TPS62148 Series
3-17V 2.0A Step-Down Converter with 1% accuracy and PFM/Forced-PWM in 2x3QFN
Manufacturer: Texas Instruments
Catalog(2 parts)
| Part | Main Purpose | Current - Output▲▼ | Voltage - Output▲▼ | Voltage - Input▲▼ | Voltage - Input▲▼ | Frequency - Switching▲▼ | Utilized IC / Part | Supplied Contents | Board Type | Outputs and Type | Outputs and Type▲▼ | Package / Case | Voltage - Output (Min/Fixed)▲▼ | Operating Temperature▲▼ | Operating Temperature▲▼ | Number of Outputs▲▼ | Output Configuration | Output Type | Function | Voltage - Input (Max)▲▼ | Voltage - Output (Max)▲▼ | Voltage - Input (Min)▲▼ | Synchronous Rectifier▲▼ | Supplier Device Package | Mounting Type | Topology |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments TPS62148EVM-034TPS62148 - DC/DC, Step Down 1, Non-Isolated Outputs Evaluation Board | DC/DC, Step Down | 2 A | 3.299999952316284 V | 3 V | 17 V | 2500000 Hz | TPS62148 | Board(s) | Fully Populated | Non-Isolated | 1 ul | |||||||||||||||
Texas Instruments TPS62148RGXRBuck Switching Regulator IC Positive Adjustable 0.8V 1 Output 2A 11-VFQFN | 2 A | 2500000 Hz | 11-VFQFN | 0.800000011920929 V | 125 °C | -40 °C | 1 ul | Positive | Adjustable | Step-Down | 17 V | 12 V | 3 V | 11-VQFN-HR (2x3) | Surface Mount | Buck |
Key Features
• Output voltage accuracy ± 1% over specified TJrange (PWM mode)Input voltage range: 3 V to 17 VQuiescent current 18-µA typicalOutput voltage from 0.8 V to 12 VAdjustable soft startForced PWM or PWM/PFM operationSwitching frequency of 1.25 MHz or 2.5 MHz in forced PWMPrecise ENABLE input allowsUser-defined undervoltage lockoutExact sequencing100% duty cycle modeAutomatic efficiency enhancement AEEDCS-Control topologyActive output discharge (TPS62148)HICCUP overcurrent protection (TPS62147)Power-good outputAvailable in 2-mm × 3-mm VQFN packageOutput voltage accuracy ± 1% over specified TJrange (PWM mode)Input voltage range: 3 V to 17 VQuiescent current 18-µA typicalOutput voltage from 0.8 V to 12 VAdjustable soft startForced PWM or PWM/PFM operationSwitching frequency of 1.25 MHz or 2.5 MHz in forced PWMPrecise ENABLE input allowsUser-defined undervoltage lockoutExact sequencing100% duty cycle modeAutomatic efficiency enhancement AEEDCS-Control topologyActive output discharge (TPS62148)HICCUP overcurrent protection (TPS62147)Power-good outputAvailable in 2-mm × 3-mm VQFN package
Description
AI
The TPS62147 and TPS62148 are high efficiency and easy-to-use synchronous step-down DC/DC converters, based on the DCS-Control Topology. The wide input voltage range of 3-V to 17-V make the devices suitable for multi-cell Li-Ion as well as 12-V intermediate supply rails. The devices provide 2-A continuous output current. The devices automatically enter Power Save Mode at light loads to maintain high efficiency across the whole load range. With that, the devices are well suited for applications that require connected standby performance, like industrial PC and video surveillance. With the MODE pin set to low, the switching frequency is adapted automatically based on the output current and also on input and output voltage. This technique is called Automatic Efficiency Enhancement (AEE) and maintains high conversion efficiency over the whole operation range. TPS62147, TPS62148 provide a 1% output voltage accuracy in PWM mode and therefore enable the design of a power supply with high output voltage accuracy. The FSEL pin allows to set a switching frequency in forced PWM mode of 1.25 MHz or 2.5 MHz, respectively.
The typical quiescent current is 18 µA. In shutdown mode, the current is typically 1 µA.
The devices are available as an adjustable version, packaged in a 3-mm × 2-mm VQFN package.
The TPS62147 and TPS62148 are high efficiency and easy-to-use synchronous step-down DC/DC converters, based on the DCS-Control Topology. The wide input voltage range of 3-V to 17-V make the devices suitable for multi-cell Li-Ion as well as 12-V intermediate supply rails. The devices provide 2-A continuous output current. The devices automatically enter Power Save Mode at light loads to maintain high efficiency across the whole load range. With that, the devices are well suited for applications that require connected standby performance, like industrial PC and video surveillance. With the MODE pin set to low, the switching frequency is adapted automatically based on the output current and also on input and output voltage. This technique is called Automatic Efficiency Enhancement (AEE) and maintains high conversion efficiency over the whole operation range. TPS62147, TPS62148 provide a 1% output voltage accuracy in PWM mode and therefore enable the design of a power supply with high output voltage accuracy. The FSEL pin allows to set a switching frequency in forced PWM mode of 1.25 MHz or 2.5 MHz, respectively.
The typical quiescent current is 18 µA. In shutdown mode, the current is typically 1 µA.
The devices are available as an adjustable version, packaged in a 3-mm × 2-mm VQFN package.