My Inquiry
My Account
Texas Instruments TPS65270RGER
- Part No.:
- TPS65270RGER
- Manufacturer:
- Texas Instruments
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
TPS65270RGER.pdf
- Description:
- IC REG BUCK ADJ 2A/3A DL 24VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,406
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS65270RGER from Texas Instruments is a dual synchronous step-down DC-DC regulator IC integrating two independent buck converters with integrated high-side and low-side MOSFETs. It supports 4.5 V to 18 V input, delivers up to 2 A on Buck 1 and 3 A on Buck 2, features 0.8 V ±1% reference accuracy, 300 kHz–1.4 MHz adjustable switching frequency, and 180° out-of-phase operation - used in set-top boxes, wireless routers, and home gateways for efficient multi-rail power conversion.
For engineers reviewing the TPS65270RGER datasheet, TPS65270RGER pinout, TPS65270RGER application, or TPS65270RGER equivalent, key selection considerations include per-channel enable/soft-start control, peak current-mode architecture with external compensation, thermal shutdown (160°C trip), pulse-skipping mode for light-load efficiency, and compatibility with 4-mm × 4-mm VQFN-24 packaging.
Technical Context
The TPS65270RGER implements constant-frequency peak current-mode control per channel, enabling fast transient response and simplified Type II loop compensation via COMP1/COMP2 pins. Each converter includes dedicated error amplifiers (130 µA/V transconductance), internal slope compensation, and cycle-by-cycle overcurrent protection with hiccup-mode fault recovery.
It integrates an internal 6.5-V LDO (VCC) for biasing, supports prebiased startup, and allows independent power sequencing via EN1/EN2 with 1.55 V rising threshold. The LOW_P pin selects between forced PWM (LOW_P = low) and automatic pulse-skipping mode (LOW_P = high), while ROSC sets switching frequency via external resistor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 18 V - supports 5 V, 9 V, 12 V, and 15 V bus supplies and wide battery chemistries. |
| Output Current (Buck 1 / Buck 2) | Up to 2 A / 3 A continuous - enables dual-rail systems like 1.8 V/2 A + 1.2 V/3 A without external MOSFETs. |
| Reference Voltage Accuracy | 0.8 V ±1% at TJ = 25°C - ensures tight output regulation across load and temperature for precision rails. |
| Switching Frequency Range | 300 kHz to 1.4 MHz - adjustable via ROSC-to-ground resistor for EMI optimization or size-efficiency tradeoffs. |
| Thermal Shutdown Threshold | 160°C trip with 20°C hysteresis - protects against sustained overload or poor PCB thermal design. |
| Quiescent Current (Shutdown) | 10 µA - minimizes standby power loss in always-on embedded applications. |
| UVLO Threshold | 4.2 V (typical rising), 3.85 V (typical falling) - prevents erratic operation during brownout conditions. |
Pinout & Package
TPS65270RGER is housed in a 24-pin VQFN package (4.00 mm × 4.00 mm, 0.5 mm pitch) with exposed thermal pad requiring soldering to PCB ground plane for optimal thermal performance (RθJB = 12.1°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1, EN2 | Dedicated enable inputs | Logic-high enables respective buck channel; internal 1-MΩ pullup allows auto-enable if left floating. |
| SS1, SS2 | Soft-start timing inputs | 5-µA internal current source charges external capacitor to control ramp rate and limit inrush current. |
| FB1, FB2 | Feedback voltage inputs | Monitor output via resistor divider; regulate to precise 0.8 V reference for stable 1.2 V, 1.8 V, 3.3 V, or 5 V rails. |
| BST1, BST2 | Bootstrap supplies | Drive high-side MOSFET gates; require 47-nF ceramic capacitors from BSTx to LXx for proper gate drive. |
| LX1, LX2 | Switching nodes | Connect to external inductors (e.g., 4.7 µH); carry high di/dt currents - require short, low-inductance PCB traces. |
| ROSC | Oscillator frequency set | Resistor to ground determines switching frequency; e.g., 500 kΩ yields ~500 kHz for balanced efficiency/size. |
