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Texas Instruments TPS55162QPWPTQ1
- Part No.:
- TPS55162QPWPTQ1
- Manufacturer:
- Texas Instruments
- Package:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS55162QPWPTQ1.pdf
- Description:
- IC REG BUCK BST ADJ 1A 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,248
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Product details
Overview
TPS55162QPWPTQ1 from Texas Instruments is an automotive-grade, synchronous buck-boost DC-DC converter supporting 2-V to 36-V input and delivering adjustable 5.7-V to 9-V output at up to 0.8 A (VIN ≥ 3.8 V), with automatic step-down/step-up mode transition, 2-MHz fixed-frequency operation, and integrated power-good with configurable delay. It serves as a primary voltage regulator in start-stop automotive infotainment and gateway modules.
For engineers reviewing the TPS55162QPWPTQ1 datasheet, TPS55162QPWPTQ1 pinout, TPS55162QPWPTQ1 application, or TPS55162QPWPTQ1 equivalent, key selection considerations include its AEC-Q100 Grade 1 qualification (–40°C to +125°C), low-power mode quiescent current (<15 µA), VIN undervoltage lockout (2 V), and HTSSOP-20 PowerPAD™ thermal performance for high-reliability automotive power rails.
Technical Context
The TPS55162QPWPTQ1 implements a fixed-frequency, pulse-width-modulation (PWM) control architecture with synchronous rectification across both buck and boost power stages. Its overlap control logic enables seamless, loss-minimized transitions between step-down and step-up modes without external intervention.
It integrates dual bootstrap circuits (BST1/L1 for buck, BST2/L2 for boost), internal gate-drive supplies (VREG/VREG_Q), and analog feedback via VOS_FB with resistive divider configuration. The device supports IGN wake-up with hysteresis (0.76–1.35 V), programmable PG delay (0.5–40 ms via PG_DLY resistor), and overtemperature shutdown at 175–210°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.6 V to 36 V - Supports full automotive battery range including cold-crank (≥3.6 V startup) |
| Output Voltage Range | 5.7 V to 9 V - Adjustable via external resistor divider on VOS_FB pin |
| Max Output Current | 0.8 A at VIN ≥ 3.8 V - Sustains 5.7–9 V output under typical start-stop conditions |
| Switching Frequency | 2 MHz (fixed) - Enables compact 4.7-µH inductor and small ceramic capacitors |
| Quiescent Current | <15 µA in low-power mode - Meets OEM standby current requirements for ECU listen-to-CAN operation |
| Shutdown Current | <3 µA - Minimizes battery drain during vehicle off-state |
| Thermal Resistance | RθJA = 35.4 °C/W - Validated for HTSSOP-20 PowerPAD™ package with proper PCB copper pour |
Pinout & Package
TPS55162QPWPTQ1 is housed in a 20-pin HTSSOP PowerPAD™ package (6.50 mm × 4.40 mm) with exposed thermal pad soldered to PGND for optimal thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND (Pin 1) | Power ground | Main return path for high-current switching nodes (L1/L2); must connect to thermal pad |
| L1 (Pin 2) | Buck switch node | Connects to one end of buck inductor; drives high-side FET of buck stage |
| BST1 (Pin 3) | Buck bootstrap | Supplies gate drive for buck high-side FET; requires 100-nF capacitor to L1 |
| VINP / VINL (Pins 4/5) | Power inputs | VINP: main supply input; VINL: bias supply input - both connect to same battery rail |
| IGN (Pin 6) | Ignition enable | Wake-up trigger with 2.5–3.7 V threshold; supports power-latch via IGN_PWRL |
| VOS_FB (Pin 14) | Feedback input | Configures output voltage (5.7–9 V) via resistive divider; reference voltage = 0.8 V (±2%) |
| VOUT_SENSE (Pin 16) | Output sensing | Direct connection to VOUT for accurate regulation; decouples layout-sensitive feedback |
| PG (Pin 15) | Power-good output | Open-drain status signal; asserts low when VOUT deviates >5% from nominal |
Key Features
| Feature | Design Value |
|---|---|
| Automatic buck-boost mode transition | Eliminates external control logic; maintains regulation across VIN crossing VOUT without dropout |
| Configurable power-good delay | 0.5–40 ms via resistor on PG_DLY pin - prevents false PG assertion during soft-start or load transients |
| Low-power mode with <15 µA IQ | Enables extended ECU standby while preserving CAN bus monitoring capability |
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - suitable for under-hood and dashboard mounting |
| Integrated overvoltage and overtemperature protection | VOUT OV trip at 110–125% of setpoint; thermal shutdown at 175–210°C with 30°C hysteresis |
Applications
| Infotainment Power Supply | Body Control Module (BCM) |
|---|---|
Use Scenario: Powering display controllers and audio processors in vehicles with stop-start systems where battery voltage drops to 3.8 V during cranking. IC Role / Device Role / Timing Role: Primary buck-boost regulator maintaining stable 7-V rail from fluctuating 3.6–14-V input. Use Value: Delivers 0.8-A continuous output at VIN ≥ 3.8 V, ensuring uninterrupted operation during engine restart. | Use Scenario: Supplying microcontroller and sensor interfaces in gateway modules exposed to wide input transients (load dump, jump start). IC Role / Device Role / Timing Role: Input-tolerant DC-DC converter regulating 6.5-V rail from 2–36-V automotive battery. Use Value: Withstands 40-V absolute max input and includes OVLO (36–40 V) for robust transient immunity. |
| Solar-Battery Hybrid Charger | Li-ion Battery Pack Management |
