SM72442 - Programmable 4-Channel MPPT Controller | Texas Instruments
Teilenummer: SM72442 ✓ Aktiv| Menge | Stückpreis | Gesamt |
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| 1 | $0 | $0,00 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1.000 | $0 | $0,00 |
SM72442 Übersicht
An MPPT controller is a specialized power-management semiconductor that finds and tracks the photovoltaic panel operating point that produces the greatest available power. The SM72442 belongs to the controller hierarchy within DC-DC conversion and photovoltaic power management. Instead of converting panel energy by itself, it commands external power switches, inductors, capacitors, and current-sensing networks that form the buck-boost stage.
The primary function of the SM72442 is programmable MPPT control for photovoltaic solar panels. Four PWM gate-drive signals can control a four-switch buck-boost topology, while I2C permits external configuration or monitoring. According to the manufacturer datasheet, SCL and SDA can operate while pulled up to either 5 V or 3.3 V. The listed pull-up resistor range is 2 kΩ to 10 kΩ, with final selection depending on bus capacitance and trace length.
The proprietary Panel Mode allows a photovoltaic panel to connect directly to the output of a compatible power-optimizer circuit. This architecture is intended to support module-level optimization and coordinated converter control. The SM72442 can therefore serve as the intelligent control element in a larger solar-power conversion system rather than functioning as a standalone regulator.
Typical uses include photovoltaic power optimizers, solar chargers, distributed panel electronics, and four-switch buck-boost converter controllers. The external gate drivers must be selected for the required panel voltage, switching current, isolation arrangement, and protection level. The controller's four-PWM architecture offers greater topology flexibility than a conventional two-switch controller, but PCB layout and compensation must be designed for the complete converter rather than the IC alone.
A key design consideration is preserving signal integrity and common-mode performance at the gate-driver interface. Maintain short PWM routes, use suitable pull resistors on SDA and SCL, and verify all absolute maximum ratings before connecting external circuitry. The SM72442 datasheet also notes that gate-driver resistor values depend on load capacitance, trace length, and other system factors.
This product record combines verified manufacturer and distributor information with explicit data gaps, pinout and design guidance, commercial-source links, and carefully qualified replacement analysis. It is intended to help engineers identify the correct controller and verify board-level compatibility rather than infer an unqualified substitute from a similar MPPT function.
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Datenblatt ansehen →SM72442 Grenzwerte & elektrische Eigenschaften
| Product Type | Programmable maximum power point tracking controller |
| PWM Gate-Drive Output Count | 4 outputs |
| Controlled Converter Topology | 4-switch buck-boost converter |
| Nominal Package | 28-pin TSSOP |
| Communication Interface | I2C |
| SDA and SCL Pull-Up Compatibility | 5 V or 3.3 V |
| Typical SDA/SCL Pull-Up Resistor Range | 2 kΩ to 10 kΩ |
| PV Operating Feature | Panel Mode |
| PV Panel Connection Method | Direct connection to the output of a compatible power-optimizer circuit |
| Input Current Sensing | AIIN input-current-sensing function |
| Power Topology | Non-isolated DC-DC conversion controller |
| Montageart | Surface mount |
| Manufacturer Qualification Status | Not stated in the provided data |
| RoHS-Status | Not stated in the provided data |
| REACH Status | Not stated in the provided data |
| AEC-Q100 Status | Not stated in the provided data |
SM72442 28-pin tssop Pinbelegungsleitfaden
Pinbelegung für SM72442 (28-pin tssop-Gehäuse). Dieses Leistungsbauteil verfügt über Gate-, Drain- und Source-Anschlüsse. Bei nicht gepolten Gehäusen entnehmen Sie die genaue Ausrichtung von Pin 1 und Footprint-Details dem Herstellerdatenblatt. Typische Anwendungen sind Netzteilentwurf, Motoransteuerung und Lastschaltung.
Keine detaillierten Pinbelegungsdaten verfügbar für SM72442.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
SM72442 ist geeignet für 6 Anwendungs: Photovoltaic Power Optimizer, Solar Panel Charger, Four-Switch Buck-Boost Power Stage, Distributed Panel Optimization, PV Module-Level Electronics, Solar Energy Monitoring System.
Photovoltaic Power Optimizer
The SM72442 fits a photovoltaic power optimizer because it generates four PWM gate-drive signals for the required four-switch buck-boost converter and performs programmable maximum power point tracking. Place the controller beside the switching stage and connect its sensing inputs through the application network specified in the official datasheet. Its proprietary Panel Mode allows a compatible panel to connect directly to the optimizer output, which can improve system-level energy capture when the complete optimizer circuit is designed for that operating mode. The benefit is coordinated four-switch control rather than a basic two-switch regulation loop; the trade-off is that switching devices, magnetics, current sensing, protection, and PCB layout determine most of the converter's efficiency and reliability.
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Solar Panel Charger
The SM72442 can serve as the MPPT control element in a solar charger because it continuously commands an external four-switch buck-boost power stage to track available panel power. The I2C interface provides a path for configuration or system monitoring, while SDA and SCL may use pull-ups to 3.3 V or 5 V according to the datasheet. Design the charger around the panel's open-circuit voltage, short-circuit current, battery chemistry, and required charge profile. The controller contributes intelligent tracking and four-channel modulation, but charge termination, battery protection, galvanic isolation, and load behavior remain board-level responsibilities. This makes SM72442 most appropriate for customized solar systems rather than an unspecified universal charger module.
