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Texas Instruments O919A14ETRGZTQ1
- Part No.:
- O919A14ETRGZTQ1
- Manufacturer:
- Texas Instruments
- Category:
- Power Management - Specialized
- Package:
- -
- Datasheet:
-
O919A14ETRGZTQ1.pdf
- Description:
- TPS65919-Q1 - AUTOMOTIVE 3.15V T
- Quantity:
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Inventory:2,000
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Product details
Overview
TPS65919-Q1 from Texas Instruments is an AEC-Q100 Grade 2 automotive power management unit (PMU) integrating four step-down SMPS regulators (two 3.5-A, one 3-A, one 1.5-A), four LDOs (300-mA, 300-mA, 100-mA, 200-mA), a 12-bit sigma-delta GPADC with 8 channels, thermal monitoring, and OTP-configurable power sequencing - designed for processor core, memory, and I/O rail supply in ADAS and digital cluster systems.
For engineers reviewing the TPS65919-Q1 datasheet, TPS65919-Q1 pinout, TPS65919-Q1 application, or TPS65919-Q1 equivalent, key selection considerations include dual-phase SMPS capability (7-A combined), differential remote sensing on 3.5-A rails, dynamic voltage scaling (DVS) support via SPI/I²C, 20-μA off-mode current, and automotive-grade thermal shutdown at 150°C junction temperature.
Technical Context
The TPS65919-Q1 implements a hierarchical power architecture: four independent buck converters operate at 2.2 MHz (internally synchronized or externally programmable 1.7–2.7 MHz), with two capable of dual-phase interleaving for reduced ripple and higher current delivery. Each SMPS includes hardware/software Eco-mode™, short-circuit protection, and power-good indication with voltage and overcurrent detection.
Power sequencing is controlled by factory-programmed OTP memory supporting configurable startup/shutdown sequences between ACTIVE, SLEEP, and OFF states; three digital outputs can be embedded in the sequence. The integrated 12-bit GPADC monitors two external voltages plus internal supplies, die temperature, and output currents - feeding real-time health data to the host processor via interrupt-driven event handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Temp Range | –40°C to +105°C ambient (AEC-Q100 Grade 2 qualified) |
| SMPS Output Current | Two 3.5-A rails (dual-phase capable → 7-A total), one 3-A, one 1.5-A |
| LDO Output Current | Two 300-mA (bypass mode supported), one 100-mA (low-noise ≤50 mA), one 200-mA |
| Quiescent Current | 20 μA in Off mode; 90 μA in Sleep mode with two SMPS active |
| ADC Resolution | 12-bit sigma-delta GPADC with 8 input channels (2 external, 6 internal) |
| Control Interfaces | SPI + two I²C ports (one dedicated to DVS, one general-purpose) |
| Package | VQFN-48, 7.0 mm × 7.0 mm, 0.5-mm pitch, exposed thermal pad |
Pinout & Package
VQFN-48 package with 7.0 mm × 7.0 mm body, 0.5-mm pitch, and exposed thermal pad (PGND) for enhanced thermal dissipation in automotive under-hood environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SMPS1_IN / SMPS2_IN / SMPS3_IN / SMPS4_IN | Input supply for respective buck regulators | Accept system input 3.135–5.25 V; shared or independent sourcing possible |
| SMPS1_FDBK / SMPS2_FDBK | Differential feedback inputs (dual-phase) | Enable remote sensing across load for ±1% output regulation accuracy |
| GPIO_3 | Multi-function pin (SYNCDCDC, ENABLE2, REGEN1) | Configurable as external clock sync input for EMI reduction across multiple PMUs |
| INT | Maskable interrupt output | Signals thermal warning, short-circuit, ADC threshold breach, or watchdog timeout |
| POWERGOOD (GPIO_6 secondary) | System-level power status indicator | Open-drain output asserting high when all regulated outputs meet tolerance |
Key Features
| Feature | Design Value |
|---|---|
| Dual-phase SMPS configuration | Combines two 3.5-A buck stages into single 7-A rail with interleaved switching to halve input/output ripple |
| OTP-based power sequencing | Factory-programmed startup/shutdown order eliminates boot firmware dependency; supports SLEEP↔ACTIVE transitions |
| DVS control via SPI/I²C | Real-time voltage scaling of processor core and memory rails using dedicated DVS interface for low-latency response |
| Thermal shutdown & warning | Hardware-triggered shutdown at 150°C junction; programmable high-temp warning interrupt at user-defined threshold |
| GPADC with external monitoring | Two dedicated analog inputs (ADCIN1/ADCIN2) enable direct measurement of battery voltage, sensor supply, or board temp |
Applications
| Automotive Digital Cluster | ADAS Camera Module |
|---|---|
Use Scenario: High-resolution TFT display with graphics processor, memory, and touch controller requiring sequenced, low-noise, and dynamically scalable power rails. IC Role / Device Role / Timing Role: Central PMU supplying core (SMPS1/2), memory (SMPS3), I/O (SMPS4), and low-noise analog (LDOVANA) domains with synchronized startup and DVS coordination. Use Value: Enables rapid boot (<500 ms), reduces EMI via clock synchronization, and extends display subsystem lifetime through thermal-aware throttling. |
Use Scenario: Front-facing stereo camera module with image signal processor (ISP), MIPI interface, and auto-focus actuator demanding stable, low-ripple, and fault-monitored power. IC Role / Device Role / Timing Role: Provides isolated 1.2-V core, 1.8-V I/O, 2.8-V sensor bias, and 3.3-V MIPI supply with short-circuit protection and real-time current monitoring per rail. Use Value: Prevents field failures via immediate short-circuit shutdown and enables predictive maintenance using GPADC-measured supply degradation trends. |
| Automotive Navigation System | In-Vehicle Infotainment (IVI) Head Unit |