Use Scenario: Converting variable solar panel output (e.g., 4–28 V) to fixed 8-V charging rail for 2S Li-ion stacks. IC Role / Device Role / Timing Role: Wide-input buck-boost controller enabling single-stage MPPT-adjacent regulation. Use Value: Adjustable 5.7–9-V output and 2-MHz switching allow compact magnetics and fast transient response to irradiance changes. | Use Scenario: Providing auxiliary 7-V supply for fuel gauge ICs and protection circuitry in portable automotive accessories. IC Role / Device Role / Timing Role: Efficient step-up/step-down regulator operating from partially discharged 2S Li-ion (5–8.4 V). Use Value: Maintains 0.4-A output down to VIN = 2.3 V - supports deep discharge operation without brownout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS55160QPWPTQ1 | Same package and pinout; supports spread-spectrum EMI reduction and identical 5.7–9-V adjustable output | Includes SS_EN pin for EMI control; otherwise functionally identical for most automotive designs | Select TPS55160QPWPTQ1 if radiated emissions compliance (CISPR 25 Class 5) is required |
| LM61480QRPWRQ1 | 3.5-V to 36-V input, 1-A sync buck only; no step-up capability; 2.1-MHz fixed frequency | Lacks buck-boost topology - cannot regulate when VIN < VOUT; requires separate boost stage for wide-input apps | Choose LM61480QRPWRQ1 only for pure step-down use cases with VIN always > VOUT |
Compared with TPS55162QPWPTQ1, TPS55160QPWPTQ1 adds spread-spectrum operation without changing footprint or regulation behavior, while LM61480QRPWRQ1 offers higher current but sacrifices step-up functionality - making it unsuitable for battery-cranking or solar-battery hybrid applications requiring VIN < VOUT support.
Availability
TPS55162QPWPTQ1 is available at Aetrix Electronics and suitable for automotive infotainment systems, body electronics gateways, and industrial solar-battery hybrid chargers requiring stable component supply across extended temperature and lifecycle demands.
Supply support for TPS55162QPWPTQ1 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 TPS5516x-Q1 product line was designed specifically for automotive start-stop and battery-cranking environments, delivering reliable buck-boost regulation across extreme input voltage ranges without external mode-control logic.
FAQ
What is the minimum input voltage required for TPS55162QPWPTQ1 to start up?
The TPS55162QPWPTQ1 requires a minimum input voltage of 5.3 V at VINP/VINL to initiate startup under typical conditions (TJ = 25°C, IOUT < 400 mA, COUT = 22 µF). This ensures sufficient headroom for internal bias generation before regulation begins. Below this threshold, the device remains in shutdown until VIN rises above the UVLO release point of 2 V.
How is the output voltage set on TPS55162QPWPTQ1?
The TPS55162QPWPTQ1 uses an external resistive divider connected between VOUT, VOS_FB, and GND to set the output voltage from 5.7 V to 9 V. The internal reference at VOS_FB is 0.8 V (±2%), so R1/R2 ratio determines VOUT = 0.8 × (1 + R1/R2). Total divider resistance must remain below 1 MΩ to minimize leakage error and noise susceptibility.
Does TPS55162QPWPTQ1 support spread-spectrum frequency modulation?
No, TPS55162QPWPTQ1 does not support spread-spectrum operation. That feature is exclusive to TPS55160QPWPTQ1 and TPS55165QPWPTQ1, which have dedicated SS_EN pin functionality. On TPS55162QPWPTQ1, SS_EN is not implemented - tying it low or leaving it floating has no effect on switching frequency behavior.
What thermal design guidance applies to TPS55162QPWPTQ1 in HTSSOP-20 PowerPAD™ package?
For TPS55162QPWPTQ1, the exposed thermal pad must be soldered to a minimum 100-mm² copper pour connected to PGND to achieve the specified RθJA of 35.4 °C/W. TI recommends 4–6 thermal vias (0.3-mm diameter) under the pad, filled and plated, connecting to inner-layer ground planes. Without proper thermal relief, junction temperature may exceed 150°C at full load and high ambient.
Can TPS55162QPWPTQ1 operate with input voltage lower than its output voltage setting?
Yes, TPS55162QPWPTQ1 automatically transitions into step-up mode when VIN falls below the regulated VOUT level (e.g., 7 V), maintaining regulation down to VIN = 2.3 V at reduced output current (0.4 A). This seamless buck-to-boost crossover is handled internally without mode pins or external control, enabling robust operation during automotive cranking events.
TPS55162QPWPTQ1 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-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck-Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 5.7V
- Voltage - Output (Max):
- 9V
- Current - Output:
- 1A
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-HTSSOP
TPS55162QPWPTQ1 FAQ
1.How can I place an order for TPS55162QPWPTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS55162QPWPTQ1 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 TPS55162QPWPTQ1 reliable?
The price and inventory of TPS55162QPWPTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS55162QPWPTQ1 is usually 5 days.
3.What payment methods are accepted for TPS55162QPWPTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS55162QPWPTQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS55162QPWPTQ1?
TPS55162QPWPTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS55162QPWPTQ1 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 TPS55162QPWPTQ1?
For technical support, including TPS55162QPWPTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS55162QPWPTQ1 requirements.
6.How does Aetrix verify that TPS55162QPWPTQ1 is sourced from the original manufacturer or authorized distributors?
All TPS55162QPWPTQ1 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 TPS55162QPWPTQ1 meets industry standards.
7.What is the process for return or replacement of TPS55162QPWPTQ1?
All TPS55162QPWPTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS55162QPWPTQ1, 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 TPS55162QPWPTQ1 part is unused and in its original packaging.
Return procedure for TPS55162QPWPTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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