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Texas Instruments TPS543620RPYR
- Part No.:
- TPS543620RPYR
- Manufacturer:
- Texas Instruments
- Package:
- 14-PowerVFQFN
- Datasheet:
-
TPS543620RPYR.pdf
- Description:
- IC REG BUCK ADJ 6A 14VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,274
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Product details
Overview
TPS543620RPYR from Texas Instruments is a 4-V to 18-V input, 6-A synchronous step-down DC/DC converter with internally compensated Advanced Current Mode (ACM) control, integrated 25-mΩ high-side and 6.5-mΩ low-side MOSFETs, 0.5-V ±0.5% reference accuracy, and operation up to 2.2 MHz-designed for compact, high-efficiency power rails in wireless infrastructure baseband units.
For engineers reviewing the TPS543620RPYR datasheet, TPS543620RPYR pinout, TPS543620RPYR application, or TPS543620RPYR equivalent, key selection considerations include its fixed-frequency ACM architecture, selectable switching frequencies (500 kHz–2.2 MHz), monotonic start-up into pre-biased outputs, pin-to-pin compatibility with TPS543820RPYR and TPS543320RPYR, and thermal performance validated to 150°C junction temperature.
Technical Context
The TPS543620RPYR implements an emulated peak current mode (Advanced Current Mode) control loop using an internal ramp generator whose amplitude is set by a MODE pin resistor-enabling stable transient response with low-ESR MLCC output capacitors without external compensation. Its three ramp options (1 pF / 2 pF / 4 pF) directly tune loop bandwidth and phase margin across diverse inductor-capacitor combinations.
It supports full-feature system integration via SYNC/FSEL pin for frequency selection or external clock synchronization (400–2600 kHz), EN pin with adjustable UVLO via resistor divider, PGOOD open-drain status flag, and BP5 4.5-V internal LDO for gate driver biasing-while delivering 6-A continuous output current in a thermally enhanced 2.5-mm × 3-mm VQFN-HR package with dual VIN and PGND pins for optimal power delivery and thermal dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4 V to 18 V - supports 5 V, 12 V, and 15 V intermediate bus architectures without derating. |
| Output Current | 6 A continuous - enables single-chip supply for FPGA core, ASIC I/O, or DSP power domains. |
| Switching Frequency | 500 kHz to 2.2 MHz - allows optimization of inductor size vs. efficiency; synchronizable to external clock. |
| Reference Accuracy | 0.5 V ±0.5% over –40°C to +150°C - ensures tight output regulation across industrial temperature range. |
| MOSFET RDS(on) | 25 mΩ (HS) / 6.5 mΩ (LS) - minimizes conduction loss at 6-A load, enabling >92% efficiency at 12 V→1 V, 1 MHz. |
| Protection Features | OVP/UVP on output, input UVLO, overcurrent (peak & sinking), thermal shutdown with 12°C hysteresis - enables robust operation in unattended systems. |
| Package | 14-pin VQFN-HR, 2.5 mm × 3 mm, 0.5-mm pitch - HotRod™ construction reduces parasitic inductance for clean switching waveforms. |
Pinout & Package
TPS543620RPYR uses a 2.5-mm × 3-mm, 14-pin VQFN-HR (HotRod™) package with exposed thermal pad, optimized for low-inductance layout and high-power density. Dual VIN (pins 8,12) and dual PGND (pins 9,11) enable independent high-current paths for reduced ground bounce and improved EMI performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SYNC/FSEL | Frequency select / sync input | Resistor to AGND sets fSW (500–2200 kHz); accepts external square-wave clock (400–2600 kHz) for system-level timing alignment. |
| MODE | Ramp/current limit configuration | Resistor to AGND selects PWM ramp amplitude (1/2/4 pF), soft-start time (0.5–4 ms), and current limit (3-A or 6-A mode). |
| PGOOD | Open-drain power-good indicator | Signals valid regulation (VFB = 89–95% VREF) or fault (VFB = 81–87% or 113–119% VREF) with 5-µA leakage max. |
| FB | Feedback input | Senses output voltage via resistor divider; 500-mV reference enables 0.5–7-V programmable output with ±0.5% accuracy. |
| BP5 | Internal 4.5-V LDO output | Bypassed with 2.2-µF capacitor to AGND; powers internal gate driver and supports external biasing of auxiliary circuits. |
| EN | Enable / adjustable UVLO | Float to enable; resistor divider from VIN sets custom input UVLO threshold with hysteresis; internal pullup current enables default-on behavior. |
| VIN (2×) | Main input power | Pins 8 and 12 accept 4–18 V input; require local 10–100-nF bypass caps to PGND for high-frequency noise suppression. |
| PGND (2×) | Power ground return | Pins 9 and 11 connect internally to low-side MOSFET source; must be tied to PCB power plane with minimal impedance. |
