パッケージ情報
| パッケージ | ピン数 WQFN (RTW) | 24 |
| 動作温度範囲 (℃) -40 to 150 |
| パッケージ数量 | キャリア 3,000 | LARGE T&R |
TPS54A24 の特徴
- Standard 4-mm × 4-mm WQFN package
- –40°C to +150°C Operating junction temperature
- 200-kHz to 1.6-MHz Fixed switching frequency
- Peak-current-mode control
- Synchronizes to external clock
- 0.6-V Voltage reference ±0.85% over temperature
- 0.6-V to 12-V Output voltage range
- Safe start-up into prebiased output voltage
- Hiccup current limit
- Adjustable soft start and power sequencing
- Adjustable input undervoltage lockout
- Power-good output monitor for undervoltage and overvoltage
- 3-µA Shutdown current
- Output overvoltage protection
- Non-latch thermal shutdown protection
- Create a custom design using the TPS54A24 with the WEBENCH® Power Designer
TPS54A24 に関する概要
The TPS54A24 is a full-featured 17-V, 10-A synchronous step-down DC/DC converter in a standard 4 mm × 4 mm WQFN package.
The device is optimized for small solution size through high efficiency and integrating the high-side and low-side MOSFETs. Further space savings are achieved through peak-current-mode control, which reduces component count, and by selecting a high switching frequency, reducing the inductor footprint.
The peak-current-mode control simplifies the loop compensation and provides fast transient response. Cycle-by-cycle peak current limiting on the high-side and low-side sourcing current limit protects the device in overload situations. Hiccup limits MOSFET power dissipation if a short circuit or over loading fault persists.
A power-good supervisor circuit monitors the regulator output. The PGOOD pin is an open-drain output and goes high impedance when the output voltage is in regulation. An internal deglitch time prevents the PGOOD pin from pulling low unless a fault has occurred.
A dedicated EN pin can be used to control the regulator on/off and adjust the input undervoltage lockout. The output voltage start-up ramp is controlled by the SS/TRK pin, which allows operation as either a standalone power supply or in tracking situations.