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The TPS65320-Q1 device is a combination of a 40-V, 3.2-A, DC-DC step-down converter and a low-dropout (LDO) regulator. The DC-DC step-down converter, referred to as the buck regulator, has an integrated high-side MOSFET. The LDO regulator also has an integrated MOSFET and a low-input supply current of 28-μA (typical) in a no-load condition. Furthermore, the LDO regulator has an active-low, push-pull reset output pin. To reduce heat, the input supply of the LDO regulator can auto-source from the input voltage to the output of the buck regulator. The low-voltage tracking feature can eliminate the need to use a boost converter during cold-crank conditions.
The buck regulator has a switching frequency range from 100 kHz to 2.5 MHz that provides a flexible design to fix system requirements. The external loop compensation allows for optimization of the converter response for the appropriate operating conditions. A low-ripple pulse-skip mode reduces the no-load input supply current to less than 140 μA.
The device has built-in protection features such as soft start, current limit, thermal sensing, and shutdown because of excessive power dissipation. Furthermore, the device has an internal undervoltage-lockout (UVLO) function that turns off the device at a too-low supply voltage.
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | TPS65320-Q1 40-V Step-Down Converter With Eco-mode and LDO Regulator datasheet (Rev. F) | PDF | HTML | 2016/03/07 |
| Application note | Low Quiescent Current With Asynchronous Buck-Converters at High Temperatures | 2016/07/20 | ||
| Application note | TPS65320C-Q1 Auto-Source Feature | 2016/07/11 | ||
| Technical article | How a Wide VIN integrated buck and LDO can power your automotive system – part 1 | PDF | HTML | 2016/06/10 | |
| Application note | TPS65320-Q1 and TPS65320C-Q1 Design Checklist (Rev. B) | 2016/04/13 | ||
| Application note | Interfacing TPS57xxx-Q1 and TPS65320-Q1 Family Devices With Low Impendence Exter | 2015/12/08 | ||
| EVM User's guide | TPS65320EVM User's Guide (Rev. A) | 2015/08/18 | ||
| Application note | CISPR25 Radiated Emissions Using TPS65320-Q1 (Rev. A) | 2015/06/03 | ||
| White paper | Power Management IC (PMIC) Guide for Automotive (Rev. A) | 2014/10/29 |
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TPS65320-Q1 Switching Mode Power Supply Component Calculation Tool helps design the power stage and compensation network for DC/DC converter. It is also a great assistance for getting a deeper understanding of the AC response analysis for TPS65320-Q1
This worksheet includes two segments:
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| 패키지 | 핀 | 다운로드 |
|---|---|---|
| HTSSOP (PWP) | 14 | 옵션 보기 |