Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Texas Instruments TPS54622RHLT

Name: TPS54622RHLT
Brand: Texas Instruments
SKU: TPS54622RHLT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: TPS54622RHLT

Manufacturer:: Texas Instruments

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 14-VFQFN Exposed Pad

Datasheet:: TPS54622RHLT.pdf

Description:: IC REG BUCK ADJ 6A 14VQFN

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,166

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

TPS54622RHLT from Texas Instruments is a 4.5-V to 17-V input, 6-A synchronous step-down DC/DC converter in a thermally enhanced 3.5-mm × 3.5-mm VQFN-14 package with exposed thermal pad. It integrates 26-mΩ high-side and 19-mΩ low-side N-channel MOSFETs, features 200-kHz to 1.6-MHz adjustable switching frequency, 0.6-V ±1% reference, hiccup current limiting, and power-good monitoring - used in high-density point-of-load regulation for networking and optical infrastructure.

For engineers reviewing the TPS54622RHLT datasheet, TPS54622RHLT pinout, TPS54622RHLT application, or TPS54622RHLT equivalent, key selection considerations include its split-rail PVIN (1.6 V–17 V) support, monotonic prebiased startup, RT/CLK synchronization capability, BOOT-PH UVLO threshold (2.1 V), and thermal shutdown hiccup recovery (16384 cycles).

Technical Context

The TPS54622RHLT implements constant-frequency peak current-mode control with internal slope compensation to prevent subharmonic oscillation across 0–100% duty cycle. Its error amplifier (1300 μA/V transconductance, 1000–3100 V/V DC gain) compares VSENSE against either the 0.6-V reference or SS/TR voltage, enabling tracking and sequencing.

Protection architecture includes cycle-by-cycle high-side current limit (8–14 A), bidirectional low-side sourcing/sinking limits (6.5–15 A / 2–4 A), overvoltage lockout (92–106% Vref), and thermal shutdown at 160–175°C with 10°C hysteresis and hiccup restart after 16384 cycles.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	VIN: 4.5 V–17 V; PVIN: 1.6 V–17 V - enables split-rail operation for low-voltage power stages while maintaining control logic supply integrity.
Output Current	6 A continuous - supports high-current FPGA, ASIC, and DSP core rails without external current sharing.
Switching Frequency	200 kHz–1.6 MHz (RT resistor or external clock sync) - allows optimization of inductor size vs. efficiency and EMI filtering requirements.
Voltage Reference	0.6 V ±1% over –40°C to +150°C - ensures stable output regulation across industrial temperature range with minimal drift.
Current Limit Threshold	High-side: 8–14 A; Low-side sink: 2–4 A - provides robust overload protection while preventing reverse-current runaway during light-load or prebias conditions.
Thermal Shutdown	160°C–175°C trip, 10°C hysteresis, hiccup restart after 16384 cycles - avoids latch-off failure and enables autonomous recovery in thermally constrained PCB layouts.
Power Good Accuracy	±2% Vref window (94–104% for "good", 92–106% for fault) - delivers precise system-level power sequencing and fault detection without external comparators.

Pinout & Package

TPS54622RHLT uses a 14-pin VQFN package (3.5 mm × 3.5 mm) with an exposed thermal pad (Pin 15) requiring solder connection to PCB ground plane for thermal and electrical performance.

