Overview
The TPS54294PWPR, produced by Texas Instruments, is a dual, adaptive on-time D-CAP2™ mode synchronous buck converter. This device is designed to provide efficient point-of-load regulation for a wide range of applications, including digital TV power supplies, networking home terminals, digital set-top boxes (STBs), DVD players/recorders, and gaming consoles. The TPS54294 features two integrated N-channel MOSFETs for each channel, enabling a cost-effective, low component count, and low standby current solution.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 4.5 V to 18 V | V |
| Output Voltage Range | 0.76 V to 7.0 V | V |
| Output Current per Channel | 2 A | A |
| High-Side MOSFET rDS(on) | 150 mΩ | mΩ |
| Low-Side MOSFET rDS(on) | 100 mΩ | mΩ |
| Switching Frequency | 700 kHz | kHz |
| Soft Start Time | 1.0 ms | ms |
| Package Types | 16-Pin HTSSOP, 16-Pin VQFN | |
| Operating Temperature Range | –40°C to 85°C | °C |
| Thermal Shutdown Threshold | Typically 155°C | °C |
Key Features
- Fast transient response with no external compensation components required.
- Adaptive on-time control supporting seamless transition between PWM mode and Eco-mode™ for high efficiency at light loads.
- Compatible with ceramic and low ESR output capacitors.
- Loss-less current sensing and cycle-by-cycle over-current limit control.
- Integrated boost PMOS switch and adaptive gate drivers.
- Power-good outputs with 1.5 ms delay and ±16% threshold.
- Over-current protection (OCP), over-voltage protection (OVP), under-voltage protection (UVP), under-voltage lockout (UVLO), and thermal shutdown (TSD) protections.
- Non-sinking pre-biased soft start to prevent current from being pulled from the output during startup.
Applications
- Digital TV power supplies
- Networking home terminals
- Digital set-top boxes (STBs)
- DVD players/recorders
- Gaming consoles
- Other low-power systems requiring efficient point-of-load regulation
Q & A
- What is the input voltage range of the TPS54294? The input voltage range is from 4.5 V to 18 V.
- What is the output voltage range of the TPS54294? The output voltage range is from 0.76 V to 7.0 V.
- What is the switching frequency of the TPS54294? The switching frequency is 700 kHz.
- Does the TPS54294 require external compensation components? No, the TPS54294 does not require external compensation components due to its D-CAP2™ control mode.
- What types of output capacitors are compatible with the TPS54294? The TPS54294 is compatible with ceramic and low ESR output capacitors.
- What is the soft start time of the TPS54294? The soft start time is 1.0 ms.
- What are the package options for the TPS54294? The TPS54294 is available in 16-Pin HTSSOP and 16-Pin VQFN packages.
- What is the operating temperature range of the TPS54294? The operating temperature range is from –40°C to 85°C.
- What protections are included in the TPS54294? The TPS54294 includes over-current protection (OCP), over-voltage protection (OVP), under-voltage protection (UVP), under-voltage lockout (UVLO), and thermal shutdown (TSD) protections.
- How does the power-good function work in the TPS54294? The power-good function is activated after the soft-start has finished, and it becomes high if the output voltage is within ±16% of the target voltage after a 1.5 ms delay.
