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Analog Devices Inc./Maxim Integrated MAX20801TPBD+
- Part No.:
- MAX20801TPBD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 10-PowerVQFN
- Datasheet:
-
MAX20801TPBD+.pdf
- Description:
- IC REG BUCK 11V 13.7A 10FCQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,541
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Product details
Overview
MAX20801TPBD+ from Maxim Integrated is a monolithic MPP tracking DC-DC converter optimized for 20–24 series-connected photovoltaic cells, delivering 13.0A max sourcing current in MPPT mode, 11.0V output-voltage limiting, and 99.9% MPPT efficiency. It replaces bypass diodes in PV modules to eliminate hot-spots and mismatch losses in rooftop solar arrays.
For engineers reviewing the MAX20801TPBD+ datasheet, MAX20801TPBD+ pinout, MAX20801TPBD+ application, or MAX20801TPBD+ equivalent, key selection criteria include its 10-pin FCQFN package, active bypass functionality, electronic voltage/current limiting, and compatibility with EL testing and standard grid-tie inverters.
Technical Context
The MAX20801TPBD+ implements a synchronous buck topology with integrated power FETs and performs MPPT using a perturb-and-observe algorithm with 0.4ms loop response time. It operates across –40°C to +150°C junction temperature and supports active bypass mode when PV+ undervoltage, overtemperature (>130°C shutdown), or current limit violation occurs.
It provides electronic voltage limiting (VOC,MAX = 11.67V–11.97V) and current limiting (IOUT,MAX = 13.7A–14.4A), both independent of irradiance and temperature. Reverse current mode enables seamless electroluminescence testing without external circuit changes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| MPPT Input Range | 6.5V to 15.5V - matches 20–24-cell string VMP under real-world irradiance/temperature |
| Max Sourcing Current (MPPT) | 13.0A - sets module-level current rating for fuse sizing and conductor derating |
| Output Voltage Limit (VOC,MAX) | 11.67V–11.97V - enables fixed, temperature-independent system voltage calculations |
| MPPT Efficiency | 99.9% - minimizes per-cell-string conversion loss during dynamic shading events |
| Peak Efficiency | 99.1% - achieved at optimal load, supporting CEC 98.7% and Euro 98.3% weighted efficiencies |
| Junction Temp Range | –40°C to +150°C - rated for embedded operation inside PV modules under extreme ambient conditions |
| Package | 10-pin FCQFN (P105A3F+1) - surface-mount footprint compatible with automated PV panel assembly |
Pinout & Package
MAX20801TPBD+ uses a 10-pin 3mm × 3mm FCQFN package with exposed thermal pad (Outline 21-100119, Land Pattern 90-100039). Thermal resistance θJC is 1°C/W on a four-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Internal power supply rail | Provides bias for control circuitry; decoupled via CVCC capacitor |
| PV− (Pins 2–3, 7–10) | PV cell-string negative input & control ground | Common return for up to 24-series cells; multiple pins reduce resistance and thermal stress |
| PV+ (Pin 4) | PV cell-string positive input | Accepts up to 18V input; includes undervoltage detection for active bypass entry |
| OUT (Pin 5) | MPPT-regulated output | Delivers electronically limited voltage/current to downstream inverter or string bus |
| VBST (Pin 6) | Bootstrap supply for high-side FET gate drive | Enables efficient synchronous buck operation without external charge pump |
Key Features
| Feature | Design Value |
|---|---|
| Active Bypass Mode | Eliminates reverse-biased bypass diode conduction loss and prevents cell hot-spots by enabling low-RDS(on) FET path while isolating cells from reverse breakdown |
| Electronic Voltage Limiting | Fixes maximum module output voltage at 11.67V–11.97V regardless of irradiance or temperature-removes need for voltage derating in system design |
| Integrated Current Limiting | Clamps output current to 13.7A–14.4A, enabling use of 15A series fuses and simplifying conductor ampacity calculations |
| EL Test Support | Seamlessly enters reverse-current mode to pass test current back into PV cells-no external switching or firmware changes required |
| Fast MPPT Response | 0.4ms loop time ensures >99.9% tracking effectiveness under fast-moving cloud transients |
Applications
| Rooftop Residential PV Arrays | Commercial Building-Integrated PV (BIPV) |
|---|---|
Use Scenario: Distributed solar installations on residential rooftops subject to partial shading from chimneys, vents, or adjacent structures. IC Role / Device Role / Timing Role: Cell-string optimizer performing per-string MPPT and active bypass to maintain full-string power output despite localized shading. Use Value: Recovers up to 25% more annual energy vs. conventional panels by eliminating mismatch loss and enabling consistent MPP operation across all strings. | Use Scenario: Solar façades and roof tiles where thermal management, reliability, and uniform appearance are critical. IC Role / Device Role / Timing Role: Embedded DC-DC converter providing voltage/current limiting and hot-spot suppression within constrained module form factor. Use Value: Extends module lifetime by reducing thermal stress and degradation-validated to 200°C junction temperature for 2 hours per IEC 61730/UL1703. |
| Utility-Scale Solar Farms | PV Module Electroluminescence Testing |
Use Scenario: Large-scale ground-mount systems requiring high DC string voltage, simplified O&M, and long-term yield predictability. IC Role / Device Role / Timing Role: String-level power optimizer enabling fixed-voltage string design and eliminating need for complex IV-curve scanning during commissioning. Use Value: Reduces balance-of-system cost by allowing higher string counts per inverter input and eliminating string-level monitoring hardware. | Use Scenario: Factory QA and field diagnostics using reverse-bias electroluminescence imaging to detect microcracks and solder failures. IC Role / Device Role / Timing Role: Bidirectional power path that automatically enters reverse-current mode without external control signals. Use Value: Enables 100% compatibility with standard EL testers-no adapter boards, firmware updates, or process requalification needed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar cell-string optimization applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20800TPBD+ | Same 10-pin FCQFN package and pinout; lower 11.2A MPPT current limit and 10.0V VOC,MAX | Targeted for 18–22-cell strings with lower power density; reduced thermal margin | Select MAX20800TPBD+ only when module power < 220W and peak current ≤ 11.2A |
| SPV1020TR | Standalone boost-type MPPT IC in SO-8; requires external MOSFETs, inductors, and sensing; no integrated voltage/current limiting | Requires full discrete DC-DC design; not qualified for embedded PV module use or EL testing | Use SPV1020TR only for custom PCB-based optimizers where size, integration, and qualification are secondary to cost |
Compared with MAX20800TPBD+, the MAX20801TPBD+ delivers higher current capability and tighter voltage limiting for larger 24-cell modules; compared with SPV1020TR, it offers full monolithic integration, AEC-Q200-aligned reliability, and out-of-the-box EL test support-reducing design cycle time by ≥6 months.
