component
IR21531STRPBF
Public Made by Adomby adom
Infineon Technologies Gate Drivers, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads on click. Unloads only if this page sits in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads on click. Unloads only if this page sits in the background.
PCB Footprint
Open full view ↗Loads on click. Unloads only if this page sits in the background.
Datasheet
Open in new tab ↗Loads on click. Unloads only if this page sits in the background.
README
markdownIR21531STRPBF
Infineon Technologies · Gate Drivers · SOIC-8
IR21531STRPBF from Infineon Technologies, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VCC | power_in | Logic and internal gate drive supply voltage; operating range 10 V to VCLAMP; 15.6 V typ zener clamp; rising UVLO threshold 9.0 V typ, quiescent supply current 500 µA typ. |
| 2 | RT | passive | Oscillator timing resistor pin; sets oscillator frequency via external resistor (≥10 kΩ) to COM; internal circuitry swings pin between VRT+ (VCC − 10 mV typ) and VRT- (10 mV typ). |
| 3 | CT | passive | Oscillator timing capacitor pin; internal ramp swings between 4.0 V and 8.0 V thresholds (VCC = 12 V); pulling CT below 2.1 V typ shuts down both gate driver outputs; recommended CT ≥ 330 pF. |
| 4 | COM | power_in | IC power and signal ground; all low-side voltages and logic thresholds are referenced to this pin. |
| 5 | LO | output | Low-side gate driver output; in phase with RT; VOH = VCC, VOL = 0 V (0 mV typ at IO = 0 A); rise time 80 ns typ / 150 ns max, fall time 45 ns typ / 100 ns max. |
| 6 | VS | power_in | High-side floating supply offset voltage (switched node); steady-state range −3.0 V to 600 V referenced to COM; allowable dVS/dt ±50 V/ns; absolute min VB − 25 V. |
| 7 | HO | output | High-side gate driver output; floating output referenced to VS; VOH = VB − 0 mV typ (IO = 0 A), VOL = VS + 0 mV typ; rise time 80 ns typ, fall time 45 ns typ; deadtime 0.60 µs typ. |
| 8 | VB | power_in | High-side floating supply voltage; range VCC − 0.7 V to VCLAMP under recommended operation; absolute maximum 625 V; minimum VBS (VB − VS) = 4.0-5.0 V required for proper HO operation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Infineon Technologies |
| Package | SOIC-8 |
| Category | Motor Driver ICs |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
IR21531STRPBF - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
ir21531strpbf-etched.step/ir21531strpbf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ir21531strpbf.step/ir21531strpbf.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Infineon Technologies datasheet (9 pp, sha256
33ffe0a7ca01b7a2, retrieved 2026-09-21, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-sonnet-4-6(text+vision), consensusclaude-opus-4-7(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).