My Inquiry
My Account
Texas Instruments TPS62148RGXR
- Part No.:
- TPS62148RGXR
- Manufacturer:
- Texas Instruments
- Package:
- 11-VFQFN
- Datasheet:
-
TPS62148RGXR.pdf
- Description:
- IC REG BUCK ADJ 2A 11VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:52,185
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS62148RGXR from Texas Instruments is a high-accuracy, 3-V to 17-V input, 2-A synchronous step-down DC/DC converter with DCS-Control topology, ±1% output voltage accuracy in PWM mode, active output discharge, and 1.25/2.5 MHz selectable switching frequency - used in industrial PC power rails and video surveillance POL supplies.
For engineers reviewing the TPS62148RGXR datasheet, TPS62148RGXR pinout, TPS62148RGXR application, or TPS62148RGXR equivalent, key selection criteria include its 11-pin VQFN (2 mm × 3 mm) package, precise ENABLE threshold (0.7–0.83 V), 18 µA quiescent current, 100% duty-cycle capability, and active output discharge function exclusive to this variant.
Technical Context
The TPS62148RGXR implements DCS-Control topology - combining fast transient response via direct voltage feedback to a comparator with stable DC regulation through an internal compensated voltage loop - enabling seamless transition between PWM and PFM modes without audible noise or output voltage disturbance.
It supports forced PWM (via MODE = high) at fixed 1.25 MHz or 2.5 MHz (FSEL-configurable), or automatic AEE-enabled PWM/PFM operation (MODE = low) where switching frequency scales dynamically with load, input, and output voltage to sustain >90% efficiency from 1 mA to 2 A across 3–17 V input and 0.8–12 V output ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3 V to 17 V - supports multi-cell Li-ion batteries and standard 12-V intermediate rails without external pre-regulation. |
| Output Current | 2 A continuous - delivers full rated current with thermal derating managed by RθJA = 38.4°C/W in RGX package. |
| Output Voltage Accuracy | ±1% in PWM mode - enables tight regulation for FPGA core supplies and ADC reference rails without post-regulation. |
| Quiescent Current | 18 µA typical - sustains ultra-low standby power in always-on industrial sensors and surveillance systems. |
| Switching Frequency | 1.25 MHz or 2.5 MHz (FSEL-selectable) - allows compact 1–2.2 µH inductor selection and EMI filtering below 10 MHz. |
| Active Output Discharge | Enabled (TPS62148 only) - discharges VOUT via internal 100-Ω switch when disabled, preventing floating outputs in sequenced systems. |
| Power Good Output | Open-drain PG with 93–98% VOUT threshold - provides reliable rail sequencing signal for multi-rail processors and FPGAs. |
Pinout & Package
TPS62148RGXR is housed in a 2-mm × 3-mm, 11-pin VQFN (RGX) package with wettable flanks, optimized for thermal performance (RθJC(bot) = 3.2°C/W) and automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Accepts 3–17 V; requires local 10-µF ceramic capacitor to GND for stability and transient response. |
| SW | Switch node | Connects to external 1–2.2 µH inductor; carries high di/dt; must minimize trace inductance and loop area. |
| GND / AGND | Ground terminals | GND is power ground; AGND is analog ground - both must connect to same low-impedance plane under IC body. |
| FB | Voltage feedback | Senses output via resistive divider; 0.7-V reference enables 0.8–12 V adjustable output with ±1% accuracy. |
| VOS | Output voltage sense | Direct Kelvin connection to output capacitor anode - improves load regulation and enables active discharge control. |
| PG | Power-good indicator | Open-drain output; requires external pull-up; asserts low if EN=low, UVLO active, or thermal shutdown triggered. |
| EN | Enable control | Logic-compatible input with 0.7–0.83 V rising threshold; supports programmable UVLO and precise power sequencing. |
| SS/TR | Soft-start/tracking | Controls startup ramp time (150 µs typical) or enables supply tracking with external resistor network. |
| MODE | Operating mode select | Pull low for AEE-enabled PWM/PFM; pull high for fixed-frequency forced PWM - no PCB change needed. |
