UCC2751x 单通道、高速、低侧栅极驱动器（具有 4A 峰值拉电流和 8A 峰值灌电流）

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1 特性

低成本栅极驱动器器件提供 NPN 和 PNP 离散解决方案的高品质替代米6体育平台手机版_好二三四
4A 峰值拉电流和 8A 峰值灌电流非对称驱动
强劲的灌电流提供增强的抗米勒接通效应性能
UCC27511 内部采用分离输出配置（便于单独调整接通和关断速度），节省了一个二极管
短暂传播延迟（典型值 13ns）
短暂上升和下降时间（典型值分别为 9ns 和 7ns）
4.5V 至 18V 单电源范围
VDD 欠压闭锁 (UVLO) 期间输出保持低电平（确保加电和断电时无毛刺脉冲运行）
晶体管逻辑 (TTL) 和互补金属氧化物半导体 (CMOS) 兼容输入逻辑阈值（与电源电压无关）
针对高抗扰度的滞后逻辑阈值
双输入设计（可选择反相（IN- 引脚）或非反相（IN+ 引脚）驱动器配置）
- 未使用的输入引脚可用于使能或禁用功能
当输入引脚悬空时，输出保持在低电平
输入引脚绝对最大电压电平不受 VDD 引脚偏置电源电压的限制
-40°C 至 140°C 的运行温度范围
6 引脚 DBV (SOT-23) 和 6 引脚 DRS（3mm x
3mm 带有外露散热焊盘的晶圆级小外形无引线 (WSON)）封装选项

2 应用

开关模式电源
DC-DC 转换器
用于数字电源控制器的伴随栅极驱动器器件
太阳能、电机控制、不间断电源 (UPS)
用于新上市的宽带隙电源器件（例如 GaN）的栅极驱动器

3 说明

UCC27511 和 UCC27512 单通道高速低侧栅极驱动器器件可有效驱动金属氧化物半导体场效应晶体管 (MOSFET) 和绝缘栅双极型晶体管 (IGBT) 电源开关。UCC27511 和 UCC27512 采用的设计方案可最大程度减少击穿电流，从而为电容负载提供较高的峰值拉/灌电流脉冲，同时提供轨到轨驱动能力以及超短的传播延迟（典型值为 13ns）。

器件信息⁽¹⁾

器件型号	封装	封装尺寸（标称值）
UCC27511	SOT-23 (6)	2.90mm x 1.60mm
UCC27512	WSON (6)	3.00mm x 3.00mm

如需了解所有可用封装，请见数据表末尾的可订购米6体育平台手机版_好二三四附录。

典型应用图

4 修订历史记录

Changes from E Revision (December 2013) to F Revision

Added 引脚配置和功能部分，处理额定值表，特性描述 部分，器件功能模式，应用和实施部分，电源相关建议部分，布局部分，器件和文档支持部分以及机械、封装和可订购信息部分Go

Changes from D Revision (May 2013) to E Revision

Changed OUTL in the ABS Max Ratings table to show DC and Repetitive pulse valuesGo

Changes from C Revision (June 2012) to D Revision

Added 0.05 to P_SW equation in the Power Dissipation section. Go

Changes from B Revision (March, 2012) to C Revision

Added UCC27512 器件（通篇）。Go
Added 6 引脚 DRS 封装特性。Go
Added DRS pinout for the UCC27512.Go
Added UCC27512 TERMINAL FUNCTIONS table.Go
Added OUT voltage ab max ratings for the UCC27512.Go
Added ⁽⁵⁾Go
Changed ESD ratings of Human Body Model, HBM from 2000 V to 4000 V.Go
Changed ESD ratings of Charged Device Model, CDM SOT-23 from 500 V to 1000 V.Go
Added UCC27512 Thermal Information.Go
Added power dissipation conditions note to Thermal Information section.Go
Added UCC27512 Functional Block Diagram.Go
Added UCC27512 application diagrams.Go
Added Typical Application Diagram note.Go
Added PCB layout bullet.Go

5 说明（续）

UCC27511 特有双输入设计，同一器件可灵活实现反相（IN- 引脚）和非反相（IN+ 引脚）配置。IN+ 引脚和 IN- 引脚均可用于控制驱动器输出的状态。未使用的输入引脚可用于启用和禁用功能。出于安全考虑，输入引脚上的内部上拉和下拉电阻器在输入引脚处于悬空状态时，确保输出被保持在低电平。因此，未使用的输入引脚不能保持在悬空状态，而需要被适当的偏置以确保驱动器输出被启用用于正常运行。

UCC27511 器件的输入引脚阈值基于与 TTL 和 COMS 兼容的低电压逻辑电路，此逻辑电路是固定的且与 V_DD 电源电压无关。高低阈值间的宽滞后提供了出色的抗扰度。

UCC27511 和 UCC27512 提供 4A 拉电流，8A 灌电流（非对称驱动）峰值驱动电流能力。非对称驱动中的强劲灌电流能力提升了抗寄生、米勒接通效应的能力。UCC27511 器件还具有一个独特的分离输出配置，其中的栅极驱动电流通过 OUTH 引脚拉出，通过 OUTL 引脚灌入。这种独特的引脚排列使得用户能够分别在 OUTH 和 OUTL 引脚上使用独立的接通和关断电阻，并且能轻松控制开关转换率。

