Overview
The TPS54810PWPR, produced by Texas Instruments, is a low-input voltage, high-output current synchronous buck PWM converter. This device integrates all required active components, making it a comprehensive solution for high-performance power supply designs. It features a true, high-performance voltage error amplifier, an under-voltage-lockout circuit, an internally or externally set slow-start circuit, and a power good output. The TPS54810 is packaged in a thermally enhanced 28-pin TSSOP (PWP) PowerPAD™ package, which eliminates the need for bulky heatsinks and aids in achieving high thermal performance.
Key Specifications
| Parameter | Test Conditions | Min | Max | Unit | |
|---|---|---|---|---|---|
| Input Voltage Range | - | -0.3 | - | 7 | V |
| Output Voltage Range | - | 0.9 | - | 3.3 | V |
| Output Current | - | - | - | 8 | A |
| Operating Frequency | - | 280 | - | 700 | kHz |
| Error Amplifier Open Loop Voltage Gain | 1 kΩ COMP to AGND | 90 | 110 | - | dB |
| Error Amplifier Unity Gain Bandwidth | Parallel 10 kΩ, 160 pF COMP to AGND | 3 | 5 | - | MHz |
| UVLO Start Threshold Voltage | - | - | - | 3.8 | V |
| UVLO Stop Threshold Voltage | - | - | - | 3.5 | V |
| Enable Threshold Voltage | - | - | - | 1.2 | V |
| Package Type | - | - | - | HTSSOP (PWP) | - |
| Operating Temperature Range | - | -40 | - | 85 | °C |
Key Features
- High-Performance Voltage Error Amplifier: Enables maximum performance under transient conditions and flexibility in choosing the output filter components.
- Under-Voltage Lockout (UVLO): Prevents start-up until the input voltage reaches 3.8 V and stops operation if the input voltage falls below 3.5 V.
- Internally or Externally Set Slow-Start Circuit: Limits in-rush currents during start-up.
- Power Good Output: Useful for processor/logic reset, fault signaling, and supply sequencing.
- Adjustable Switching Frequency: Can be set internally to 350 kHz or 550 kHz, or externally adjusted from 280 kHz to 700 kHz.
- Thermally Enhanced Package: 28-pin TSSOP (PWP) PowerPAD™ package eliminates the need for bulky heatsinks.
- External Synchronization: Allows synchronization of the PWM ramp over a frequency range of 330 kHz to 700 kHz.
Applications
- Low-Voltage, High-Density Systems: Power distribution at 5 V or 3.3 V.
- Point-of-Load Regulation: For high-performance DSPs, FPGAs, ASICs, and microprocessors.
- Broadband, Networking, and Optical Communications Infrastructure: High-performance power supply needs.
- Portable Computing/Notebook PCs: Efficient power management for portable devices.
Q & A
- What is the input voltage range of the TPS54810?
The input voltage range is from -0.3 V to 7 V.
- What is the maximum output current of the TPS54810?
The TPS54810 can provide up to 8 A of output current.
- What is the operating frequency range of the TPS54810?
The operating frequency can be set between 280 kHz and 700 kHz.
- What is the purpose of the under-voltage lockout (UVLO) circuit?
The UVLO circuit prevents the device from starting up until the input voltage reaches 3.8 V and stops operation if the input voltage falls below 3.5 V.
- How is the slow-start circuit controlled?
The slow-start circuit can be controlled internally or externally to limit in-rush currents during start-up.
- What is the function of the power good output?
The power good output is useful for processor/logic reset, fault signaling, and supply sequencing.
- What type of package does the TPS54810 use?
The TPS54810 is packaged in a thermally enhanced 28-pin TSSOP (PWP) PowerPAD™ package.
- What is the operating temperature range of the TPS54810?
The operating temperature range is from -40°C to 85°C.
- Can the switching frequency be externally adjusted?
Yes, the switching frequency can be externally adjusted from 280 kHz to 700 kHz by connecting a resistor between the RT pin and AGND.
- What is the purpose of the compensation network in the TPS54810?
The compensation network is used to stabilize the feedback loop and ensure low output ripple voltage.
