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Texas Instruments SM72295MA/NOPB
- Part No.:
- SM72295MA/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Power Management - Specialized
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SM72295MA/NOPB.pdf
- Description:
- IC PHOTO FULL BRIDGE DR 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,051
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Product details
Overview
SM72295MA/NOPB from Texas Instruments is a photovoltaic full-bridge gate driver IC designed to control four discrete N-channel MOSFETs in solar inverter and renewable energy DC-AC conversion stages. It delivers 3A peak gate drive current per channel, integrates 100V bootstrap diodes, and provides two transconductance current sense amplifiers with externally programmable gain for input/output current monitoring in high-voltage bridge topologies.
For engineers reviewing the SM72295MA/NOPB datasheet, SM72295MA/NOPB pinout, SM72295MA/NOPB application, or SM72295MA/NOPB equivalent, key selection criteria include its SOIC-28 package, dual half-bridge architecture, 115V bootstrap rail capability, independent TTL-level logic inputs, and integrated overvoltage/undervoltage protection with PGOOD indication.
Technical Context
The SM72295MA/NOPB implements two independent high-side/low-side driver channels with level-shifted isolation, each supporting up to 100V HS node voltage and 115V bootstrap supply. Its internal UVLO circuitry monitors VCCA/VCCB (6.9V rising threshold) and VDD (3–7V operating range), while the OVS comparator triggers shutdown when sensed voltage exceeds VDD by >50mV.
Current sensing uses dual transconductance amplifiers (SIA/SOA and SIB/SOB inputs) with gain set by external resistors (e.g., 500Ω yields 1mS transconductance); buffered outputs (BIN/BOUT) provide low-impedance A/D interface. The integrated bootstrap diodes exhibit 0.8–1.0V forward drop at 100mA with <37ns turn-on/off time.
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 switching of high-gate-charge MOSFETs in solar inverters |
| Bootstrap Voltage Range | Up to 115V - supports high-voltage DC bus operation in photovoltaic systems |
| Current Sense Gain | Externally programmable via RI resistor - e.g., 500Ω yields 1mS transconductance for 10mV sense voltage |
| OVP Threshold Accuracy | VDD ±50mV - ensures precise overvoltage shutdown during PV string voltage surges |
| UVLO Hysteresis | 0.5V on VCCA/VCCB - prevents oscillation near supply dropout in unstable DC input conditions |
| Propagation Delay | 22–26ns - maintains tight timing alignment between high/low side drivers for reduced shoot-through risk |
| Package Thermal Resistance | 60°C/W (θJA, 2-layer board) - defines maximum power dissipation limit under convection cooling |
Pinout & Package
SM72295MA/NOPB is housed in a SOIC-28 (DW) package with exposed pad thermal enhancement. Pin 1 is located at the top-left corner of the top view; pins are numbered counter-clockwise with Pin 14 at bottom-left and Pin 28 at top-right.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 14 | SIA / SIB | High-side inputs for transconductance current sense amplifiers - connect to positive side of input/output current sense resistors |
| 2, 13 | SOA / SOB | Low-side inputs for current sense amplifiers - connect to negative side of sense resistors |
| 3, 12 | IIN / IOUT | Amplified current sense outputs - require external RL-to-ground resistor to set gain (RL/RI) |
| 4, 11 | BIN / BOUT | Buffered versions of IIN/IOUT - provide low-impedance interface to ADC without loading amplifier output |
| 6, 9, 7, 8 | LIA/LIB/HIA/HIB | TTL-compatible logic inputs - independently control low/high side drivers; unused pins must be grounded |
| 18, 28, 19, 27, 20, 26, 21, 25, 22, 24 | HSA/HSB/HOA/HOB/HBA/HBB/VCCA/VCCB/LOA/LOB | Power terminals for gate drive paths - HSA/HSB tie to MOSFET source nodes; HOA/HOB drive gates directly; VCCA/VCCB supply high-side drivers |
| 10, 15, 17, 23, 5 | PGOOD/OVP/VDD/PGND/AGND | System supervision and grounding - PGOOD indicates VDD regulation; OVP signals overvoltage event; AGND separates analog reference from power ground |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 100V bootstrap diodes | Eliminates need for external high-voltage diodes - reduces BOM count and layout area in solar bridge designs |
| Two independent current sense amplifiers | Enables simultaneous monitoring of input and output currents - critical for MPPT tracking and fault detection in bidirectional converters |
| Programmable overvoltage protection | OVS input accepts resistor divider from DC bus - allows configurable shutdown threshold without external comparator |
| Power good indicator with internal pull-up | PGOOD open-drain output simplifies system enable sequencing - asserts low when VDD falls below regulation window |
| Independent high/low side logic inputs | Permits asymmetric PWM control and dead-time insertion - essential for preventing cross-conduction in full-bridge topologies |
| Renewable energy grade qualification | Specified for -40°C to +125°C junction temperature - meets extended thermal requirements of outdoor PV installations |
Applications
| Photovoltaic Microinverters | Solar String Optimizers |
|---|---|
|
Use Scenario: Driving four N-MOSFETs in a full-bridge configuration to convert DC from individual PV panels into grid-synchronized AC. IC Role / Device Role / Timing Role: Gate driver providing isolated high-side switching control, current feedback, and OVP-triggered shutdown. Use Value: Enables efficient, compact microinverter design with integrated current sensing and protection - reducing external component count by 3+ discrete ICs. |
Use Scenario: Regulating voltage and current per PV module using DC-DC conversion with active bypass and monitoring. IC Role / Device Role / Timing Role: Dual half-bridge driver managing synchronous rectification and boost-stage switching with real-time current feedback. Use Value: Supports dynamic MPPT adjustment and module-level fault isolation - improving overall array yield by up to 25% under partial shading. |
| Energy Storage System (ESS) Bidirectional Converters | Grid-Tied Solar Inverters |
|
