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Texas Instruments TPS5602IDBT
- Part No.:
- TPS5602IDBT
- Manufacturer:
- Texas Instruments
- Category:
- Special Purpose Regulators
- Package:
- 30-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS5602IDBT.pdf
- Description:
- IC REG CTRLR DSP 2OUT 30TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,041
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Product details
Overview
TPS5602IDBT from Texas Instruments is a dual-channel synchronous buck switch-mode power supply controller designed for high-efficiency, fast-transient DSP power delivery. It features hysteretic control (8.5 mV typical hysteresis), 4.5–25 V input range, adjustable output down to 1.2 V, and supports >95% efficiency via synchronous rectification in applications such as TI 'C6000 and 'C54x DSP core/I/O sequencing.
For engineers reviewing the TPS5602IDBT datasheet, TPS5602IDBT pinout, TPS5602IDBT application, or TPS5602IDBT equivalent, key selection criteria include independent channel standby control, 1-µA max standby current, dual soft-start timing configuration, and integrated 5-V regulator with ±6% tolerance for bootstrap simplification.
Technical Context
The TPS5602IDBT implements independent hysteretic comparators per channel-each with 500 ns low-to-high and 350 ns high-to-low propagation delay-to enable sub-microsecond transient response. Its dual-channel architecture supports up/down sequencing via separate STBY1/STBY2 pins and includes dedicated current-limit circuitry using internal 15 µA current sources and external TRIPx resistors.
It integrates a 5-V linear regulator (Vref5) with 80 mA short-circuit capability and an internal 5-V switch that disconnects the regulator when REG5V_IN ≥ 4.2 V, enabling external 5-V sourcing for higher efficiency. UVLO triggers at 3.8 V (±149 mV hysteresis), and deadtime control enforces 75 ns (LH→HL) and 164 ns (HL→LH) minimum intervals to prevent shoot-through.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 25 V - supports wide-input industrial and telecom power rails without pre-regulation |
| Output Voltage Range | Adjustable down to 1.2 V - enables direct core voltage regulation for modern DSPs and microprocessors |
| Hysteresis Window | 8.5 mV typical - ensures stable regulation with minimal output ripple under fast load steps |
| Standby Current | ≤1 µA maximum - enables ultra-low-power sequencing and system-level power gating |
| Driver Output Current | ±1.2 A sink/source - drives low-Rds(on) n-channel MOSFETs without external gate drivers |
| Reference Voltage | 1.185 V ±1.5% - precision reference for accurate output voltage setting and under-voltage protection |
| UVLO Threshold | 3.8 V with 149 mV hysteresis - prevents erratic startup during brownout conditions |
Pinout & Package
TPS5602IDBT is housed in a 30-pin TSSOP (DBT) package with exposed thermal pad. Pin functions are validated per SLVS217 datasheet, including dual-channel gate drive outputs, independent soft-start and standby controls, and dedicated current-sense inputs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INV1, INV2 | Hysteretic comparator inverting inputs | Direct feedback nodes for channel-specific output voltage regulation |
| OUT1_u / OUT2_u | High-side gate drive outputs | Drive n-channel high-side MOSFET gates with ±1.2 A capability |
| OUT1_d / OUT2_d | Low-side gate drive outputs | Drive n-channel low-side MOSFET gates referenced to respective OUTGNDx |
| STBY1, STBY2 | Channel enable/disable control | Logic-level inputs (<0.5 V = standby, <1 µA quiescent) for independent power sequencing |
| TRIP1, TRIP2 | Current limit threshold inputs | Accept external resistor to set overcurrent trip point using internal 15 µA current source |
| Vref5 | 5-V internal regulator output | Provides regulated 5 V (±6%) for bootstrap and external circuitry; 80 mA short-circuit rated |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent hysteretic controllers | Enables asynchronous operation and flexible sequencing without shared timing components |
