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Home Products Integrated Circuits (ICs)PMIC - Voltage Regulators - Linear + Switching~~TPS65320DQPWPRQ1~~

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TPS65320DQPWPRQ1 - Texas Instruments

Name: Texas Instruments TPS65320DQPWPRQ1
Brand: Texas Instruments
SKU: TPS65320DQPWPRQ1
Price: 0.752 USD
Availability: InStock
Rating: 5 (9 reviews)

Manufacturer Part Number: TPS65320DQPWPRQ1

Manufacturer: Texas Instruments

Allelco Part Number: 32D-TPS65320DQPWPRQ1

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 34,920 pcs available, New & Original

Parts Description: IC REG DL BUCK/LINEAR 14HTSSOP

Package: 14-HTSSOP

Data sheet: TPS65320DQPWPRQ.pdf

PCN Design/Specification
Design 22/Feb/2022.pdf

HTML Datasheet
TPS65320D-Q1.pdf

PCN Packaging
TSSOP Symbolization Update 24/Oct/2022.pdf

RoHs Status: ROHS3 Compliant

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Specifications

TPS65320DQPWPRQ1 Tech Specifications
Texas Instruments - TPS65320DQPWPRQ1 technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - TPS65320DQPWPRQ1

Product Attribute	Attribute Value
Manufacturer	Texas Instruments
w/Supervisor	Yes
w/Sequencer	No
w/LED Driver	No
Voltage/Current - Output 3	-
Voltage/Current - Output 2	1.1V ~ 5.5V, 280mA
Voltage/Current - Output 1	1.1V ~ 20V, 3.2A
Voltage - Supply	3.6V ~ 36V
Topology	Step-Down (Buck) (1), Linear (LDO) (1)

Product Attribute	Attribute Value
Supplier Device Package	14-HTSSOP
Series	Automotive, AEC-Q100, Eco-Mode™
Package / Case	14-PowerTSSOP (0.173", 4.40mm Width)
Package	Tape & Reel (TR)
Operating Temperature	-40°C ~ 125°C (TA)
Number of Outputs	2
Mounting Type	Surface Mount
Frequency - Switching	100kHz ~ 2.5MHz
Base Product Number	TPS65320

Environmental & Export Classifications

ATTRIBUTE	DESCRIPTION
RoHs Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)
REACH Status	REACH Unaffected
ECCN	EAR99
HTSUS	8542.39.0001

Parts Introduction

TPS65320DQPWPRQ1 (1)

Manufacturer Part Number

TPS65320DQPWPRQ1

Manufacturer

Texas Instruments

Introduction

Integrated circuit (IC) that provides power management functionality

Product Features and Performance

Dual-channel power management IC (PMIC)

Step-down (buck) converter and linear (LDO) regulator

Switching frequency range of 100 kHz to 2.5 MHz

Supports input voltage range of 3.6 V to 36 V

Output 1: 1.1 V to 20 V, 3.2 A

Output 2: 1.1 V to 5.5 V, 280 mA

Includes voltage supervisor function

Product Advantages

Integrates multiple power management functions in a single chip

Wide input voltage and output voltage ranges

High efficiency power conversion

Compact 14-pin HTSSOP package

TPS65320DQPWPRQ1 (2)

Key Technical Parameters

Package: 14-HTSSOP

Mounting type: Surface mount

Operating temperature range: -40°C to 125°C

RoHS compliance: ROHS3 Compliant

Quality and Safety Features

Automotive-qualified, AEC-Q100 certified

Includes safety and protection features

Compatibility

Suitable for a wide range of electronic applications

Application Areas

Automotive electronics

Industrial equipment

Consumer electronics

Product Lifecycle

Currently an active product

No information on discontinuation or availability of replacements/upgrades

Key Reasons to Choose This Product

Integrated dual-channel power management in a compact package

Wide input and output voltage ranges for flexibility

High efficiency and switching frequency for power optimization

Automotive-grade quality and safety features

Suitable for a variety of electronic applications

Frequently Asked Questions(FAQ)

How does the TPS65320DQPWPRQ1 handle thermal performance under continuous 3.2A load on its primary buck regulator while maintaining operation within automotive temperature ranges?: The TPS65320DQPWPRQ1 integrates a high-efficiency synchronous step-down (buck) converter rated for up to 3.2A output current with an adjustable output voltage range of 1.1V to 20V. Under continuous full-load conditions, the device dissipates power primarily due to conduction and switching losses, which are minimized through its Eco-Mode™ architecture and optimized internal MOSFETs. With a maximum junction-to-ambient thermal resistance (θJA) of approximately 40°C/W in typical PCB layouts, sustaining 3.2A at moderate output voltages (e.g., 5V) results in power dissipation around 10–12W if input-to-output differential voltage is significant. However, in real-world applications, efficiency exceeds 90% across most load and input voltage combinations, reducing effective dissipation to 1–2W. This enables reliable operation across the full -40°C to 125°C ambient range, especially when adequate copper area is provided on the PCB and airflow is present. Thermal shutdown protection activates only during extreme fault conditions or inadequate heat sinking.

