual-phase interleaving and I²C DVS-suited for lower-current, cost-sensitive body electronics, not high-performance ADAS. | Select MAX20412ATJC/V+T when external MOSFETs are needed for >40A, precise DVS, or AEC-Q100 Grade 1 compliance. |
| TPS546D24RQFT | Single-channel, 60A capable with PMBus interface; requires external dual-phase controller for second rail. | No native dual-rail integration-requires two ICs for independent 60A + 30A outputs, increasing solution size and complexity. | Choose MAX20412ATJC/V+T for integrated dual-channel control, smaller footprint, and automotive-qualified spread-spectrum EMI reduction. |
Compared with MP2965GQ-Z and TPS546D24RQFT, the MAX20412ATJC/V+T uniquely combines AEC-Q100 qualification, dual independent channels with dual-phase capability on OUT1, I²C-based DVS, and spread-spectrum EMI suppression-all in a single 5mm × 5mm package optimized for automotive SoC power delivery.
Availability
MAX20412ATJC/V+T is available at Aetrix Electronics and suitable for automotive ADAS, infotainment, and domain controller designs requiring stable component supply, AEC-Q100 compliance, and high-current DC-DC regulation.
Supply support for MAX20412ATJC/V+T 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
Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for automotive, industrial, and communications markets, emphasizing high reliability and signal integrity.
The MAX20412 product line targets automotive power management, specifically high-efficiency, low-noise, AEC-Q100 qualified step-down controllers for advanced driver-assistance systems and next-generation infotainment SoCs.
FAQ
What is the maximum supported output current for each channel of the MAX20412ATJC/V+T?
The MAX20412ATJC/V+T supports up to 60A on OUT1 when configured in dual-phase mode (using PWM1X to drive a second controller like MAX15492B), and up to 30A on OUT2 in single-phase mode. These ratings assume proper thermal design, appropriate external MOSFETs with low RDS(ON), and adequate input/output capacitance per the datasheet guidelines. The IC itself does not limit current-protection thresholds are set via current-sense resistor values and gain configuration.
Does the MAX20412ATJC/V+T support dynamic voltage scaling (DVS) via I²C, and what resolution is available?
Yes, the MAX20412ATJC/V+T supports full I²C-based dynamic voltage scaling for both channels independently. Output voltage is adjustable from 0.25V to 1.275V in precise 6.25mV steps via the 7-bit VID register. Each channel has its own I²C address (e.g., 0x70/0x71 for OUT1), and slew rate is programmable to control transition speed-critical for preventing overshoot during processor state changes.
How does the MAX20412ATJC/V+T achieve electromagnetic compatibility in automotive environments?
The MAX20412ATJC/V+T incorporates three EMI-reduction features: (1) selectable 2.2MHz or 1.1MHz fixed-frequency PWM operation to move switching noise above sensitive AM/FM bands; (2) programmable spread-spectrum modulation (±3%) to lower peak radiated emissions; and (3) frequency synchronization I/O (SYNC pin) to align switching edges across multiple rails and eliminate beat frequencies. All features are automotive-validated per CISPR 25.
Is the MAX20412ATJC/V+T AEC-Q100 qualified, and which grade does it meet?
Yes, the MAX20412ATJC/V+T is AEC-Q100 qualified and meets Grade 1 specifications, with guaranteed operation from −40°C to +125°C ambient temperature. This qualification covers stress testing for accelerated environmental, thermal, and lifetime reliability-essential for under-hood and cabin-mounted automotive electronics where long-term stability is mandatory.
Can the MAX20412ATJC/V+T operate with only one output enabled, and how is channel disable implemented?
Yes, the MAX20412ATJC/V+T supports independent channel enable/disable. To disable OUT1, tie EN1 (Pin 21) low; to disable OUT2, tie EN2 (Pin 5) low. Both channels can be operated simultaneously or individually without performance degradation. When disabled, each channel enters ultra-low quiescent current mode (<10µA shutdown current), preserving system-level efficiency during idle states.
MAX20412ATJC/V+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- -
- Output Configuration:
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- Topology:
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- Output Type:
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- Number of Outputs:
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- Voltage - Input (Min):
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- Voltage - Input (Max):
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- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
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- Current - Output:
- -
- Frequency - Switching:
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- Synchronous Rectifier:
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- Operating Temperature:
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MAX20412ATJC/V+T FAQ
1.How can I place an order for MAX20412ATJC/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20412ATJC/V+T 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 MAX20412ATJC/V+T reliable?
The price and inventory of MAX20412ATJC/V+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20412ATJC/V+T is usually 5 days.
3.What payment methods are accepted for MAX20412ATJC/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20412ATJC/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20412ATJC/V+T?
MAX20412ATJC/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20412ATJC/V+T 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 MAX20412ATJC/V+T?
For technical support, including MAX20412ATJC/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20412ATJC/V+T requirements.
6.How does Aetrix verify that MAX20412ATJC/V+T is sourced from the original manufacturer or authorized distributors?
All MAX20412ATJC/V+T 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 MAX20412ATJC/V+T meets industry standards.
7.What is the process for return or replacement of MAX20412ATJC/V+T?
All MAX20412ATJC/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20412ATJC/V+T, 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 MAX20412ATJC/V+T part is unused and in its original packaging.
Return procedure for MAX20412ATJC/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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