Overview
The TPS40051PWPR from Texas Instruments is a high-voltage, wide input range synchronous buck controller. It is part of the TPS4005x family, which offers significant design flexibility and is suitable for various high-power applications. This controller operates over an input voltage range of 8 V to 40 V and features a programmable fixed-frequency up to 1 MHz, making it versatile for different power management needs.
The TPS40051PWPR is particularly useful in applications requiring two-quadrant operation, as it can both source and sink output current, providing excellent transient response. It incorporates MOSFET gate drivers for external N-channel high-side and synchronous rectifier (SR) MOSFETs, and includes anti-cross conduction circuitry to prevent simultaneous high-side and synchronous rectifier conduction.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Input Voltage | 8 V to 40 V | V |
| Internal Reference Voltage | < 1% of 0.7 V | V |
| Programmable Fixed-Frequency | Up to 1 MHz | Hz |
| Package Type | 16-Pin PowerPAD™ HTSSOP | - |
| Thermal Shutdown Temperature | 165°C | °C |
| Quiescent Current | 1.5 to 3.0 mA | mA |
| Switching Frequency Accuracy | 470 to 570 kHz | kHz |
| High-Side Current Limit | Programmable | - |
| Soft-Start Time | Programmable via capacitor | - |
Key Features
- Input voltage feed-forward compensation for good line regulation and fast response to input line transients.
- Internal gate drive outputs for high-side and synchronous N-channel MOSFETs with anti-cross conduction circuitry.
- Externally synchronizable to an external supply.
- Programmable high-side current limit and closed-loop soft-start.
- Thermal shutdown and hiccup mode operation for overloads.
- Two-quadrant operation (source/sink) for excellent transient response.
Applications
- Power Modules
- Networking and Telecom Equipment
- Industrial Power Supplies
- Servers and Data Center Equipment
Q & A
- What is the operating input voltage range of the TPS40051PWPR?
The operating input voltage range is 8 V to 40 V.
- What is the maximum programmable switching frequency of the TPS40051PWPR?
The maximum programmable switching frequency is up to 1 MHz.
- Does the TPS40051PWPR support external synchronization?
- What type of package does the TPS40051PWPR come in?
The TPS40051PWPR comes in a 16-Pin PowerPAD™ HTSSOP package.
- How does the TPS40051PWPR handle thermal overloads?
The TPS40051PWPR features thermal shutdown at 165°C and hiccup mode operation for longer duration overloads.
- Can the TPS40051PWPR be used in applications requiring two-quadrant operation?
- What is the purpose of the soft-start feature in the TPS40051PWPR?
The soft-start feature, programmable via a capacitor, helps in gradually increasing the output voltage to prevent inrush currents and ensure smooth startup.
- How does the TPS40051PWPR prevent simultaneous high-side and synchronous rectifier conduction?
The gate drive logic incorporates anti-cross conduction circuitry to prevent simultaneous high-side and synchronous rectifier conduction.
- What are some common applications of the TPS40051PWPR?
- Is the TPS40051PWPR RoHS compliant?
