具有集成 Mosfet 驅(qū)動器的二相同步降壓控制器
| Vin (Min) (V) | 1 |
| Vin (Max) (V) | 40 |
| Vout (Min) (V) | 0.7 |
| Vout (Max) (V) | 5.8 |
| Iout (Max) (A) | 50 |
| Iq (Typ) (uA) | 1000 |
| Switching frequency (Min) (kHz) | 100 |
| Switching frequency (Max) (kHz) | 1000 |
| Features | Enable, Frequency Synchronization, Phase Interleaving, Power Good, Pre-Bias Start-Up, Remote Sense, Synchronous Rectification |
| Regulated outputs (#) | 2 |
| Number of phases | 2 |
| Rating | Catalog |
- Supports 5-V Output
- Two-Phase Interleaved Operation
- Operates With Pre-Biased Outputs
- 1-V to 40-V Power Stage Operation Range
- Requires VIN5 @ 50 mA (typ) Depending on External MOSFETs and Switching Frequency
- 10-μA Shutdown Current
- Programmable Switching Frequency up to 1 MHz/Phase
- Current Mode Control with Forced Current Sharing
- Better than 1% Internal 0.7-V Reference
- Resistive Divider Sets Direct Output Over Voltage Threshold.
- Programmable Input Undervoltage Lockout
- True Remote Sensing Differential Amplifier
- Resistive or Inductor’s DCR Current Sensing
- 32-Pin QFN Package
- Can Be Used with TPS40120 to Provide a 6-Bit Digitally Controlled Output
- APPLICATIONS
- Point-of-Load Converter
- Graphic Cards
- Internet Servers
- Networking Equipment
- Telecommunications Equipment
- DC Power Distributed Systems
The TPS40131 is a two-phase synchronous buck controller thatis optimized for low-output voltage, high-output current applications powered from a supply between 1 V and 40 V. A multi-phase converter offers several advantages over a single power stage including lower current ripple on the input and output capacitors, faster transient response to load steps, improved power handling capabilities, and higher system efficiency.
Each phase can be operated at a switching frequency up to 1 MHz, resulting in an effective ripple frequency of up to 2 MHz at the input and the output. The two phases operates 180 degrees out-of-phase.
