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Texas Instruments TPS6565342RHDRQ1
- Part No.:
- TPS6565342RHDRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Special Purpose Regulators
- Package:
- 28-VFQFN Exposed Pad
- Datasheet:
-
TPS6565342RHDRQ1.pdf
- Description:
- IC PWR MGMT SWITCHING REGULATOR
- Quantity:
- Payment:
- Shipping:
Inventory:2,585
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Product details
Overview
TPS6565342RHDRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive dual 3 A buck converter IC with programmable 1 V–3.36 V outputs, 4 MHz switching frequency, and I²C-controlled slew rate (0.47–10 mV/µs). It delivers tightly regulated power to radar ECU and camera module point-of-load rails under 2.8 V–5.5 V input.
For engineers reviewing the TPS6565342RHDRQ1 datasheet, TPS6565342RHDRQ1 pinout, TPS6565342RHDRQ1 application, or TPS6565342RHDRQ1 equivalent, this page provides verified electrical specs, validated pin functions, confirmed automotive-grade thermal behavior (−40°C to +125°C), and real-world EMI-reduction features including spread-spectrum mode and phase interleaving.
Technical Context
The TPS6565342RHDRQ1 integrates two independent synchronous buck regulators with current-mode control, programmable ILIM FWD (1.5–4 A) and ILIM NEG (1.6–3.0 A), and automatic PWM/PFM transition at ~290 mA (PWM→PFM) and ~550 mA (PFM→PWM). Each regulator supports remote sensing via FB_B0/FB_B1 pins for ±2% DC output accuracy.
Its digital subsystem includes a 3.4 MHz I²C interface with hardware-level interrupt masking on nINT, configurable GPO/GPO2 outputs, and external clock synchronization via CLKIN (1–24 MHz). Thermal protection triggers warning at 115–135°C and shutdown at 140–160°C with 20°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.8 V to 5.5 V - supports direct connection to automotive battery rail with UVLO (2.51–2.75 V) and OVP (5.6–6.1 V) protection |
| Output Voltage Range | 1.0 V to 3.36 V in 5 mV steps (≤1.4 V) or 20 mV steps (>1.4 V) - enables precise core voltage scaling for SoCs and image sensors |
| Max Output Current | 3 A per channel - sustained delivery with RDS(ON) HS FET ≤110 mΩ and LS FET ≤90 mΩ ensures <150 mW conduction loss at full load |
| Switching Frequency | 3.6–4.4 MHz (typ. 4 MHz) - enables use of compact 0.47 µH inductors and reduces output ripple to ≤4 mVp-p in PWM mode |
| Slew Rate Control | 0.47–10 mV/µs (7 programmable settings) - limits inrush current during startup and voltage transitions to prevent system brownouts |
| I²C Interface Speed | Up to 3.4 MHz high-speed mode - allows rapid configuration of registers and real-time load current monitoring (50 µs measurement time) |
| Thermal Rating | AEC-Q100 Grade 1 (−40°C to +125°C ambient) - qualified for under-hood and display ECU environments with RθJA = 36.7°C/W |
Pinout & Package
TPS6565342RHDRQ1 uses a 28-pin, 5.0 mm × 5.0 mm VQFN package with wettable flanks and exposed thermal pad connected to PCB ground plane via multiple vias for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB_B0 / FB_B1 | Feedback input (analog) | Remote sense inputs for Buck 0 and Buck 1 - enable IR-drop compensation at point-of-load for ±2% output accuracy |
| VIN_B0 / VIN_B1 | Power input (buck-specific) | Independent input pins per buck channel - must be externally tied together and locally bypassed with ≥1.9 µF ceramic capacitance |
| SW_B0 / SW_B1 | Switch node (power) | High-frequency switching nodes - require low-ESR ceramic capacitors and tight layout to minimize EMI and ringing |
| PGND_B0 / PGND_B1 | Power ground (buck-specific) | Dedicated ground returns for each buck - separate from AGND/SGND to isolate high-current return paths |
| EN | Enable input (digital) | Active-high logic input controlling both buck regulators and GPOs - floating = enabled; grounded = disabled |
| nINT | Interrupt output (open-drain) | Active-low signal indicating PGOOD fault, thermal warning, or overcurrent - requires external pullup resistor |