| LOW_P | Low-power mode control | High = automatic PSM at light load; low = forced PWM - critical for noise-sensitive or constant-frequency systems. |
| VCC | Internal LDO output | 6.5-V regulated supply for internal circuitry; requires 10-µF ceramic capacitor to ground for stability. |
| AGND, GND | Analog and power grounds | Must be connected together and to thermal pad; separate AGND/GND routing avoids noise coupling into feedback paths. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual synchronous buck topology | Eliminates need for 4 external MOSFETs and associated gate drivers - reduces BOM count and layout complexity. |
| 180° out-of-phase operation | Halves input ripple current vs. in-phase converters - enables smaller input capacitors and lower EMI filter cost. |
| Prebiased output startup | Allows safe power-up into already-biased outputs (e.g., hot-swap or rail-sharing systems) without reverse current damage. |
| Per-channel soft-start and enable | Enables flexible power sequencing (e.g., core before I/O) and controlled inrush management for system reliability. |
| Peak current-mode control with slope compensation | Ensures stable operation at >50% duty cycle and provides inherent cycle-by-cycle current limiting for robust fault handling. |
Applications
| Set-Top Boxes | Home Gateways |
|---|---|
Use Scenario: Powering SoC core (1.2 V/3 A), memory interface (1.8 V/2 A), and USB PHY (3.3 V) from 12 V DC input. IC Role / Device Role / Timing Role: Dual-buck PMIC delivering tightly regulated, sequenced, low-noise rails with minimal external components. Use Value: Reduces solution size by 35% vs. discrete buck controllers + MOSFETs; 180° phase shift cuts input capacitance requirement by 50%. |
Use Scenario: Supplying CPU (1.1 V), DDR3 (1.5 V), and Ethernet PHY (3.3 V) in compact residential gateway with thermal constraints. IC Role / Device Role / Timing Role: Primary power management IC managing multi-rail startup, light-load efficiency, and thermal safety. Use Value: Pulse-skipping mode achieves >85% efficiency at 50 mA load; thermal shutdown (160°C) prevents field failures under airflow-limited conditions. |
| Wireless Routers | Car DVD Players |
Use Scenario: Generating 1.2 V/2 A for Wi-Fi SoC and 3.3 V/1 A for RF front-end from automotive 12 V supply with wide input tolerance. IC Role / Device Role / Timing Role: Dual-output DC-DC regulator supporting dynamic load steps and meeting automotive-grade input range (4.5–18 V). Use Value: UVLO hysteresis (0.35 V) prevents oscillation during engine cranking; 125°C max junction rating ensures reliability in sealed enclosures. |
Use Scenario: Providing 1.8 V/2 A for display controller and 5 V/1 A for audio amplifier in space-constrained automotive infotainment head unit. IC Role / Device Role / Timing Role: Compact, thermally robust dual-buck regulator with independent enable for display/audio power domain isolation. Use Value: VQFN-24 package (4 mm × 4 mm) fits tight board areas; exposed thermal pad sustains 3 A load at 70°C ambient without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS54227PWR | Single-channel, 2-A buck; no second converter or integrated LDO; 4.5–18 V input; 300 kHz–2 MHz freq. | Suitable only when one regulated rail is needed; lacks dual-rail sequencing and 180° phase benefit. | Select when BOM simplicity and single-rail requirements outweigh need for dual output or low-light-load efficiency. |
| LM27402SQ/NOPB | Dual-channel controller (no integrated FETs); requires external MOSFETs; 4.5–20 V input; 200 kHz–1.5 MHz freq. | Higher design flexibility but larger footprint, more components, and greater layout sensitivity than TPS65270RGER. | Choose for designs needing >3 A per channel, custom FET selection, or higher input voltage margin (20 V). |
Compared with TPS54227PWR and LM27402SQ/NOPB, TPS65270RGER uniquely integrates two complete synchronous buck stages plus internal LDO in a single 4-mm QFN, enabling smallest PCB area and fastest time-to-power for dual-rail embedded systems - especially where light-load efficiency, thermal performance, and sequencing control are critical.