Pin/Terminal	Circuit Role	Design Meaning
BOOT (13)	Bootstrap gate drive supply	Connects to external ceramic capacitor (0.1–1 μF) between BOOT and PH; enables high-side MOSFET drive; monitored for UVLO (2.1 V threshold).
COMP (8)	Error amplifier output	Interface for Type II/III compensation network; drives current comparator; requires RC network to ground for stability.
EN (10)	Enable control input	Logic-high (>1.21 V) enables operation; internal pullup allows floating enable; configurable UVLO using resistor divider on PVIN/VIN.
GND (2,3)	Analog/digital ground return	Low-impedance return path for control circuitry and low-side MOSFET; must be tied to PowerPad for optimal thermal performance.
PH (11,12)	Switch node	Drives external inductor; carries high di/dt; requires tight layout to minimize EMI and ringing; minimum on-time 94 ns.
PVIN (4,5)	Power stage input supply	Supplies high-current MOSFETs; supports down to 1.6 V - enables use with intermediate bus architectures (e.g., 3.3 V or 5 V input to 1.2 V output).
PWRGD (14)	Open-drain power-good flag	Asserts low during undervoltage, overvoltage, thermal shutdown, or slow-start; requires external pullup; valid only when VIN ≥ 0.6 V.
RT/CLK (1)	Frequency configuration	Dual-function: resistor-to-ground sets frequency (200 kHz–1.6 MHz); external clock edge synchronizes switching - eliminates beat frequencies in multi-rail systems.
SS/TR (9)	Slow-start/tracking reference	Capacitor sets ramp time; overrides internal 0.6-V reference for sequencing; must exceed 1.4 V before low-side sinking enabled (prebias safety).
VIN (6)	Control circuitry supply	Provides bias for internal logic, gate drivers, and error amplifier; must be ≥4.5 V; independent of PVIN for flexible rail partitioning.
VSENSE (7)	Feedback input	Inverting input of gm error amplifier; monitors output via resistor divider; accuracy directly impacts output regulation (±1% Vref referenced).
Exposed Thermal Pad (15)	Thermal and signal ground	Must be soldered to PCB ground plane; reduces RθJB to 11.4°C/W; critical for sustaining 6-A load at TJ ≤ 150°C.

Key Features

Feature	Design Value
Integrated 26-mΩ/19-mΩ MOSFETs	Eliminates external power switches and associated gate-drive complexity; achieves >90% efficiency at 12-V input/1.2-V/6-A output.
Hiccup current limiting	Prevents thermal runaway during sustained overload by cycling off for 16384 switching cycles before retry - protects PCB and load without latch-off.
Monotonic start-up into prebiased outputs	Blocks low-side sinking until SS/TR ≥ 1.4 V - prevents output discharge and ensures clean power-up in hot-swap or multi-rail systems.
Split power rail (VIN/PVIN)	Decouples control logic (VIN: 4.5–17 V) from power stage (PVIN: 1.6–17 V), enabling efficient low-voltage intermediate bus conversion (e.g., 3.3 V → 1.0 V).
Synchronization via RT/CLK pin	Supports both resistor-programmed frequency and external clock edge alignment - essential for noise-sensitive applications like ADC/DAC power supplies.

Applications

Telecom Point-of-Load Regulation	Optical Transceiver Power Supply
Use Scenario: Providing tightly regulated 1.2-V/6-A core supply to high-speed SerDes in 100G optical line cards with strict ripple and transient response requirements. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering stable core voltage; RT/CLK synchronized to system clock to suppress switching noise in analog front-end. Use Value: Integrated MOSFETs and 0.6-V ±1% reference ensure <10 mV output deviation under 5-A step load; hiccup protection avoids system reset during fiber-link fault events.	Use Scenario: Generating 3.3-V bias for laser driver ICs in coherent optical modules where EMI must avoid interfering with RF data paths. IC Role / Device Role / Timing Role: Secondary buck converter operating at 1.2 MHz (RT-set) to shift noise spectrum away from 2.5-GHz data bands; PWRGD signals laser enable readiness. Use Value: 200-kHz–1.6-MHz frequency agility enables EMI compliance; monotonic startup prevents laser bias overshoot that could damage edge-emitting lasers.
Industrial FPGA Core Supply	Networking Switch ASIC Rail
Use Scenario: Delivering 0.85-V/5-A dynamic core voltage to Xilinx Kintex-7 FPGA in programmable logic controllers with wide ambient temperature variation (–40°C to +85°C). IC Role / Device Role / Timing Role: High-efficiency step-down regulator with thermal hiccup protection; SS/TR pin used for power sequencing with I/O bank supplies. Use Value: 0.6-V reference stability over temperature ensures <±1.5% output tolerance across full range; exposed thermal pad sustains 6-A load at 85°C ambient without derating.	Use Scenario: Supplying 1.8-V/6-A to Broadcom Tomahawk switch ASIC in data center top-of-rack switches requiring high density and reliability. IC Role / Device Role / Timing Role: Primary POL regulator with PWRGD cascaded to downstream supervisors; EN pin configured for system-level UVLO coordination. Use Value: Dual current limits (high-side + low-side sink) prevent inductor saturation during burst traffic; hiccup mode avoids catastrophic failure during short-circuit events on backplane.

Telecom Point-of-Load Regulation

Optical Transceiver Power Supply

Use Scenario: Providing tightly regulated 1.2-V/6-A core supply to high-speed SerDes in 100G optical line cards with strict ripple and transient response requirements.

IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering stable core voltage; RT/CLK synchronized to system clock to suppress switching noise in analog front-end.

Use Value: Integrated MOSFETs and 0.6-V ±1% reference ensure <10 mV output deviation under 5-A step load; hiccup protection avoids system reset during fiber-link fault events.

Use Scenario: Generating 3.3-V bias for laser driver ICs in coherent optical modules where EMI must avoid interfering with RF data paths.

IC Role / Device Role / Timing Role: Secondary buck converter operating at 1.2 MHz (RT-set) to shift noise spectrum away from 2.5-GHz data bands; PWRGD signals laser enable readiness.

Use Value: 200-kHz–1.6-MHz frequency agility enables EMI compliance; monotonic startup prevents laser bias overshoot that could damage edge-emitting lasers.

Industrial FPGA Core Supply

Networking Switch ASIC Rail

Use Scenario: Delivering 0.85-V/5-A dynamic core voltage to Xilinx Kintex-7 FPGA in programmable logic controllers with wide ambient temperature variation (–40°C to +85°C).

IC Role / Device Role / Timing Role: High-efficiency step-down regulator with thermal hiccup protection; SS/TR pin used for power sequencing with I/O bank supplies.

Use Value: 0.6-V reference stability over temperature ensures <±1.5% output tolerance across full range; exposed thermal pad sustains 6-A load at 85°C ambient without derating.

Use Scenario: Supplying 1.8-V/6-A to Broadcom Tomahawk switch ASIC in data center top-of-rack switches requiring high density and reliability.

IC Role / Device Role / Timing Role: Primary POL regulator with PWRGD cascaded to downstream supervisors; EN pin configured for system-level UVLO coordination.

Use Value: Dual current limits (high-side + low-side sink) prevent inductor saturation during burst traffic; hiccup mode avoids catastrophic failure during short-circuit events on backplane.

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous step-down converter applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MP2315DJ-LF-Z	4.5–28 V input, 6-A, fixed 500-kHz fSW, no RT/CLK sync, no hiccup, smaller 3×3 QFN-12	Lacks synchronization and hiccup protection; limited to simpler, non-critical loads	Choose MP2315DJ-LF-Z only if fixed frequency and lower BOM cost outweigh need for thermal fault autonomy and noise control.
ISL8206MIRZ	3–14 V input, 6-A, integrated inductor, 300-kHz–1-MHz fSW, no SS/TR tracking, larger 15×17.5 mm module	Module-based solution with higher footprint but simplified layout; no external inductor required	Choose ISL8206MIRZ when design schedule prioritizes layout simplicity over board area and thermal pad integration.

Compared with MP2315DJ-LF-Z and ISL8206MIRZ, the TPS54622RHLT uniquely combines RT/CLK synchronization, hiccup recovery, monotonic prebias startup, and split-rail PVIN support - making it the only option suitable for thermally dense, noise-sensitive, and sequenced multi-rail telecom and optical systems.

