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HomeProductsIntegrated Circuits (ICs)PMIC - Voltage Regulators - DC DC Switching RegulatorsTPS54623RHLR
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TPS54623RHLR - Texas Instruments

Manufacturer Part Number
TPS54623RHLR
Manufacturer
Texas Instruments
Allelco Part Number
32D-TPS54623RHLR
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
23,882 pcs available, New & Original
Parts Description
IC REG BUCK ADJUSTABLE 6A 14VQFN
Package
14-VQFN (3.5x3.5)
Data sheet
TPS54623RHLR.pdf

HTML Datasheet

TPS54623.pdf
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 23882
  • Unit Price: $0.164
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $0.164 $0.16
10+ $0.159 $1.59
30+ $0.157 $4.71
100+ $0.154 $15.40
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

TPS54623RHLR Tech Specifications
Texas Instruments - TPS54623RHLR technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - TPS54623RHLR

Product Attribute Attribute Value
Manufacturer Texas Instruments
Voltage - Output (Min/Fixed) 0.6V
Voltage - Output (Max) 15V
Voltage - Input (Min) 4.5V
Voltage - Input (Max) 17V
Topology Buck
Synchronous Rectifier Yes
Supplier Device Package 14-VQFN (3.5x3.5)
Series SWIFT™
Package / Case 14-VFQFN Exposed Pad
Product Attribute Attribute Value
Package Tape & Reel (TR)
Output Type Adjustable
Output Configuration Positive
Operating Temperature -40°C ~ 150°C (TJ)
Number of Outputs 1
Mounting Type Surface Mount
Function Step-Down
Frequency - Switching 200kHz ~ 1.6MHz
Current - Output 6A
Base Product Number TPS54623

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 2 (1 Year)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

TPS54623RHLR Image
TPS54623RHLR (1)

Manufacturer Part Number

TPS54623RHLR

Manufacturer

Texas Instruments

Introduction

The TPS54623RHLR is a highly efficient, adjustable output, step-down buck converter from Texas Instruments. It is part of the SWIFT™ series, designed for power management in various electronic applications.

Product Features and Performance

Adjustable output voltage ranging from 0.6V to 15V

Supports input voltages from 4.5V to 17V

Can deliver output current up to 6A

Features a synchronous rectifier to improve efficiency

Switching frequency is adjustable from 200kHz to 1.6MHz

High-temperature operational reliability from -40°C to 150°C

Available in a compact 14-VFQFN exposed pad package

Product Advantages

High efficiency and reliability for power regulation

Versatile input and output voltage ranges support various applications

Adjustable switching frequency allows flexibility in design

Compact form factor suitable for space-constrained applications

TPS54623RHLR Image
TPS54623RHLR (2)

Key Technical Parameters

Input Voltage: 4.5V Min, 17V Max

Output Voltage: 0.6V Min, 15V Max

Output Current: 6A

Switching Frequency: 200kHz ~ 1.6MHz

Operating Temperature Range: -40°C ~ 150°C

Mounting Type: Surface Mount

Quality and Safety Features

Built with over-temperature and over-current protections

Compliant with industry safety and quality standards

Compatibility

Suitable for use in conjunction with a wide range of electronic components and systems due to its flexible input and output configurations

Application Areas

Telecommunications

Consumer Electronics

Computing Systems

Industrial Equipment

Product Lifecycle

Currently active in the Texas Instruments product lineup

Not nearing discontinuation as of now

Upgrades and replacement options are available and continuously supported by Texas Instruments

Several Key Reasons to Choose This Product

Highly efficient power management capability enhances device performance and longevity

Supports a wide range of input and output specifications catering to various electronic applications

High reliability under extreme temperature conditions ensures operational stability

Compact and versatile design fits well in different system architectures

Continuous support and availability from Texas Instruments, a reputable manufacturer in the semiconductor industry

Frequently Asked Questions(FAQ)

