TPS40056PWPR

Texas Instruments · DC-DC Controllers · HTSSOP-16-EP

TPS40056PWPR 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	SYNC	input	Synchronization input that locks the oscillator to an external master frequency; it has VIH of 2 V to 5 V, VIL of 0.8 V maximum, and a minimum pulse width of 50 ns, and it must be connected to SGND if synchronization is not used.
2	RT	input	A resistor from this pin to ground sets the internal oscillator and switching frequency, with RT voltage of 2.38 V to 2.58 V (2.50 V typical) and an absolute maximum output current of 200 µA.
3	BP5	output	5-V reference output (4.5 V to 5.5 V at 1 mA load) that must be bypassed to ground with a 0.1-µF ceramic capacitor and may supply an external DC load of 1 mA or less.
4	EA_REF	input	Non-inverting input to the error amplifier that serves as the reference for the feedback loop, with a common-mode range of 0.2 V to 2.5 V.
5	SGND	power_in	Signal ground reference for the device; the PowerPAD heat slug must be connected to this pin or electrically isolated from all other pins.
6	SS/SD	input	Soft-start programming pin where a capacitor to ground sets the soft-start time using an internal 2.3-µA charge current, and pulling this pin low (below the 90 mV to 165 mV shutdown threshold) disables the controller.
7	VFB	input	Inverting input to the error amplifier that, in normal operation, is held equal to the EA_REF reference voltage.
8	COMP	output	Error amplifier output to the PWM comparator, with a feedback network from this pin to VFB for loop compensation; the pin is internally clamped above the peak of the ramp.
9	PGND	power_in	Power ground reference for the device that requires a low-impedance path to the source(s) of the lower MOSFET(s).
10	LDRV	output	Gate drive for the N-channel synchronous rectifier that switches from BP10 (MOSFET on) to ground (MOSFET off).
11	BP10	output	10-V reference (9.0 V to 10.3 V) used for synchronous rectifier gate drive that must be bypassed with a 1-µF ceramic capacitor and may supply an external DC load of 1 mA or less.
12	SW	input	Connection to the switched node of the converter used for overcurrent sensing, rated −0.3 V to 45 V (−2.5 V transient for less than 50 ns).
13	HDRV	output	Floating gate drive for the high-side N-channel MOSFET that switches from BOOST (MOSFET on) to SW (MOSFET off).
14	BOOST	output	Gate drive voltage for the high-side N-channel MOSFET that sits 9 V above the input voltage, with a 0.1-µF ceramic capacitor connected from this pin to SW.
15	VIN	power_in	Supply voltage for the device, operating over 10 V to 40 V with an absolute maximum of 45 V.
16	ILIM	input	Current-limit threshold pin where an internal 8 µA to 12 µA sink through an external resistor to VCC sets the overcurrent threshold, which is compared against the VIN − SW drop across the high-side MOSFET during conduction.
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 Supply Chip
Pins	17

CAD (KiCad official)

Symbol: TPS40056PWPR
Footprint: Package_SO:TSSOP-16-1EP_4.4x5mm_P0.65mm
3D model: HTSSOP-16-EP (KiCad packages3D, STEP)
3D model files: tps40056pwpr-etched.step / tps40056pwpr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tps40056pwpr.step / tps40056pwpr.glb are the bare package body.

Provenance

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

Datasheet: Texas Instruments datasheet (36 pp, sha256 92cec24b9eb3f487, retrieved 2026-10-08, tier: lcsc)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (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).

Datasheet PDF

# TPS40056PWPR

**Texas Instruments** · DC-DC Controllers · HTSSOP-16-EP

TPS40056PWPR 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 | SYNC | input | Synchronization input that locks the oscillator to an external master frequency; it has VIH of 2 V to 5 V, VIL of 0.8 V maximum, and a minimum pulse width of 50 ns, and it must be connected to SGND if synchronization is not used. |
| 2 | RT | input | A resistor from this pin to ground sets the internal oscillator and switching frequency, with RT voltage of 2.38 V to 2.58 V (2.50 V typical) and an absolute maximum output current of 200 µA. |
| 3 | BP5 | output | 5-V reference output (4.5 V to 5.5 V at 1 mA load) that must be bypassed to ground with a 0.1-µF ceramic capacitor and may supply an external DC load of 1 mA or less. |
| 4 | EA_REF | input | Non-inverting input to the error amplifier that serves as the reference for the feedback loop, with a common-mode range of 0.2 V to 2.5 V. |
| 5 | SGND | power_in | Signal ground reference for the device; the PowerPAD heat slug must be connected to this pin or electrically isolated from all other pins. |
| 6 | SS/SD | input | Soft-start programming pin where a capacitor to ground sets the soft-start time using an internal 2.3-µA charge current, and pulling this pin low (below the 90 mV to 165 mV shutdown threshold) disables the controller. |
| 7 | VFB | input | Inverting input to the error amplifier that, in normal operation, is held equal to the EA_REF reference voltage. |
| 8 | COMP | output | Error amplifier output to the PWM comparator, with a feedback network from this pin to VFB for loop compensation; the pin is internally clamped above the peak of the ramp. |
| 9 | PGND | power_in | Power ground reference for the device that requires a low-impedance path to the source(s) of the lower MOSFET(s). |
| 10 | LDRV | output | Gate drive for the N-channel synchronous rectifier that switches from BP10 (MOSFET on) to ground (MOSFET off). |
| 11 | BP10 | output | 10-V reference (9.0 V to 10.3 V) used for synchronous rectifier gate drive that must be bypassed with a 1-µF ceramic capacitor and may supply an external DC load of 1 mA or less. |
| 12 | SW | input | Connection to the switched node of the converter used for overcurrent sensing, rated −0.3 V to 45 V (−2.5 V transient for less than 50 ns). |
| 13 | HDRV | output | Floating gate drive for the high-side N-channel MOSFET that switches from BOOST (MOSFET on) to SW (MOSFET off). |
| 14 | BOOST | output | Gate drive voltage for the high-side N-channel MOSFET that sits 9 V above the input voltage, with a 0.1-µF ceramic capacitor connected from this pin to SW. |
| 15 | VIN | power_in | Supply voltage for the device, operating over 10 V to 40 V with an absolute maximum of 45 V. |
| 16 | ILIM | input | Current-limit threshold pin where an internal 8 µA to 12 µA sink through an external resistor to VCC sets the overcurrent threshold, which is compared against the VIN − SW drop across the high-side MOSFET during conduction. |
| 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 Supply Chip |
| Pins | 17 |

## CAD (KiCad official)

- Symbol: `TPS40056PWPR`
- Footprint: `Package_SO:TSSOP-16-1EP_4.4x5mm_P0.65mm`
- 3D model: HTSSOP-16-EP (KiCad packages3D, STEP)
- 3D model files: `tps40056pwpr-etched.step` / `tps40056pwpr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps40056pwpr.step` / `tps40056pwpr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/tps40056) (36 pp, sha256 `92cec24b9eb3f487`, retrieved 2026-10-08, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (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).

[Datasheet PDF](docs/tps40056pwpr-datasheet.pdf)