Availability

TPS54622RHLT is available at Aetrix Electronics and suitable for high-density distributed power systems, high-performance point-of-load regulation, and broadband communications infrastructure requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for TPS54622RHLT 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 TPS54622RHLT belongs to TI's SWIFT™ synchronous buck converter family, engineered specifically for high-current, space-constrained point-of-load applications in networking, optical, and industrial systems demanding precision regulation and robust fault handling.

FAQ

What is the maximum continuous output current supported by the TPS54622RHLT?

The TPS54622RHLT is rated for 6 A continuous output current under recommended operating conditions (TJ ≤ 150°C, proper thermal layout). This rating assumes use of the exposed thermal pad soldered to a 4-layer PCB with thermal vias, PVIN ≥ 4.5 V, and ambient temperature ≤ 85°C. Derating applies at higher temperatures or reduced copper area.

Does the TPS54622RHLT support synchronization to an external clock signal?

Yes, the TPS54622RHLT supports external clock synchronization via the RT/CLK pin. When an external clock signal with appropriate voltage levels (0.8 V low, 2 V high) is applied, the device's internal PLL locks to the falling edge of that clock, enabling deterministic switching alignment - critical for reducing beat frequencies in multi-rail systems.

How does the TPS54622RHLT handle startup into a prebiased output voltage?

The TPS54622RHLT ensures monotonic startup into prebiased outputs by disabling low-side MOSFET sinking until the SS/TR pin voltage exceeds 1.4 V. This prevents reverse current flow and output discharge, making it safe for hot-swap and multi-rail sequencing applications where downstream circuitry may already be powered.

What is the purpose of the split PVIN and VIN pins on the TPS54622RHLT?

The split PVIN (1.6–17 V) and VIN (4.5–17 V) pins allow independent routing of power-stage and control-circuit supplies. PVIN powers the high-current MOSFETs, enabling low-input operation (e.g., 3.3 V bus), while VIN supplies the internal logic and gate drivers - improving efficiency and flexibility in intermediate-bus architectures.

What protection features are built into the TPS54622RHLT?

The TPS54622RHLT includes hiccup-mode overcurrent protection (16384-cycle restart), thermal shutdown with 10°C hysteresis, output overvoltage/undervoltage detection via PWRGD, BOOT-PH UVLO, and bidirectional low-side current limiting. These features collectively prevent damage during faults while enabling autonomous recovery without system intervention.

TPS54622RHLT Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: SWIFT™

Package/Case:: 14-VFQFN Exposed Pad

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):: 4.5V

Voltage - Input (Max):: 17V

Voltage - Output (Min/Fixed):: 0.6V

Voltage - Output (Max):: 15V

Current - Output:: 6A

Frequency - Switching:: 200kHz ~ 1.6MHz

Synchronous Rectifier:: Yes

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-VQFN (3.5x3.5)

TPS54622RHLT FAQ

1.How can I place an order for TPS54622RHLT through Aetrix?

Please submit a Request for Quotation (RFQ) for TPS54622RHLT 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 TPS54622RHLT reliable?

The price and inventory of TPS54622RHLT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54622RHLT is usually 5 days.

3.What payment methods are accepted for TPS54622RHLT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54622RHLT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TPS54622RHLT?

TPS54622RHLT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TPS54622RHLT 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 TPS54622RHLT?

For technical support, including TPS54622RHLT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54622RHLT requirements.

6.How does Aetrix verify that TPS54622RHLT is sourced from the original manufacturer or authorized distributors?

All TPS54622RHLT 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 TPS54622RHLT meets industry standards.

7.What is the process for return or replacement of TPS54622RHLT?

All TPS54622RHLT units undergo pre-shipment inspection (PSI). If there is an issue with TPS54622RHLT, 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 TPS54622RHLT part is unused and in its original packaging.

Return procedure for TPS54622RHLT:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

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.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

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…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

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…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

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…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

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 …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

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…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

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…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

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…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

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…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

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…