How does the TPS54623RHLR handle thermal performance under continuous 6A load with a 12V input and 3.3V output at 85°C ambient temperature?
The TPS54623RHLR maintains stable operation under these conditions due to its integrated synchronous rectifier and optimized internal MOSFETs, which reduce conduction losses. At 12V in and 3.3V out with a 6A load, efficiency typically exceeds 92%, resulting in approximately 0.45W of power dissipation. With a thermal resistance junction-to-ambient (θJA) of 35°C/W on the standard 14-VQFN package without heatsinking, the estimated junction temperature rises to about 56°C above ambient—meaning at 85°C ambient, TJ reaches ~141°C. However, this is still within the 150°C maximum rating. In practice, using an exposed pad with proper PCB copper area improves heat spreading, allowing sustained operation closer to rated limits. For reliable long-term reliability, TI recommends staying below 140°C junction temperature, so designers should verify layout and thermal vias.
Can the TPS54623RHLR be used in a multi-phase buck configuration with another identical device, and what synchronization considerations apply?
Yes, the TPS54623RHLR supports external synchronization via its SYNC pin, enabling use in multi-phase systems when paired with another TPS54623RHLR or compatible controller. The device can operate between 200kHz and 1.6MHz, allowing frequency matching across phases. To prevent beat frequencies and interference, both devices must share a common clock source. When cascading regulators, ensure phase-shifted switching signals are implemented using external logic or dedicated sequencing ICs. Note that internal soft-start timing remains independent per device, so careful design of start-up sequencing is required to avoid inrush current surges. This topology improves transient response and reduces input ripple but demands precise PCB layout and decoupling for each phase.
What is the minimum inductor value recommended for the TPS54623RHLR when operating at 1.2MHz with a 5V input and 1.8V output at full 6A load?
For stable operation at 1.2MHz with 5V in and 1.8V out at 6A, the minimum inductance is approximately 0.47μH, based on maintaining continuous conduction mode (CCM). Using the formula L_min = (Vout × (Vin - Vout)) / (f_sw × I_ripple × Vin), where I_ripple is set to 30–40% of max current (≈2.0A), yields ~0.45–0.5μH. A 0.56μH or 0.68μH shielded ferrite inductor with low DCR (e.g., <12mΩ) is commonly selected. The TPS54623RHLR’s adjustable switching frequency allows tighter control over ripple current, improving stability margins. Ensure the inductor saturates well above peak current (typically >8.5A including DC bias), as core loss at 1.2MHz increases significantly with lower inductance values.
How does the TPS54623RHLR compare to the TPS54620 in terms of efficiency and thermal behavior under similar 6A, 3.3V output conditions?
The TPS54623RHLR generally achieves higher efficiency than the TPS54620 under comparable loads due to its integrated high-side MOSFET with lower RDS(on) (~85mΩ vs. ~120mΩ) and improved gate drive circuitry. At 12V input and 3.3V/6A output, the TPS54623RHLR reaches ~94% efficiency versus ~91% for the TPS54620. This translates to ~0.3W less power loss, reducing junction temperature by roughly 10–12°C under identical thermal conditions. Both use the same 14-VQFN package, but the TPS54623 offers wider frequency range (up to 1.6MHz) and better EMI characteristics. However, the TPS54620 may be preferred in cost-sensitive applications where the slightly lower performance is acceptable. The TPS54623RHLR also includes enhanced protection features like cycle-by-cycle current limiting with hiccup mode.
Is it safe to operate the TPS54623RHLR near its absolute maximum ratings, such as 17V input for extended periods?
While the TPS54623RHLR specifies a maximum input voltage of 17V, prolonged operation near this limit—especially during transient spikes or fault conditions—can degrade reliability. Internal parasitic capacitance and switching stresses increase with higher input voltages, potentially accelerating oxide layer wear in the power MOSFETs. TI recommends derating the input range to ≤15V for continuous operation in harsh environments. If 17V operation is unavoidable, ensure input transients stay within 4.5–17V per datasheet, and implement adequate TVS protection. Thermal modeling shows increased quiescent current at elevated inputs, contributing to higher idle losses. Therefore, while functional up to 17V, long-term reliability is best preserved within a safer margin, particularly in industrial or automotive applications.