| SCL / SDA | I²C interface (bidirectional) | Support standard (100 kHz), fast (400 kHz), fast+ (1 MHz), and high-speed (3.4 MHz) modes - pullup resistors required |
| GPO / CLKIN (GPO2) | Configurable digital output | GPO is dedicated push-pull/open-drain output; CLKIN doubles as GPO2 when external clock not used - both programmable |
| PGOOD | Power-good indicator (digital) | Programmable open-drain/push-pull output signaling valid output voltage - deglitch time 4–15 µs, gating delay 800 µs |
Key Features
| Feature | Design Value |
|---|---|
| Spread-spectrum & phase interleaving | Reduces peak radiated emissions by spreading energy across frequency band and offsetting buck switching phases |
| Programmable soft-start slew rate | Seven discrete settings (0.47–10 mV/µs) prevent overshoot and limit inrush current during power-up and dynamic voltage scaling |
| Integrated load current sensing | On-chip ADC measures buck output current with <10% error above 1 A - enables real-time telemetry without external shunt resistors |
| External clock synchronization | Accepts 1–24 MHz external reference on CLKIN pin - eliminates beat frequencies and simplifies EMI filtering in multi-rail systems |
| Automotive-grade protection suite | Includes overtemperature warning/shutdown, short-circuit detection (280–440 mV threshold), and bidirectional current limiting (ILIM FWD/NEG) |
Applications
| Radar System ECU | Automotive Camera Module |
|---|---|
Use Scenario: Supplies clean, low-noise 1.2 V and 2.8 V rails to MMIC transceivers and ADCs in 77 GHz radar front-ends. IC Role / Device Role / Timing Role: Dual-buck regulator providing independently controlled, synchronized power domains with <60 mV transient response to 3 A load steps. Use Value: Spread-spectrum mode and phase interleaving suppress switching noise near radar IF bands, preserving SNR and angular resolution. | Use Scenario: Powers image sensor (1.8 V), ISP core (1.1 V), and interface logic (3.3 V) in rear-view and surround-view cameras. IC Role / Device Role / Timing Role: Dual-output PMIC delivering sequenced, slew-rate-controlled voltages with remote sensing to compensate trace IR drop. Use Value: Programmable startup delays and GPO synchronization ensure correct power-up order, eliminating sensor initialization faults. |
| Automotive Head Unit | Automotive Display ECU |
Use Scenario: Generates 1.0 V CPU core, 1.8 V memory, and 3.3 V I/O rails for infotainment SoCs in head units with strict thermal constraints. IC Role / Device Role / Timing Role: High-efficiency dual buck managing dynamic load transients while maintaining junction temperature below 140°C. Use Value: AUTO mode (PFM/PWM) achieves >90% efficiency at light loads and >85% at full 3 A, reducing heatsink requirements. | Use Scenario: Delivers stable 1.2 V GPU, 1.8 V DDR, and 5.0 V backlight bias in TFT-LCD instrument clusters operating at −40°C to +125°C. IC Role / Device Role / Timing Role: AEC-Q100 Grade 1 power manager with thermal warning (115–135°C) and shutdown (140–160°C) for safety-critical displays. Use Value: Overvoltage (±50 mV) and undervoltage (±40 mV) monitoring on PGOOD ensures display remains powered only within safe voltage margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS6565312RHDRQ1 | Same die, fixed 1.2 V / 2.8 V outputs (non-programmable); identical pinout and thermal performance | Limited to pre-defined dual-rail configurations - no I²C voltage adjustment or slew-rate tuning | Select when fixed outputs simplify design validation and reduce firmware overhead |
| MPQ4436-AEC1 | Single 3 A buck with 2.5–5.5 V input; no I²C, no slew control, no GPOs; smaller 3×3 mm QFN | Requires two devices for dual-rail operation; lacks remote sensing and programmable sequencing | Select for cost-sensitive, space-constrained single-rail applications where feature set can be reduced |
Compared with TPS6565342RHDRQ1, TPS6565312RHDRQ1 offers identical reliability and layout compatibility but sacrifices programmability, while MPQ4436-AEC1 reduces integration at the cost of increased BOM count and loss of closed-loop control features.
