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Texas Instruments SM72295MAE/NOPB
- Part No.:
- SM72295MAE/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Power Management - Specialized
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SM72295MAE/NOPB.pdf
- Description:
- IC PHOTO FULL BRIDGE DR 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,011
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Product details
Overview
SM72295MAE/NOPB from Texas Instruments is a photovoltaic full-bridge gate driver IC designed to control four discrete N-channel MOSFETs in high-voltage renewable energy inverters. It delivers 3A peak gate drive current per channel, integrates 100V bootstrap diodes, and features two transconductance current sense amplifiers with externally programmable gain for input/output current monitoring in solar microinverters.
For engineers reviewing the SM72295MAE/NOPB datasheet, SM72295MAE/NOPB pinout, SM72295MAE/NOPB application, or SM72295MAE/NOPB equivalent, key selection criteria include bootstrap rail voltage capability (up to 115V), dual independent high/low-side logic inputs, PGOOD and OVP fault indicators, and SOIC-28 packaging compatible with isolated gate drive layouts.
Technical Context
The SM72295MAE/NOPB implements dual half-bridge drivers with level-shifted high-side outputs referenced to HSA/HSB nodes, supporting bootstrap operation up to 115V. Its integrated 100V-rated bootstrap diodes eliminate external diode requirements while enabling fast capacitor recharge at switching frequencies up to 200kHz.
Two independent transconductance amplifiers (SIA/SOA and SIB/SOB) provide differential current sensing with programmable gain via external resistors (e.g., 500Ω or 1kΩ), delivering buffered IIN/IOUT outputs with ±2mV offset and VDD clamping. An on-chip 3.3V/5V regulator (VDD) powers internal logic and serves as reference for OVS overvoltage detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Driver Type | Dual half-bridge MOSFET driver for full-bridge N-MOSFET configurations |
| Peak Output Current | 3A per channel - enables fast turn-on/turn-off of high-gate-charge MOSFETs |
| Bootstrap Voltage Range | Up to 115V - supports high DC-link voltages in photovoltaic inverters |
| Current Sense Accuracy | ±2mV input offset - ensures precise average current measurement for MPPT control |
| OVP Threshold | VDD ±50mV - provides accurate overvoltage shutdown referenced to internal regulator |
| UVLO Threshold | VCC rising threshold 6.9V ±0.5V - prevents operation during insufficient gate supply |
| Propagation Delay | 22–26ns - guarantees tight timing control between high/low-side switching |
| Package | SOIC-28 (DW) - surface-mount package with thermal pad-compatible footprint |
Pinout & Package
SM72295MAE/NOPB uses a 28-pin SOIC (DW) package with exposed thermal pad (not electrically connected). Pin 1 is located at top-left corner when notch faces upward. Power ground (PGND) and analog ground (AGND) are separate pins to minimize noise coupling between power and sensing circuits.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 12–14, 21, 25 | Sense amplifier inputs/outputs (SIA, SOA, IOUT, SIB, SOB, VCCA, VCCB) | Differential current sensing interface with externally set gain; VCCA/VCCB supply gate drive rails |
| 3, 4, 11 | Current sense outputs (IIN, BIN, BOUT) | Buffered low-impedance outputs for ADC interfacing or analog feedback loops |
| 6–9, 22, 24 | Logic inputs (LIA, LIB, HIA, HIB, LOA, LOB) | TTL-compatible inputs with 100–400kΩ pull-down - require explicit grounding if unused |
| 17, 18, 20, 26–28 | Power rails & bootstrap nodes (VDD, HSA, HBA, HBB, HSB) | VDD regulates internal logic; HBA/HBB supply high-side drivers; HSA/HSB connect to MOSFET sources |
| 10, 15, 23 | Fault/status outputs (PGOOD, OVP, PGND) | Open-drain indicators with internal VDD pull-ups - signal UVLO, overvoltage, and power ground return |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 100V bootstrap diodes | Eliminates external diodes and reduces board area in high-voltage bridge designs |
| Externally programmable current sense gain | Supports multiple shunt resistor values (e.g., 500Ω or 1kΩ) to scale output voltage for ADC input range |
| Independent high/low-side logic inputs | Enables asymmetric PWM control and dead-time insertion without external logic |
| VDD-regulated 3.3V/5V supply | Provides stable reference for OVS comparator and internal circuitry - bypassed with 0.1μF capacitor |
