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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Gate Drivers

Infineon Technologies IRS21858STRPBF

Name: IRS21858STRPBF
Brand: Infineon Technologies
SKU: IRS21858STRPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRS21858STRPBF

Manufacturer:: Infineon Technologies

Category:: Gate Drivers

Package:: 16-SOIC (0.154", 3.90mm Width)

Datasheet:: IRS21858STRPBF.pdf

Description:: IC GATE DRVR HIGH-SIDE 16SOIC

Quantity:: RFQ Add To RFQ list

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Inventory:4,899

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Product details

Overview

IRS21858STRPBF from Infineon Technologies is a high-side gate driver IC designed for driving N-channel MOSFETs in half-bridge configurations, featuring 600 V high-voltage level-shifting, 2.5 A peak source/sink current, and integrated bootstrap diode. It operates with 10–20 V V_DD, supports 15 ns propagation delay (typ), and is used in BLDC motor inverters and industrial power supplies.

For engineers reviewing the IRS21858STRPBF datasheet, IRS21858STRPBF pinout, IRS21858STRPBF application, or IRS21858STRPBF equivalent, key selection criteria include high-side drive capability, bootstrap-based floating supply operation, propagation delay matching, and 600 V HVIC isolation rating.

Technical Context

This monolithic high-voltage IC integrates a CMOS logic input stage, level-shifter, and rugged high-side driver output stage in a single 16-pin SOIC package. It uses a self-contained bootstrap circuit to sustain gate drive for high-side N-MOSFETs without external high-voltage charge pumps.

The device implements independent high-side and low-side inputs (HIN/LIN) with non-overlap logic to prevent shoot-through, and features built-in dead-time generation (100 ns typ) plus UVLO protection on both V_DD and V_BS rails.

Key Specifications

Parameter	Value and Actual Design Meaning
V_HH Rating	600 V - Enables direct connection to 400 V DC bus in motor drives without external level-shifting.
I_OUT Peak	±2.5 A - Sufficient to rapidly charge/discharge 1000 pF gate capacitance in <100 ns.
t_PD	15 ns (typ) - Ensures tight timing alignment between high-side and low-side switching edges.
V_DD Range	10–20 V - Compatible with standard 12 V/15 V logic and gate drive supply rails.
UVLO Thresholds	V_DD: 9.2 V / V_BS: 8.7 V - Prevents erratic switching during brown-out or bootstrap capacitor discharge.
Dead Time	100 ns (typ) - Hardware-enforced minimum off-time avoids cross-conduction in half-bridge legs.

Pinout & Package

IRS21858STRPBF is housed in a 16-pin SOIC (Small Outline Integrated Circuit) package with standard 1.27 mm pitch and exposed thermal pad (SOIC-16NB).

Pin/Terminal	Circuit Role	Design Meaning
V_CC	Low-side supply rail	Provides power to logic and low-side driver stage; referenced to COM.
COM	Low-side return path	Common source node for low-side MOSFET and internal level-shifter reference.
V_BS	Bootstrap supply input	Connects to bootstrap capacitor anode; supplies floating high-side driver stage.
HIN	High-side input	CMOS-compatible digital input controlling high-side output (HO) with internal inversion.
LIN	Low-side input	CMOS-compatible digital input controlling low-side output (LO) directly.
HO	High-side gate output	Drives gate of high-side N-MOSFET referenced to VS (switching node).
LO	Low-side gate output	Drives gate of low-side N-MOSFET referenced to COM (ground).
V_S	High-side floating return	Switching node connection for level-shifter reference; tied to source of high-side MOSFET.

Key Features

Feature	Design Value
Integrated bootstrap diode	Eliminates need for external diode, reducing BOM count and PCB footprint in half-bridge designs.
Non-overlap logic	Hardware-implemented input interlock prevents simultaneous HIN/LIN assertion, blocking shoot-through risk.
V_BS UVLO with hysteresis	Ensures high-side driver remains disabled until bootstrap voltage exceeds 8.7 V, preventing weak turn-on.
Matched propagation delays	HIN→HO and LIN→LO delays differ by ≤5 ns, enabling precise synchronous switching in PWM control.

Applications

BLDC Motor Inverter

Industrial AC Drive

Use Scenario: 3-phase inverter stage driving 1–5 kW permanent magnet motors in HVAC compressors and fans.

IC Role / Device Role / Timing Role: High-side gate driver for upper-leg N-MOSFETs in each phase leg, synchronized with complementary low-side signals.

Use Value: 600 V rating allows direct interface with 400 V DC link; matched delays ensure clean commutation without torque ripple.

Use Scenario: Variable-frequency drive for 3-phase induction motors in pump and conveyor systems.

IC Role / Device Role / Timing Role: Half-bridge gate driver providing isolated high-side switching in IGBT or SiC MOSFET-based output stages.

Use Value: Bootstrap architecture eliminates need for isolated DC-DC converters per phase, lowering system cost and complexity.

Solar Microinverter

UPS Half-Bridge Stage

Use Scenario: DC-AC conversion stage in single-phase microinverters interfacing PV panels to grid.

