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UCG28826

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具有集成式 GaN (65W) 的自偏置高频 QR 反激式转换器

产品详情

Rating Catalog Topology Flyback Switch current limit (typ) (A) 3.5 Features Adjustable current limit, Auxless-sense, High-voltage startup, Integrated GaN FET, Overcurrent protection, Overtemperature protection, Overvoltage protection, Self-bias, Short circuit protection, USB C/PD compatible, Undervoltage protection, X-cap discharge EMI features Frequency Dithering, Switching slew rate control, Valley hopping Control mode Peak current mode Switching frequency (min) (kHz) 25 Switching frequency (max) (kHz) 500 Operating temperature range (°C) -40 to 105 Type Converter (Integrated Switch)
Rating Catalog Topology Flyback Switch current limit (typ) (A) 3.5 Features Adjustable current limit, Auxless-sense, High-voltage startup, Integrated GaN FET, Overcurrent protection, Overtemperature protection, Overvoltage protection, Self-bias, Short circuit protection, USB C/PD compatible, Undervoltage protection, X-cap discharge EMI features Frequency Dithering, Switching slew rate control, Valley hopping Control mode Peak current mode Switching frequency (min) (kHz) 25 Switching frequency (max) (kHz) 500 Operating temperature range (°C) -40 to 105 Type Converter (Integrated Switch)
VQFN (REZ) 12 25 mm² 5 x 5
  • Integrated 750V GaN HEMT
  • Dynamic QR/DCM/CCM modes of operation
  • High Power density: Up to 500kHz switching frequency
  • Enable low BoM cost by integration
    • Remove auxiliary winding with self bias
    • Integrated input and output voltage sensing
    • Integrated current sense
    • Integrated HV start-up
    • Integrated X-cap discharge
  • High efficiency and low EMI performance
    • Ultra-low standby power: <30mW
    • Frequency foldback and burst mode
    • Valley locking
    • Frequency dithering
    • Switching slew rate control
  • Comprehensive protection features
    • Overtemperature protection
    • Input and output overvoltage protection
    • Short-circuit protection
    • Cycle-by-cycle current limit
    • Two-level over power protection with LPS
    • Brownin and brownout protection
    • Open feedback protection
  • Flexible configurability through external resistors
    • X-cap discharge and CCM mode disable
    • Selectable switching slew rate
    • Multiple clamping frequency settings
    • Fault latch or auto-restart
    • Maximum and minimum peak current ratio
  • Integrated 750V GaN HEMT
  • Dynamic QR/DCM/CCM modes of operation
  • High Power density: Up to 500kHz switching frequency
  • Enable low BoM cost by integration
    • Remove auxiliary winding with self bias
    • Integrated input and output voltage sensing
    • Integrated current sense
    • Integrated HV start-up
    • Integrated X-cap discharge
  • High efficiency and low EMI performance
    • Ultra-low standby power: <30mW
    • Frequency foldback and burst mode
    • Valley locking
    • Frequency dithering
    • Switching slew rate control
  • Comprehensive protection features
    • Overtemperature protection
    • Input and output overvoltage protection
    • Short-circuit protection
    • Cycle-by-cycle current limit
    • Two-level over power protection with LPS
    • Brownin and brownout protection
    • Open feedback protection
  • Flexible configurability through external resistors
    • X-cap discharge and CCM mode disable
    • Selectable switching slew rate
    • Multiple clamping frequency settings
    • Fault latch or auto-restart
    • Maximum and minimum peak current ratio

UCG28836 is a high frequency, quasi-resonant flyback converter with a built-in 750V GaN high electron mobility transistor (HEMT) with low Rds(on) for AC to DC power conversion. The UCG28836 is designed for high power density applications, such as cell phone fast chargers and notebook adapters. The key feature of this device is the self-bias and auxless sensing scheme which eliminates the need of the auxiliary winding and simplifies the system design with higher efficiency.

The UCG28836 also features intelligent mode transition (CCM/QR/DCM) to enable high efficiency across wide power range and <30mW standby power consumption. In addition, UCG28836 includes a full list of protections such as brownin and brownout protection, SCP, OVP, OPP, LPS, OFB and OTP. The cycle-by-cycle current limit allows for fast response to the fault conditions to safeguard the system and improve the reliability. In a small 5mm × 5mm package, the UCG28836 has dedicated configuration pins to offer more flexibility. Only resistors are needed to tune certain parameters for each system, enabling a platform design with a single device.

UCG28836 is a high frequency, quasi-resonant flyback converter with a built-in 750V GaN high electron mobility transistor (HEMT) with low Rds(on) for AC to DC power conversion. The UCG28836 is designed for high power density applications, such as cell phone fast chargers and notebook adapters. The key feature of this device is the self-bias and auxless sensing scheme which eliminates the need of the auxiliary winding and simplifies the system design with higher efficiency.

The UCG28836 also features intelligent mode transition (CCM/QR/DCM) to enable high efficiency across wide power range and <30mW standby power consumption. In addition, UCG28836 includes a full list of protections such as brownin and brownout protection, SCP, OVP, OPP, LPS, OFB and OTP. The cycle-by-cycle current limit allows for fast response to the fault conditions to safeguard the system and improve the reliability. In a small 5mm × 5mm package, the UCG28836 has dedicated configuration pins to offer more flexibility. Only resistors are needed to tune certain parameters for each system, enabling a platform design with a single device.