| Integrated 5-V linear regulator + switch | Eliminates need for external bootstrap supply; automatically switches to external 5-V when present |
| Separate soft-start capacitors (SOFTSTART1/2) | Allows precise, independent ramp-up timing per channel (C = 2 × Tsoft in µF/ms) |
| Current protection with external resistor programming | Supports accurate, application-specific overcurrent limits using Rclmt = (Rds(on) × (Itrip − Iind(p-p)/2)) / 0.000015 |
| UVLO with 149 mV hysteresis | Ensures clean power-on reset and prevents oscillation during marginal input conditions |
Applications
| DSP Core & I/O Power Sequencing | Industrial DSP Power Supply |
|---|---|
Use Scenario: Powering TI 'C6000 DSPs requiring 1.8 V core and 3.3 V I/O with strict up/down sequencing. IC Role / Device Role / Timing Role: Dual-channel controller managing independent soft-start and standby-triggered shutdown to enforce core-first power-up and coordinated power-down. Use Value: Prevents DSP latch-up by ensuring core voltage stabilizes before I/O activation and collapses simultaneously during fault conditions. | Use Scenario: High-efficiency 4.5–25 V input power conversion for programmable logic controllers and motor control DSPs. IC Role / Device Role / Timing Role: Synchronous buck controller delivering >95% efficiency at 4 A/3 A loads with minimal external components. Use Value: Reduces thermal stress and improves system MTBF by eliminating discrete gate drivers and minimizing conduction losses. |
| Telecom Line Card Power | Test Equipment DSP Power |
Use Scenario: Dual-output DC/DC stage in telecom line cards where input voltage varies from 5 V to 12 V. IC Role / Device Role / Timing Role: Fast-transient controller maintaining tight regulation (<±15 mV load/line variation) across both outputs under dynamic traffic loads. Use Value: Maintains signal integrity and jitter performance in high-speed serial interfaces powered by regulated DSP supplies. | Use Scenario: Benchtop test equipment requiring stable, low-noise DSP power with rapid prototyping support. IC Role / Device Role / Timing Role: Evaluation-ready controller used on TPS5602EVM-121 with plug-in compatibility for quick validation. Use Value: Accelerates design cycle by providing verified layout, BOM, and test data for 1.8 V/4 A and 3.3 V/3 A outputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel synchronous buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS5604IDBT | Same DBT package and pinout; adds integrated MOSFETs (not controller-only); lower input voltage range (3–17 V) | Suitable for space-constrained designs where board area is critical but input voltage is limited to ≤17 V | Select TPS5604IDBT only if integrated FETs are acceptable and input voltage stays below 17 V |
| LM5116PWPR | Single-channel, wide-input (6–100 V), external MOSFET controller; no integrated 5-V regulator or dual soft-start | Applicable to high-voltage industrial supplies where dual-channel operation is not required | Choose LM5116PWPR for >25 V inputs or when channel independence is unnecessary |
Compared with TPS5602IDBT, TPS5604IDBT integrates power stages but sacrifices input voltage headroom, while LM5116PWPR offers higher input voltage tolerance at the cost of losing dual-channel control, sequencing, and on-chip 5-V regulation-making TPS5602IDBT uniquely suited for DSP-centric, dual-rail, fast-transient applications.
Availability
TPS5602IDBT is available at Aetrix Electronics and suitable for DSP power sequencing, industrial embedded power supplies, and telecom line card applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS5602IDBT 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 DSP power innovation.
The TPS5602 product line was engineered specifically for high-efficiency, fast-transient dual-rail power delivery in TI's 'C54x and 'C6000 DSP platforms-emphasizing independent sequencing, low standby current, and simplified bootstrap design.
FAQ
What is the function of the Vref5 pin on the TPS5602IDBT?
