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 IR11662SPBF

Name: IR11662SPBF
Brand: Infineon Technologies
SKU: IR11662SPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: IR11662SPBF

Manufacturer:: Infineon Technologies

Category:: Gate Drivers

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

Datasheet:: IR11662SPBF.pdf

Description:: IC GATE DRVR LOW-SIDE 8SOIC

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:1,524

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

Product details

Overview

IR11662SPBF from Infineon Technologies (formerly International Rectifier) is a secondary-side synchronous rectifier controller IC for flyback and resonant half-bridge AC-DC converters, featuring 200 V drain-sense capability, 50 ns turn-off propagation delay, 4 A peak sink current, 10.7 V gate drive clamp, and cycle-by-cycle MOT protection. It drives N-channel MOSFETs to replace Schottky diodes in high-efficiency adapters and server SMPS.

For engineers reviewing the IR11662SPBF datasheet, IR11662SPBF pinout, IR11662SPBF application, or IR11662SPBF equivalent, key selection factors include its differential V_DS-sensing architecture, ultra-low quiescent current (2.2 µA), 11.4–18 V V_CC operating range, anti-bounce logic, and compatibility with Energy Star and CECP standby requirements.

Technical Context

The IR11662SPBF implements a zero-current-transition (ZCT)-based control scheme using differential sensing of MOSFET drain-to-source voltage to determine conduction polarity and timing. Its internal comparator thresholds (V_TH1 = –3.5 mV typ., V_TH2 = –50 mV typ.) and 8–24 µs programmable blanking window enable robust noise immunity in high-dV/dt environments.

It integrates a cycle-by-cycle MOT (Minimum On-Time) check circuit that disables gate drive under no-load or light-load conditions to prevent reverse current flow, and features micropower start-up (100–200 µA) with ultra-low sleep current (150–200 µA at V_EN = 0 V).

Key Specifications

Parameter	Value and Actual Design Meaning
V_D Rating	200 V max - supports primary-side-referred secondary rectification in 19 V–24 V output, 100–200 W flyback designs
Gate Drive Clamp	10.7 V - limits gate overvoltage during fast switching, protecting N-MOSFET gate oxide
Turn-off Propagation Delay	50 ns typ. - enables precise ZCT timing at up to 500 kHz switching frequency
I_O(sink)	4 A peak - ensures rapid MOSFET turn-off under high C_iss loads (e.g., paralleled 5–10 mΩ devices)
V_CC Operating Range	11.4–18 V - compatible with auxiliary winding-derived bias supplies without external LDO
Quiescent Current	2.2 µA typ. - meets <0.3 W no-load standby power targets per Energy Star v3.0
Min. On-Time Control	180–300 ns - prevents shoot-through in CrCM operation via RMOT resistor programming (5–75 kΩ)

Pinout & Package

IR11662SPBF is housed in an 8-lead SOIC package (SOIC-8N, body width 3.9 mm, JEDEC MS-012), optimized for thermal dissipation in high-density adapter PCB layouts.

Pin/Terminal	Circuit Role	Design Meaning
VCC (Pin 1)	Supply input	Power rail for internal regulator and gate driver; UVLO threshold 10.55 V (turn-on), 9 V (turn-off)
VD (Pin 5)	Drain sense input	Differential high-side voltage monitor; accepts –1 V to +200 V with 100 ns negative spike tolerance
VS (Pin 6)	Source sense input	Reference node for V_DS measurement; supports –3 V common-mode range
MOT (Pin 3)	Minimum on-time timing	RC-set node defining minimum gate-on duration; 5–75 kΩ resistor sets 180–300 ns range
OVT (Pin 2)	Over-voltage threshold adjust	Configures comparator hysteresis and blanking sensitivity; floating = –10.5 mV V_TH1
EN (Pin 4)	Enable control	Active-high logic input; 2.15–3.2 V high threshold ensures noise-immune disable during brown-out
GND (Pin 7)	Signal and power ground	Common reference for all analog and digital sections; requires low-inductance layout to V_S
VGATE (Pin 8)	Gate driver output	Push-pull output with 1 A source / 4 A sink; clamped to 10.7 V to prevent gate overstress

Key Features

Feature	Design Value
Differential V_DS sensing	Enables accurate zero-current detection across wide temperature and load ranges without current shunts
Cycle-by-cycle MOT protection	Prevents false triggering and reverse conduction during light/no-load by dynamically disabling gate drive
Programmable blanking window (8–24 µs)	Suppresses dV/dt-induced false triggers during MOSFET switching transitions
Ultra-low quiescent current (2.2 µA)	Eliminates need for auxiliary supply shutdown circuitry in sub-0.3 W standby designs
Integrated 10.7 V gate clamp	Removes requirement for external Zener clamp, reducing BOM count and layout area

Applications

LCD/LED TV Power Supply

Telecom AC-DC Adapter

Use Scenario: 24 V/5 A isolated flyback converter powering main board and backlight in 32–55″ LCD TVs.

IC Role / Device Role / Timing Role: Secondary-side SR controller synchronizing N-MOSFET turn-on/off with transformer demagnetization zero-crossing.

Use Value: Achieves >92% full-load efficiency and <0.25 W no-load consumption, meeting Energy Star 6.0 requirements.

Use Scenario: 12 V/3 A resonant half-bridge adapter for telecom base station management modules.

IC Role / Device Role / Timing Role: High-speed gate driver enabling ZCT-based synchronous rectification at 350 kHz switching frequency.

