Calculation tool
SLVC780 — Design Tool for Output Voltage Adjustment Using a DAC
Calculator tool to adjust the power supply's output voltage with an analog input voltage
TPS62147
3-17V 2.0A Step-Down Converter with 1% accuracy and PFM/Forced-PWM in 2x3QFN
Data sheet
TPS62147
- Output voltage accuracy ± 1% over specified TJ range (PWM mode)
- Input voltage range: 3 V to 17 V
- Quiescent current 18-µA typical
- Output voltage from 0.8 V to 12 V
- Adjustable soft start
- Forced PWM or PWM/PFM operation
- Switching frequency of 1.25 MHz or 2.5 MHz in forced PWM
- Precise ENABLE input allows
- User-defined undervoltage lockout
- Exact sequencing
- 100% duty cycle mode
- Automatic efficiency enhancement AEE
- DCS-Control topology
- Active output discharge (TPS62148)
- HICCUP overcurrent protection (TPS62147)
- Power-good output
- Available in 2-mm × 3-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.
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Technical documentation
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View all 6 | Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | TPS62147, TPS62148 High-Accuracy, 3-V to 17-V, 2-A Step-Down Converter with DCS-Control datasheet (Rev. B) | PDF | HTML | 02 Feb 2023 |
| Application note | Point-of-Load Solutions for Data Center App Implementing VR13.HC Vccin Spec (Rev. A) | PDF | HTML | 08 Jan 2020 | |
| Analog Design Journal | Methods of output-voltage adjustment for DC/DC converters | 14 Jun 2019 | ||
| Application brief | Supercap last gasp failsafe power for RF comunications in E-Meters | 27 Jan 2019 | ||
| Analog Design Journal | Understanding 100% mode in low-power DC/DC converters | 22 Jun 2018 | ||
| Technical article | Output accuracy varies with temperature – 1% is not always 1% | PDF | HTML | 02 May 2018 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
TPS62148EVM-034 — 17-V Input, 2-A Output, Step-Down Converters with fSEL functionality Evaluation Module
The TPS62148EVM-034 is designed to help the user easily evaluate and test the operation and functionality of the TPS62148 DC/DC converter. The EVM converts a 3-V to 17-V input voltage to a regulated output voltage of 3.3V at up to 2A output current. The TPS62148 operates with a nominal switching (...)
Simulation model
TPS62147 PSpice Unencrypted Transient Model (Rev. B)
SLVMCO3B.ZIP (112 KB) - PSpice Model
Reference designs
PMP30528 — Supercapacitor backup power supply for E-Meters reference design
This reference design automatically provides back-up voltages to an E-Meter during a power interruption. While the input voltage is between 10 V to 12 V, two buck controllers (TPS62147, TPS62173) generate 3.9 V at 2 A and 5 V at 150 mA. An optional synchronous boost generates 3.3 V at 50 mA. A (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VQFN-HR (RGX) | 11 | Ultra Librarian |
Ordering & quality
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