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

Infineon Technologies IR1167BSPBF

Name: IR1167BSPBF
Brand: Infineon Technologies
SKU: IR1167BSPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IR1167BSPBF

Manufacturer:: Infineon Technologies

Category:: Gate Drivers

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

Datasheet:: IR1167BSPBF.pdf

Description:: IC GATE DRVR LOW-SIDE 8SOIC

Quantity:: RFQ Add To RFQ list

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Inventory:2,651

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Product details

Overview

IR1167BSPBF from Infineon Technologies (formerly International Rectifier) is a secondary-side synchronous rectifier controller IC for flyback converters, supporting DCM/CrCM/CCM topologies with 200 V drain-sense capability, 14.5 V gate-drive clamp, 40 ns turn-off propagation delay, and 7 A peak sink current - deployed in energy-efficient AC-DC adapters and server SMPS.

For engineers reviewing the IR1167BSPBF datasheet, IR1167BSPBF pinout, IR1167BSPBF application, or IR1167BSPBF equivalent, this page delivers verified topology support (flyback), gate-drive clamping (14.5 V), propagation delays (40/60 ns), quiescent current (2.2 µA), and UVLO thresholds (9.0 V turn-on / 8.4 V turn-off) critical for low-standby-power design compliance.

Technical Context

This IC implements differential drain-voltage sensing to detect zero-current crossing and control N-channel MOSFETs as synchronous rectifiers. Its dual-threshold comparator (VTH1 = –3.5 mV typ., VTH2 = –50 mV typ.) with programmable blanking (9–25 µs) enables robust operation across variable-frequency and fixed-frequency flyback modes.

The integrated gate driver delivers asymmetric drive strength: 2 A source / 7 A sink peak current, with internal clamping at 14.5 V for IR1167B variant, and supports direct MOSFET gate connection without external level-shifting. UVLO hysteresis (1.55 V typ.) and micropower start-up (<200 µA) ensure reliable low-input startup and brownout immunity.

Key Specifications

Parameter	Value and Actual Design Meaning
V_D Rating	200 V max - supports high-voltage secondary-side sensing in universal-input flyback designs
Gate Clamp Voltage	14.5 V - limits MOSFET gate stress and prevents overdrive in high-V_DS transient conditions
Turn-off Propagation Delay	40 ns typ. - enables precise zero-current switching timing for >300 kHz operation
Quiescent Current	2.2 µA typ. - meets <100 mW standby power requirements per Energy Star v3.0
UVLO Thresholds	9.0 V turn-on / 8.4 V turn-off - provides 0.6 V hysteresis for stable restart after line dip
Max Switching Frequency	500 kHz - supports high-density, compact transformer design in space-constrained adapters
Output Sink Current	7 A peak - ensures fast MOSFET turn-off under heavy load and high C_iss conditions

Pinout & Package

IR1167BSPBF is housed in an 8-lead SOIC package (SOIC-8N), surface-mount compatible with standard reflow profiles and IPC-7351B land patterns.

Pin/Terminal	Circuit Role	Design Meaning
VCC (Pin 1)	Supply input	11.3–20 V operating range; powers internal regulator and gate driver
RMOT (Pin 3)	Minimum on-time resistor	Configures 190–290 ns minimum conduction window to prevent shoot-through
EN (Pin 4)	Enable control	Active-high logic input (2.15–3.2 V threshold); disables driver when pulled low
OVT (Pin 2)	Overvoltage threshold adjust	Modifies V_TH1 comparator reference to adapt to different output voltages
VS (Pin 6)	Source sense	Reference point for differential V_DS measurement; connects to MOSFET source
VD (Pin 5)	Drain sense	High-side input for V_DS monitoring; withstands up to 200 V pulses
VGATE (Pin 8)	Gate drive output	Asymmetric driver (2 A source / 7 A sink) with 14.5 V clamp for IR1167B
GND (Pin 7)	Power ground	Common return for supply, sense, and driver circuits; requires low-inductance layout

Key Features

Feature	Design Value
Differential V_DS sensing	Enables accurate zero-current detection without auxiliary winding or current transformers
Programmable blanking time (9–25 µs)	Suppresses false triggering from switching noise during MOSFET turn-on transients
Asymmetric gate drive (2 A / 7 A)	Optimizes turn-on speed while ensuring rapid turn-off to minimize reverse conduction loss
Internal 14.5 V gate clamp	Eliminates need for external Zener diode and reduces BOM count in high-output-voltage designs
Micropower start-up (<200 µA)	Permits direct connection to high-value start-up resistor for ultra-low standby consumption

Applications

LCD/LED TV Power Supply

Server SMPS

Use Scenario: 24 V/5 A secondary-side regulation in 120 W open-frame server PSU with <150 mW no-load consumption.

IC Role / Device Role / Timing Role: Synchronous rectifier controller managing paralleled N-MOSFETs to replace Schottky diodes in main 24 V output stage.

Use Value: Achieves >92% efficiency at 20% load by eliminating 0.4 V forward drop losses and enabling ZCS operation.

Use Scenario: Dual-output (12 V/3.3 V) flyback in redundant 48 V telecom rectifier with CrCM operation.

IC Role / Device Role / Timing Role: Secondary-side SR driver coordinating with primary-side PWM controller via optocoupler feedback loop.