Availability
TPS65270RGER is available at Aetrix Electronics and suitable for set-top boxes, home gateways, and wireless routers requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS65270RGER 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 leader specializing in analog, embedded processing, and power management technologies, with decades of expertise in high-reliability power conversion ICs.
The TPS65270 product line delivers highly integrated dual-buck regulators for consumer and industrial applications demanding compact, efficient, and thermally robust multi-rail power solutions - designed specifically for DTV, networking, and automotive infotainment systems.
FAQ
What is the maximum continuous output current supported by each channel of the TPS65270RGER?
The TPS65270RGER supports up to 2 A continuous output current on Buck 1 and up to 3 A on Buck 2 under recommended operating conditions (TJ ≤ 125°C, adequate PCB thermal design). These ratings assume proper layout, sufficient input capacitance, and appropriate inductor selection - peak current limits are 3.2 A (Buck 1) and 4.1 A (Buck 2) per electrical characteristics.
Does the TPS65270RGER support independent power sequencing between its two output channels?
Yes, the TPS65270RGER supports full independent power sequencing via dedicated EN1 and EN2 pins, each with programmable soft-start through SS1 and SS2. This allows staggered startup (e.g., Buck 1 enabled before Buck 2), delayed turn-on using external capacitors on EN pins (~0.75 ms/nF), and individual fault shutdown - essential for SoC and FPGA power domains.
How is the switching frequency configured on the TPS65270RGER?
The switching frequency of the TPS65270RGER is set by connecting an external resistor from the ROSC pin to ground. Frequency ranges from 300 kHz to 1.4 MHz; for example, a 500-kΩ resistor yields ~500 kHz, while a 250-kΩ resistor targets ~1 MHz. The relationship is monotonic and documented in Figure 7 of the datasheet - no additional components or configuration registers are required.
Can the TPS65270RGER start up safely when its output rails are already prebiased?
Yes, the TPS65270RGER supports prebiased output startup: it begins switching only after the feedback voltage reaches the prebiased level, preventing reverse current flow through the low-side MOSFET. This capability is confirmed in Section 8.1 and Application Note SLVA621 - critical for hot-swap, rail-sharing, or redundant power systems.
What thermal management provisions does the TPS65270RGER include?
The TPS65270RGER includes junction temperature monitoring with thermal shutdown at 160°C (±5°C) and 20°C hysteresis, plus a thermally enhanced VQFN package with exposed pad. Its RθJB = 12.1°C/W (VQFN) enables reliable 3-A operation at 70°C ambient when using ≥4 thermal vias to inner ground planes - validated in TI's thermal simulation reports and layout guidelines.
TPS65270RGER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 15V
- Current - Output:
- 2A, 3A
- Frequency - Switching:
- 300kHz ~ 1.4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-VQFN (4x4)
TPS65270RGER FAQ
1.How can I place an order for TPS65270RGER through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS65270RGER 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 TPS65270RGER reliable?
The price and inventory of TPS65270RGER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS65270RGER is usually 5 days.
3.What payment methods are accepted for TPS65270RGER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS65270RGER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS65270RGER?
TPS65270RGER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS65270RGER 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 TPS65270RGER?
For technical support, including TPS65270RGER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS65270RGER requirements.
6.How does Aetrix verify that TPS65270RGER is sourced from the original manufacturer or authorized distributors?
All TPS65270RGER 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 TPS65270RGER meets industry standards.
7.What is the process for return or replacement of TPS65270RGER?
All TPS65270RGER units undergo pre-shipment inspection (PSI). If there is an issue with TPS65270RGER, 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 TPS65270RGER part is unused and in its original packaging.
Return procedure for TPS65270RGER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS65270RGER 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…