| Programmable overvoltage protection | OVS pin accepts resistor divider to set shutdown threshold - hysteresis prevents chatter near trip point |
| Power good indicator (PGOOD) | Open-drain output confirms VCC regulation status - used for system enable sequencing |
Applications
| Photovoltaic Microinverter | Grid-Tied Solar Inverter |
|---|---|
|
Use Scenario: Converts DC from single solar panel to grid-synchronized AC using full-bridge topology with transformerless design. IC Role / Device Role / Timing Role: Drives four N-MOSFETs in complementary pairs with precise timing; monitors input/output current for MPPT and protection. Use Value: Integrated bootstrap diodes and 115V rail support >600V DC-link operation; dual current sense enables bidirectional power flow monitoring. |
Use Scenario: Controls H-bridge stage in string inverters handling 800–1000V DC input from multiple PV modules. IC Role / Device Role / Timing Role: Provides isolated gate drive signals with UVLO and OVP fault signaling to MCU; senses DC-link current for overcurrent shutdown. Use Value: 3A peak drive current ensures fast MOSFET switching at 16–20kHz; PGOOD output synchronizes startup with auxiliary power rails. |
| Battery Energy Storage System (BESS) | Uninterruptible Power Supply (UPS) |
|
Use Scenario: Manages bi-directional power flow between battery stack (400–800V) and AC grid in residential BESS units. IC Role / Device Role / Timing Role: Controls full-bridge inverter/rectifier stage; feeds real-time current data to digital controller for charge/discharge regulation. Use Value: Externally programmable gain accommodates varying shunt resistor values across battery chemistries; buffered outputs reduce ADC loading. |
Use Scenario: Drives output H-bridge in online double-conversion UPS to maintain clean sine-wave output during mains failure. IC Role / Device Role / Timing Role: Delivers robust gate drive under transient load conditions; reports PGOOD status to system supervisor for fail-safe switchover. Use Value: 125°C junction rating supports operation in enclosed UPS enclosures; SOIC-28 package allows standard reflow assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar full-bridge gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC27211D | Single high/low-side driver (not dual); no integrated current sense or OVP; 4A peak drive | Lacks current sensing and protection features - requires external amplifiers and comparators | Choose when only basic gate drive is needed and sensing/protection are handled elsewhere |
| IRS2005SPBF | Half-bridge driver only; no bootstrap diodes; requires external bootstrap diodes and UVLO circuitry | Needs additional components to implement full-bridge with protection - increases BOM and layout complexity | Choose for cost-sensitive designs where external component count is acceptable |
Compared with UCC27211D and IRS2005SPBF, SM72295MAE/NOPB integrates current sensing, OVP, PGOOD, and bootstrap diodes in one SOIC-28 package - reducing component count, PCB area, and design validation effort for photovoltaic and energy storage inverters.
Availability
SM72295MAE/NOPB is available at Aetrix Electronics and suitable for photovoltaic microinverters, grid-tied solar inverters, battery energy storage systems, and uninterruptible power supplies requiring stable component supply and long-term industrial availability.
Supply support for SM72295MAE/NOPB 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
Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, specializing in analog, embedded processing, and power management technologies.
The SM72295MAE/NOPB belongs to TI's renewable-energy-grade gate driver product line, engineered specifically for high-reliability, high-voltage DC-to-AC conversion in solar and storage applications.
FAQ
What is the primary function of the SM72295MAE/NOPB in a photovoltaic inverter?
The SM72295MAE/NOPB functions as a dual half-bridge gate driver that controls four external N-channel MOSFETs in a full-bridge configuration. It provides 3A peak gate current, integrated 100V bootstrap diodes, and two transconductance current sense amplifiers - enabling efficient, protected switching and real-time current monitoring essential for MPPT and safety compliance in solar microinverters. The SM72295MAE/NOPB directly interfaces with controller PWM signals and feeds sensed current data back to the system MCU.