Use Scenario: GPS/GNSS receiver, cellular modem, and audio DSP co-located on single PCB with strict thermal and noise constraints. IC Role / Device Role / Timing Role: Delivers clean 1.1-V core, 1.8-V memory, 3.3-V RF interface, and 5-V USB peripheral power using LDOs with bypass mode and SMPS with Eco-mode™. Use Value: Achieves <20 μVRMS output noise on LDOVANA rail for GNSS RF section while maintaining 90 μA sleep current for always-on location tracking. |
Use Scenario: Multi-core application processor platform with DDR3/DDR4 memory, HDMI, and Bluetooth/WiFi connectivity requiring robust, configurable, and diagnostics-rich power delivery. IC Role / Device Role / Timing Role: Manages full power tree including processor cores (dual-phase SMPS), DDR termination (3.3-V LDO), HDMI PHY (1.2-V LDO), and USB OTG (5-V boost via external circuit). Use Value: Supports ASIL-B compliance via OTP integrity check, thermal shutdown, and interrupt-driven fault reporting to safety monitor MCU. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PMU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65917-Q1 | Three 3-A SMPS (no dual-phase), no GPADC, smaller 6-mm × 6-mm VQFN-40 package | Lower-cost entry-level ADAS domain controller without external voltage monitoring needs | Select when system requires only basic sequencing and lacks thermal/supply telemetry requirements |
| MAX20029ATG/V+T | Three 3-A SMPS, integrated 8-channel 10-bit SAR ADC, different I²C register map and OTP model | Compatible with simpler GUI-based configuration tools; lower resolution ADC limits precision monitoring | Choose for cost-sensitive infotainment head units where 10-bit ADC suffices and TI ecosystem integration is not required |
Compared with TPS65919-Q1, TPS65917-Q1 omits dual-phase capability and GPADC but reduces BOM count and footprint; MAX20029ATG/V+T offers comparable SMPS count and ADC functionality but with lower resolution and non-TI register compatibility - making TPS65919-Q1 optimal for high-fidelity thermal and supply health monitoring in safety-critical ADAS nodes.
Availability
TPS65919-Q1 is available at Aetrix Electronics and suitable for automotive digital cluster, ADAS camera modules, and navigation systems requiring stable component supply with AEC-Q100 qualification and long-term production support.
Supply support for TPS65919-Q1 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, industrial, and power management solutions.
The TPS65919-Q1 belongs to TI's automotive-grade PMU product line, engineered specifically for next-generation ADAS and digital cockpit processors requiring high-current, low-noise, and fault-resilient multi-rail power delivery with integrated health monitoring.
FAQ
What is the maximum output current capability of the TPS65919-Q1's SMPS regulators?
The TPS65919-Q1 integrates four step-down SMPS regulators: two rated for 3.5 A each (configurable in dual-phase mode for up to 7-A combined output), one rated for 3 A, and one rated for 1.5 A. All support dynamic voltage scaling and hardware/software Eco-mode™ for efficiency optimization across load conditions. The TPS65919-Q1 datasheet specifies peak current limits and thermal derating curves per regulator under defined PCB layout and ambient conditions.
Does the TPS65919-Q1 support external clock synchronization for EMI reduction?
Yes, the TPS65919-Q1 supports external clock synchronization via the GPIO_3 pin configured as SYNCDCDC input. This allows multiple TPS65919-Q1 devices (or other compatible TI PMUs) to lock to a common 1.7–2.7 MHz reference clock, reducing beat frequencies and improving system-level EMC performance. The TPS65919-Q1 also provides a 2.2-MHz SYNCCLKOUT signal for cascading timing control.
How does the OTP memory in the TPS65919-Q1 affect power-up behavior?
The TPS65919-Q1 uses factory-programmed one-time programmable (OTP) memory to store default power-up sequences, output voltages, GPIO configurations, and bit-integrity error detection settings. This enables fully autonomous startup without host processor intervention. If OTP corruption is detected during boot, the TPS65919-Q1 can halt the sequence or proceed based on OTP configuration - ensuring deterministic behavior critical for automotive safety systems.
Can the TPS65919-Q1 monitor external voltages or temperatures?
Yes, the TPS65919-Q1 includes a 12-bit sigma-delta GPADC with two dedicated external input channels (ADCIN1 and ADCIN2), enabling direct measurement of external voltages such as battery supply, sensor bias rails, or thermistor-based temperature signals. Internal channels measure die temperature, SMPS output currents, and supply voltages - all accessible via SPI or I²C for real-time system health assessment.
What protection features are integrated into the TPS65919-Q1?
The TPS65919-Q1 integrates comprehensive protection: short-circuit detection and shutdown on all SMPS and LDO outputs; thermal shutdown at 150°C junction temperature with programmable high-temp warning interrupt; input undervoltage lockout (UVLO); power-good monitoring with voltage and overcurrent indication; and OTP bit-integrity error detection. These features ensure robust operation in harsh automotive environments without requiring external supervision circuitry.
O919A14ETRGZTQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
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- Packaging:
- Bulk
- Product Status:
- Active
- Applications:
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- Voltage - Supply:
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O919A14ETRGZTQ1 FAQ
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7.What is the process for return or replacement of O919A14ETRGZTQ1?
All O919A14ETRGZTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with O919A14ETRGZTQ1, 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 O919A14ETRGZTQ1 part is unused and in its original packaging.
Return procedure for O919A14ETRGZTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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