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Texas Instruments TPS2070DAP
- Part No.:
- TPS2070DAP
- Manufacturer:
- Texas Instruments
- Category:
- Power Management - Specialized
- Package:
- 32-PowerTSSOP (0.240", 6.10mm Width)
- Datasheet:
-
TPS2070DAP.pdf
- Description:
- IC PCMCIA PWR I/F SW 32HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:174
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Product details
Overview
TPS2070DAP from Texas Instruments is a four-port USB hub power controller integrating four independent current-limited N-channel high-side power switches, a 3.3-V/100-mA LDO regulator, and a 5-V external regulator controller for self-powered operation. It supports both bus-powered (500 mA per port) and self-powered (100 mA per port) USB 1.1/2.0 hub configurations with thermal and short-circuit protection. Used in embedded USB hubs requiring automatic SP/BP mode switching and DP0_RST signaling.
For engineers reviewing the TPS2070DAP datasheet, TPS2070DAP pinout, TPS2070DAP application, or TPS2070DAP equivalent, key selection criteria include its dual-mode power architecture (BP/SP), programmable PG delay via PG_DLY, active-low enable inputs (EN1–EN4), BPMODE logic polarity (active-low for TPS2070), and HTSSOP-32 PowerPAD™ package thermal performance.
Technical Context
The TPS2070DAP implements two parallel power paths: bus-powered (BP) using 560-mΩ MOSFETs for 100-mA downstream ports, and self-powered (SP) using 107-mΩ MOSFETs for 500-mA downstream ports. Its control logic monitors BP and SP voltages against UVLO thresholds (BP start: 4.25 V; SP start: 4.5 V) and enables automatic switchover when BP_DIS is low.
It integrates a 3.3-V LDO (3.2–3.4 V output, 100-mA max) and a charge-pump-based 5-V regulator controller (VEXT input 6–9 V, GATE drive, CP_P/CP_M pins) to support external N-MOSFET regulation. The BPMODE output signals bus-powered mode with active-low logic, distinct from TPS2071's active-high behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage Range | 4.5 V to 5.5 V on BP input; supports USB-compliant bus power |
| Self-Power Switch RDS(on) | 107 mΩ at 25°C - enables 500-mA continuous output per port with low conduction loss |
| Bus-Power Switch RDS(on) | 560 mΩ at 25°C - limits current to 100 mA per port in bus-powered mode |
| 3.3-V LDO Output | 3.3 V ±3%, 100 mA max - powers USB hub controllers without external regulation |
| PG Delay Adjustment | Capacitor-programmable via PG_DLY pin (1.22 V reference, 3 μA charge current) |
| Ambient Temperature Range | –40°C to +85°C - qualified for industrial and embedded USB host applications |
| Package | 32-pin HTSSOP with PowerPAD™ - provides enhanced thermal dissipation (4255 mW with thermal pad) |
Pinout & Package
TPS2070DAP is housed in a 32-pin HTSSOP (DAP) package with exposed thermal pad (PowerPAD™). Pin 1 is located at top-left corner (marked dot); pin numbering proceeds counterclockwise. The thermal pad must be soldered to PCB ground plane for rated power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1–EN4 | Active-low enable inputs | Individually control each of four downstream power switches; TTL/CMOS compatible |
| OUT1–OUT4 | Power switch outputs | Deliver regulated 5-V power to downstream USB ports; isolated from backfeed by MOSFET body diode elimination |
| BPMODE | Bus-power mode indicator | Active-low output signals bus-powered operation (TPS2070-specific logic polarity) |
| PG | Power-good status | Open-drain output asserted low until 3.3V_OUT stabilizes; delay adjustable via PG_DLY capacitor |
| DP0_RST | Upstream hub reset signal | Generates clean attach/detach pulse on DP0 line using internal timing synchronized to PG |
| VEXT / GATE / CP_P / CP_M / VCP | 5-V external regulator interface | Enables discrete 5-V supply generation using external N-MOSFET and charge-pump circuitry |
| AGND / DGND | Analog and digital ground | Separate ground returns minimize noise coupling between power-switch and control logic domains |
Key Features
| Feature | Design Value |
|---|---|
| Four independent current-limited power switches | Each port has dedicated ENx and OCx signals - enables per-port fault isolation and software-controlled hot-swap |
| Automatic SP/BP switchover | Enabled by grounding BP_DIS; disables if BP_DIS = high - ensures deterministic power-source behavior during self-power loss |
| Integrated 3.3-V LDO | 100-mA output with 0.6-V dropout - eliminates need for external 3.3-V regulator in USB hub controller designs |
| Programmable power-good timing | PG_DLY pin accepts 0.1-μF capacitor to set ~190-ms delay - meets USB hub reset timing requirements |
| Backfeed prevention | All N-channel MOSFETs designed without parasitic body diodes - blocks reverse current from OUTx into BP or SP rails |
Applications
| USB Self-Powered Hub | USB Bus-Powered Hub |
|---|---|
Use Scenario: Desktop or docking station with local 5-V supply powering four downstream USB peripherals. IC Role / Device Role / Timing Role: TPS2070DAP acts as primary power distributor and mode manager, sourcing 500 mA per port from SP rail while generating 3.3 V for hub controller. Use Value: Enables full-speed USB 2.0 operation with no host current draw limitation; thermal shutdown protects against sustained overloads. |
Use Scenario: Portable USB hub drawing power solely from upstream host port. IC Role / Device Role / Timing Role: TPS2070DAP configures all four ports for 100-mA bus-powered operation, asserts BPMODE low, and sequences PG/DP0_RST for compliant attach. Use Value: Meets USB 2.0 bus-powered specification with integrated current limiting and overcurrent reporting (OC1–OC4). |
| Hybrid USB Hub | Industrial USB Host Interface |
Use Scenario: Kiosk or medical device with redundant power: primary SP rail and fallback to host bus power upon failure. IC Role / Device Role / Timing Role: TPS2070DAP monitors SP voltage and automatically switches all ports to BP mode when SP falls below 4.5 V UVLO threshold. Use Value: Maintains USB peripheral connectivity during local supply interruption without firmware intervention. |