Use Value: Reduces secondary-side conduction loss by 45% vs. Schottky diode, lowering thermal stress on heatsink.

Server ATX PSU +12 V Rail

USB-C PD Fast Charger

Use Scenario: Multi-output forward/flyback hybrid PSU delivering +12 V@30 A to server motherboard VRMs.

IC Role / Device Role / Timing Role: Dual-MOSFET parallel drive controller with MOT-based load detection for adaptive dead-time control.

Use Value: Enables 94.5% peak efficiency at 50% load while maintaining <0.3 W standby via sleep-mode current reduction.

Use Scenario: 20 V/5 A GaN-based flyback charger supporting USB-C PD 3.0 PPS profiles.

IC Role / Device Role / Timing Role: Fast-propagation (50 ns t_Doff) SR controller interfacing with GaN FET's low Q_g and high dV/dt.

Use Value: Maintains tight ZCT alignment despite 100 V/ns dV/dt transients, eliminating shoot-through risk.

Equivalent & Alternatives

The following parts are listed as comparable options for similar secondary-side synchronous rectifier controller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor NCP4306DR2G	Lower V_D rating (100 V), fixed 30 ns t_Doff, no MOT protection	Targeted at ≤12 V output adapters; lacks cycle-by-cycle no-load disable	Preferred for cost-sensitive, low-output-voltage (<15 V), fixed-frequency flyback designs
Diodes Incorporated AP4313KTR-G1	200 V V_D, 65 ns t_Doff, includes adaptive dead-time control but no programmable blanking	Optimized for CrCM flyback with variable frequency; less robust in high-noise telecom environments	Selected when design prioritizes frequency agility over dV/dt noise immunity in medium-power adapters

Compared with NCP4306DR2G and AP4313KTR-G1, IR11662SPBF uniquely combines 200 V robustness, 50 ns turn-off speed, programmable blanking, and MOT-based no-load protection-making it optimal for high-efficiency, high-noise, wide-input-range server and TV SMPS where reliability under transient conditions is critical.

Availability

IR11662SPBF is available at Aetrix Electronics and suitable for LCD TV power supplies, telecom AC-DC adapters, and server ATX SMPS requiring stable component supply, long-term lifecycle support, and lead-free compliance.

Supply support for IR11662SPBF 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 global semiconductor leader specializing in power management, automotive, and industrial control solutions, with core expertise in high-voltage analog and mixed-signal ICs.

The IR11662SPBF belongs to Infineon's SmartRectifier™ controller product line, engineered specifically for high-efficiency, low-standby-power AC-DC conversion in consumer and telecom power supplies.

FAQ

What topologies does the IR11662SPBF support?

The IR11662SPBF supports discontinuous conduction mode (DCM) and critical conduction mode (CrCM) flyback converters, as well as resonant half-bridge topologies. Its differential V_DS sensing and cycle-by-cycle MOT check enable reliable ZCT-based synchronous rectification across all three configurations without external current sensing.

How is the minimum on-time configured?

The minimum on-time is set externally via a resistor (RMOT) connected between Pin 3 (MOT) and GND. A 5–75 kΩ resistor programs the minimum gate-on duration from 180 ns to 300 ns, preventing false triggering during light-load CrCM operation while ensuring sufficient conduction time for ZCT alignment.

Does the IR11662SPBF require an external gate clamp?

No. The IR11662SPBF integrates an internal 10.7 V gate voltage clamp on the VGATE output (Pin 8), eliminating the need for an external Zener diode. This clamp activates during overvoltage events to protect the driven N-MOSFET's gate oxide, simplifying layout and reducing BOM count.

What is the function of the OVT pin?

The OVT (Over-Voltage Threshold) pin (Pin 2) adjusts the hysteresis and sensitivity of the internal comparator used for V_DS transition detection. When left floating, it sets V_TH1 to –10.5 mV; connecting it to V_CC or GND shifts the threshold to –15 mV or –3.5 mV respectively, allowing noise immunity tuning for specific transformer leakage and layout conditions.

IR11662SPBF Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: Advanced Smart Rectifier™

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

Packaging:: Tube

Product Status:: Discontinued at Digi-Key

Programmable:: Not Verified

Driven Configuration:: Low-Side

Channel Type:: Single

Number of Drivers:: 1

Gate Type:: N-Channel MOSFET

Voltage - Supply:: 11.4V ~ 18V

Logic Voltage - VIL, VIH:: 2V, 2.15V

Current - Peak Output (Source, Sink):: 1A, 4A

Input Type:: Non-Inverting

High Side Voltage - Max (Bootstrap):: -

Rise / Fall Time (Typ):: 21ns, 10ns

Operating Temperature:: -25°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

IR11662SPBF FAQ

1.How can I place an order for IR11662SPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IR11662SPBF 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 IR11662SPBF reliable?

The price and inventory of IR11662SPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IR11662SPBF is usually 5 days.

3.What payment methods are accepted for IR11662SPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IR11662SPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IR11662SPBF?

IR11662SPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IR11662SPBF 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 IR11662SPBF?

For technical support, including IR11662SPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IR11662SPBF requirements.

6.How does Aetrix verify that IR11662SPBF is sourced from the original manufacturer or authorized distributors?

All IR11662SPBF 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 IR11662SPBF meets industry standards.

7.What is the process for return or replacement of IR11662SPBF?

All IR11662SPBF units undergo pre-shipment inspection (PSI). If there is an issue with IR11662SPBF, 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 IR11662SPBF part is unused and in its original packaging.

Return procedure for IR11662SPBF:

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…