My Inquiry
My Account
Texas Instruments TPS55065QPWPRQ1
- Part No.:
- TPS55065QPWPRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS55065QPWPRQ1.pdf
- Description:
- IC REG BCK BST 5V 500MA 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,614
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS55065QPWPRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive buck/boost switched-mode regulator with integrated switches, delivering 5 V ±2% output in normal mode and ±3% in low-power/crossover mode across 1.5 V–40 V input range, supporting 500-mA load current at ≥7 V input, and featuring programmable reset delay, undervoltage alarm (AOUT), and slew-rate control for EMI reduction - used in automotive infotainment power rails.
For engineers reviewing the TPS55065QPWPRQ1 datasheet, TPS55065QPWPRQ1 pinout, TPS55065QPWPRQ1 application, or TPS55065QPWPRQ1 equivalent, key selection considerations include its dual-mode buck/boost operation, 440 kHz nominal switching frequency with modulation capability, thermal shutdown at 160–200°C, 5Vg switched output with current limiting, and HTSSOP-20 package compatibility with automotive-grade thermal management requirements.
Technical Context
The TPS55065QPWPRQ1 implements voltage-mode control with internal high-side and synchronous rectifier MOSFETs, enabling seamless buck-to-boost transition between 5.0 V and 5.9 V input thresholds. Its clock modulator adjusts switching frequency from 270 kHz to 680 kHz using an external Rmod resistor to spread spectral energy and reduce conducted EMI.
It integrates a programmable deglitch timer on RESET (8–120 ms via REST capacitor), open-drain AOUT alarm triggered by AIN voltage monitoring (2.3 V–2.5 V thresholds), and dual SCR0/SCR1 pins selecting four slew-rate settings (2.8–18.8 A/µs) for Q1 gate drive - all operating within –40°C to +125°C ambient temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.5 V to 40 V - supports cold-crank (≤2 V) and load-dump (≥36 V) conditions in automotive systems |
| Output Voltage | 5 V ±2% (normal mode), ±3% (low-power/crossover) - meets strict automotive MCU and sensor supply tolerance |
| Max Load Current | 500 mA at Vdriver ≥7 V - sufficient for infotainment SoCs and display controllers |
| Switching Frequency | 440 kHz typical, modulated 270–680 kHz - reduces EMI peak emissions without external filtering |
| Thermal Shutdown | 160–200°C junction - protects against sustained overload or poor PCB heatsinking |
| Reset Threshold | 4.51–4.79 V on VOUT - ensures reliable power-on reset assertion for downstream logic |
| Alarm Threshold | 2.3 V (low) / 2.5 V (high) on AIN - configurable undervoltage detection for battery monitoring |
| Package | HTSSOP-20 (6.5 mm × 4.4 mm) - thermally enhanced for automotive under-hood mounting |
Pinout & Package
TPS55065QPWPRQ1 uses a thermally enhanced 20-pin HTSSOP package (6.50 mm × 4.40 mm) with exposed thermal pad recommended to be connected to GND for optimal thermal performance (RθJA = 37.9°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCR1, SCR0 | Slew-rate control inputs | Select Q1 gate drive slew rate (2.8–18.8 A/µs) to balance EMI vs. efficiency |
| Cboot1, Cboot2 | Bootstrap capacitor connections | Support high-side MOSFET gate drive; require 4.7 nF ceramic capacitors |
| Vdriver | Main unregulated input | Accepts 1.5–40 V; powers internal circuitry and switching stage |
| L1, L2 | Inductor interface terminals | Connect external 20–100 µH inductor; L1 requires Schottky diode to PGND |
| VOUT | Main regulated output | Delivers 5 V ±2% up to 500 mA; requires 22–470 µF low-ESR output capacitor |
| 5Vg | Switched 5-V auxiliary output | Current-limited 400 mA output with self-protection during short-circuit |
| RESET, AOUT | Open-drain status outputs | Assert low on output fault (RESET) or input undervoltage (AOUT); require pull-up resistors |
| REST, AIN, CLP, ENABLE, 5Vg_ENABLE | Configurable digital inputs | Programmable reset delay (REST), alarm threshold (AIN), low-power mode (CLP), and enable functions |