Use Scenario: Factory automation controller requiring robust, ESD-hardened USB connectivity in noisy environments. IC Role / Device Role / Timing Role: TPS2070DAP provides current-limited, thermally protected port power with independent OCx fault signaling to MCU. Use Value: Prevents system-level faults from USB cable shorts or hot-plug transients; –40°C to +85°C rating ensures field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB hub power control applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2071DAP | BPMODE output is active-high (vs. active-low in TPS2070DAP); identical pinout and electrical specs otherwise | Requires hub controller firmware logic inversion for BPMODE interpretation | Select TPS2071DAP only when active-high BPMODE simplifies system-level state management |
| TPS2074DB | 24-pin SSOP package; lacks integrated 3.3-V LDO and DP0_RST functionality; no VEXT/GATE/CP interface | Suitable only for bus-powered-only hubs without local 3.3-V supply or upstream reset signaling | Choose TPS2074DB for cost-sensitive, space-constrained bus-powered hubs where 3.3-V regulation is handled externally |
Compared with TPS2071DAP, TPS2070DAP provides native active-low BPMODE signaling for direct compatibility with legacy hub controllers; compared with TPS2074DB, it delivers full hybrid-hub capability including LDO, DP0_RST, and external 5-V regulation control - essential for self-powered or failover designs.
Availability
TPS2070DAP is available at Aetrix Electronics and suitable for USB hub development, industrial embedded host interfaces, and portable docking stations requiring stable component supply across production lifecycles.
Supply support for TPS2070DAP 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 delivering analog, embedded processing, and connectivity solutions with emphasis on reliability, precision, and power efficiency.
The TPS2070 belongs to TI's USB power distribution product line, engineered specifically for compliant, robust, and feature-rich USB hub power management in self-powered, bus-powered, and hybrid configurations.
FAQ
What is the function of the BPMODE pin on the TPS2070DAP?
The BPMODE pin on the TPS2070DAP is an active-low open-drain output that signals bus-powered mode. When the device operates from the BP supply (and SP is invalid or disabled), BPMODE asserts low; it goes high in self-powered mode. This logic polarity is specific to the TPS2070DAP and differs from the active-high BPMODE of the TPS2071DAP. The signal directly informs the USB hub controller of the active power source for configuration.
How does the TPS2070DAP handle automatic switchover between self-powered and bus-powered modes?
The TPS2070DAP enables automatic switchover when BP_DIS is connected to ground. If SP voltage drops below 4.5 V (UVLO stop threshold), the device transitions all ports to BP mode. Switchover is disabled when BP_DIS is pulled high. This behavior is confirmed in the functional description and UVLO specifications. The TPS2070DAP does not require firmware intervention - the transition is fully hardware-managed based on real-time voltage monitoring.
Can the TPS2070DAP drive a 5-V external regulator, and what pins are involved?
Yes, the TPS2070DAP can drive an external 5-V regulator using its integrated charge-pump controller. Required pins are VEXT (6–9 V input), GATE (MOSFET gate drive output), CP_P and CP_M (charge-pump capacitor connections), and VCP (charge-pump output). A typical implementation uses an N-channel MOSFET (e.g., IRLZ24N) with VEXT referenced to SP, enabling efficient 5-V generation for self-powered hub operation.
What is the purpose of the DP0_RST pin on the TPS2070DAP, and how is it timed?
The DP0_RST pin on the TPS2070DAP generates a controlled reset pulse on the upstream DP0 data line to ensure clean USB attach/detach signaling. It outputs a low-to-Hi-Z-to-high sequence synchronized to the PG signal. Pulse duration is approximately 50% of the PG delay and is adjusted via the same capacitor on PG_DLY. This eliminates parasitic charge on the cable and meets USB specification timing for hub enumeration.
Does the TPS2070DAP provide overcurrent protection per port, and how is it signaled?
Yes, the TPS2070DAP provides independent overcurrent protection for each of the four downstream ports. Each port has a dedicated open-drain OCx output (OC1–OC4) that asserts low during overcurrent or overtemperature events. These signals remain latched until the fault condition clears, allowing the host controller to identify and isolate the affected port without affecting other powered devices.
TPS2070DAP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 32-PowerTSSOP (0.240", 6.10mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Applications:
- USB, Peripherals
- Current - Supply:
- 185µA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-HTSSOP
TPS2070DAP FAQ
1.How can I place an order for TPS2070DAP through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2070DAP 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 TPS2070DAP reliable?
The price and inventory of TPS2070DAP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2070DAP is usually 5 days.
3.What payment methods are accepted for TPS2070DAP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2070DAP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2070DAP?
TPS2070DAP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2070DAP 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 TPS2070DAP?
For technical support, including TPS2070DAP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2070DAP requirements.
6.How does Aetrix verify that TPS2070DAP is sourced from the original manufacturer or authorized distributors?
All TPS2070DAP 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 TPS2070DAP meets industry standards.
7.What is the process for return or replacement of TPS2070DAP?
All TPS2070DAP units undergo pre-shipment inspection (PSI). If there is an issue with TPS2070DAP, 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 TPS2070DAP part is unused and in its original packaging.
Return procedure for TPS2070DAP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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