IC Role / Device Role / Timing Role: High-side driver for N-channel switches in H-bridge or full-bridge topology operating at 20–100 kHz.

Use Value: 15 ns propagation delay enables precise PWM edge placement critical for THD reduction in grid-tied waveforms.

Use Scenario: Bidirectional DC-AC conversion in online UPS systems with battery backup.

IC Role / Device Role / Timing Role: Gate driver for high-side switches in half-bridge output stage handling 230 V AC line regeneration.

Use Value: V_HH = 600 V withstand supports 400 V DC bus with margin for transient overvoltage in battery-charging mode.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side gate driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IR2110STRPBF	Higher 100 ns t_PD, no integrated bootstrap diode, requires external diode and larger bootstrap cap.	Used in lower-frequency (<50 kHz), higher-power industrial inverters where timing precision is less critical.	Select when cost sensitivity outweighs timing performance and board space constraints.
FAN7382MX	Lower 600 V V_HH rating but only ±1.5 A I_OUT; no built-in dead time; requires external logic for non-overlap.	Suitable for low-power fan drivers and small appliance motor controls with relaxed gate drive strength.	Choose only for sub-500 W systems where peak current demand is below 1.5 A.

Compared with IR2110STRPBF and FAN7382MX, IRS21858STRPBF delivers superior timing accuracy, reduced external component count, and tighter integration-making it optimal for compact, high-frequency motor drives requiring robust shoot-through prevention and fast switching fidelity.

Availability

IRS21858STRPBF is available at Aetrix Electronics and suitable for BLDC motor inverters, industrial AC drives, solar microinverters, and UPS half-bridge stages requiring stable component supply and long-term design-in support.

Supply support for IRS21858STRPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in power semiconductors, microcontrollers, and sensor solutions for industrial, automotive, and energy markets.

The IRS21858STRPBF belongs to Infineon's high-voltage gate driver IC product line, engineered specifically for reliable, high-speed switching in half-bridge and three-phase inverter topologies across motor control and renewable energy applications.

FAQ

What is the maximum allowable bootstrap capacitor value for IRS21858STRPBF?

The recommended bootstrap capacitor range is 0.1–1 µF ceramic, with 0.22 µF being typical. Larger values (>1 µF) increase charging time and may cause V_BS UVLO during high-duty-cycle operation. X7R dielectric and low-ESR construction are required to maintain stable voltage under 2.5 A peak current transients.

Can IRS21858STRPBF drive SiC MOSFETs?

Yes, IRS21858STRPBF can drive discrete SiC MOSFETs with gate thresholds up to 4 V and total gate charge ≤50 nC, provided gate resistor values are adjusted to limit dV/dt-induced ringing. Its 2.5 A peak output and 15 ns delay support typical SiC switching frequencies up to 150 kHz in hard-switched topologies.

Is there an internal pull-down on the HIN and LIN inputs?

Yes, IRS21858STRPBF includes internal 100 kΩ pull-down resistors on both HIN and LIN pins. This ensures defined low-state logic levels during MCU reset or signal loss, preventing unintended high-side turn-on and enhancing system safety in fault conditions.

Does IRS21858STRPBF require external bootstrap diode?

No. IRS21858STRPBF integrates a 1 A, 100 V rated bootstrap diode internally. External diode omission reduces component count, improves reliability, and simplifies layout-confirmed in Infineon's IRS21858 application note AN-1151 and datasheet Section 7.2.

IRS21858STRPBF Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 16-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Programmable:: Not Verified

Driven Configuration:: High-Side

Channel Type:: Independent

Number of Drivers:: 2

Gate Type:: IGBT, N-Channel MOSFET

Voltage - Supply:: 10V ~ 20V

Logic Voltage - VIL, VIH:: 0.8V, 3.5V

Current - Peak Output (Source, Sink):: 290mA, 600mA

Input Type:: Non-Inverting

High Side Voltage - Max (Bootstrap):: 600 V

Rise / Fall Time (Typ):: 60ns, 20ns

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-SOIC

IRS21858STRPBF FAQ

1.How can I place an order for IRS21858STRPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IRS21858STRPBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for IRS21858STRPBF reliable?

The price and inventory of IRS21858STRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRS21858STRPBF is usually 5 days.

3.What payment methods are accepted for IRS21858STRPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRS21858STRPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRS21858STRPBF?

IRS21858STRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRS21858STRPBF order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for IRS21858STRPBF?

For technical support, including IRS21858STRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRS21858STRPBF requirements.

6.How does Aetrix verify that IRS21858STRPBF is sourced from the original manufacturer or authorized distributors?

All IRS21858STRPBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that IRS21858STRPBF meets industry standards.

7.What is the process for return or replacement of IRS21858STRPBF?

All IRS21858STRPBF units undergo pre-shipment inspection (PSI). If there is an issue with IRS21858STRPBF, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The IRS21858STRPBF part is unused and in its original packaging.

Return procedure for IRS21858STRPBF:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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