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Four-Switch Buck-Boost Power Stage
The SM72442 is directly aligned with a four-switch buck-boost topology because all four PWM gate-drive outputs can coordinate the external power devices. This topology supports controlled conversion when the input and output voltage ranges overlap in ways that can challenge a simpler regulator. Four-phase modulation also gives the designer control over transition sequencing, but dead time, switch-node transitions, inductor sizing, current sensing, and feedback compensation must be engineered together. The verified TI material confirms the topology and output count but not numerical switch frequency or power limits. Those values require the official datasheet and application design, preventing unsupported claims about efficiency or maximum converter power.
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Distributed Panel Optimization
The SM72442's Panel Mode supports a distributed architecture in which a photovoltaic panel interfaces with the output of a compatible power-optimizer circuit. This arrangement places intelligence near the panel rather than relying exclusively on a central inverter. The four PWM outputs can coordinate a four-switch converter, and I2C can provide a control path for configuration or monitoring where the wider system supports it. The principal advantage is module-level power tracking and potentially better harvest under partial shading, but actual gains depend on panel behavior, mismatch, wiring, and optimizer design. Panel Mode must not be enabled by assumption; use the compatibility conditions and circuit details in the official manufacturer documentation.
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PV Module-Level Electronics
The SM72442 is suitable for module-level electronics that need local maximum power point tracking and digital communication. Its four PWM outputs allow a compact four-switch converter implementation, while I2C can support a module controller, data logger, or supervisory system. Designers should isolate high-current switching paths from low-level communication, follow pull-up guidance of 2 kΩ to 10 kΩ typical, and select SDA/SCL pull-up voltage only when every attached device supports it. The controller reduces the need to implement MPPT entirely in firmware, but it does not by itself provide isolation, connectors, panel bypass switching, or environmental sealing. Those functions must be designed around the module mechanics and safety requirements.
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Solar Energy Monitoring System
The SM72442's I2C interface can fit into a monitored solar-conversion system where supervisory electronics coordinate operating modes or inspect converter information. The bus supports 3.3 V or 5 V pull-ups according to the verified datasheet excerpt, allowing design teams to select a rail compatible with the attached logic. This integration is useful for panel optimizers and four-switch converters, but the retrieved data does not define the exact command set, telemetry registers, or timing limits. Engineers must consult the complete official datasheet before writing firmware. Pull-up selection should account for capacitance and trace length rather than simply applying the midpoint of the 2 kΩ to 10 kΩ typical range.
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Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für SM72442 – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | SM72442MT/NOPB | SM72442 |
|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 28-pin TSSOP | 28-pin TSSOP | 28-pin TSSOP |
| Product Type | Programmable MPPT controller | Programmable MPPT controller | Programmable MPPT controller |
| PWM Gate-Drive Outputs | 4 | 4 | 4 |
| Controlled Topology | 4-switch buck-boost converter | 4-switch buck-boost converter | 4-switch buck-boost converter |
| Communication Interface | I2C | I2C | I2C |
| Photovoltaic Feature | Panel Mode | Panel Mode | Panel Mode |
| SDA/SCL Pull-Up Voltage | 3.3 V or 5 V | 3.3 V or 5 V | 3.3 V or 5 V |
| Typical Pull-Up Resistor | 2 kΩ to 10 kΩ | 2 kΩ to 10 kΩ | 2 kΩ to 10 kΩ |
Wichtigste Unterscheidungsmerkmale
- Purpose-built programmable MPPT control (vs. Generic DC-DC converter controller)
- Four-switch converter control (vs. Two-switch buck-boost controller)
- Proprietary Panel Mode (vs. Controller without documented Panel Mode)
- System digital control (vs. Standalone analog-only controller)
Designhinweise
Route the four PWM outputs as short, matched paths from the SM72442 to the external gate drivers, and keep the switching node compact on the power board. The manufacturer states that gate-driver resistor selection depends on load capacitance and trace length, so resistance cannot be chosen solely from a generic formula. Review rise time, ringing, propagation-delay differences, and dead time using the final gate-driver and power-device data.
Treat SDA and SCL as a potentially noisy digital bus inside a switching converter. The verified datasheet excerpt gives a typical pull-up range of 2 kΩ to 10 kΩ and supports pull-ups to 3.3 V or 5 V. Select the actual value from bus capacitance and trace length, confirm every connected device's voltage tolerance, and route the bus away from gate-drive and high-current switching paths.
Do not treat the SM72442 as a standalone converter or as proof that another MPPT IC is pin-compatible. The device controls four external PWM-driven switches, and its proprietary Panel Mode assumes a compatible power-optimizer architecture. Verify the 28-pin assignments, absolute maximum ratings, sensing polarity, startup behavior, compensation, and Panel Mode conditions directly from the official datasheet before fabrication.
Compliance-Informationen
The provided manufacturer and distributor excerpts do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. No compliance claim should be inferred.
