TPS65270
- Wide Input Supply Voltage Range: 4.5 V to 18 V
- 0.8 V, ±1% Accuracy Reference
- Up to 2-A (Buck 1) and 3-A (Buck 2) Maximum Continuous Output Loading Current
- Low-Power Pulse Skipping Mode to Achieve High Light Load Efficiency
- Adjustable Switching Frequency 300 kHz to 1.4 MHz Set by External Resistor
- Startup With a Prebiased Output Voltage
- Dedicated Enable and Soft Start for Each Buck
- Peak Current-Mode Control With Simple Compensation Circuit
- Cycle-by-Cycle Overcurrent Protection
- 180° Out-of-Phase Operation to Reduce Input Capacitance and Power Supply Induced Noise
- Available in 24-Lead Thermally Enhanced HTSSOP (PWP) and VQFN 4-mm × 4-mm (RGE) Packages
The TPS65270 is a monolithic, dual synchronous buck regulator with a wide operating input voltage that can operate in 5-V, 9-V, 12-V, or 15-V bus voltages and battery chemistries. The converters are designed to simplify its application while giving the designer the option to optimize their usage according to the target application.
The TPS65270 features a precision 0.8-V reference and can produce output voltages up to 15 V. Each converter features an enable pin that allows dedicated control of each channel that provides flexibility for power sequencing. Soft-start time in each channel can be adjusted by choosing different external capacitors. TPS65270 is also able to start up with a prebiased output. The converter begins switching when output voltage reaches the prebiased voltage.
Constant frequency peak current-mode control simplifies the compensation and provides fast transient response. Cycle-by-cycle overcurrent protection and hiccup mode operation limits MOSFET power dissipation in short-circuit or overloading fault conditions. Low-side reverse current protection also prevents excessive sinking current from damaging the converter.
The switching frequency of the converters can be set from 300 KHz to 1.4 MHz with an external resistor. Two converters have 180° out-of-phase clock signals to minimize the input filter requirements and alleviate EMI and input capacitor requirements.
TPS65270 also features a light-load pulse skipping mode (PSM). The PSM mode allows a power loss reduction on the input power supplied to the system at light loading in order to achieve light-load high efficiency.
The TPS65270 is available in a 24-pin, thermally enhanced HTSSOP (PWP) package and 24-pin VQFN (RGE) package.
기술 문서
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | TPS65270 4.5-V to 18-V Input Voltage, 2-A or 3-A Output Current, Dual Synchronous Step-Down Regulator With Integrated MOSFET datasheet (Rev. E) | PDF | HTML | 2016/08/31 |
| EVM User's guide | TPS65270 Buck Converter Evaluation Module User's Guide (Rev. C) | PDF | HTML | 2021/05/25 | |
| Application note | Measure Power Stage Gain and Slope Compensation in PCM (Peak Current Mode) BUCK (Rev. A) | PDF | HTML | 2019/04/01 | |
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018/06/25 | ||
| Application note | TPS65270 Loop Compensation Design Consideration | 2012/03/29 |
설계 및 개발
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TPS65270EVM — TPS65270 고전류, 동기식 스텝다운 듀얼 벅 DC/DC 컨버터 평가 모듈
The TPS65270EVM evaluation module is designed to provide access to the features of the TPS65270. The TPS65270 PMIC is designed to provide 2-A and 3-A continuous currents with an operational range of 4.5 V to 16 V and an externally set switching frequency ranging from 300 kHz to 1.4 MHz. When the (...)
TPS65270 Unencrypted PSpice Average Model Package (Rev. A)
| 패키지 | 핀 | 다운로드 |
|---|---|---|
| HTSSOP (PWP) | 24 | 옵션 보기 |
| 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