TPS51124
- High Efficiency, Low-Power Consumption, Shutdowns to <1 µA
- Fixed Frequency Emulated On-Time Control, Frequency Selectable
From Three Options - D-CAP Mode Enables Fast Transient Response
- Auto-Skip Mode
- Less Than 1% Initial Reference Accuracy
- Low Output Ripple
- Wide Input Voltage Range: 3 V to 28 V
- Output Voltage Range: 0.76 V to 5.5 V
- Low-Side RDS(ON) Loss-less Current Sensing
- Adaptive Gate Drivers With Integrated Boost Diode
- Internal 1.2-ms Voltage-Servo Soft-Start
- Powergood Signals for Each Channel With Delay Timer
- Output Discharge During Disable, Fault
- APPLICATIONS
- Notebook I/O and Low-Voltage System Bus
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The TPS51124 is a dual, adaptive on-time D-CAP™ mode synchronous buck controller. The part enables system designers to cost effectively complete the suite of notebook power bus regulators with the absolute lowest external component count and lowest standby consumption. The fixed frequency emulated adaptive on-time control supports seamless operation between PWM mode at heavy load condition and reduced frequency operation at light load for high efficiency down to milliampere range. The main control loop for the TPS51124 uses the D-CAP mode that optimized for low ESR output capacitors such as POSCAP or SP-CAP promises fast transient response with no external compensation. Simple and separate power good signals for each channel allow flexibility of power sequencing. The part provides a convenient and efficient operation with supply input voltages (V5IN, V5FILT) ranging from 4.5 V to 5.5 V, conversion voltages (drain voltage for the synchronous high-side MOSFET) from 3 V to 28 V and output voltages from 0.76 V to 5.5 V.
The TPS51124 is available in 24-pin VQFN package specified from –40°C to 85°C ambient temperature range.
기술 문서
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | TPS51124 Dual Synchronous Step-Down Controller for Low-Voltage Power Rails datasheet (Rev. C) | PDF | HTML | 2014/12/31 |
| User guide | TPS51124 Buck Controller Evaluation Module User's Guide (Rev. B) | PDF | HTML | 2022/03/03 | |
| Application note | Intel Core i3, i5, i7 [Arrandale] Reference Design | 2010/07/21 | ||
| Application note | Adaptive Constant On-Time (D-CAPTM) Control Study in Notebook Applications (Rev. B) | 2007/12/04 |
설계 및 개발
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TPS51124 TINA-TI Reference Design (Rev. B)
| 패키지 | 핀 | 다운로드 |
|---|---|---|
| VQFN (RGE) | 24 | 옵션 보기 |
주문 및 품질
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
- 팹 위치
- 조립 위치