TPS40070PWPG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The TPS40070PWPG4 is a voltage-mode PWM synchronous buck DC-DC controller operating from 4.5 V to 28 V input for generating regulated step-down output voltages. It supports adjustable switching frequency up to 1 MHz, integrated gate drivers for external N-channel MOSFETs, and programmable soft-start in a 16-pin HTSSOP with exposed thermal pad. This controller targets telecom, server, and industrial power supplies requiring flexible, high-efficiency regulation.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- TPS40070PWPG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TPS40070PWPG4?
- Voltage-mode PWM control for predictable loop compensation
- Input voltage range: 4.5 V to 28 V for 12 V and 24 V bus compatibility
- Adjustable switching frequency up to 1 MHz for compact magnetics
- Integrated gate drivers for external synchronous N-channel MOSFETs
- Programmable soft-start to limit inrush current during power-up
- Enable input and power-good output for sequencing in multi-rail systems
- 16-pin HTSSOP package with exposed thermal pad
What is TPS40070PWPG4 used for?
The TPS40070PWPG4 is used in server and workstation power delivery networks generating 1 V to 5 V regulated rails from a 12 V intermediate bus, where its adjustable frequency up to 1 MHz allows use of small inductors and capacitors for high-power-density VRMs. Telecom infrastructure equipment operating from 24 V or 48 V distribution buses uses external pre-regulators with TPS40070 as the final point-of-load controller for FPGA, DSP, and memory supply rails. Industrial automation controllers and test instruments also deploy this IC for precise low-noise DC regulation from unregulated 12 V to 24 V power supplies.
What are the specifications of TPS40070PWPG4?
| YTEOL | 0 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 28V |
| Input Voltage-Min | 4.5V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 2A |
| Output Voltage-Max | 9V |
| Output Voltage-Min | 7V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP16,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | PUSH-PULL |
| Switching Frequency-Max | 1000kHz |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Taiwan |
Where can I find the TPS40070PWPG4 datasheet?
TPS40070PWPG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for TPS40070PWPG4?
Compatible alternatives and drop-in replacements for TPS40070PWPG4:
Switching Controller, Voltage-mode, 2A, 1000kHz Switching Freq-Max, PDSO16
Frequently Asked Questions
What input voltage range does TPS40070PWPG4 support, and which bus topologies does it fit?
The TPS40070PWPG4 accepts input voltages from 4.5 V to 28 V, making it directly compatible with 5 V, 12 V, and 24 V intermediate bus architectures common in server, telecom, and industrial systems. At 12 V nominal input, it covers the full range of standard ATX and distributed power architectures, while 28 V capability accommodates automotive and mil-aero 24 V nominal systems with overhead for transient spikes.
How does the adjustable switching frequency benefit PCB layout in a 12 V to 1.8 V point-of-load converter?
By setting the switching frequency to 500 kHz or 1 MHz using an external resistor, the TPS40070PWPG4 allows the use of inductors as small as 0.47 µH and ceramic output capacitors under 100 µF while maintaining output ripple below 30 mV at 10 A load. Higher switching frequency reduces the physical size of the power stage by over 50% compared to a 100 kHz design, enabling compact point-of-load regulators on high-density server boards and FPGAs with tight PCB real estate constraints.
Does TPS40070PWPG4 require external MOSFETs, and what gate drive current does it deliver?
Yes, the TPS40070PWPG4 is a controller IC that requires external N-channel power MOSFETs for both the high-side and low-side switches of the synchronous buck stage. The integrated gate drivers source and sink up to 2 A peak gate current, enabling fast switching of MOSFETs with gate charges up to 60 nC at 1 MHz, which covers most medium-power 30 V class MOSFETs suitable for 5 A to 20 A output current applications.
How does the soft-start function of TPS40070PWPG4 protect capacitive output loads during power-up?
The TPS40070PWPG4 incorporates a programmable soft-start pin that ramps the output voltage over a user-defined interval set by an external capacitor, typically achieving a 0 V to 1.8 V ramp in 2 ms to 10 ms. This controlled ramp limits inrush current into large bulk output capacitors, preventing voltage drops on the input bus that could reset other loads, and protects sensitive digital ICs from being exposed to fast slewing supplies that violate their power-up sequencing requirements.
How does TPS40070PWPG4 support multi-rail power sequencing in an FPGA power system?
The TPS40070PWPG4 includes an enable input that accepts a logic-level control signal to start or inhibit switching, and a power-good output that asserts high when the output voltage reaches 90% of its regulated target. These two pins allow system designers to sequence multiple voltage rails in a defined order—for example, enabling the 1.0 V core rail first and the 1.8 V I/O rail only after the power-good signal confirms the core is stable—meeting FPGA vendor sequencing requirements without additional supervisory ICs.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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