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IR2112S
+BOMIC GATE DRVR HI/LOW SIDE 16SOIC
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Nhà sản xuấtCông nghệ Infineon
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Ông. Phần #IR2112S
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Bảng dữ liệu IR2112S DataSheet
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Thông số kỹ thuật
| thuộc tính | Giá trị |
| 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 |
Tổng quan
Description
Key points
- Inputs: HIN and LIN (logic levels, TTL/CMOS compatible)
- Supplies: Vcc (10–20 V) for logic; VB–VS powers the high-side gate driver; VS is the switching node; COM is ground
- High-side up to ~600 V; low-side also up to that range
- Bootstrap circuit: requires a diode and capacitor to recharge when the low side is on
- Protections: undervoltage lockout on Vcc and VB–VS
- Package: S suffix denotes surface-mount version (8-pin)
Usage notes
- Not a standalone controller; ensure proper bootstrap sizing, decoupling, and wiring
- Must provide dead-time externally
- Bootstrap can’t sustain 100% duty cycle; VS must go low to recharge the bootstrap cap
Applications: motor drives, inverters, switching power supplies, Class-D amplifiers.
Equivalent
- TI: UCC27201A/UCC27202A
- Onsemi: FAN7392, FAN7390
- Intersil/Renesas: HIP2100/HIP2101
- Renesas: ISL9xxx bootstrap gate-driver family
They offer similar half-bridge driving with bootstrap. Check exact voltages, current, and pinout in datasheets.
Features
- High-voltage dual driver for half-bridge: up to 600 V, with independent high-side (HO) and low-side (LO) outputs
- Bootstrap high-side drive: VB–VS floats with VS; requires external bootstrap diode and capacitor
- Vcc supply 10–20 V (typical 12 V); TTL/CMOS-compatible HIN/LIN inputs; HO/LO drive gates of N-channel MOSFETs/IGBTs
- Undervoltage protection: UVLO on Vcc and VB–VS to prevent false turn-on
- High peak gate drive currents for fast switching; suitable for rapid turn-on/turn-off
- Isolation between high- and low-side logic; designed for high-side switching applications
- Package: S suffix (16-pin SOIC)
- Applications: motor drives, DC-DC converters, inverters, half-bridge driver circuits
Note: Bootstrap operation requires external components; no internal dead-time generation (external logic needed for safe operation).
Pinout
Function: IR2112S is a high-voltage, high-speed driver for a two-transistor half-bridge. It provides independent high-side and low-side gate drives:
- Inputs: HIN and LIN
- Outputs: HO (high-side gate) and LO (low-side gate)
- Floating supply for high-side: VB and VS (bootstrapped)
- Logic supply and return: VCC and COM
- Bootstrap capacitor (between VB and VS) and external bootstrap diode required
It also includes UVLO protection for reliable operation.
Manufacturer
What kind of company: A German multinational semiconductor company that designs and manufactures power semiconductors, sensors, microcontrollers, and system solutions for automotive, industrial, and consumer markets.
Application
Typical applications:
- Half-bridge stages in switching power supplies (buck/boost/buck-boost) and DC–DC converters
- DC–DC motor-drive front ends
- DC–AC inverters (motor drives, solar/renewables inverters, UPS)
- Any high-side switching circuit requiring bootstrapped gate drive with a common low-side controller
Frequently Asked Questions
Q: What are the key application scenarios for the IR2112S?
A: It is ideal for high-voltage, half-bridge, and full-bridge converter topologies in motor drives, SMPS, and DC-DC converters requiring bootstrap operation up to 600V.
Q: What is the maximum bootstrap voltage rating for the high-side driver?
A: The high-side absolute maximum bootstrap voltage is 600V, enabling direct driving of N-channel MOSFETs or IGBTs in high-voltage rails.
Q: Can the IR2112S drive both high-side and low-side switches independently?
A: Yes, it features two independent, non-inverting channels for high-side and low-side gate drive, with a 250mA source and 500mA sink peak current capability.
Q: What is the typical rise and fall time performance for this gate driver?
A: Typical rise time is 80ns and fall time is 40ns, ensuring fast switching transitions for efficient power conversion.
Q: What supply voltage range is required to operate the IR2112S?
A: The supply voltage (VCC) must be between 10V and 20V for proper operation of the internal logic and output stages.
Q: What are the input logic threshold voltages for this driver?
A: Logic low (VIL) is 6V max, and logic high (VIH) is 9.5V min, compatible with standard 5V and 15V logic levels when using appropriate supply voltages.