Key Features
| Feature | Design Value |
|---|---|
| Buck/Boost Automatic Transition | Seamlessly switches between modes at 5.0–5.9 V input window - maintains regulation during engine cranking |
| EMI Reduction Architecture | Integrated clock modulator (28 kHz typical) spreads 440 kHz fundamental across 220 kHz bandwidth - lowers peak conducted emissions |
| Programmable Slew Rate | Four discrete Q1 gate drive rates (via SCR0/SCR1) - enables tuning of switching noise vs. conduction loss trade-off |
| Automotive Supervisory Functions | Dedicated RESET (deglitched, programmable delay) and AOUT (undervoltage alarm) outputs - simplify system-level power monitoring |
| Thermally Robust Package | HTSSOP-20 with exposed thermal pad - achieves 1.8°C/W junction-to-board resistance for sustained 125°C operation |
| Low-Power Mode Control | Digital CLP input enables pulse-frequency modulation (PFM) below 7 V input - reduces quiescent current to 3.55 mA avg |
Applications
| Automotive Infotainment Power Supply | 12-V Industrial Control Module |
|---|---|
Use Scenario: Powers head-unit SoC, display driver, and audio codec from vehicle battery with wide input variation (6–16 V nominal, down to 2.5 V during cranking). IC Role / Device Role / Timing Role: Primary buck/boost regulator providing stable 5 V rail with automatic mode transition and reset signaling to MCU. Use Value: Maintains system operation during cold-crank events without brownout; RESET output synchronizes firmware boot sequence. |
Use Scenario: Supplies 5 V to PLC I/O modules and fieldbus transceivers in factory automation equipment powered from 12 V DC bus. IC Role / Device Role / Timing Role: Regulator with alarm (AOUT) and reset (RESET) outputs for supervisory interface with host controller. Use Value: Detects input undervoltage before bus collapse and asserts RESET to prevent corrupted data writes during power failure. |
| Automotive Cluster Display Backlight Driver | Server Baseboard Management Unit (BMC) |
Use Scenario: Generates 5 V for TFT-LCD timing controller and LED backlight dimming IC in digital instrument cluster. IC Role / Device Role / Timing Role: Main 5 V supply with low-noise operation enabled by slew-rate control and frequency modulation. Use Value: Reduces conducted EMI near sensitive analog video signals; 5Vg output powers logic-level interface circuits. |
Use Scenario: Provides always-on 5 V standby rail for BMC microcontroller and IPMI interface in enterprise servers. IC Role / Device Role / Timing Role: Regulator with low-quiescent-current low-power mode (CLP-controlled) and thermal shutdown protection. Use Value: Draws only 3.55 mA avg in PFM mode while maintaining 5 V output - extends uptime during AC loss events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck/boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5118QMHX/NOPB | Wide-input (3–75 V) buck-boost controller with external FETs; no integrated switches; higher max input voltage but requires more BOM components | Used where >40 V input or >1 A output is required; lacks integrated 5Vg output and alarm function | Choose when designing for 48 V industrial systems or needing higher output current scalability |
| TPS63020DSJR | Single-inductor buck-boost converter with integrated switches; 1.8–5.5 V input; 5 V ±1% output; lower input range and tighter regulation but no automotive qualification | Targeted at portable electronics; lacks AEC-Q100 Grade 1 rating, RESET/AOUT supervision, and HTSSOP thermal design | Choose for non-automotive space-constrained designs requiring ±1% accuracy and smaller footprint |
Compared with LM5118QMHX/NOPB and TPS63020DSJR, the TPS55065QPWPRQ1 uniquely combines AEC-Q100 Grade 1 qualification, integrated 5Vg auxiliary output, programmable alarm/reset supervision, and HTSSOP thermal performance - making it the only option qualified for direct replacement in automotive infotainment power rails.
