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IR2112S

Name: IR2112S
Rating: 4.7 (12 reviews)

IC GATE DRVR HI/LOW SIDE 16SOIC

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規格

Part Status	Obsolete
Base Product Number	IR2112
DigiKey Programmable	Not Verified
Driven Configuration	High-Side, Low-Side
Channel Type	Independent
Number of Drivers	2
Gate Type	IGBT, MOSFET (N-Channel)
Voltage - Supply	10V ~ 20V
Logic Voltage - VIL, VIH	6V, 9.5V
Current - Peak Output (Source, Sink)	250mA, 500mA
Input Type	Non-Inverting
High Side Voltage - Max (Bootstrap)	600 V
Rise / Fall Time (Typ)	80ns, 40ns
Operating Temperature	-40°C ~ 150°C (TJ)
Mounting Type	Surface Mount
Package	16-SOIC (0.295", 7.50mm Width)
Supplier Device Package	16-SOIC
Packaging	Tube

概述

Description

IR2112S is a high-/low-side gate driver for N‑channel MOSFETs in half‑bridge applications. It provides two outputs: HO (high-side) and LO (low-side), driven from independent inputs (HIN and LIN). A bootstrap circuit powers the high-side driver: a bootstrap capacitor VB–VS charged from VCC via a diode when VS is low, allowing HO to drive the high-side gate above VS by about 10–12 V. Key specs: up to the high‑side supply voltage VB–VS (typically up to ~600 V), VCC around 10–20 V, and UVLO protection on both VCC and VB–VS. It also includes a shutdown input (SD) to disable both outputs and prevents cross-conduction.
Usage notes: mount close decoupling on VCC/COM, choose a bootstrap capacitor large enough for the on-time, use a fast bootstrap diode, and ensure VS is refreshed (pulled low) periodically. Suitable for motor drives, inverters, and SMPS half-bridges. The S suffix indicates the surface-mount version of the IR2112 family.

Features

Key features of IR2112S:
- High-voltage, high-speed driver for N-channel MOSFETs/IGBTs with independent high-side (HO) and low-side (LO) outputs.
- Up to 600 V vulnerable high-side supply (VS) with bootstrap operation (VB–VS) for HO drive.
- VCC supply typically 10–20 V; TTL/CMOS-compatible input thresholds.
- Gate-drive capability: approximately 2 A peak current (source/sink) for fast switching.
- UVLO protection on both VCC and VB to prevent undefined operation; outputs stay off when undervoltage.
- Input pins: HIN, LIN, and SD (shutdown) to control both outputs; SD forces both HO/LO low.
- Outputs referenced as HO to VS and LO to COM; suitable for bootstrap half-bridge configurations.
- Requires external bootstrap diode and capacitor; bootstrap recharges when VS is pulled low.
- Internal protection and robust operation suitable for high-speed switching.
- Available in common packages (e.g., SOIC/DIP).

Package

8-pin surface-mount, SOIC package (SO-8). The “S” suffix indicates SOIC.

Pinout

- Pin count: 14 pins (DIP-14/SO-14 package).
- Function: IR2112S is a high-voltage, high-speed dual driver for N-channel MOSFETs in a half-bridge. It provides independent high-side and low-side gate drive: HO for the high-side gate and LO for the low-side gate. It uses a bootstrap circuit (VB to VS) to power the high-side driver; VS is the switch node. Pins include HIN/LIN (logic inputs), VB/VS/VCC/COM (power and references), HO/LO (gate outputs). Some variants also feature a shutdown input to disable outputs.

Manufacturer

- Manufacturer: International Rectifier (IR).
- What kind of company: A semiconductor company specializing in power management devices (power MOSFETs, IGBTs, gate drivers, etc.). IR is now a brand of Infineon Technologies after an acquisition (Infineon acquired IR in 2015).

Application

IR2112S is a high-voltage, high-speed dual gate driver for N‑channel MOSFETs in a bootstrapped half‑bridge. Common applications:
- Half‑bridge drives in switch‑mode power supplies (offline/ DC‑DC)
- Motor drives (DC/BLDC/stepper) and inverters
- Class‑D audio amplifiers
- Solar inverters, UPS, energy‑storage converters
- Automotive power electronics

Equivalent

Equivalent products are other bootstrapped high-side/low-side gate drivers. Common replacements:
- IR family: IR2110/IR2113/IR2184 (direct cross)
- Texas Instruments: UCC27200/UCC27201/UCC27204/UCC27324
- ON Semiconductor: FAN7392A (and FAN7390)
- STMicroelectronics: L6985/L6986
- Microchip/others: HV9910/HV9930
Note: pinouts, Vcc, bootstrap timing, and voltage ratings differ—verify cross-reference and specs before substituting.