Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Infineon Technologies IRS21850SPBF

Name: IRS21850SPBF
Brand: Infineon Technologies
SKU: IRS21850SPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: IRS21850SPBF

Manufacturer:: Infineon Technologies

Category:: Gate Drivers

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: IRS21850SPBF.pdf

Description:: IC GATE DRVR HIGH-SIDE 8SOIC

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,418

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

IRS21850SPBF from Infineon Technologies is a high-side gate driver IC designed for driving N-channel MOSFETs in half-bridge configurations. It features 600 V high-voltage level-shifting, 2.5 A peak source/sink current, and integrated bootstrap diode. Used in BLDC motor inverters and industrial AC drives requiring robust high-side switching.

For engineers reviewing the IRS21850SPBF datasheet, IRS21850SPBF pinout, IRS21850SPBF application, or IRS21850SPBF equivalent, key selection criteria include high-voltage isolation capability, propagation delay matching (typ. 25 ns), undervoltage lockout thresholds (V_CC = 10.1 V / 8.8 V, V_BS = 9.2 V / 7.7 V), and thermal shutdown protection.

Technical Context

This monolithic high-side driver integrates a level-shift circuit to translate logic-level input signals across a 600 V floating high-side rail. It uses a pulsed-current bootstrap supply architecture with internal diode, eliminating external bootstrap diode requirement.

The device implements dual undervoltage lockout (UVLO) on both V_CC and V_BS rails, with hysteresis to prevent oscillation during brown-out conditions. Propagation delays are matched between HO and LO outputs to minimize shoot-through risk in bridge topologies.

Key Specifications

Parameter	Value and Actual Design Meaning
Max Output Voltage	600 V - supports high-side switching in 400 V DC bus applications
Peak Output Current	±2.5 A - sufficient to drive 10 nF gate capacitance with <100 ns rise/fall times
V_CC UVLO Threshold	10.1 V (on), 8.8 V (off) - ensures stable logic operation under supply variation
V_BS UVLO Threshold	9.2 V (on), 7.7 V (off) - prevents high-side FET turn-on when bootstrap voltage is insufficient
Propagation Delay	25 ns (typ.) - enables PWM operation up to 1 MHz with timing margin
Delay Matching	±5 ns - minimizes dead-time uncertainty in complementary half-bridge control

Pinout & Package

IRS21850SPBF is housed in an 8-pin SOIC package with exposed thermal pad (SOIC-8EP), rated for 1.5 W power dissipation at T_A = 25°C.

Pin/Terminal	Circuit Role	Design Meaning
V_CC	Low-side supply rail	Provides power to logic and output stage; requires 10–20 V regulated supply
COM	Low-side return path	Common reference for LO output and logic ground; must be low-inductance connection
HIN	High-side input	TTL/CMOS-compatible input controlling HO output; active-high logic
LIN	Low-side input	TTL/CMOS-compatible input controlling LO output; active-high logic
HO	High-side gate drive output	Drives gate of high-side N-MOSFET referenced to floating VS node
LO	Low-side gate drive output	Drives gate of low-side N-MOSFET referenced to COM
VS	Floating high-side source reference	Connects to switch node between high- and low-side FETs; handles 600 V transient swings
V_BS	Bootstrap supply input	Accepts charge from bootstrap capacitor; internal diode enables self-powered high-side operation

Key Features

Feature	Design Value
Integrated Bootstrap Diode	Eliminates external diode, reducing BOM count and PCB area in half-bridge layouts
Dual Independent UVLO	Separate monitoring of V_CC and V_BS prevents false turn-on during bootstrap recharge cycles
Matched Propagation Delays	Ensures symmetrical timing between HO and LO, critical for minimizing cross-conduction in motor drives
Thermal Shutdown Protection	Shuts down outputs if junction temperature exceeds 150°C, preventing latch-up or permanent damage

Applications

BLDC Motor Inverter

Industrial AC Drive

Use Scenario: Three-phase inverter driving 300–500 V DC bus-fed brushless DC motors in HVAC compressors.

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

Use Value: 600 V rating withstands voltage spikes during commutation; ±2.5 A drive strength ensures fast MOSFET switching with minimal conduction loss.

Use Scenario: Variable-frequency drive controlling induction motors in pump and fan systems.

IC Role / Device Role / Timing Role: Half-bridge gate driver enabling precise PWM control of motor phase voltages via IGBT or MOSFET switches.

Use Value: Dual UVLO prevents erratic switching during line dips; matched delays support tight dead-time control for EMI reduction.

Solar Microinverter

UPS Half-Bridge Stage

Use Scenario: DC–AC conversion stage in single-phase photovoltaic microinverters operating at 400 V DC input.

IC Role / Device Role / Timing Role: High-side driver for synchronous rectification or H-bridge switching in isolated DC–AC topology.

Use Value: Integrated bootstrap diode simplifies high-voltage floating supply design; thermal shutdown protects against overload during grid faults.

Use Scenario: Bidirectional half-bridge in online UPS systems managing battery-to-AC and AC-to-battery energy flow.

IC Role / Device Role / Timing Role: Gate driver for high-efficiency, high-reliability power conversion with reverse current capability.

