IRS20957STRPBF from Infineon, in a SOIC-16. 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	VDD	power_in	Floating input positive supply. Referenced to VSS. Absolute max -0.3 V to (VSS+... clamped by internal 10.2 V zener). Recommended operating around 5 V above VSS for logic-side power.
2	CSD	input	Shutdown timing capacitor pin, referenced to VSS. External capacitor sets the charge/discharge timing for the protection reset function. Voltage range VSS-0.3 V to VDD+0.3 V.
3	IN	input	PWM non-inverting input, in phase with HO. Compatible with 3.3 V / 5 V logic levels referenced to VSS. Voltage range VSS-0.3 V to VDD+0.3 V.
4	VSS	power_in	Floating input supply return. Local ground reference for the floating PWM input section (VDD, CSD, IN). Can float up to ~200 V with respect to COM.
5	NC	unconnected	No connect. Leave floating or tie per application notes.
6	VREF	power_out	5.1 V reference output, referenced to COM. Used with an external resistor divider to set the OCSET over-current threshold. Max output current 5 mA.
7	OCSET	input	Low-side over-current threshold setting input, referenced to COM. External resistor divider from VREF programs the low-side OC trip point. Voltage range -0.3 V to VCC+0.3 V.
8	DT	input	Input for programmable dead-time selection, referenced to COM. Sets one of four preset dead-time values (15/25/35/80 ns) based on the applied voltage level. Range -0.3 V to VCC+0.3 V.
9	COM	power_in	Low-side supply return / device ground. Reference for VCC, LO, DT, OCSET, VREF, and the absolute-max voltage reference for the entire part.
10	LO	output	Low-side gate drive output. Drives the low-side power MOSFET gate; swings between COM and VCC. Typical peak sink 1.2 A / source 1.0 A. Internal 20.4 V clamp to COM.
11	VCC	power_in	Low-side fixed supply, referenced to COM. Typically 12 V (absolute max 20 V). Contains an internal shunt zener; observe clamp current limits.
12	NC	unconnected	No connect. Leave floating or tie per application notes.
13	VS	power_in	High-side floating supply return. Connects to the switching node between the high-side and low-side power MOSFETs. Range VB-15 V to VB+0.3 V; tolerates -100 V to +100 V bus operation.
14	HO	output	High-side floating gate drive output. Drives the high-side power MOSFET; swings between VS and VB. Typical peak sink 1.2 A / source 1.0 A. Internal 15.3 V clamp to VS.
15	VB	power_in	High-side floating supply (bootstrap). Referenced to VS. Absolute max 215 V with respect to COM; supplied via bootstrap capacitor/diode from VCC.
16	CSH	input	High-side over-current sensing input, referenced to VS. Senses the drain-source voltage of the high-side MOSFET (RDS(on) sensing) for bi-directional over-current detection. Range VS-0.3 V to VB+0.3 V.

Key specifications

Parameter	Value
Manufacturer	Infineon
Package	SOIC-16
Category	Op-amp/Cmp
Pins	16

Ordering variants

Same part, different packaging or reel option.

IRS20957STRPBF

CAD (KiCad official)

Symbol: IRS20957STRPBF
Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
3D model: SOIC-16 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`irs20957strpbf.step`	217 KB	You want the bare part, or you mark your own boards.
`irs20957strpbf-etched.step`	3.4 MB	You want the part with `IRS20957STRPBF` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 831 faces against 267 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Infineon datasheet (18 pp, sha256 7abc11de07f6d4e9, retrieved 2026-08-17, tier: manufacturer)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF