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Texas Instruments TPS54362BQPWPRQ1
- Part No.:
- TPS54362BQPWPRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS54362BQPWPRQ1.pdf
- Description:
- IC REG BUCK ADJ 3A 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,817
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Product details
Overview
TPS54362BQPWPRQ1 from Texas Instruments is an automotive-grade 3-A, 60-V synchronous step-down DC-DC converter with voltage-mode control, programmable overvoltage/undervoltage supervision, and low-power mode (65 μA quiescent current). It integrates a high-side MOSFET, supports external frequency programming (200 kHz–2.2 MHz), and delivers regulated output from 0.9 V to 18 V in HTSSOP-20 package. Used in automotive telematics and navigation systems requiring robust transient immunity and precise power-on reset.
For engineers reviewing the TPS54362BQPWPRQ1 datasheet, TPS54362BQPWPRQ1 pinout, TPS54362BQPWPRQ1 application, or TPS54362BQPWPRQ1 equivalent, key selection considerations include its AEC-Q100 Grade 1 qualification (–40°C to 125°C ambient), 65 μA light-load quiescent current, programmable reset delay via Cdly capacitor, slew-rate control via Rslew resistor, and 0.8 V ±1.5% internal reference for precision feedback.
Technical Context
The TPS54362BQPWPRQ1 implements voltage-mode control with input-voltage feed-forward to improve line transient response. Its cycle-by-cycle current limit and thermal shutdown protect against overload and excessive junction temperature (175°C trip point).
It features dual supervisor inputs-RST_TH for undervoltage detection and OV_TH for overvoltage monitoring-both referenced to the same 0.8 V internal comparator threshold. Reset assertion includes a programmable delay (via Cdly) and fast negative-transient filtering (20 μs typical), while soft-start is controlled by an external capacitor on SS pin sourcing 50 μA typical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 3 A maximum continuous load capability with integrated high-side FET (rDS(on) = 500 mΩ typical) |
| Input Voltage Range | 3.6 V to 48 V operating; withstands transients up to 60 V without damage |
| Quiescent Current | 65 μA typical in low-power mode (PFM), enabling battery-powered automotive applications |
| Reference Voltage | 0.8 V ±1.5% internal bandgap reference, enabling precise output regulation from 0.9 V to 18 V |
| Switching Frequency | 200 kHz to 2.2 MHz, set externally via RT resistor or synchronized via SYNC pin (up to 1.1 MHz) |
| Reset Delay Accuracy | Programmable POR delay of ~1 ms per nF on Cdly pin, with 20 μs glitch filter on RST output |
| Thermal Protection | Thermal shutdown at 175°C junction temperature with 30°C hysteresis for reliable recovery |
Pinout & Package
TPS54362BQPWPRQ1 is housed in a thermally enhanced 20-pin HTSSOP (PWP) package with exposed PowerPAD™ ground pad (6.50 mm × 4.40 mm body size), optimized for automotive PCB layouts requiring high thermal dissipation (RθJA = 43.8°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BOOT | Bootstrap supply | Drives gate of internal high-side FET; requires external capacitor between BOOT and PH |
| Cdly | Reset delay timing | Capacitor-to-ground sets power-on-reset delay (~1 ms/nF); enables precise system sequencing |
| COMP | Error amplifier output | Connects external RC network for loop compensation; determines stability and transient response |
| EN | Enable control | Active-high digital input; internal pull-up allows direct connection to VIN for always-on operation |
| GND | Power and signal ground | Common return path; connects to exposed thermal pad for optimal heat transfer |
| LPM | Low-power mode select | Digital input enabling PFM operation; internal 62 kΩ pulldown ensures default LPM disable |
| OV_TH | Overvoltage sense | Monitors V(VReg) via resistor divider; triggers internal switch OFF if output exceeds programmed threshold |
| PH | Switch node | Source of internal high-side FET; connects to external inductor and bootstrap capacitor |
| RST | Open-drain reset output | Asserts low when V(VReg) falls below RST_TH threshold; requires external pull-up for logic-level interface |
| RST_TH | Reset threshold sense | Monitors V(VReg) via resistor divider; sets undervoltage detection point for RST assertion |
| RT | Oscillator frequency set | Resistor-to-ground programs switching frequency from 200 kHz to 2.2 MHz |
| Rslew | Slew rate control | Resistor-to-ground adjusts gate drive strength to reduce EMI and optimize efficiency vs. noise trade-off |
| SS | Soft-start control | Capacitor-to-ground sets output ramp time; internal 50 μA current source enables predictable startup |
| SYNC | External clock input | Accepts external clock (180 kHz–2.2 MHz) to synchronize multiple converters and reduce beat frequencies |
| VIN | Main power input | Unregulated input (3.6–48 V); pins 18 and 19 must be shorted externally for proper current sharing |
| VReg | Regulated output | Provides 0.9–18 V output; internal 100 Ω load activates during startup and overvoltage events |
| VSENSE | Feedback input | Inverting input of error amplifier; compares divided V(VReg) against 0.8 V reference for regulation |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 (–40°C to 125°C ambient), HBM ESD Level 2, CDM Level C5 |
| Low-power operation | 65 μA quiescent current in pulse-skip mode enables >1-year battery life in always-on telematics |
| Programmable supervision | Independent RST_TH and OV_TH inputs allow separate undervoltage reset and overvoltage shutdown thresholds |
| EMI optimization | Rslew pin enables adjustable switching edge rate to meet CISPR 25 Class 5 radiated emissions limits |
| Robust start-up | VReg internal load ensures reliable bootstrap capacitor charging even under no-load or light-load conditions |
| Thermal reliability | Integrated thermal shutdown with 30°C hysteresis prevents latch-up and enables safe auto-recovery |
Applications
| Automotive Telematics | Navigation Systems |
|---|---|
|
Use Scenario: Powering GPS/GNSS receivers, cellular modems, and CAN controllers in vehicle infotainment modules. IC Role / Device Role / Timing Role: Primary buck regulator delivering stable 3.3 V or 5 V rail; provides programmable reset for MCU boot sequencing. Use Value: Withstands 60 V load-dump transients and maintains regulation during cold-crank (3.6 V input), ensuring uninterrupted positioning and connectivity. |
Use Scenario: Supplying display controllers, touch processors, and memory in in-dash navigation units. IC Role / Device Role / Timing Role: Main power converter with soft-start and reset supervision to coordinate multi-rail power-up sequence. Use Value: 65 μA quiescent current extends battery backup runtime during ignition-off; Cdly-programmed reset delay prevents premature MCU wake-up. |
| In-Dash Instrumentation | Battery-Powered Test Equipment |
|
Use Scenario: Powering digital clusters with TFT displays, microcontrollers, and sensor interfaces in instrument panels. IC Role / Device Role / Timing Role: High-efficiency DC-DC stage converting 12 V battery to 5 V/3.3 V rails; monitors output for fault-triggered dashboard warnings. Use Value: OV_TH and RST_TH supervision enable real-time output health monitoring and fail-safe shutdown before display corruption occurs. |
Use Scenario: Providing regulated power to portable diagnostic tools used in service bays and field maintenance. IC Role / Device Role / Timing Role: Primary regulator supporting wide-input operation (3.6–48 V) across 12 V and 24 V vehicle platforms. Use Value: Input range and AEC-Q100 qualification ensure consistent performance across diverse automotive test environments without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5164QPWPRQ1 | 42 V max input, 0.5 A output, constant-on-time control; lacks integrated reset supervision and Cdly delay | Lower current, no built-in reset function; requires external supervisor IC for POR sequencing | Choose for cost-sensitive, lower-current applications where external reset logic is acceptable |
| TPS54560QPWPRQ1 | 60 V input, 5 A output, same pinout family but higher current; no Cdly pin or programmable reset delay | Higher output capability but no dedicated reset timing capacitor; uses fixed 10-ms POR delay | Choose when >3 A load is required and fixed reset timing suffices for system architecture |
Compared with LM5164QPWPRQ1 and TPS54560QPWPRQ1, the TPS54362BQPWPRQ1 uniquely combines 3-A capability, programmable reset delay (Cdly), and dual-threshold supervision (RST_TH/OV_TH) in a single AEC-Q100-compliant package-enabling simplified, space-efficient power management for safety-critical automotive subsystems.
Availability
TPS54362BQPWPRQ1 is available at Aetrix Electronics and suitable for automotive telematics, navigation systems, and in-dash instrumentation requiring stable component supply with full AEC-Q100 traceability and long-term production support.
Supply support for TPS54362BQPWPRQ1 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 and embedded processing technologies, with deep expertise in automotive power management ICs and functional-safety design.
The TPS54362x-Q1 product line delivers high-voltage, low-quiescent-current DC-DC converters engineered specifically for automotive infotainment, telematics, and body electronics demanding AEC-Q100 compliance and robust transient immunity.
FAQ
What is the maximum input voltage rating for the TPS54362BQPWPRQ1?
The TPS54362BQPWPRQ1 has an absolute maximum input voltage rating of 60 V on the VIN pin, allowing it to safely withstand automotive load-dump transients. Its recommended operating input range is 3.6 V to 48 V, making it suitable for both 12 V and 24 V vehicle electrical systems. Operation above 48 V requires careful thermal design due to increased power dissipation.
How does the Cdly pin affect reset timing in the TPS54362BQPWPRQ1?
The Cdly pin on the TPS54362BQPWPRQ1 accepts an external capacitor to ground that programs the power-on-reset (POR) delay. The device charges this capacitor with a 1.4–2.6 μA current, resulting in approximately 1 ms of delay per nanofarad. This enables precise control over system boot sequencing-critical for coordinating microcontroller initialization with peripheral power rails in automotive applications.
Can the TPS54362BQPWPRQ1 operate in synchronization with other converters?
Yes, the TPS54362BQPWPRQ1 supports external clock synchronization via the SYNC pin. It accepts an external clock signal between 180 kHz and 2.2 MHz, provided the external frequency is within 2× the internally programmed switching frequency (set by RT). This feature reduces beat frequencies and EMI in multi-rail automotive power systems, improving EMC compliance without requiring layout changes.
What is the purpose of the Rslew pin on the TPS54362BQPWPRQ1?
The Rslew pin on the TPS54362BQPWPRQ1 controls the slew rate of the internal high-side MOSFET's gate drive. By connecting an external resistor (typically 10 kΩ to 50 kΩ) from Rslew to GND, designers adjust switching edge speed to balance EMI reduction against conduction losses. Lower resistance increases slew rate (faster edges, higher EMI); higher resistance slows edges (lower EMI, slightly reduced efficiency).
Does the TPS54362BQPWPRQ1 provide overvoltage protection independent of reset signaling?
Yes-the TPS54362BQPWPRQ1 uses the OV_TH pin to monitor output voltage for overvoltage conditions independently of the RST_TH pin. When the divided V(VReg) exceeds the 0.8 V internal comparator threshold at OV_TH, the device immediately disables the internal switch to prevent output overvoltage, regardless of RST state. This provides hardware-level protection that does not rely on reset assertion or MCU intervention.
TPS54362BQPWPRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- 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):
- 3.6V
- Voltage - Input (Max):
- 48V
- Voltage - Output (Min/Fixed):
- 0.9V
- Voltage - Output (Max):
- 18V
- Current - Output:
- 3A
- Frequency - Switching:
- 200kHz ~ 2.2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-HTSSOP
TPS54362BQPWPRQ1 FAQ
1.How can I place an order for TPS54362BQPWPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54362BQPWPRQ1 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 TPS54362BQPWPRQ1 reliable?
The price and inventory of TPS54362BQPWPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54362BQPWPRQ1 is usually 5 days.
3.What payment methods are accepted for TPS54362BQPWPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54362BQPWPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54362BQPWPRQ1?
TPS54362BQPWPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54362BQPWPRQ1 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 TPS54362BQPWPRQ1?
For technical support, including TPS54362BQPWPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54362BQPWPRQ1 requirements.
6.How does Aetrix verify that TPS54362BQPWPRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS54362BQPWPRQ1 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 TPS54362BQPWPRQ1 meets industry standards.
7.What is the process for return or replacement of TPS54362BQPWPRQ1?
All TPS54362BQPWPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS54362BQPWPRQ1, 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 TPS54362BQPWPRQ1 part is unused and in its original packaging.
Return procedure for TPS54362BQPWPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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