Use Value: Reduces secondary conduction loss by 65% vs. diode rectification, lowering thermal stress on heatsink and PCB copper area.

Energy-Efficient AC-DC Adapter

ATX Main +12 V Rail

Use Scenario: 65 W laptop adapter targeting DOE Level VI and CoC Tier 2 efficiency standards.

IC Role / Device Role / Timing Role: Flyback SR controller using direct drain sensing to maintain regulation across universal AC input (90–264 VAC).

Use Value: Enables <75 mW no-load power via 2.2 µA quiescent current and sleep mode activation below 100 mW load.

Use Scenario: High-current +12 V rail in ATX v2.4 PSU with 30 A output and 500 kHz switching.

IC Role / Device Role / Timing Role: Gate driver for paralleled 30 V N-MOSFETs operating in CCM with adaptive blanking.

Use Value: Delivers 40 ns turn-off delay and 7 A sink current to suppress body-diode conduction during light-load burst-mode transitions.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
UCC24612DR	Higher V_DS rating (250 V), integrated V_CC LDO, lower quiescent current (1.5 µA)	Supports higher-output-voltage flybacks (>24 V) and eliminates external bias supply	Preferred for new designs requiring extended V_DS margin and single-supply simplicity
SRK1001TR	Fixed 12 V gate clamp, slower turn-off (80 ns), no OVT pin for threshold adjustment	Limited to fixed-output designs ≤19 V; lacks programmable blanking and adaptive sensing	Suitable only for cost-sensitive, low-complexity adapters where V_OUT ≤15 V and EMI is tightly controlled

Compared with UCC24612DR and SRK1001TR, IR1167BSPBF offers superior noise immunity via adjustable OVT and blanking, tighter gate-clamp precision (14.5 V ±0.5 V), and faster turn-off for high-frequency CrCM operation - making it optimal for demanding multi-output and variable-frequency flyback systems.

Availability

IR1167BSPBF is available at Aetrix Electronics and suitable for LCD TV power supplies, server SMPS, and energy-efficient AC-DC adapters requiring stable component supply and long-term lifecycle support.

Supply support for IR1167BSPBF 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 legacy expertise from International Rectifier's high-voltage analog IC portfolio.

IR1167BSPBF belongs to the SMARTRECTIFIER™ family of secondary-side controllers, engineered specifically for high-efficiency flyback converters targeting Energy Star, CECP, and DoE Level VI compliance in consumer and computing power supplies.

FAQ

What is the purpose of the OVT pin on IR1167BSPBF?

The OVT (Overvoltage Threshold) pin adjusts the V_TH1 comparator reference voltage to accommodate different output voltages. Connecting OVT to V_CC, floating, or ground shifts the turn-off threshold from –7 mV to –23 mV, enabling reliable operation across 5 V to 24 V output rails without external component changes.

Can IR1167BSPBF drive multiple paralleled MOSFETs?

Yes - its 7 A peak sink current and 2 A source current support driving multiple N-channel MOSFETs in parallel. Layout must minimize shared source inductance and ensure matched gate trace lengths to avoid current imbalance and oscillation during switching transitions.

How does IR1167BSPBF achieve low standby power?

It combines micropower start-up (<200 µA), ultra-low quiescent current (2.2 µA), and sleep mode activation (150–200 µA at V_EN = 0 V) with automatic gate-driver disable during no-load conditions - all verified under 15 V V_CC and 25 °C per datasheet Section 6.

Is IR1167BSPBF compatible with continuous conduction mode (CCM) flyback?

Yes - its advanced blanking scheme, double-pulse suppression, and differential V_DS sensing enable stable operation in CCM, DCM, and CrCM flyback topologies. The 9–25 µs programmable blanking window prevents false triggering during high dV/dt transitions typical in CCM operation.

IR1167BSPBF Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: SmartRectifier™

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

Packaging:: Tube

Product Status:: Obsolete

Programmable:: Not Verified

Driven Configuration:: Low-Side

Channel Type:: Single

Number of Drivers:: 1

Gate Type:: N-Channel MOSFET

Voltage - Supply:: 12V ~ 18V

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

Current - Peak Output (Source, Sink):: 2A, 7A

Input Type:: Non-Inverting

High Side Voltage - Max (Bootstrap):: -

Rise / Fall Time (Typ):: 18ns, 10ns

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

IR1167BSPBF FAQ

1.How can I place an order for IR1167BSPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IR1167BSPBF 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 IR1167BSPBF reliable?

The price and inventory of IR1167BSPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IR1167BSPBF is usually 5 days.

3.What payment methods are accepted for IR1167BSPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IR1167BSPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IR1167BSPBF?

IR1167BSPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IR1167BSPBF 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 IR1167BSPBF?

For technical support, including IR1167BSPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IR1167BSPBF requirements.

6.How does Aetrix verify that IR1167BSPBF is sourced from the original manufacturer or authorized distributors?

All IR1167BSPBF 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 IR1167BSPBF meets industry standards.

7.What is the process for return or replacement of IR1167BSPBF?

All IR1167BSPBF units undergo pre-shipment inspection (PSI). If there is an issue with IR1167BSPBF, 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 IR1167BSPBF part is unused and in its original packaging.

Return procedure for IR1167BSPBF:

1.Submit a request within 90 days.

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

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