| SW (2×) | Switch node | Pins 10 and 13 are internally connected; drive external inductor; require tight layout to minimize ringing and EMI. |
| BOOT | High-side gate driver supply | Connected via bootstrap capacitor to SW; monitors BOOT-SW UVLO (2.8–3.2 V) to prevent shoot-through during startup. |
| AGND | Analog ground reference | Return for FB, MODE, SYNC/FSEL, EN, PGOOD; must be separated from PGND and joined at single point near IC. |
Key Features
| Feature | Design Value |
|---|---|
| Internally compensated ACM control | Eliminates external compensation network; enables stable operation with ceramic output capacitors and fast load-step response (<10 µs recovery). |
| Selectable PWM ramp options | Three ramp amplitudes (via MODE pin resistor) allow loop tuning for specific inductor DCR and output capacitance-no re-layout required. |
| Monotonic start-up into pre-biased outputs | Prevents reverse current flow during hot-swap or partial-power-up scenarios-critical for multi-rail systems with staggered sequencing. |
| Pin-to-pin compatibility with TPS543820RPYR and TPS543320RPYR | Enables scalable design reuse: TPS543820RPYR (8-A), TPS543320RPYR (3-A) share identical footprint, pinout, and control interface. |
| Thermal performance: RθJA = 58.9°C/W (JEDEC standard) | Supports 6-A operation at full load in 4-layer PCB with thermal pad soldered; junction temperature remains <150°C under typical ambient conditions. |
Applications
| Wireless Infrastructure Baseband | Fiber Optic Line Card |
|---|---|
Use Scenario: Powering FPGA fabric, ADC/DAC interfaces, and SerDes transceivers in 5G macrocell baseband units operating at ambient temperatures up to 85°C. IC Role / Device Role / Timing Role: Primary 1.0-V/1.2-V core regulator delivering 6-A peak current with <1% output deviation under dynamic load steps. Use Value: High-frequency operation (1.5–2.2 MHz) shrinks filter size; 150°C rated junction enables reliable operation without forced air cooling. | Use Scenario: Supplying 3.3-V and 1.8-V rails for optical module controllers, laser drivers, and digital diagnostics in pluggable SFP+/QSFP modules. IC Role / Device Role / Timing Role: Secondary buck converter synchronized to system clock via SYNC pin to reduce beat-frequency EMI in dense line-card layouts. Use Value: Monotonic start-up prevents latch-up when hot-plugging modules; PGOOD enables safe firmware initialization sequence. |
| Test & Measurement Instrumentation | Medical Imaging Signal Chain |
Use Scenario: Generating ultra-low-noise 1.8-V and 2.5-V supplies for high-resolution ADCs and precision amplifiers in benchtop oscilloscopes and spectrum analyzers. IC Role / Device Role / Timing Role: Low-noise, high-PSRR power stage with 0.5-V reference accuracy and <100-µV RMS output ripple at 1-MHz switching. Use Value: Internally compensated ACM avoids phase-margin sensitivity to capacitor aging; BP5 LDO powers analog front-end bias circuits cleanly. | Use Scenario: Providing isolated, tightly regulated 1.2-V and 1.8-V supplies for FPGA-based image reconstruction engines in portable ultrasound and MRI subsystems. IC Role / Device Role / Timing Role: Safety-critical power rail with comprehensive fault protection (OVP/UVP/OTP) and fail-safe PGOOD reporting to host controller. Use Value: Thermal shutdown at 165–175°C with 12°C hysteresis prevents thermal runaway; EN pin supports controlled power sequencing per IEC 62304. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS543820RPYR | 8-A rated, identical pinout/package, same ACM control and feature set; higher RDS(on) HS/LS (20 mΩ / 5.5 mΩ) optimized for lower conduction loss at higher current. | Preferred for systems requiring >6-A headroom or future-proofing; requires verification of thermal margin at full 8-A load. | Select when scaling output current beyond 6 A while retaining layout and firmware compatibility. |
| TPS543320RPYR | 3-A rated, identical pinout/package, same control architecture; lower RDS(on) HS/LS (30 mΩ / 8.5 mΩ) reflects reduced current capability and smaller die. | Ideal for cost-sensitive, lower-power nodes (e.g., auxiliary rails, sensor interfaces) where 6-A capacity is unnecessary. | Select when optimizing BOM cost and thermal footprint for sub-4-A loads without redesigning PCB layout. |
Compared with TPS543620RPYR, TPS543820RPYR delivers higher current with marginally better efficiency above 5 A, while TPS543320RPYR reduces solution size and cost for lighter loads-both maintain identical control features, pinout, and thermal pad geometry for drop-in scalability.