Availability
MAX20801TPBD+ is available at Aetrix Electronics and suitable for rooftop solar arrays, building-integrated photovoltaics (BIPV), and utility-scale solar farms requiring stable component supply, long-lifecycle assurance, and RoHS-compliant embedded power electronics.
Supply support for MAX20801TPBD+ 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, mixed-signal, and power management ICs for industrial, automotive, and energy applications.
The MAX20801 product line was developed specifically for embedded photovoltaic cell-string optimization-delivering monolithic, module-integrated MPPT with active bypass, voltage/current limiting, and EL test readiness.
FAQ
What is the primary function of the MAX20801TPBD+ in a photovoltaic module?
The MAX20801TPBD+ functions as a monolithic cell-string optimizer that performs maximum power point tracking (MPPT) on 20–24 series-connected PV cells. It replaces traditional bypass diodes, eliminates mismatch losses, and provides electronic voltage and current limiting-all within a single 10-pin FCQFN package embedded directly into the PV module substrate.
Does the MAX20801TPBD+ support electroluminescence (EL) testing?
Yes, the MAX20801TPBD+ natively supports EL testing through its reverse-current mode. When reverse bias is applied to the OUT pin, the device automatically disables MPPT and operates at maximum duty cycle to pass current back into the PV cells-enabling full compatibility with standard EL test equipment without external switches or firmware intervention.
What are the absolute maximum ratings for input voltage and junction temperature of the MAX20801TPBD+?
The MAX20801TPBD+ has an absolute maximum input voltage of –0.3V to 21V on PV+ and –0.3V to 21V on OUT. Its junction temperature rating is –40°C to +150°C continuous, with a short-duration limit of +200°C for up to two hours-verified per IEC 61730 and UL1703 safety standards for PV module integration.
How does the MAX20801TPBD+ handle thermal overload conditions?
The MAX20801TPBD+ features dual overtemperature thresholds: MPPT operation shuts down at 130°C, while the device remains functional up to 150°C with MPPT disabled. Above 150°C, thermal shutdown engages. During overtemperature events, it transitions to active bypass mode-maintaining low-loss conduction while protecting PV cells from hot-spot formation.
Is the MAX20801TPBD+ pin-compatible with other variants in the MAX20801 family?
Yes, the MAX20801TPBD+ shares identical pinout, package (10-pin FCQFN), and footprint with MAX20801TPBA+, MAX20801TPBB+, and MAX20801TPBC+. All variants use the same land pattern (90-100039) and outline (21-100119), enabling drop-in replacement across performance grades without PCB redesign.
MAX20801TPBD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-PowerVQFN
- Packaging:
- Tray
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.5V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 11V
- Voltage - Output (Max):
- -
- Current - Output:
- 13.7A
- Frequency - Switching:
- -
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-FCQFN (5.8x3)
MAX20801TPBD+ FAQ
1.How can I place an order for MAX20801TPBD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20801TPBD+ 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 MAX20801TPBD+ reliable?
The price and inventory of MAX20801TPBD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20801TPBD+ is usually 5 days.
3.What payment methods are accepted for MAX20801TPBD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20801TPBD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20801TPBD+?
MAX20801TPBD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20801TPBD+ 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 MAX20801TPBD+?
For technical support, including MAX20801TPBD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20801TPBD+ requirements.
6.How does Aetrix verify that MAX20801TPBD+ is sourced from the original manufacturer or authorized distributors?
All MAX20801TPBD+ 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 MAX20801TPBD+ meets industry standards.
7.What is the process for return or replacement of MAX20801TPBD+?
All MAX20801TPBD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20801TPBD+, 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 MAX20801TPBD+ part is unused and in its original packaging.
Return procedure for MAX20801TPBD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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