Overview
The SM72295MA/NOPB is a Photovoltaic Full Bridge Driver integrated circuit designed and manufactured by Texas Instruments. This device is specifically tailored for driving four discrete N-type MOSFETs in a full bridge configuration, making it highly suitable for renewable energy applications, particularly in photovoltaic systems. The SM72295MA/NOPB provides dual half-bridge MOSFET drivers, each capable of delivering 3A of peak current, ensuring fast and efficient switching.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| VCCA, VCCB | -0.3 | 14 | V | |
| VDD | -0.3 | 7 | V | |
| HBA to HSA, HBB to HSB | -0.3 | 15 | V | |
| LIA, LIB, HIA, HIB, OVS | -0.3 | 7 | V | |
| LOA, LOB | -0.3 | VCC + 0.3 | V | |
| HOA, HOB | -0.3 | HB + 0.3 | V | |
| Junction Temperature | 150 | °C | ||
| Storage Temperature Range | -55 | 150 | °C | |
| Supply Current (VDD Quiescent) | 25 | 40 | μA | |
| Supply Current (VCC Quiescent) | 500 | 800 | μA | |
| Gate Driver Peak Pullup/Pulldown Current | 3 | A | ||
| Thermal Resistance (θJA) | 60 | °C/W |
Key Features
- Dual half-bridge MOSFET drivers capable of delivering 3A of peak current for fast and efficient switching.
- Designed to drive four discrete N-type MOSFETs in a full bridge configuration.
- Integrated over-voltage protection (OVP) with an open-drain output and internal pull-up resistor to VDD.
- Current sense amplifiers with external gain programming through resistors.
- Bootstrap capacitor support for high-side MOSFETs.
- Low ESR/ESL capacitor requirements for optimal performance.
- Operating temperature range from -40°C to +125°C.
- ESD protection rated at 2 kV for most pins and 1 kV for HB, HO, and HS pins.
Applications
- Photovoltaic systems, including solar inverters and solar power optimizers.
- Renewable energy systems requiring high-efficiency power conversion.
- Power supply units and DC-DC converters in various industrial and consumer applications.
- Motor control and drive systems where high-side and low-side switching is necessary.
Q & A
- What is the primary function of the SM72295MA/NOPB?
The SM72295MA/NOPB is designed to drive four discrete N-type MOSFETs in a full bridge configuration, particularly for photovoltaic and renewable energy applications.
- What is the peak current capability of the MOSFET drivers in the SM72295MA/NOPB?
The MOSFET drivers can deliver up to 3A of peak current.
- What type of protection does the SM72295MA/NOPB offer against over-voltage conditions?
The device includes an over-voltage protection (OVP) feature with an open-drain output and an internal pull-up resistor to VDD.
- How does the SM72295MA/NOPB handle current sensing?
The device includes current sense amplifiers that can be programmed using external resistors.
- What are the recommended operating conditions for VCCA and VCCB?
VCCA and VCCB should operate between +8V and +14V.
- What is the thermal resistance (θJA) of the SM72295MA/NOPB in the SOIC-28 package?
The thermal resistance (θJA) is 60°C/W.
- What is the ESD rating for most pins of the SM72295MA/NOPB?
The ESD rating for most pins is 2 kV, while HB, HO, and HS pins are rated at 1 kV.
- What are the key considerations for circuit board layout when using the SM72295MA/NOPB?
Low ESR/ESL capacitors should be placed close to the IC, and a low ESR electrolytic capacitor should be connected between the MOSFET drain and ground to prevent large voltage transients.
- What is the storage temperature range for the SM72295MA/NOPB?
The storage temperature range is from -55°C to +150°C.
- What are some common applications of the SM72295MA/NOPB?
Common applications include photovoltaic systems, renewable energy systems, power supply units, and motor control systems.