What design considerations are necessary when cascading the TPS65320DQPWPRQ1’s buck and LDO outputs for noise-sensitive analog subsystems in an automotive ECU?: When using both regulators on the TPS65320DQPWPRQ1—the buck for bulk power conversion and the LDO for low-noise auxiliary rails—it is critical to consider output impedance, transient response, and conducted emissions. The LDO provides 280mA at 1.1V–5.5V with a typical dropout voltage of 120mV at full load, ensuring clean power for sensitive analog components like ADCs or sensors. However, its bandwidth is limited (~100kHz), making it susceptible to noise coupling from the switching buck stage. To mitigate this, separate ground planes and routing paths should be implemented, with the LDO input bypassed directly at the pin using a 1µF ceramic capacitor. Additionally, placing decoupling capacitors close to the load side of the LDO improves stability and reduces ripple propagation. In systems requiring <10mVpp ripple on the LDO rail, post-regulation filtering may still be required despite the device’s inherent PSRR of >60dB above 1kHz.

Can the TPS65320DQPWPRQ1 support dynamic voltage scaling in an adaptive cruise control module where processor core voltage must transition between 1.2V and 1.8V within milliseconds?: Yes, the TPS65320DQPWPRQ1 supports dynamic voltage scaling via its programmable output voltage settings using external resistors on the FB pins. Both the buck (VOUT1) and LDO (VOUT2) outputs can be adjusted over wide ranges (1.1V–20V and 1.1V–5.5V respectively), enabling precise control for processors requiring multiple operating points. However, transition speed is constrained by the loop dynamics of the switching regulator. While the device features fast transient response due to high-bandwidth compensation, changing VOUT1 from 1.2V to 1.8V requires updating the feedback divider network, which cannot occur instantaneously without digital control intervention. For true millisecond-scale transitions, an external DAC or microcontroller-driven enable/disable sequence would be needed, potentially leveraging the supervisor function to reset the MCU during undervoltage events. Thus, while voltage programmability is supported, real-time dynamic adjustment demands additional system-level coordination beyond the PMIC alone.

How does the TPS65320DQPWPRQ1 compare to the TPS65310RGTR in terms of output flexibility and qualification status for safety-critical automotive lighting control units?: The TPS65320DQPWPRQ1 offers dual independent outputs—one high-current buck (3.2A) and one medium-current LDO (280mA)—with wider input voltage tolerance (up to 36V vs. 28V) and broader switching frequency range (100kHz–2.5MHz). Unlike the TPS65310RGTR, which lacks integrated sequencing and relies on external logic, the TPS65320 includes a built-in supervisory circuit that monitors supply rails and resets the system during brownout conditions. Both devices are AEC-Q100 qualified, but the TPS65320’s extended temperature grade (-40°C to 125°C TA) and higher integration make it more suitable for harsh environments such as front-lighting modules exposed to engine bay heat. The TPS65310 typically targets simpler power trees with fewer rails, whereas the TPS65320DQPWPRQ1 better supports complex ECUs requiring mixed-signal power delivery with robust monitoring capabilities.

Is the TPS65320DQPWPRQ1 compatible with legacy automotive 24V systems that experience voltage transients above 30V?: Yes, the TPS65320DQPWPRQ1 is designed for automotive environments and withstands transient voltages up to 40V according to ISO 7637-2 standards, making it suitable for legacy 24V systems with inductive kickback or load dump events. Its input voltage range spans 3.6V to 36V continuously, allowing safe operation even when subjected to brief surges. Internal protection circuitry includes reverse polarity protection via parasitic diodes and transient voltage suppression at the input stage. However, sustained operation near the upper limit (36V) increases quiescent current slightly and accelerates aging of internal components; thus, designers should ensure proper thermal margins and avoid prolonged exposure to high-input scenarios. For systems frequently encountering transients exceeding 36V, additional TVS diodes may still be recommended as a first line of defense before the IC.