UCC27511 和 UCC27512 具有 4.5V 至 18V 的宽 V_DD 范围，以及 –40°C 至 140°C 的宽温度范围。V_DD 引脚上的内部欠压锁定 (UVLO) 电路可在超出 V_DD 运行范围时使输出保持低电平。此器件能够在低电压（例如低于 5V）下运行，并且拥有同类米6体育平台手机版_好二三四中较好的开关特性，因此非常适用于驱动诸如 GaN 功率半导体器件等新上市的宽带隙电源开关器件。

6 UCC2751x Product Family

The UCC2751x family of gate-driver products (Table 1) represent Texas Instruments’ latest generation of single-channel low-side high-speed gate-driver devices featuring high-source/sink current capability, industry best-in-class switching characteristics and a host of other features (Table 2) all of which combine to ensure efficient, robust and reliable operation in high-frequency switching power circuits.

Table 1. UCC2751x Product Family Summary

PART NUMBER	PACKAGE	PEAK CURRENT (SOURCE/SINK)	INPUT THRESHOLD LOGIC
UCC27511DBV	SOT-23, 6 pin	4-A/8-A (Asymmetrical Drive)	CMOS/TTL-Compatible (low voltage, independent of VDD bias voltage)
UCC27512DRS	3-mm x 3-mm WSON, 6 pin	4-A/8-A (Asymmetrical Drive)
UCC27516DRS ⁽¹⁾	3-mm x 3-mm WSON, 6 pin	4-A/4-A (Symmetrical Drive)
UCC27517DBV ⁽¹⁾	SOT-23, 5 pin
UCC27518DBV ⁽¹⁾	SOT-23, 5 pin		CMOS (follows VDD bias voltage)
UCC27519DBV ⁽¹⁾	SOT-23, 5 pin		CMOS (follows VDD bias voltage)

(1) Visit www.ti.com for the latest product datasheet.

Table 2. UCC2751x Features and Benefits

FEATURE	BENEFIT
High Source and Sink Current Capability 4 A and 8 A (Asymmetrical) – UCC2751/6/7/8/9 4 A and 4 A (Symmetrical) – UCC27511 and UCC27512	High current capability offers flexibility in employing UCC2751x family of devices 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 band-gap power devices such as GaN
Expanded Operating Temperature range of –40°C to 140°C (See Electrical Characteristics table)
VDD UVLO Protection	Outputs are held low in UVLO condition, which ensures predictable glitch-free operation at power up and power down
Outputs held low when input pins (INx) in floating condition	Safety feature, especially useful in passing abnormal condition tests during safety certification
Ability of input pins (and enable pin in UCC27518/9) to handle voltage levels not restricted by VDD pin bias voltage	System simplification, especially related to auxiliary bias supply architecture
Split output structure in UCC27511 (OUTH, OUTL)	Allows independent optimization of turnon and turnoff speeds
Strong sink current (8 A) and low pulldown impedance (0.375 Ω) in UCC27511 and UCC27512	High immunity to C x dV/dt Miller turnon events
CMOS/TTL compatible input-threshold logic with wide hysteresis in UCC27511, UCC27512, UCC27516 and UCC27517	Enhanced noise immunity, while retaining compatibility with microcontroller logic-level input signals (3.3 V, 5 V) optimized for digital power
CMOS input threshold logic in UCC27518/9 (VIN_H – 70% VDD, VIN_L – 30% VDD)	Well suited for slow input-voltage signals, with flexibility to program delay circuits (RCD)

7 Pin Configuration and Functions

6-Pins

DBV Package

(Top View)

6-Pins

Pin Functions - UCC27511

PIN		I/O	DESCRIPTION
NO.	NAME	I/O	DESCRIPTION
1	VDD	I	Bias supply input.
2	OUTH	O	Sourcing current output of driver. Connect resistor between OUTH and Gate of power-switching device to adjust turnon speed.
3	OUTL	O	Sinking current output of driver. Connect resistor between OUTL and Gate of power-switching device to adjust turnoff speed.
4	GND	-	Ground: All signals referenced to this pin.
5	IN-	I	Inverting input: When the driver is used in noninverting configuration, connect IN- to GND in order to enable output, OUT held LOW if IN- is unbiased or floating
6	IN+	I	Noninverting input: When the driver is used in inverting configuration, connect IN+ to VDD in order to enable output, OUT held LOW if IN+ is unbiased or floating

Pin Functions - UCC27512

PIN		I/O	DESCRIPTION
NO.	NAME	I/O	DESCRIPTION
1	IN+	I	Noninverting input: When the driver is used in inverting configuration, connect IN+ to VDD in order to enable output, OUT held LOW if IN+ is unbiased or floating.
2, 5	GND	-	Ground: All signals referenced to this pin. TI recommends to connect pin 2 and pin 5 on PCB as close to the device as possible.
3	VDD	I	Bias supply input.
4	OUT	O	Sourcing/sinking current output of driver.
6	IN-	I	Inverting input: When the driver is used in noninverting configuration, connect IN- to GND in order to enable output, OUT held LOW if IN- is unbiased or floating.