Overview
The TPS54560-Q1, produced by Texas Instruments, is a 60-V, 5-A step-down regulator with an integrated high-side MOSFET. This device is designed for automotive applications and is capable of surviving load dump pulses up to 65 V per ISO 7637. It features current mode control, which provides simple external compensation and flexible component selection. The regulator includes a low-ripple, pulse-skip mode that reduces the no-load supply current to 146 µA, and the shutdown supply current is minimized to 2 µA when the enable pin is pulled low. The TPS54560-Q1 is available in an 8-pin thermally enhanced HSOIC PowerPAD package, enhancing thermal performance and efficiency.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 4.5 V to 60 V |
| Output Voltage Range | 0.8 V to 58.8 V |
| Output Current | 5 A |
| Switching Frequency Range | 100 kHz to 2.5 MHz |
| No-Load Supply Current | 146 µA |
| Shutdown Supply Current | 2 µA |
| Undervoltage Lockout | Internally set at 4.3 V, adjustable with external resistor divider |
| Package Type | 8-Pin HSOIC PowerPAD |
| Operating Temperature Range | -40°C to 150°C (TJ) |
| Mounting Type | Surface Mount |
Key Features
- Integrated high-side MOSFET for efficient power conversion
- Current mode control for simple external compensation and flexible component selection
- Low-ripple, pulse-skip mode to reduce no-load supply current
- Wide adjustable switching frequency range for optimizing efficiency or external component size
- Cycle-by-cycle current limit, frequency foldback, and thermal shutdown for protection during overload conditions
- Internally controlled output voltage start-up ramp to prevent overshoot
- Open-drain power-good signal to indicate output voltage within 93% to 106% of nominal voltage
Applications
- Automotive power systems, including 12-V and 24-V systems
- USB dedicated charging ports and battery chargers
- Industrial power supplies requiring high efficiency and reliability
- Other applications needing robust step-down DC-DC conversion with high current capability
Q & A
- What is the input voltage range of the TPS54560-Q1?
The input voltage range is from 4.5 V to 60 V.
- What is the maximum output current of the TPS54560-Q1?
The maximum output current is 5 A.
- How does the TPS54560-Q1 handle load dump pulses?
The device survives load dump pulses up to 65 V per ISO 7637.
- What is the no-load supply current of the TPS54560-Q1?
The no-load supply current is 146 µA.
- Can the switching frequency of the TPS54560-Q1 be adjusted?
Yes, the switching frequency range is adjustable from 100 kHz to 2.5 MHz.
- What type of package is the TPS54560-Q1 available in?
The device is available in an 8-pin thermally enhanced HSOIC PowerPAD package.
- How does the TPS54560-Q1 protect against overload conditions?
The device features cycle-by-cycle current limit, frequency foldback, and thermal shutdown for protection during overload conditions.
- What is the purpose of the undervoltage lockout in the TPS54560-Q1?
The undervoltage lockout is internally set at 4.3 V but can be increased using an external resistor divider at the enable pin.
- Does the TPS54560-Q1 have a power-good signal feature?
Yes, it includes an open-drain power-good signal that indicates the output is within 93% to 106% of its nominal voltage.
- What is the operating temperature range of the TPS54560-Q1?
The operating temperature range is from -40°C to 150°C (TJ).
