Overview
The TPS40322RHBT, produced by Texas Instruments, is a dual-output or two-phase synchronous buck controller. This device is designed to provide high efficiency and flexibility in power management systems. It can be configured as either a dual-output controller or a single-output, two-phase controller, making it versatile for various applications. The controller features 180° out-of-phase operation, which reduces input current ripple and extends the lifespan of input capacitors. It supports a wide input voltage range of 3 V to 20 V and output voltage range of 0.6 V to 5.6 V, making it suitable for multiple rail systems and various power requirements.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Input Voltage Range | 3 | - | 20 | V |
| Output Voltage Range | 0.6 | - | 5.6 | V |
| Switching Frequency | 100 kHz | 500 kHz | 1 MHz | Hz |
| Operating Junction Temperature | -40 | - | 125 | °C |
| UVLO Minimum Turn-on Voltage | 1.21 | 1.24 | 1.27 | V |
| Package Type | - | - | 32-Pin VQFN | - |
| Junction-to-Ambient Thermal Resistance | - | - | 37.1 | °C/W |
Key Features
- Dual-output or two-phase synchronous buck controller
- 180° out-of-phase operation to reduce input current ripple and extend input capacitor lifespan
- Bidirectional master and slave synchronization function for evenly distributed phase shift in four-output systems
- Adjustable switching frequency from 100 kHz to 1 MHz
- Voltage mode control with input feedforward to reduce noise sensitivity
- Accurate current sharing for two-phase operation
- Individual power good outputs and enable pins for each channel
- Programmable soft-start with pre-bias start-up
- Output UV/OV protection and input undervoltage lockout
- Individual overcurrent limit setting and hiccup overcurrent protection
- Remote sense for two-phase applications and internal N-channel FET drivers
- Integrated bootstrap switches
Applications
- Multiple rail systems
- Telecom base stations
- Switcher and router networking
- xDSL broadband access
- Server and storage systems
Q & A
- What is the input voltage range of the TPS40322RHBT?
The input voltage range is from 3 V to 20 V.
- What is the output voltage range of the TPS40322RHBT?
The output voltage range is from 0.6 V to 5.6 V.
- What is the switching frequency range of the TPS40322RHBT?
The switching frequency can be adjusted from 100 kHz to 1 MHz.
- What is the purpose of the 180° out-of-phase operation in the TPS40322RHBT?
The 180° out-of-phase operation reduces input current ripple and extends the lifespan of input capacitors.
- Does the TPS40322RHBT support bidirectional synchronization?
Yes, it supports bidirectional master and slave synchronization.
- What type of control mode does the TPS40322RHBT use?
The TPS40322RHBT uses voltage mode control with input feedforward.
- Can the soft-start time be programmed on the TPS40322RHBT?
Yes, the soft-start time is programmable using a capacitor connected to the soft-start pin.
- What kind of protection features does the TPS40322RHBT have?
The device includes output UV/OV protection, input undervoltage lockout, and individual overcurrent limit setting with hiccup overcurrent protection.
- What is the package type of the TPS40322RHBT?
The device is available in a 32-Pin VQFN package.
- What are some common applications of the TPS40322RHBT?
Common applications include multiple rail systems, telecom base stations, switcher and router networking, xDSL broadband access, and server and storage systems.