The Vref5 pin on the TPS5602IDBT delivers a regulated 5-V output (±6% tolerance) sourced from an internal linear regulator. It provides bootstrap voltage for high-side gate drivers and can power external circuitry, with 80 mA short-circuit current capability. When an external 5-V supply is applied to REG5V_IN, the internal regulator disconnects automatically to improve efficiency-ensuring optimal operation across both integrated and external bias configurations in the TPS5602IDBT.
How does the TPS5602IDBT achieve power sequencing between its two channels?
The TPS5602IDBT achieves power sequencing using independent STBY1 and STBY2 pins: grounding STBY1 first enables Channel 1, and STBY2 can be held low until Channel 1's output reaches its target (e.g., via external supervisor). This enforces core-before-I/O startup. During fault, dropping STBY1 pulls down both channels. The TPS5602IDBT's separate SOFTSTART1/SOFTSTART2 pins further refine ramp timing-enabling precise, asymmetric sequencing unattainable with single-controller solutions.
What is the recommended external current-limit resistor value for the TPS5602IDBT's TRIP1 pin?
The recommended external current-limit resistor for the TPS5602IDBT's TRIP1 pin is calculated using Rclmt = (Rds(on) × (Itrip − Iind(p-p)/2)) / 0.000015, where Rds(on) is the high-side MOSFET's on-resistance, Itrip is the desired overcurrent threshold, and Iind(p-p) is peak-to-peak inductor ripple. For example, with Rds(on) = 10 mΩ, Itrip = 5 A, and Iind(p-p) = 2 A, Rclmt = 4 kΩ. This equation is validated in SLVS217 and directly applies to the TPS5602IDBT's current protection architecture.
Does the TPS5602IDBT support both ground-referenced and floating high-side driver configurations?
Yes, the TPS5602IDBT supports both configurations: for ground-referenced operation, connect LL1/LL2 to DRVGND; for floating operation, route LL1/LL2 directly to the source of the high-side MOSFET and place the bootstrap capacitor (LHx to LLx) close to the IC. The high-side driver delivers ±1.2 A with 5-V gate drive referenced to OUTGNDx, and LHx tolerates up to 30 V relative to OUTGNDx-enabling robust implementation across topologies in the TPS5602IDBT design.
What is the purpose of the CT pin on the TPS5602IDBT, and how does it affect switching behavior?
The CT pin on the TPS5602IDBT connects to an external capacitor that sets oscillator frequency in hysteretic mode. With Ct = 100 pF, typical frequency is 67.5 kHz; without Ct, frequency rises to 202.4 kHz. Unlike fixed-frequency controllers, the TPS5602IDBT's hysteretic architecture means actual switching frequency varies dynamically with input/output voltage, inductance, and load-but CT provides coarse tuning to avoid EMI-sensitive bands. This behavior is intrinsic to the TPS5602IDBT's fast-transient control methodology.
TPS5602IDBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 30-TFSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Applications:
- Controller, DSP
- Voltage - Input:
- 4.5V ~ 25V
- Number of Outputs:
- 2
- Voltage - Output:
- Adj down to 1.2V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 30-TSSOP
TPS5602IDBT FAQ
1.How can I place an order for TPS5602IDBT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS5602IDBT 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 TPS5602IDBT reliable?
The price and inventory of TPS5602IDBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS5602IDBT is usually 5 days.
3.What payment methods are accepted for TPS5602IDBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS5602IDBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS5602IDBT?
TPS5602IDBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS5602IDBT 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 TPS5602IDBT?
For technical support, including TPS5602IDBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS5602IDBT requirements.
6.How does Aetrix verify that TPS5602IDBT is sourced from the original manufacturer or authorized distributors?
All TPS5602IDBT 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 TPS5602IDBT meets industry standards.
7.What is the process for return or replacement of TPS5602IDBT?
All TPS5602IDBT units undergo pre-shipment inspection (PSI). If there is an issue with TPS5602IDBT, 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 TPS5602IDBT part is unused and in its original packaging.
Return procedure for TPS5602IDBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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