Use Scenario: Controlling bi-directional power flow between battery banks and AC grid using full-bridge topology with regenerative braking support. IC Role / Device Role / Timing Role: High-voltage gate driver with dual current sense channels for charge/discharge current monitoring and cycle-life optimization. Use Value: Provides accurate bidirectional current measurement without shunt duplication - enabling precise state-of-charge estimation and thermal derating. |
Use Scenario: Serving as primary gate driver in central or string inverters converting rooftop PV DC output to utility-grade AC. IC Role / Device Role / Timing Role: Full-bridge driver with integrated UVLO, PGOOD, and OVP - ensuring safe startup, brownout recovery, and overvoltage fault response. Use Value: Meets UL 1741 SA anti-islanding and IEEE 1547-2018 grid-support requirements through deterministic protection timing and rail monitoring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual half-bridge gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC27211D | Lacks integrated current sense amplifiers and bootstrap diodes; requires external components for sensing and bootstrap charging | Targeted at general-purpose motor drives rather than photovoltaic-specific protection and monitoring | Choose UCC27211D only if external sensing and protection circuitry already exists in design |
| LM5109BMAX/NOPB | Single half-bridge driver with 2A peak current; no dual-channel current sense or OVP comparator | Designed for lower-power DC-DC controllers, not full-bridge renewable energy systems | Select LM5109BMAX/NOPB for cost-sensitive, non-renewable applications where full-bridge integration is unnecessary |
Compared with UCC27211D and LM5109BMAX/NOPB, SM72295MA/NOPB uniquely combines full-bridge drive, dual current sensing, and photovoltaic-grade protection in one SOIC-28 package - eliminating six external components required by alternatives in solar inverter BOMs.
Availability
SM72295MA/NOPB is available at Aetrix Electronics and suitable for photovoltaic microinverters, solar string optimizers, energy storage system bidirectional converters, and grid-tied solar inverters requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for SM72295MA/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 leader specializing in analog, embedded processing, and power management technologies with over 90 years of innovation in industrial and energy systems.
The SM72295MA/NOPB belongs to TI's renewable energy interface portfolio, engineered specifically for high-reliability, high-voltage photovoltaic power conversion systems requiring integrated protection and precision current monitoring.
FAQ
What is the maximum bootstrap voltage supported by SM72295MA/NOPB?
The SM72295MA/NOPB supports a bootstrap supply voltage range up to 115V, enabling direct use in high-voltage photovoltaic DC bus applications up to 1000V string voltage when paired with appropriate external MOSFETs and gate resistors. This rating is confirmed in the Absolute Maximum Ratings table and validated across temperature in the Recommended Operating Conditions section of the SNVS688E datasheet.
Does SM72295MA/NOPB include built-in current sensing capability?
Yes, SM72295MA/NOPB integrates two transconductance current sense amplifiers - one for input current (SIA/SOA pins) and one for output current (SIB/SOB pins). Each amplifier's gain is set by an external resistor (RI), and outputs (IIN/IOUT) can be buffered (BIN/BOUT) for direct connection to an ADC. This eliminates the need for separate current sense ICs in solar inverter designs.
What protection features are integrated into SM72295MA/NOPB?
SM72295MA/NOPB includes overvoltage protection (OVP) triggered by the OVS pin, undervoltage lockout (UVLO) on both VCCA/VCCB (6.9V rising threshold) and VDD (3–7V operating range), and a power-good indicator (PGOOD) that signals valid VDD regulation. These protections are hardware-based and operate independently of external control logic.
Is SM72295MA/NOPB pin-compatible with other TI gate drivers like UCC27211?
No, SM72295MA/NOPB is not pin-compatible with UCC27211 or other TI gate drivers. Its SOIC-28 footprint and 28-pin assignment - including dedicated current sense inputs (SIA/SOA/SIB/SOB), buffered outputs (BIN/BOUT), and dual bootstrap rails (HBA/HBB) - are unique to the SM72295 family and optimized for full-bridge photovoltaic applications.
What is the operating temperature range for SM72295MA/NOPB?
SM72295MA/NOPB is specified for junction temperatures from –40°C to +125°C, meeting the extended thermal requirements of outdoor photovoltaic installations. This range is explicitly stated in the Recommended Operating Conditions table and verified across all electrical parameters in the Electrical Characteristics section of the datasheet.
SM72295MA/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SolarMagic™
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Last Time Buy
- 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
SM72295MA/NOPB FAQ
1.How can I place an order for SM72295MA/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for SM72295MA/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 SM72295MA/NOPB reliable?
The price and inventory of SM72295MA/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM72295MA/NOPB is usually 5 days.
3.What payment methods are accepted for SM72295MA/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM72295MA/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM72295MA/NOPB?
SM72295MA/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM72295MA/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 SM72295MA/NOPB?
For technical support, including SM72295MA/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM72295MA/NOPB requirements.
6.How does Aetrix verify that SM72295MA/NOPB is sourced from the original manufacturer or authorized distributors?
All SM72295MA/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 SM72295MA/NOPB meets industry standards.
7.What is the process for return or replacement of SM72295MA/NOPB?
All SM72295MA/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with SM72295MA/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 SM72295MA/NOPB part is unused and in its original packaging.
Return procedure for SM72295MA/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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