Overview
The TPS40057PWP is a high-voltage, wide-input synchronous buck controller from Texas Instruments. It is part of the TPS4005x family, which offers design flexibility and a range of user-programmable functions. This controller operates over a wide input voltage range of 8 V to 40 V and is designed for applications requiring high efficiency and robust performance. The TPS40057PWP is particularly suited for systems that need to handle prebiased outputs, ensuring safe operation by not turning on the synchronous rectifier until the high-side FET has started switching.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range (VIN) | 8 | - | 40 | V |
| Operating Temperature Range | -40 | - | 85 | °C |
| Quiescent Current (IDD) | 1.5 | 3 | - | mA |
| Switching Frequency (fOSC) | 470 | 520 | 570 | kHz |
| Feedback Input Voltage (VFB) | 0.698 | 0.7 | 0.704 | V |
| High-Level Output Source Current (IOH) | 2 | - | 4 | mA |
| Low-Level Output Sink Current (IOL) | 2 | - | 4 | mA |
| Thermal Shutdown Temperature (TSD) | 165 | - | - | °C |
| Package Type | - | - | HTSSOP (PWP) 16 pins | - |
Key Features
- Wide input voltage range of 8 V to 40 V.
- Programmable fixed-frequency up to 1 MHz voltage mode controller.
- Input voltage feedforward compensation for good line regulation and fast response to input line transients.
- Internal gate-drive outputs for high-side and synchronous N-channel MOSFETs.
- Externally synchronizable and programmable high-side sense short-circuit protection.
- Programmable closed-loop soft start and thermal shutdown.
- Support for prebiased outputs, ensuring safe operation by not turning on the synchronous rectifier until the high-side FET has started switching.
- Externally programmable current limit with pulse-by-pulse current limit and hiccup mode operation.
Applications
The TPS40057PWP is suitable for a variety of high-voltage DC-DC conversion applications, including:
- Industrial power supplies
- Telecom and networking equipment
- Automotive systems requiring high reliability and wide input voltage range
- Server and data center power supplies
- Medical devices and equipment
Q & A
- What is the input voltage range of the TPS40057PWP?
The input voltage range is from 8 V to 40 V.
- What is the maximum switching frequency of the TPS40057PWP?
The maximum switching frequency is up to 1 MHz.
- Does the TPS40057PWP support prebiased outputs?
Yes, it supports prebiased outputs by not turning on the synchronous rectifier until the high-side FET has started switching.
- What type of package does the TPS40057PWP come in?
The TPS40057PWP comes in a 16-pin HTSSOP (PWP) package.
- What is the operating temperature range of the TPS40057PWP?
The operating temperature range is from -40°C to 85°C.
- Does the TPS40057PWP have thermal shutdown protection?
Yes, it has thermal shutdown protection with a shutdown temperature of 165°C.
- Can the TPS40057PWP be externally synchronized?
Yes, it is externally synchronizable.
- What kind of current limit protection does the TPS40057PWP offer?
The TPS40057PWP offers pulse-by-pulse current limit and hiccup mode operation using an internal fault counter.
- Does the TPS40057PWP support soft start?
Yes, it supports programmable closed-loop soft start.
- What is the quiescent current of the TPS40057PWP?
The quiescent current is typically 3 mA.