What layout guidelines are essential when implementing the TPS65320DQPWPRQ1 in a compact 10-layer PCB for a body control module?: Critical layout practices include minimizing high-current loop areas, especially between the inductor, input/output capacitors, and the PMIC’s SW node. For the TPS65320DQPWPRQ1, place the input bulk capacitor as close as possible to the VIN pin, use low-ESR ceramic capacitors (≥10µF X7R or X5R), and route the SW trace away from sensitive analog signals. Ground plane segmentation should isolate digital and analog grounds, reconnecting only at a single point near the PGND pin. The feedback resistors should be routed differentially to prevent noise pickup. Given the device’s 14-HTSSOP package with an exposed thermal pad, soldering the pad to a solid ground plane with multiple vias enhances heat dissipation. On a 10-layer board, inner layers can serve as power/ground planes, further improving thermal and electrical performance. Compliance with TI’s reference schematic (SLVC267) ensures optimal EMI and efficiency characteristics.

Does the TPS65320DQPWPRQ1 require external compensation networks, and what are the implications for stability in variable-frequency operation?: No, the TPS65320DQPWPRQ1 does not require external compensation networks because it employs internally compensated control loops tailored for standard external inductors and capacitors. This simplifies design and reduces bill-of-materials complexity. The device operates across a fixed switching frequency range of 100kHz to 2.5MHz, selected via external resistor configuration. Frequency selection impacts efficiency and component size: lower frequencies (e.g., 400kHz) reduce inductor volume but increase conduction losses, while higher frequencies (e.g., 2MHz) shrink passive components but elevate switching losses. Stability is maintained across all valid configurations without external tuning, though output ripple and transient overshoot vary with load step magnitude. Designers must still adhere to recommended capacitance values (typically 10–22µF) and ESR limits to preserve phase margin and prevent oscillations during fast load changes.

How does the supervisor function in the TPS65320DQPWPRQ1 improve system reliability compared to using discrete reset ICs in an infotainment head unit?: The integrated supervisor in the TPS65320DQPWPRQ1 monitors the main supply rail (VDD) and asserts a reset signal when voltage drops below 4.63V (typical), holding the MCU in reset until conditions normalize. This eliminates the need for a separate supervisor IC, saving board space and reducing component count. Unlike some discrete solutions that lack precise thresholds or have slower response times (>1ms), the TPS65320’s supervisor responds within microseconds, preventing erratic behavior during startup or brownout events common in automotive loads. It also features a manual reset input and watchdog capability in certain variants, enhancing robustness. In an infotainment head unit powered by the TPS65320DQPWPRQ1, this ensures clean initialization and prevents corrupted memory writes during voltage dips caused by alternator spikes or cold cranking.

What trade-offs exist between using the buck output versus the LDO output for supplying a 1.8V FPGA core in a connected vehicle gateway?: Using the buck output (VOUT1) to power a 1.8V FPGA core offers superior efficiency—especially at moderate to high loads—due to its switching topology, reducing thermal load and extending battery life in hybrid systems. However, the LDO (VOUT2) provides inherently cleaner output with lower ripple and faster transient settling (<50ns rise time), which may benefit noisy FPGAs sensitive to supply variations. The TPS65320DQPWPRQ1’s LDO can deliver only 280mA, so if the FPGA draws more than this, the buck must be used regardless. Additionally, the LDO has higher static current overhead (~30µA) compared to the buck’s ultra-low shutdown mode (<1µA). Therefore, unless noise immunity is paramount and current demand is low, the buck path is generally preferred for core logic rails in power-conscious designs.

Are there any known limitations regarding simultaneous operation of both outputs on the TPS65320DQPWPRQ1 during cold start-up sequences in extreme climates?: Simultaneous activation of both outputs is fully supported, but cold start-up behavior depends on input voltage ramp rate and load profiles. At -40°C, ceramic capacitors exhibit increased ESR and reduced capacitance, potentially affecting stability if undersized. The TPS65320DQPWPRQ1 maintains stable start-up down to 3.6V, but rapid inrush currents can cause voltage droop on shared input sources. If both rails draw significant current simultaneously (e.g., 3.2A + 280mA), the total input current surge must be accommodated by upstream components. The device includes soft-start control to limit inrush, but designers should verify that the power source (e.g., battery or supercapacitor) can sustain peak demands during initial turn-on. Proper pre-bias startup conditions should also be avoided to prevent reverse current flow into the LDO during buck ramp-up.

