TPS40050PWPR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The TPS40050PWPR is a voltage-mode PWM step-down DC-DC controller IC supporting 8V to 40V input with positive output regulation, designed for synchronous or non-synchronous buck converter topologies in a 16-pin HTSSOP package. It offers adjustable frequency, soft-start, and protection features for robust industrial and telecom power supply designs.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- NOT RECOMMENDED
- Datasheet
- TPS40050PWPR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.1045(MOQ 1)
- 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 TPS40050PWPR?
- Voltage-mode PWM buck controller with 8V to 40V wide input range and adjustable switching frequency up to 1 MHz, enabling compact transformer-less step-down designs for 24V industrial rails
- Programmable soft-start and overcurrent protection with external MOSFET drive capability, allowing safe startup and fault handling in synchronous and non-synchronous buck converter stages
- 16-pin HTSSOP package with exposed thermal pad for efficient heat dissipation in high-duty-cycle step-down converter designs requiring compact, surface-mount power controller integration
What is TPS40050PWPR used for?
The TPS40050PWPR is used in industrial and telecom power supply designs requiring step-down conversion from 8V to 40V input rails, such as 24V industrial bus regulators, 48V telecom point-of-load converters with a pre-regulator, and distributed power architecture boards in factory automation systems. Its adjustable PWM frequency and synchronous MOSFET drive output make it well-suited for high-efficiency buck stages supplying DSPs, FPGAs, and microcontrollers from wide-range input voltages. Embedded computing modules, motor controller auxiliary supplies, and programmable logic controller power boards also use this device for its programmable soft-start and fault protection in space-constrained HTSSOP-16 layouts.
What are the specifications of TPS40050PWPR?
| Pbfree Code | Yes |
| YTEOL | 3.9 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 40V |
| Input Voltage-Min | 8V |
| Input Voltage-Nom | 24V |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 20A |
| Output Voltage-Max | 35V |
| Output Voltage-Min | 0.7V |
| Output Voltage-Nom | 32.5V |
| 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 |
| Technology | BICMOS |
| 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) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Taiwan |
Where can I find the TPS40050PWPR datasheet?
TPS40050PWPR Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for TPS40050PWPR?
Compatible alternatives and drop-in replacements for TPS40050PWPR:
Switching Controller, Voltage-mode, 20A, 1000kHz Switching Freq-Max, BICMOS, PDSO16
Frequently Asked Questions
What input voltage range does the TPS40050PWPR support, and what industrial bus voltages can it step down from?
The TPS40050PWPR accepts input voltages from 8V minimum to 40V maximum, with a nominal design center at 24V. This range covers direct conversion from the 24V industrial control bus, the 12V ATX system bus, and pre-regulated 36V to 40V telecom inputs. It can step down to output voltages as low as 0.7V (reference voltage), covering DSP core rails at 1.2V and FPGA I/O rails at 3.3V from a single 24V industrial input.
Does TPS40050PWPR support synchronous rectification, and how does this affect efficiency at high output currents?
Yes, the TPS40050PWPR includes a complementary gate drive output for a synchronous low-side MOSFET, replacing the freewheeling Schottky diode in a conventional buck converter. At output currents above 5A, synchronous rectification eliminates the 0.4V to 0.7V diode forward drop loss, improving full-load efficiency by 3% to 8% compared to non-synchronous designs at the same 8V to 40V input range — particularly beneficial in 24V to 5V/10A industrial step-down converters running continuously.
How is the switching frequency configured in the TPS40050PWPR, and what frequency range is achievable?
The TPS40050PWPR switching frequency is set by a single external resistor connected to the RT pin, allowing adjustment from approximately 50 kHz to 1 MHz. Lower frequencies (100 kHz to 300 kHz) reduce switching losses for 40V input high-voltage designs, while higher frequencies (500 kHz to 1 MHz) minimize inductor size for 8V to 12V input applications. The external resistor provides independent frequency selection without requiring an external oscillator or synchronization clock source.
What protection features does the TPS40050PWPR include to safeguard the power stage during fault conditions?
The TPS40050PWPR includes programmable overcurrent protection via a current sense comparator that monitors the high-side MOSFET current, triggering hiccup-mode shutdown when peak inductor current exceeds the threshold set by an external sense resistor (typically 5 mOhm to 20 mOhm for 5A to 20A applications). It also features undervoltage lockout below 8V input, gate-drive under-voltage detection, and programmable soft-start via an external capacitor (typically 10 nF to 100 nF) to control inrush current ramp-up time from 1 ms to 20 ms at power-on.
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Why Buy from FindMyChip
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.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
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| 1+ | $5.3200 | $5.32 |
| 56+ | $3.5821 | $200.60 |
| 73+ | $3.4627 | $252.78 |
| 97+ | $3.1045 | $301.14 |
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