Availability
TPS55065QPWPRQ1 is available at Aetrix Electronics and suitable for automotive infotainment systems, 12-V industrial control modules, and server baseboard management units requiring stable component supply with full AEC-Q100 compliance and long-term production support.
Supply support for TPS55065QPWPRQ1 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 specializing in analog and embedded processing technologies, with leadership in automotive, industrial, and power management ICs.
The TPS55065QPWPRQ1 belongs to TI's automotive-grade switched-mode regulator product line, designed specifically for robust power conversion in harsh environments such as engine compartments and infotainment head-units.
FAQ
What is the minimum input voltage required for TPS55065QPWPRQ1 to start regulation?
The TPS55065QPWPRQ1 starts regulation at 5 V input under 500-mA load conditions. It sustains regulation down to 1.5 V input in low-power mode with reduced output current capability (120 mA at 1.5 V). Startup is guaranteed when Vdriver reaches 5 V with CO ≥36 µF, per datasheet Section 6.6.
Does TPS55065QPWPRQ1 support true buck-boost topology without external diodes?
No - the TPS55065QPWPRQ1 requires an external Schottky diode connected from L1 to PGND, as specified in the datasheet Pin Functions table and Figure 1 schematic. This diode is mandatory for boost-mode operation and must exhibit ≤0.4 V forward drop at 1 A and 125°C.
How is the reset delay time programmed on TPS55065QPWPRQ1?
The reset delay time on TPS55065QPWPRQ1 is set by a capacitor connected to the REST pin: delay = CREST × 1 ms, where CREST is in nanofarads. For example, a 10-nF capacitor yields ~10 ms delay (8–12 ms typical), and a 100-nF capacitor yields ~100 ms (80–120 ms typical), per Section 7.3.6.
Can TPS55065QPWPRQ1 operate without the clock modulator enabled?
Yes - the clock modulator is disabled by connecting the Rmod pin to GND. In this state, the TPS55065QPWPRQ1 operates at fixed 440 kHz nominal switching frequency with ±20% accuracy, as specified in Section 6.7. Modulation is only active when Rmod is pulled to a defined voltage via resistor.
What is the purpose of the 5Vg output on TPS55065QPWPRQ1?
The 5Vg output on TPS55065QPWPRQ1 is a current-limited, switched 5-V supply (400 mA max) controlled by the 5Vg_ENABLE pin. It provides isolated power for logic-level interfaces (e.g., SCR0, SCR1, CLP) and prevents RESET assertion during capacitive inrush, as detailed in Section 7.3.10 and Figure 17.
TPS55065QPWPRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck-Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.5V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 500mA
- Frequency - Switching:
- 440kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-HTSSOP
TPS55065QPWPRQ1 FAQ
1.How can I place an order for TPS55065QPWPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS55065QPWPRQ1 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 TPS55065QPWPRQ1 reliable?
The price and inventory of TPS55065QPWPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS55065QPWPRQ1 is usually 5 days.
3.What payment methods are accepted for TPS55065QPWPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS55065QPWPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS55065QPWPRQ1?
TPS55065QPWPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS55065QPWPRQ1 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 TPS55065QPWPRQ1?
For technical support, including TPS55065QPWPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS55065QPWPRQ1 requirements.
6.How does Aetrix verify that TPS55065QPWPRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS55065QPWPRQ1 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 TPS55065QPWPRQ1 meets industry standards.
7.What is the process for return or replacement of TPS55065QPWPRQ1?
All TPS55065QPWPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS55065QPWPRQ1, 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 TPS55065QPWPRQ1 part is unused and in its original packaging.
Return procedure for TPS55065QPWPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS55065QPWPRQ1 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…