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评估板

UCG28826EVM-093 — UCG28826 评估模块

UCG28826EVM-093 是一款 65W USB-C® PD 评估模块 (EVM),可评估适用于交流/直流适配器、充电器、USB 墙壁插座和其他应用的离线 GaN 集成准谐振反激式适配器。该 EVM 符合 CoC 第二级和 DoE 第六级标准的能效要求。该 EVM 的用途是进行评估,不是最终产品。UCG28826EVM-093 将 90VRMS 至 264VRMS 的输入电压降压至可选的 USB-C PD 输出电压 20VDC(最大电流为 3.25A)以及 5VDC、9VDC 和 15VDC(最大输出电流等级为 3.00A)。该设计中使用的主要器件是具有集成式 650V GaN FET (...)

用户指南: PDF | HTML
英语版 (Rev.B): PDF | HTML
仿真模型

UCG28826 Simplis Model

SLUM953.ZIP (296 KB) - SIMPLIS Model
计算工具

UCG28826-CALC UCG28826 design calculator

System design tool based on flyback converter with integrated GaN
支持的产品和硬件

支持的产品和硬件

参考设计

PMP31375 — 带自偏置 GaN 的 180VAC 至 275VAC 输入,96W - 24VAC/DC 反激参考设计

该参考设计是一款可提供 24V、1A 平均输出以及持续 4 秒提供高达 96W 功率的电源。该设计支持需要解决电机驱动或瞬时功率负载等高峰值功率问题的所有情况。集成式准谐振控制器、氮化镓 (GaN) 开关和自偏置部分可保持低待机损耗,同时提供高效率,并且无需在变压器中使用辅助绕组。简单的变压器结构降低了漏电感,并通过减少缓冲器损耗提高了效率。此外,移除辅助绕组和相关元件可降低 BOM 成本并减小 PCB 占用空间。
测试报告: PDF
参考设计

PMP31406 — 准谐振 GaN 反激式参考设计

本参考设计可在 195VAC 至 265VAC 输入下生成 24V 输出,负载电流为 2.5A。该设计使用自偏置氮化镓 (GaN) 反激式 UCG28826。该设计可以提供 60W 输出功率。该设计不需要辅助变压器绕组,因为此器件集成了自偏置和无辅助检测方案。满负载时该设计在 130kHz 开关频率下工作,并在中等负载或轻负载时降低开关频率,从而保持高效率。
测试报告: PDF
参考设计

PMP41117 — 具有自偏置 GaN 反激式转换器的 65W 双端口 USB 电力输送充电器参考设计

此参考设计是一款带自偏置氮化镓 (GaN) 反激式转换器的 65W 双端口 USB PD 快充 充电器。此设计可在 90VAC 至 264VAC 范围内提供 65W 的满额定功率,并满足效率标准和法规要求,如 DoE VI 级和 CoC V5 2 级的平均效率标准(覆盖 25%、50%、75% 和 100% 的负载),同时还可实现低待机功耗。交流/直流级反激式转换器 UCG28826 具有 VCC 自偏置功能,并通过消除辅助绕组以及相关的 VCC 整流器电路来简化电路。直流/直流级降压转换器 TPS56837HA 开关频率为 500kHz,可以进一步减小降压级尺寸,从而实现每立方厘米 (...)
测试报告: PDF
参考设计

PMP41163 — 具有集成 GaN 的通用交流输入 65W 低高度 AC/DC USB 电源输送充电器参考设计

此参考设计是一款具有集成反激式控制器和氮化镓 (GaN) 电源开关的 65W 低高度交流/直流USB 电力输送 (PD) 充电器参考设计。此设计可通过使用低高度平面印刷电路板 (PCB) 变压器实现低于 10mm 的高度。反激式转换器 UCG28826 具有 VCC 自偏置功能,并通过消除辅助绕组以及相关的 VCC 整流器电路来简化平面变压器 PCB 绕组。该设计可满足效率标准和法规要求,例如美国能源部 (DoE) 第 VI 级和欧盟行为规范 (CoC) V5 第 2 级标准。此设计在 230VAC 时可实现低于 75mW 的待机功耗。
测试报告: PDF
参考设计

PMP41131 — 具有集成 GaN 的通用交流输入 45W 低高度 USB 电源输送充电器参考设计

此参考设计是一款具有集成反激式控制器和氮化镓 (GaN) 电源开关的 45W 低高度交流/直流USB 电力输送 (PD) 充电器参考设计。此设计可通过使用低高度平面 PCB 变压器实现低于 10mm 的高度。反激式转换器 UCG28826 具有 VCC 自偏置功能,并通过消除辅助绕组以及相关的 VCC 整流器电路来简化平面变压器 PCB 绕组。该设计可满足效率标准和法规要求、例如美国能源部 (DOE) 第 VI 級和行为规范 (CoC) 版本 5 (V5) 第 2 级标准。此设计在 230VAC 时可实现低于 75mW 的待机功耗。
测试报告: PDF
参考设计

PMP41145 — 具有集成 GaN 的通用交流输入、65W、20V、3.25A 反激式参考设计

该参考设计是一款具有集成反激式和氮化镓 (GaN) 的 65W、20V 固定输出电压交流/直流电源设计。该设计可在 90VAC 至 264VAC 的范围内提供 65W 的满额定功率,在 90VAC 的条件下可实现 93% 的效率。该设计可满足针对 25%、50%、75%、100% 和待机功耗的平均效率的效率标准和法规(例如 DoE 第 VII 级和 CoC V5 第 2 级效率标准)。该设计可实现每立方厘米 2.3W 的功率,并且无需辅助绕组以及相关的 VCC 整流器电路。该设计还可以支持长达 4ms 的 100W 峰值功率能力。
测试报告: PDF
封装 引脚 CAD 符号、封装和 3D 模型
VQFN (REZ) 12 Ultra Librarian

订购和质量

包含信息:
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息:
  • 制造厂地点
  • 封装厂地点

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