component
TPS40055PWPR
Public Made by Adomby adom
Texas Instruments DC-DC Converters, HTSSOP-16-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownTPS40055PWPR
Texas Instruments · DC-DC Converters · HTSSOP-16-EP
TPS40055PWPR from Texas Instruments, in a HTSSOP-16-EP. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | KFF | input | Resistor from this pin to VIN programs voltage feedforward compensation and UVLO threshold level, with internal current division controlling PWM ramp slope. |
| 2 | RT | input | Resistor from this pin to ground sets the switching frequency of the internal oscillator according to fSW = 17.82×10⁶/(RT + 17 kΩ). |
| 3 | BP5 | power_out | 5-V voltage reference output; bypass to ground with 0.1-µF ceramic capacitor and limit external DC load to 1 mA maximum. |
| 4 | SYNC | input | Synchronization input for external oscillator clock source, or connect to SGND for free-running operation at RT-programmed frequency. |
| 5 | SGND | power_in | Signal ground reference for the device; must make single point connection to PGND plane. |
| 6 | SS/SD | input | Soft-start and shutdown control pin; capacitor charged at 2.3-µA internal source creates startup ramp from 0.85 V to 1.55 V regulation threshold. |
| 7 | VFB | input | Inverting input to error amplifier with 0.7-V internal reference voltage; feedback network connected from COMP pin regulates closed-loop output voltage. |
| 8 | COMP | output | Error amplifier output and PWM comparator input; internally clamped above peak ramp voltage to improve large signal transient response. |
| 9 | PGND | power_in | Power ground reference requiring low-impedance connection path to lower MOSFET source or sources. |
| 10 | LDRV | tri_state | Gate driver output for N-channel synchronous rectifier MOSFET, switching between BP10 voltage (on) and ground (off). |
| 11 | BP10 | power_out | 10-V voltage reference output for synchronous rectifier gate drive; bypass with 1-µF ceramic capacitor and limit external DC load to 1 mA maximum. |
| 12 | SW | input | Switched node connection point for overcurrent sensing; voltage (VIN - SW) across high-side MOSFET compared to ILIM voltage. |
| 13 | HDRV | tri_state | Floating gate driver output for high-side N-channel MOSFET, switching between BOOST voltage (on) and SW node voltage (off). |
| 14 | BOOST | power_out | Bootstrap gate drive supply voltage for high-side MOSFET gate driver; nominally 9 V greater than SW voltage, bypass with 0.1-µF ceramic capacitor. |
| 15 | VIN | power_in | Supply voltage input for device operation over 8 V to 40 V input range; recommend 8 V to 40 V per Recommended Operating Conditions. |
| 16 | ILIM | input | Current limit setting input with internal 8.5-µA current sink; resistor from VIN sets overcurrent threshold by comparing voltage drop across resistor to (VIN - SW). |
| 17 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | HTSSOP-16-EP |
| Category | Power Management (PMIC) |
| Pins | 17 |
CAD (KiCad official)
- Symbol:
TPS40055PWPR - Footprint:
Package_SO:TSSOP-16-1EP_4.4x5mm_P0.65mm - 3D model: HTSSOP-16-EP (KiCad packages3D, STEP)
- 3D model files:
tps40055pwpr-etched.step/tps40055pwpr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tps40055pwpr.step/tps40055pwpr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (43 pp, sha256
8efd3db408deb44b, retrieved 2026-09-24, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).