| FSEL | Frequency select | Pull low for 1.25 MHz; pull high for 2.5 MHz - sets on-time (800 ns or 400 ns × VOUT/VIN) in forced PWM. |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control topology | Combines hysteretic speed and voltage-mode stability - achieves <10-µs load transient response with <1% undershoot/overshoot. |
| Automatic Efficiency Enhancement (AEE) | Adapts switching frequency and on-time in PWM/PFM mode - maintains >85% efficiency from 1 mA to 2 A across full VIN/VOUT range. |
| 100% duty-cycle operation | Enables dropout as low as VOUT + IOUT × (RDS(on) + RL) - extends battery runtime in portable industrial equipment. |
| Precise ENABLE input | 0.7–0.83 V rising threshold with 100-mV hysteresis - allows RC-based delay, custom UVLO, and robust sequencing without external supervisors. |
| Active output discharge | Internal 100-Ω switch tied to VOS - discharges output within milliseconds after disable, eliminating need for external discharge circuitry. |
Applications
| Industrial PLC Power Rails | Video Surveillance Camera POL |
|---|---|
Use Scenario: Distributed 3.3-V or 5-V power for I/O modules and communication interfaces in factory automation PLCs with wide-input 12-V or 24-V bus. IC Role / Device Role / Timing Role: Primary buck regulator delivering clean, sequenced, and monitored 2-A POL supply with PG signaling for controller boot integrity. Use Value: ±1% output accuracy ensures reliable logic-level margins; 18-µA quiescent current minimizes standby loss during idle cycles. | Use Scenario: Point-of-load conversion from 12-V PoE or battery input to 1.2-V or 1.8-V FPGA/core voltage in outdoor IP cameras with thermal constraints. IC Role / Device Role / Timing Role: High-efficiency, thermally robust DC/DC converter with active discharge to meet rapid power-cycle requirements in motion-triggered recording. Use Value: DCS-Control enables sub-10-µs transient response to sensor wake-up events; 100% duty cycle extends battery life during low-power imaging modes. |
| Embedded Computer Core Supply | Building Automation Sensor Hub |
Use Scenario: Regulating 0.85-V to 1.2-V core voltage for ARM-based industrial computers operating from 12-V intermediate rail. IC Role / Device Role / Timing Role: Adjustable, high-PSRR buck converter with precise soft-start and tracking for multi-rail SoC power-up coordination. Use Value: SS/TR pin enables voltage tracking with companion regulators; ±1% accuracy prevents CPU throttling under dynamic load. | Use Scenario: Powering mixed-signal sensor nodes (temperature, humidity, occupancy) in smart HVAC controllers with strict EMI and standby current limits. IC Role / Device Role / Timing Role: Low-noise, low-IQ buck supplying 3.3-V analog and digital rails while supporting wake-on-event functionality. Use Value: AEE and PFM operation achieve <25-µA system standby; 2.5-MHz option enables small 1-µH inductor and minimal footprint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62147RGXR | No active output discharge; HICCUP overcurrent protection instead of foldback; identical pinout, specs, and package. | Suitable where output discharge is unnecessary and hiccup-mode fault recovery is preferred for short-circuit resilience. | Select TPS62147RGXR when active discharge is not required and hiccup-mode OCP better matches system fault-handling strategy. |
| TPS63020DSJR | Buck-boost architecture; 1.8–5.5-V input; 2.5-A output; no PG or VOS pins; different pinout and control interface. | Used where input voltage may fall below output (e.g., single-cell Li-ion); lacks rail sequencing and precision discharge features. | Choose TPS63020DSJR only for true buck-boost needs - not a drop-in replacement; requires layout and firmware changes. |
Compared with TPS62147RGXR, the TPS62148RGXR adds active output discharge at no cost to size or efficiency, making it preferable for sequenced multi-rail systems; versus TPS63020DSJR, it offers superior accuracy, PG signaling, and buck-only optimization for stable 12-V input environments.
