具有高級排序功能和輸出裕量的 4.5V 至 18V 同步降壓控制器
| Vin (Min) (V) | 4.5 |
| Vin (Max) (V) | 18 |
| Vout (Min) (V) | 0.7 |
| Vout (Max) (V) | 5.5 |
| Iout (Max) (A) | 20 |
| Iq (Typ) (uA) | 1800 |
| Switching frequency (Min) (kHz) | 100 |
| Switching frequency (Max) (kHz) | 600 |
| Features | Dynamic Voltage Scaling, Frequency Synchronization, Power Good, Remote Sense, Synchronous Rectification, Tracking |
| Regulated outputs (#) | 1 |
| Number of phases | 1 |
| Rating | Catalog |
- Operation over 4.5 V to 18 V Input Range
- Adjustable Frequency (Between 100 kHz and 600 kHz) Current Feedback Control
- Output Voltage Range From 0.7 V to 5.5 V
- Simultaneous, Ratiometric and Sequential Startup Sequencing
- Adaptive Gate Drive
- Remote Sensing (Via Separate GND/PGND)
- Internal Gate Drivers for N-channel MOSFETs
- Internal 5-V Regulator
- 24-Pin QFN Package
- Thermal Shutdown
- Programmable Overcurrent Protection
- Power Good Indicator
- 1%, 690-mV Reference
- Output Margining, 3% and 5%
- Programmable UVLO (with Programmable Hysteresis)
- Frequency Synchronization
- APPLICATIONS
- Servers
- Networking Equipment
- Cable Modems and Routers
- XDSL Modems and Routers
- Set-Top Boxes
- Telecommunications Equipment
- Power Supply Modules
The TPS40100 is a mid voltage, wide-input (between 4.5 V and 18 V), synchronous, step-down controller. The TPS40100 offers programmable closed loop soft-start, programmable UVLO (with programmable hysteresis), programmable inductor sensed current limit and can be synchronized to other timebases. The TPS40100 incorporates MOSFET gate drivers for external N-channel high-side and synchronous rectifier (SR) MOSFET. Gate drive logic incorporates adaptive anti-cross conduction circuitry for improved efficiency, reducing both cross conduction and diode conduction in the rectifier MOSFET. The externally programmable current limit provides a hiccup overcurrent recovery characteristic.
