Overview
The TPS54526PWPR is a high-performance synchronous step-down DC-DC converter produced by Texas Instruments. This device is designed to provide a cost-effective, low-component-count solution for various power bus regulators in end equipment. It operates in the D-CAP2™ mode, which enables fast transient response without the need for external compensation components. The converter supports a wide input voltage range of 4.5 V to 18 V and can be programmed to output voltages between 0.76 V and 5.5 V, making it versatile for a range of applications.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 4.5 V to 18 V |
| Output Voltage Range | 0.76 V to 5.5 V |
| Output Current | Up to 5.5 A |
| Switching Frequency | Pseudo-constant frequency of 650 kHz |
| Package Type | 14-pin HTSSOP, 16-pin QFN |
| Operating Temperature Range | –40°C to 85°C |
| Soft Start Time | Adjustable |
| Power Good Function | Open drain output, active after soft start |
| Output Discharge | Internal 50-Ω MOSFET for output discharge |
| Current Protection | Cycle-by-cycle valley detect control circuit |
Key Features
- D-CAP2™ mode for fast transient response and low output ripple, allowing the use of ceramic output capacitors.
- Adaptive on-time control for seamless transition between PWM mode and Eco-mode™ operation, ensuring high efficiency at light loads.
- Proprietary circuit for compatibility with low ESR output capacitors, such as POSCAP, SP-CAP, and ultra-low ESR ceramic capacitors.
- Adjustable soft start time to ensure smooth control of the output voltage during startup.
- Power good function with open drain output, activated after the soft start has finished.
- Output discharge function using an internal 50-Ω MOSFET.
- Current protection with cycle-by-cycle valley detect control circuit.
Applications
The TPS54526PWPR is suitable for a variety of applications requiring high-efficiency DC-DC conversion, including but not limited to:
- Power supplies for industrial and consumer electronics.
- Point-of-load (POL) regulators in data centers and telecommunications equipment.
- Automotive systems requiring robust and efficient power conversion.
- Medical devices and equipment needing reliable and efficient power regulation.
Q & A
- What is the input voltage range of the TPS54526PWPR?
The input voltage range is 4.5 V to 18 V. - What is the maximum output current of the TPS54526PWPR?
The maximum output current is up to 5.5 A. - What is the switching frequency of the TPS54526PWPR?
The switching frequency is a pseudo-constant frequency of 650 kHz. - What types of packages are available for the TPS54526PWPR?
The device is available in 14-pin HTSSOP and 16-pin QFN packages. - What is the operating temperature range of the TPS54526PWPR?
The operating temperature range is –40°C to 85°C. - Does the TPS54526PWPR have an adjustable soft start time?
Yes, the soft start time is adjustable. - How does the power good function work on the TPS54526PWPR?
The power good function is an open drain output that becomes active after the soft start has finished and the output voltage is within -10% of the target value. - What type of current protection does the TPS54526PWPR have?
The device has cycle-by-cycle valley detect control circuit for current protection. - How does the output discharge function work on the TPS54526PWPR?
The output is discharged by an internal 50-Ω MOSFET when the EN pin is low or the controller is turned off by protection functions. - Is the TPS54526PWPR compatible with low ESR output capacitors?
Yes, it is compatible with low ESR output capacitors such as POSCAP, SP-CAP, and ultra-low ESR ceramic capacitors.