Does the SM72295MAE/NOPB support bootstrap operation above 100V DC-link voltage?
Yes, the SM72295MAE/NOPB supports bootstrap supply voltages up to 115V, as confirmed by its absolute maximum rating for HBA/HBB pins and recommended operating condition of HS+7V to HS+14V. This enables reliable operation with DC-link voltages exceeding 100V - common in modern photovoltaic inverters. The integrated 100V bootstrap diodes are rated for continuous conduction at these levels, eliminating need for external high-voltage diodes. The SM72295MAE/NOPB datasheet specifies this capability explicitly in both Absolute Maximum Ratings and Recommended Operating Conditions tables.
How does the SM72295MAE/NOPB implement overvoltage protection?
The SM72295MAE/NOPB implements overvoltage protection via the OVS pin, which accepts a resistor divider from the monitored voltage node. When OVS exceeds VDD by more than 50mV (with 5% hysteresis), the open-drain OVP output pulls low to signal fault condition. VDD - regulated internally at 3.3V or 5V - serves as the stable reference, ensuring consistent trip thresholds independent of external supply variation. This architecture allows precise, adjustable shutdown without external comparators. The SM72295MAE/NOPB integrates all necessary circuitry, including internal pull-up and hysteresis, within the IC.
Can the SM72295MAE/NOPB current sense amplifiers be used for both input and output current monitoring simultaneously?
Yes, the SM72295MAE/NOPB contains two independent transconductance amplifiers: one pair (SIA/SOA) for input current sensing and another (SIB/SOB) for output current sensing. Each has dedicated buffered outputs (IIN/BIN and IOUT/BOUT), programmable gain via external resistors, and ±2mV offset - enabling simultaneous, isolated monitoring of DC input and AC output currents in bidirectional converters. This dual-sensing capability is explicitly documented in the device description, pin table, and Electrical Characteristics section of the SM72295MAE/NOPB datasheet.
What is the thermal performance of the SM72295MAE/NOPB in SOIC-28 package?
The SM72295MAE/NOPB has a junction-to-ambient thermal resistance (θJA) of 60°C/W when mounted on a 2-layer JEDEC-standard board with 2 oz copper. Its maximum junction temperature is rated at 150°C, with recommended operating range from –40°C to +125°C. Power dissipation is dominated by gate drive losses (PDGATES ≈ 2·f·CL·VDD²) and bootstrap diode losses - both frequency- and load-dependent. Layout guidelines emphasize low-inductance paths and local decoupling to manage thermal rise. The SM72295MAE/NOPB thermal characteristics are validated per JEDEC JESD51 and published in the official datasheet.
SM72295MAE/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SolarMagic™
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- Photovoltaics
- Current - Supply:
- 25µA
- Voltage - Supply:
- 3V ~ 7V, 8V ~ 14V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-SOIC
SM72295MAE/NOPB FAQ
1.How can I place an order for SM72295MAE/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for SM72295MAE/NOPB 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 SM72295MAE/NOPB reliable?
The price and inventory of SM72295MAE/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM72295MAE/NOPB is usually 5 days.
3.What payment methods are accepted for SM72295MAE/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM72295MAE/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM72295MAE/NOPB?
SM72295MAE/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM72295MAE/NOPB 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 SM72295MAE/NOPB?
For technical support, including SM72295MAE/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM72295MAE/NOPB requirements.
6.How does Aetrix verify that SM72295MAE/NOPB is sourced from the original manufacturer or authorized distributors?
All SM72295MAE/NOPB 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 SM72295MAE/NOPB meets industry standards.
7.What is the process for return or replacement of SM72295MAE/NOPB?
All SM72295MAE/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with SM72295MAE/NOPB, 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 SM72295MAE/NOPB part is unused and in its original packaging.
Return procedure for SM72295MAE/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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