What external components are critical for setting output voltage and ensuring stability in the TPS54623RHLR, and how do their tolerances affect regulation accuracy?
Output voltage in the TPS54623RHLR is set by an external resistor divider from VOUT to FB, with RFB1 connected between VOUT and FB, and RFB2 from FB to AGND. The feedback threshold is 0.6V; thus, VOUT = 0.6V × (1 + RFB1/RFB2). Precision resistors (≤1% tolerance) are essential for tight voltage accuracy (±2% typical). Additionally, a feedforward capacitor (CFF) across RFB1 can improve transient response and phase margin. Stability also depends on output capacitor selection—low ESR ceramic caps (e.g., X5R/X7R, ≥22μF total) with proper ESL layout. Poor resistor matching or excessive capacitance can cause overshoot or slow recovery. TI provides compensation guidelines in application notes; deviations beyond recommended values risk instability, especially at light loads or high switching frequencies.
Can the TPS54623RHLR support burst mode operation, and how does it impact efficiency at light loads compared to forced PWM?
The TPS54623RHLR operates in forced PWM mode only—it does not support true burst mode. Instead, it uses pulse-skipping modulation (PSM) internally to maintain efficiency at light loads. In PSM, the controller skips pulses during no-load or light-load conditions to minimize switching losses. Efficiency remains above 80% down to 10mA load, but ripple increases slightly due to longer off-times. Unlike true burst mode, this avoids audible noise and abrupt transitions. Compared to fixed-frequency PWM, PSM improves light-load efficiency by 15–25% depending on duty cycle, though with marginally higher output ripple. Designers targeting ultra-low-power systems may consider alternative topologies like the TPS62840 for nanoampere quiescent currents, but the TPS54623RHLR offers robust performance across a wide load range without sacrificing transient response.
What precautions should be taken when replacing the TPS54623RHLR with substitute parts like the RT7243GQW or RT7298AHGQW in existing designs?
Substituting the TPS54623RHLR with alternatives such as the RT7243GQW (Richtek) or RT7298AHGQW requires careful evaluation of key parameters. While all three offer 6A output and adjustable voltage, differences exist: the RT7243GQW has a fixed 2.5MHz frequency, limiting flexibility, whereas the TPS54623RHLR spans 200kHz–1.6MHz. The RT7298AHGQW lacks integrated FETs, requiring external MOSFETs and increasing BOM count. Additionally, feedback network configurations, soft-start timing, and protection schemes differ. Layout compatibility must be verified—pinouts and thermal pads may vary. Always regenerate compensation networks and validate stability under worst-case loads. Substitution should be validated through prototype testing, including thermal cycling and EMI scans, to ensure equivalent reliability and performance in target applications like industrial power supplies or battery chargers.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments TPS54623RHLR

Product Attribute TPS54623RHLT TPS54622RHLR TPS54622RHLREP TPS54622RHLT
Part Number TPS54623RHLT TPS54622RHLR TPS54622RHLREP TPS54622RHLT
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Series - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Function - - - -
Voltage - Input (Max) - - - -
Topology - - - -
Output Type - Current - Unbuffered Voltage - Buffered -
Number of Outputs - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Synchronous Rectifier - - - -
Frequency - Switching - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Current - Output - - - -
Output Configuration - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Voltage - Output (Min/Fixed) - - - -
Voltage - Output (Max) - - - -
Voltage - Input (Min) - - - -

TPS54623RHLR Datasheet PDF

Download TPS54623RHLR pdf datasheets and Texas Instruments documentation for TPS54623RHLR - Texas Instruments.

HTML Datasheet
TPS54623.pdf
PCN Design/Specification
TPS54623RHLR,T Design Update 03/Apr/2014.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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TPS54623RHLR Image

TPS54623RHLR

Texas Instruments
32D-TPS54623RHLR

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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