Availability
TPS62148RGXR is available at Aetrix Electronics and suitable for industrial PLCs, video surveillance cameras, embedded computer core supplies, building automation sensor hubs, and factory automation edge devices requiring stable component supply and long-term production support.
Supply support for TPS62148RGXR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TPS62148RGXR belongs to TI's DCS-Control buck converter product line, engineered for high-efficiency, low-noise, and easy-to-design POL applications in space-constrained industrial and embedded systems.
FAQ
What is the maximum output current capability of the TPS62148RGXR?
The TPS62148RGXR delivers up to 2 A of continuous output current under recommended operating conditions (TJ ≤ 125°C, proper PCB thermal design). Its RDS(on) values (100 mΩ high-side, 39 mΩ low-side) and 38.4°C/W junction-to-ambient thermal resistance enable this rating in the 2 mm × 3 mm RGX package with adequate copper area.
Does the TPS62148RGXR support output voltage tracking?
Yes, the TPS62148RGXR supports voltage tracking via its SS/TR pin. When configured with an external resistor network, it can follow the ramp of another supply during startup - enabling coordinated sequencing for multi-rail SoCs or FPGAs. The tracking gain is 1×, with a 11-mV offset at VSS/TR = 0 V, as specified in the electrical characteristics table.
How does the active output discharge function work on the TPS62148RGXR?
The TPS62148RGXR integrates an active output discharge switch connected to the VOS pin. When the device is disabled (EN = low), the internal 100-Ω NMOS switch turns on, discharging the output capacitor to near ground within milliseconds. This eliminates floating voltages and ensures safe, predictable power-down behavior - a feature absent in the TPS62147RGXR variant.
What are the key differences between TPS62148RGXR and TPS62147RGXR?
The TPS62148RGXR and TPS62147RGXR share identical pinout, package, input/output specs, and DCS-Control architecture. The primary differences are: (1) TPS62148RGXR includes active output discharge (VOS-connected switch); (2) TPS62147RGXR uses hiccup-mode overcurrent protection, while TPS62148RGXR employs foldback current limiting. Both are RGX-packaged and pin-compatible.
Can the TPS62148RGXR operate with 100% duty cycle, and what is its minimum input voltage?
Yes, the TPS62148RGXR supports 100% duty-cycle operation to maintain regulation when VIN approaches VOUT. Minimum input voltage depends on load: VIN(min) ≈ VOUT + IOUT × (RDS(on) + RL). With 2-A load, 100-mΩ high-side RDS(on), and 20-mΩ inductor DCR, VIN(min) is ~VOUT + 0.24 V - enabling extended battery life in portable industrial tools.
TPS62148RGXR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- DCS-Control™
- Package/Case:
- 11-VFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 17V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 12V
- Current - Output:
- 2A
- Frequency - Switching:
- 2.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 11-VQFN-HR (2x3)
TPS62148RGXR FAQ
1.How can I place an order for TPS62148RGXR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62148RGXR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPS62148RGXR reliable?
The price and inventory of TPS62148RGXR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62148RGXR is usually 5 days.
3.What payment methods are accepted for TPS62148RGXR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62148RGXR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62148RGXR?
TPS62148RGXR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62148RGXR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPS62148RGXR?
For technical support, including TPS62148RGXR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62148RGXR requirements.
6.How does Aetrix verify that TPS62148RGXR is sourced from the original manufacturer or authorized distributors?
All TPS62148RGXR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS62148RGXR meets industry standards.
7.What is the process for return or replacement of TPS62148RGXR?
All TPS62148RGXR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62148RGXR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPS62148RGXR part is unused and in its original packaging.
Return procedure for TPS62148RGXR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS62148RGXR Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