Availability
TPS6565342RHDRQ1 is available at Aetrix Electronics and suitable for radar system ECU, automotive camera module, and automotive display applications requiring stable component supply, AEC-Q100 compliance, and long-term automotive lifecycle support.
Supply support for TPS6565342RHDRQ1 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 power management ICs.
The TPS65653-Q1 product line delivers high-precision, low-noise dual-buck regulation for radar, ADAS camera, and display ECUs - designed specifically to meet stringent automotive EMI, thermal, and functional safety requirements.
FAQ
What is the maximum output current per channel for the TPS6565342RHDRQ1?
The TPS6565342RHDRQ1 delivers up to 3 A continuous output current per buck channel (Buck 0 and Buck 1). This rating is supported by internal high-side and low-side FETs with RDS(ON) ≤110 mΩ and ≤90 mΩ respectively, and thermal design validated to 140°C junction temperature under AEC-Q100 Grade 1 conditions. The actual achievable current depends on PCB layout, ambient temperature, and input/output voltage differential.
Does the TPS6565342RHDRQ1 support remote voltage sensing?
Yes, the TPS6565342RHDRQ1 supports remote voltage sensing via dedicated FB_B0 and FB_B1 pins. These inputs connect directly to the point-of-load to compensate for IR drop across PCB traces, enabling ±2% DC output voltage accuracy even with significant trace resistance. This capability is essential for powering noise-sensitive radar MMICs and high-resolution image sensors.
How does the TPS6565342RHDRQ1 handle electromagnetic interference (EMI)?
The TPS6565342RHDRQ1 reduces EMI through three integrated techniques: spread-spectrum modulation to lower peak radiated emissions, phase interleaving between Buck 0 and Buck 1 to cancel magnetic fields, and optional external clock synchronization via CLKIN to eliminate beat frequencies. These features are validated in automotive radar and camera applications where switching noise must avoid critical RF bands.
Can the TPS6565342RHDRQ1 operate with only one buck converter enabled?
Yes, the TPS6565342RHDRQ1 allows independent enable/disable control of Buck 0 and Buck 1 via I²C registers. When one buck is disabled, its SW_Bx and PGND_Bx pins may be left floating per datasheet guidance, and quiescent current drops to 58 µA (one buck active) or 9 µA (both disabled). This flexibility supports partial-power modes in automotive ECUs.
What protection features are built into the TPS6565342RHDRQ1?
The TPS6565342RHDRQ1 includes overtemperature warning (115–135°C) and shutdown (140–160°C), input overvoltage (5.6–6.1 V) and undervoltage lockout (2.51–2.75 V), output overvoltage (±50 mV) and undervoltage (±40 mV) monitoring, short-circuit detection (280–440 mV), and programmable forward/negative current limiting (ILIM FWD: 1.5–4 A; ILIM NEG: 1.6–3.0 A).
TPS6565342RHDRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- -
- Voltage - Input:
- 2.8V ~ 5.5V
- Number of Outputs:
- 2
- Voltage - Output:
- 1V ~ 3.36V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-VQFN (5x5)
TPS6565342RHDRQ1 FAQ
1.How can I place an order for TPS6565342RHDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS6565342RHDRQ1 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 TPS6565342RHDRQ1 reliable?
The price and inventory of TPS6565342RHDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS6565342RHDRQ1 is usually 5 days.
3.What payment methods are accepted for TPS6565342RHDRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS6565342RHDRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS6565342RHDRQ1?
TPS6565342RHDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS6565342RHDRQ1 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 TPS6565342RHDRQ1?
For technical support, including TPS6565342RHDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS6565342RHDRQ1 requirements.
6.How does Aetrix verify that TPS6565342RHDRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS6565342RHDRQ1 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 TPS6565342RHDRQ1 meets industry standards.
7.What is the process for return or replacement of TPS6565342RHDRQ1?
All TPS6565342RHDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS6565342RHDRQ1, 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 TPS6565342RHDRQ1 part is unused and in its original packaging.
Return procedure for TPS6565342RHDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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