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UCC27517A-Q1 Datasheet(PDF) 10 Page - Texas Instruments |
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UCC27517A-Q1 Datasheet(HTML) 10 Page - Texas Instruments |
10 / 31 page UCC27517A-Q1 SLVSC88B – AUGUST 2013 – REVISED AUGUST 2015 www.ti.com 9 Detailed Description 9.1 Overview The UCC2751xA-Q1 single-channel, high-speed, low-side gate-driver device is capable of effectively driving MOSFET and IGBT power switches. Using a design that inherently minimizes shoot-through current, the UCC2751x device is capable of sourcing and sinking high peak-current pulses into capacitive loads offering rail- to-rail drive capability and extremely small propagation delay of 13 ns (typical). The UCC2751xA-Q1 family of devices provides 4-A source, 4-A sink (symmetrical drive) peak-drive current capability. The device is designed to operate over a wide VDD range of 4.5 to 18 V, and a wide temperature range of –40°C to 140°C. Internal undervoltage lockout (UVLO) circuitry on the VDD pin holds the output low outside VDD operating range. The capability to operate at low voltage levels, such as below 5 V, along with best-in- class switching characteristics, is especially suited for driving emerging wide bandgap power-switching devices such as GaN power- semiconductor devices. The UCC27511A-Q1 device features a dual-input design which offers flexibility of implementing both inverting (IN– pin) and non-inverting (IN+ pin) configuration with the same device. Either the IN+ or IN– pin can be used to control the state of the driver output. The unused input pin can be used for enable and disable functions. For system robustness, internal pull-up and pull-down resistors on the input pins ensure that outputs are held low when the input pins are in floating condition. Therefore the unused input pin is not left floating and must be properly biased to ensure that driver output is in enabled for normal operation. The input pin threshold of the UCC27517A-Q1 device is based on TTL and CMOS-compatible low-voltage logic which is fixed and independent of the VDD supply voltage. Wide hysteresis between the high and low thresholds offers excellent noise immunity. Table 2. UCC27517A-Q1 Summary PEAK CURRENT (SOURCE, PART NUMBER PACKAGE INPUT THRESHOLD LOGIC SINK) CMOS and TTL-Compatible 4-A, 4-A UCC27517ADBVQ1 SOT-23, 5 pin (low voltage, independent of VDD (Symmetrical Drive) bias voltage) Table 3. UCC27517A-Q1 Features and Benefits FEATURE BENEFIT High current capability offers flexibility in employing the UCC27517A- High Source, Sink Current Capability 4 A, 4 A (Symmetrical) Q1 to drive a variety of power switching devices at varying speeds Best-in-class 13-ns (typ) Propagation delay Extremely low-pulse transmission distortion Expanded VDD Operating range of 4.5 V to 18 V Flexibility in system design Low VDD operation ensures compatibility with emerging wide- Expanded Operating Temperature range of –40°C to 140°C bandgap power devices such as GaN (See Recommended Operating Conditions table) Outputs are held low in UVLO condition, which ensures predictable VDD UVLO Protection glitch-free operation at power up and power down Protection feature, especially useful in passing abnormal condition Outputs held low when input pins (INx) in floating condition tests during protection certification Ability of input pins to handle voltage levels not restricted by VDD pin System simplification, especially related to auxiliary bias supply bias voltage architecture Enhanced noise immunity, while retaining compatibility with CMOS and TTL compatible input threshold logic with wide hysteresis microcontroller logic-level input signals (3.3 V, 5 V) optimized for in UCC27517A-Q1 digital power Ability to handle –5 VDC at input pins Increased robustness in noisy envirnments 10 Submit Documentation Feedback Copyright © 2013–2015, Texas Instruments Incorporated Product Folder Links: UCC27517A-Q1 |
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