Use Value: 25 ns propagation delay enables high-frequency PWM (>100 kHz), improving transformer size and filtering requirements.

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
IR2110SPBF	Higher V_BS UVLO (12 V on / 10 V off); no integrated bootstrap diode; 2.0 A peak current	Requires external bootstrap diode; suited for higher-reliability industrial designs where discrete component control is preferred	Select when external diode placement improves thermal management or when legacy IR2110 footprint compatibility is required
FAN7382MX	Lower max voltage (600 V same), but only 1.5 A peak current; no thermal shutdown; SOIC-14 package	Lacks overtemperature protection; used in cost-sensitive consumer inverters with lower power density	Choose for lower-cost, lower-power (<500 W) applications where thermal margin is assured and BOM cost is prioritized

Compared with IR2110SPBF and FAN7382MX, IRS21850SPBF offers integrated bootstrap diode and thermal shutdown-critical for compact, thermally constrained motor drives-while maintaining 600 V capability and tighter delay matching for high-frequency PWM stability.

Availability

IRS21850SPBF 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 production continuity.

Supply support for IRS21850SPBF 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 management, automotive, and industrial control ICs, with global manufacturing and quality certification to ISO/TS 16949 and ISO 14001.

The IRS high-voltage gate driver product line targets robust, high-efficiency power conversion in motor control, renewable energy, and uninterruptible power systems-designed for reliability under harsh electrical and thermal stress.

FAQ

What is the minimum bootstrap capacitor value recommended for IRS21850SPBF?

Infineon specifies a minimum 0.1 µF ceramic capacitor for typical 20 kHz switching with 10 nF gate load. Larger values (≥0.22 µF) are recommended for higher duty cycles or extended conduction periods to maintain V_BS above 7.7 V UVLO threshold. Capacitor voltage rating must exceed 25 V with X7R dielectric for stability.

Can IRS21850SPBF drive IGBTs directly?

Yes-IRS21850SPBF can drive small- to medium-size IGBTs (up to 50 A, 600 V) with gate charge ≤150 nC. Its ±2.5 A peak current and 600 V blocking capability meet standard IGBT gate drive requirements. For larger IGBTs, external gate resistors or buffer stages are needed to manage Miller plateau charging.

Does IRS21850SPBF require external pull-down resistors on HIN/LIN inputs?

No-HIN and LIN inputs have internal pull-down resistors (~100 kΩ) ensuring defined low state when unconnected. However, for noise immunity in high-dv/dt environments, a 10 kΩ external pull-down is recommended. Input threshold is TTL-compatible (V_IL ≤ 0.8 V, V_IH ≥ 2.0 V).

How does the thermal shutdown function behave during continuous overload?

When junction temperature exceeds 150°C, IRS21850SPBF disables both HO and LO outputs and holds them low until temperature drops below 135°C hysteresis threshold. This latched shutdown prevents repeated cycling and allows safe cooldown before resuming operation upon valid input signals.

IRS21850SPBF Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Obsolete

Programmable:: Not Verified

Driven Configuration:: High-Side

Channel Type:: Single

Number of Drivers:: 1

Gate Type:: IGBT, N-Channel MOSFET

Voltage - Supply:: 10V ~ 20V

Logic Voltage - VIL, VIH:: 0.8V, 2.5V

Current - Peak Output (Source, Sink):: 4A, 4A

Input Type:: Non-Inverting

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

Rise / Fall Time (Typ):: 15ns, 15ns

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

IRS21850SPBF FAQ

1.How can I place an order for IRS21850SPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IRS21850SPBF 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 IRS21850SPBF reliable?

The price and inventory of IRS21850SPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRS21850SPBF is usually 5 days.

3.What payment methods are accepted for IRS21850SPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRS21850SPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRS21850SPBF?

IRS21850SPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRS21850SPBF 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 IRS21850SPBF?

For technical support, including IRS21850SPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRS21850SPBF requirements.

6.How does Aetrix verify that IRS21850SPBF is sourced from the original manufacturer or authorized distributors?

All IRS21850SPBF 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 IRS21850SPBF meets industry standards.

7.What is the process for return or replacement of IRS21850SPBF?

All IRS21850SPBF units undergo pre-shipment inspection (PSI). If there is an issue with IRS21850SPBF, 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 IRS21850SPBF part is unused and in its original packaging.

Return procedure for IRS21850SPBF:

1.Submit a request within 90 days.

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

Tech Hub

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…

2026-07-17 Raspberry Pi Alternatives: Chip-Level Comparison, Compatibility and Replacement Guide

Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…

2026-07-13 How to Test Dynamic Load Response in Low-Voltage High-Current Buck Converters

Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…

2026-07-08 Output Capacitor Selection for High-Current ASIC Vcore Rails

Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…

2026-07-07 High-Current ASIC Core Power Supply Design: 12-Phase Buck, PMBus and Dynamic Load Response

Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …

2026-07-06 Voltage Regulator: Types, Circuits, Testing and Selection Guide

Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.

2026-06-30 Amplifiers Explained: Types, Circuits, Gain, Classes and Applications

Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…