UCC27531 (ACTIVE) 2.5A, 5A, 40VMAX VDD FET, and IGBT single-gate drivers
The UCC27531 is a single-channel, high-speed, gate driver that efficiently drives MOSFETs and IGBT power switches with up to 2.5A source current and 5A sink current (asymmetric drive). Absorption capacity in the strong asymmetric drive increases resistance to parasitic Miller on-on effects. The UCC27531 device also features a separate output configuration in which the gate drive current is pulled from the OUTH pin and injected from the OUTL pin. This unique pin arrangement allows the user to sample independent on-on and off resistors on the OUTH and OUTL pins, respectively, and easily control the switch's slew rate.
This driver has rail-to-rail drive capability and a very small propagation delay of 17ns typical.
The input threshold for UCC27531DBV is based on a TTL and COMS-compatible low-voltage logic circuit that is fixed and independent of the VDD supply voltage. The 1V hysteresis typical provides excellent immunity.
This driver has an EN pin that supports a fixed TTL compatible threshold. EN is pulled up internally; Pulling down the EN to low disable the driver while leaving it on provides proper operation. The EN pin can be used as an additional input and performs the same as the IN pin.
Leaving the driver's input pin open will keep the output low. The logic of the drive is shown in the application diagram, the timing diagram, and the input and output logic truth table.
The internal circuitry on the VDD pins provides an undervoltage latching feature that keeps the output low until the VDD supply voltage is within the operating range.
UCC27531 drivers are available in a 6-pin standard SOT-23 (DBV) package. The device has a wide operating temperature range of -40°C to 140°C.
characteristic
- 低成本栅极驱动器（为驱动 FET 和 IGBT 的最佳解决方案）
- 离散晶体管对驱动的出色替代产品（提供与控制器的简便对接）
- TTL 和 CMOS 兼容输入逻辑阀值，（与电源电压无关）
- 分离输出可实现独立接通和关闭调整
- 由固定 TTL 兼容阀值启用
- 18V VDD 时的高 2.5A 源电流和 5A 灌峰值驱动电流
- 从 10V 到高达 35V 的宽 VDD 范围
- 能够耐受比接地最多低 5V 的直流 (DC) 电压的输入引脚
- 当输入悬空或 VDD 欠压闭锁 (UVLO) 期间，输出保持低电平
- 快速传播延迟（典型值 17ns）
- 快速上升和下降时间
（1800pF 负载时的典型值分别为 15ns 和 7ns）
- 欠压闭锁 (UVLO)
- 被用作高侧或低侧驱动器（如果采用适当的偏置和信号隔离设计）
- 低成本、节省空间的 6 引脚 DBV（小外形尺寸晶体管 (SOT)-23）封装
- 运行温度范围 -40°C 至 140°C
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Address: 13H, Block A, Huaqiang Plaza, Huaqiang Road, Futian District, Shenzhen
Phone: 0755-83591082
Fax: 0755-83591083
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