ZCC5050 替代 LM5050

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一 产品概述 ZCC5050-1 是一款高性能的高侧 OR-ing FET 控制器，适用于冗余电源系统。它通过
外部 N 沟道 MOSFET 实现理想的二极管整流功能，可显著降低传统二极管整流器带来的功率损耗和电压
降。ZCC5050-1 提供了快速的电流反转响应能力，能够在 50ns 内关闭 MOSFET，确保系统的稳定性和可
靠性。
ZCC5050-1 is a high-performance high side OR ing FET controller suitable for redundant power systems. It
achieves ideal diode rectification function through external N-channel MOSFET, which can significantly
reduce the power loss and voltage drop caused by traditional diode rectifiers. ZCC5050-1 provides fast
current reversal response capability, capable of turning off MOSFETs within 50ns, ensuring system
stability and reliability.
二 特性
● 提供标准版和 AEC-Q100 认证版本（ZCC5050Q0MK-1 最高结温可达 150°C，ZCC5050Q1MK-1 最高
结温可达 125°C）。Provide standard and AEC-Q100 certified versions (ZCC5050Q0MK-1 has a maximum junction
temperature of 150 ° C, ZCC5050Q1MK-1 has a maximum junction temperature of 125 ° C).
● 宽输入电压范围：VIN 为 1V 至 75V（VIN < 5V 时需额外提供 VBIAS）。Wide input voltage range: VIN
is 1V to 75V (VBIAS is required when VIN<5V).
● 100V 瞬态耐受能力。 100V transient withstand capability.
● 内置电荷泵驱动外部 N 沟道 MOSFET。 Built in charge pump drives external N-channel MOSFET
● 快速响应：在电流反转时，响应时间仅为 50ns。Fast response: When the current reverses, the response time
is only 50ns.
● 2A 峰值栅极关断电流。2A peak gate turn off current.
● 最小 VDS 钳位，实现更快的关断速度。Minimum VDS clamp for faster shutdown speed.
● 封装类型：SOT-6（薄型 SOT-23-6）。Packaging type: SOT-6 (thin SOT-23-6).
三 应用领域
● 冗余电源（N+1）的主动 OR-ing。 Active OR ing of redundant power supply (N+1).
四 描述 ZCC5050-1/-Q1 高侧 OR-ing FET 控制器与外部 MOSFET 配合使用，当串联在电源中时，
可作为理想的二极管整流器。该控制器通过内置的电荷泵为外部 N 沟道 MOSFET 提供栅极驱动，并利用
快速响应比较器在电流反向流动时迅速关闭 MOSFET。ZCC5050-1/-Q1 可连接 5V 至 75V 的电源，并能
承受高达 100V 的瞬态电压。The ZCC5050-1/- Q1 high side OR ing FET controller, when used in
conjunction with an external MOSFET, can serve as an ideal diode rectifier when connected in series with
a power supply. The controller provides gate drive for the external N-channel MOSFET through a built-in
charge pump, and uses a fast response comparator to quickly turn off the MOSFET when current flows in
reverse. ZCC5050-1/- Q1 can be connected to a power supply ranging from 5V to 75V and can withstand
transient voltages up to 100V.