Overview
The TPS92512HVDGQT is a high-voltage, 2.5-A step-down (buck) regulator designed by Texas Instruments. This device is integrated with a high-side N-channel MOSFET and is optimized for LED lighting applications. It features a constant frequency, peak-current mode control, which enhances performance during line and load transients and simplifies external frequency compensation design. The regulator supports a wide switching frequency range of 100 kHz to 2 MHz, allowing for efficiency and size optimization of the output filter components.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Input Voltage (TPS92512HV) | 4.5 | - | 60 | V |
| Input Voltage (TPS92512) | 4.5 | - | 42 | V |
| Switching Frequency Range | 100 kHz | - | 2 MHz | - |
| Maximum Output Current | - | - | 2.5 A | - |
| Operating Junction Temperature | -40°C | - | 125°C | - |
| Thermal Shutdown Temperature | - | - | 165°C | - |
| Package Type | - | - | HVSSOP (DGQ) 10 pins | - |
Key Features
- Integrated 200-mΩ high-side N-channel MOSFET.
- Adjustable undervoltage-lock-out (UVLO).
- Dedicated PWM dimming input with a dimming frequency range of 100 Hz to 1 kHz.
- Overcurrent protection with a current limit threshold of 6 A.
- Overtemperature protection with thermal shutdown at 165°C.
- ±5% LED current accuracy.
- 0 V to 300 mV adjustable voltage reference.
Applications
The TPS92512HVDGQT is primarily designed for LED lighting applications, including but not limited to:
- General LED lighting systems
- Automotive LED lighting
- Industrial LED lighting
- Consumer electronics with LED displays or indicators
Q & A
- What is the input voltage range for the TPS92512HV?
The input voltage range for the TPS92512HV is 4.5 V to 60 V.
- What is the maximum output current of the TPS92512HVDGQT?
The maximum output current is 2.5 A.
- What is the switching frequency range of the TPS92512HVDGQT?
The switching frequency range is from 100 kHz to 2 MHz.
- Does the TPS92512HVDGQT have overcurrent protection?
Yes, it has overcurrent protection with a current limit threshold of 6 A.
- What is the thermal shutdown temperature of the TPS92512HVDGQT?
The thermal shutdown temperature is 165°C.
- What package type does the TPS92512HVDGQT come in?
The device comes in an HVSSOP (DGQ) package with 10 pins.
- What is the operating junction temperature range of the TPS92512HVDGQT?
The operating junction temperature range is from -40°C to 125°C.
- Does the TPS92512HVDGQT support PWM dimming?
Yes, it has a dedicated PWM dimming input with a dimming frequency range of 100 Hz to 1 kHz.
- How accurate is the LED current regulation of the TPS92512HVDGQT?
The LED current accuracy is ±5%.
- What is the purpose of the UVLO pin on the TPS92512HVDGQT?
The UVLO pin is used to set the minimum input voltage that the circuit operates at, providing undervoltage-lock-out protection.