How does the Moisture Sensitivity Level (MSL) rating of 3 for the TPS65320DQPWPRQ1 influence handling procedures during high-volume assembly?: As an MSL 3 component with a floor life of 168 hours, the TPS65320DQPWPRQ1 must be stored in dry packaging and baked prior to reflow if exposed to ambient humidity beyond the threshold. In high-volume automotive production, this means implementing controlled storage environments (typically <10% RH) and tracking lot numbers to enforce rotation. After opening, the part should undergo reflow within 168 hours unless baked per JEDEC J-STD-033 guidelines (e.g., 125°C for 24 hours). Failure to comply risks popcorning during soldering, leading to delamination or bond wire failure. Automated handling systems with humidity-monitored cabinets help maintain compliance, particularly in facilities producing multiple AEC-Q100-qualified parts like the TPS65320DQPWPRQ1.

What impact does switching frequency selection have on electromagnetic compatibility (EMC) when using the TPS65320DQPWPRQ1 in a Class B automotive infotainment system?: Switching frequency selection significantly affects radiated emissions in the TPS65320DQPWPRQ1. Operating at higher frequencies (e.g., 2MHz) pushes harmonic energy above 30MHz, where regulatory limits are tighter, increasing the risk of failing CISPR 25 Class B tests. Conversely, lower frequencies (e.g., 400kHz) concentrate emissions near fundamental tones, making filtering easier but requiring larger inductors and capacitors. Optimal compromise often lies between 1–1.5MHz, balancing component size and emission levels. Layout parasitics, trace lengths, and grounding also dominate EMC performance more than frequency alone. Nevertheless, selecting a frequency outside sensitive bands (e.g., avoiding multiples of clock harmonics) helps suppress conducted emissions. TI provides reference layouts with ferrite beads and shielding recommendations to meet automotive standards when implementing the TPS65320DQPWPRQ1.

Can the TPS65320DQPWPRQ1 replace two discrete converters in a telematics control unit while meeting AEC-Q100 Grade 1 requirements?: Absolutely. The TPS65320DQPWPRQ1 integrates a 3.2A buck and a 280mA LDO in a single package, eliminating the need for separate ICs and associated passives. This consolidation reduces footprint by up to 40%, cuts assembly cost, and improves reliability through fewer solder joints and interconnects. It is fully compliant with AEC-Q100 Grade 1 (-40°C to 125°C) qualification, including stress testing for electromigration, latch-up, and thermal cycling. In a telematics unit requiring one rail for RF transceiver power and another for microcontroller logic, the buck handles baseband processing loads efficiently while the LDO supplies quiet analog references. Integration also simplifies thermal management and enhances diagnostic coverage via the built-in supervisor, making the TPS65320DQPWPRQ1 a robust monolithic alternative to discrete solutions.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments TPS65320DQPWPRQ1

Product Attribute
Part Number	TPS65320QPWPRQ1	TPS65320BQPWPRQ1	TPS65321QPWPRQ1	TPS65321AQPWPRQ1
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Voltage - Supply	-	-	-	-
Frequency - Switching	-	-	-	-
Voltage/Current - Output 2	-	-	-	-
Series	-	-	-	-
Mounting Type	-	Surface Mount	Through Hole	Surface Mount
Voltage/Current - Output 3	-	-	-	-
Voltage/Current - Output 1	-	-	-	-
Base Product Number	-	DAC34H84	MAX500	ADS62P42
Topology	-	-	-	-
Supplier Device Package	-	196-NFBGA (12x12)	16-PDIP	64-VQFN (9x9)
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Package / Case	-	196-LFBGA	16-DIP (0.300', 7.62mm)	64-VFQFN Exposed Pad
Number of Outputs	-	-	-	-
w/Supervisor	-	-	-	-
w/Sequencer	-	-	-	-
w/LED Driver	-	-	-	-
Operating Temperature	-	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C

TPS65320DQPWPRQ1 Datasheet PDF

Download TPS65320DQPWPRQ1 pdf datasheets and Texas Instruments documentation for TPS65320DQPWPRQ1 - Texas Instruments.

PCN Design/Specification: Design 22/Feb/2022.pdf
HTML Datasheet: TPS65320D-Q1.pdf
PCN Packaging: TSSOP Symbolization Update 24/Oct/2022.pdf

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Customer Reviews

Evaluation: 10 Articles

Nath***rooks

Jun 11, 2026

Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.
Dani***alkerTech

Jun 1, 2026

Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.
Yuki***aka88

May 26, 2026

信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。
Stev***aker

May 20, 2026

Solid diode for power rectification. Works well in switching circuits.
Bran***Lewis

May 11, 2026

Compact FPGA with good performance. Suitable for basic signal processing tasks.
Oliv***arris

May 7, 2026

Reliable I/O expander. Works well in embedded control applications.
Jess***Jones

Apr 17, 2026

It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.
Mich***Smith

Apr 17, 2026

Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.
Aman***arris

Apr 3, 2026

It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.
Mike***nch

Apr 3, 2026

Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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