Availability
TPS543620RPYR is available at Aetrix Electronics and suitable for wireless infrastructure, fiber optic networking, and medical imaging applications requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for TPS543620RPYR 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 TPS543620RPYR belongs to TI's SWIFT™ synchronous buck converter family, engineered for high-density, high-efficiency point-of-load regulation in thermally constrained, high-performance communications and industrial systems.
FAQ
What is the maximum recommended output current for TPS543620RPYR under continuous operation?
The TPS543620RPYR is rated for 6-A continuous output current across its full operating temperature range (–40°C to +150°C junction). This rating assumes proper PCB layout with thermal pad soldered to a minimum 200-mm² copper area, 4-layer board construction, and ambient temperature ≤60°C. Derating is required above 60°C ambient per the device's thermal characteristics (RθJA = 58.9°C/W).
Does TPS543620RPYR require external compensation components?
No, the TPS543620RPYR features internally compensated Advanced Current Mode (ACM) control, eliminating the need for external Type-II or Type-III compensation networks. Stability is maintained across output capacitor types-including low-ESR MLCCs-by selecting one of three internal ramp amplitudes via the MODE pin resistor, without modifying feedback components.
How does the MODE pin configure multiple functions in TPS543620RPYR?
The MODE pin on the TPS543620RPYR serves a triple function: a resistor to AGND selects (1) PWM ramp amplitude (1/2/4 pF) for loop tuning, (2) soft-start duration (0.5/1/2/4 ms), and (3) current limit mode (6-A or 3-A). Each resistor value maps to a unique combination-for example, 1.78 kΩ enables 6-A mode with 0.5-ms soft start and 1-pF ramp-verified in TI's datasheet Table 7-2.
Can TPS543620RPYR be synchronized to an external clock, and what are the valid frequency ranges?
Yes, the TPS543620RPYR can synchronize to an external clock applied to the SYNC/FSEL pin. Valid input clock frequencies range from 400 kHz to 2600 kHz with 20–80% duty cycle. The device decodes the clock to match one of five internal frequencies (500/750/1000/1500/2200 kHz); if synchronization is lost, it defaults to the decoded internal frequency after four cycles.
What protection features are integrated into TPS543620RPYR?
The TPS543620RPYR integrates comprehensive protection: output overvoltage (120% VREF) and undervoltage (80% VREF), input undervoltage lockout (3.9–4.1 V with 150-mV hysteresis), cycle-by-cycle overcurrent (peak and sinking), and thermal shutdown (165–175°C with 12°C hysteresis). All protections trigger automatic hiccup-mode restart after a delay proportional to soft-start time.
TPS543620RPYR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SWIFT™
- Package/Case:
- 14-PowerVFQFN
- 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):
- 4V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 0.5V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 6A
- Frequency - Switching:
- 500kHz, 750kHz, 1MHz, 1.5MHz, 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-VQFN-HR (2.5x3)
TPS543620RPYR FAQ
1.How can I place an order for TPS543620RPYR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS543620RPYR 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 TPS543620RPYR reliable?
The price and inventory of TPS543620RPYR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS543620RPYR is usually 5 days.
3.What payment methods are accepted for TPS543620RPYR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS543620RPYR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS543620RPYR?
TPS543620RPYR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS543620RPYR 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 TPS543620RPYR?
For technical support, including TPS543620RPYR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS543620RPYR requirements.
6.How does Aetrix verify that TPS543620RPYR is sourced from the original manufacturer or authorized distributors?
All TPS543620RPYR 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 TPS543620RPYR meets industry standards.
7.What is the process for return or replacement of TPS543620RPYR?
All TPS543620RPYR units undergo pre-shipment inspection (PSI). If there is an issue with TPS543620RPYR, 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 TPS543620RPYR part is unused and in its original packaging.
Return procedure for TPS543620RPYR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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