主页 电源管理 交流/直流和隔离式直流/直流开关稳压器 PWM 控制器

UC1863-SP

正在供货

航天级 QMLV、22V 输入、1A 双路输出谐振模式 500kHz PWM 控制器

产品详情

Topology Full bridge, Half bridge, Push pull Control mode Voltage Duty cycle (max) (%) 50 Switching frequency (max) (kHz) 500 Features Error amplifier, Multi-topology, Soft start, Soft switching UVLO thresholds on/off (V) 8/7 Operating temperature range (°C) -55 to 125 Rating Space Gate drive (typ) (A) 1 Vin (max) (V) 22 Radiation, SEL (MeV·cm2/mg) Bipolar
Topology Full bridge, Half bridge, Push pull Control mode Voltage Duty cycle (max) (%) 50 Switching frequency (max) (kHz) 500 Features Error amplifier, Multi-topology, Soft start, Soft switching UVLO thresholds on/off (V) 8/7 Operating temperature range (°C) -55 to 125 Rating Space Gate drive (typ) (A) 1 Vin (max) (V) 22 Radiation, SEL (MeV·cm2/mg) Bipolar
LCCC (FK) 20 79.0321 mm² 8.89 x 8.89
  • Controls Zero Current Switched (ZCS) or Zero Voltage Switched (ZVS) Quasi-Resonant Converters
  • Zero-Crossing Terminated One-Shot Timer
  • Precision 1%, Soft-Started 5V Reference
  • Programmable Restart Delay Following Fault
  • Voltage-Controlled Oscillator (VCO) with Programmable Minimum and Maximum Frequencies from 10kHz to 1MHz
  • Low Start-Up Current (150µA typical)
  • Dual 1 Amp Peak FET Drivers
  • UVLO Option for Off-Line or DC/DC Applications
  • Controls Zero Current Switched (ZCS) or Zero Voltage Switched (ZVS) Quasi-Resonant Converters
  • Zero-Crossing Terminated One-Shot Timer
  • Precision 1%, Soft-Started 5V Reference
  • Programmable Restart Delay Following Fault
  • Voltage-Controlled Oscillator (VCO) with Programmable Minimum and Maximum Frequencies from 10kHz to 1MHz
  • Low Start-Up Current (150µA typical)
  • Dual 1 Amp Peak FET Drivers
  • UVLO Option for Off-Line or DC/DC Applications

The UC1861-1868 family of ICs is optimized for the control of Zero Current Switched and Zero Voltage Switched quasi-resonant converters. Differences between members of this device family result from the various combinations of UVLO thresholds and output options. Additionally, the one-shot pulse steering logic is configured to program either on-time for ZCS systems (UC1865-1868), or off-time for ZVS applications (UC1861-1864).

The primary control blocks implemented include an error amplifier to compensate the overall system loop and to drive a voltage controlled oscillator (VCO), featuring programmable minimum and maximum frequencies. Triggered by the VCO, the one-shot generates pulses of a programmed maximum width, which can be modulated by the Zero Detection comparator. This circuit facilitates "true" zero current or voltage switching over various line, load, and temperature changes, and is also able to accommodate the resonant components' initial tolerances.

Under-Voltage Lockout is incorporated to facilitate safe starts upon power-up. The supply current during the under-voltage lockout period is typically less than 150µA, and the outputs are actively forced to the low state.

UVLO thresholds for the UC1861/62/65/66 are 16.5V (ON) and 10.5V (OFF), whereas the UC1863/64/67/68 thresholds are 8V (ON) and 7V (OFF). After VCC exceeds the UVLO threshold, a 5V generator is enabled which provides bias for the internal circuits and up to 10mA for external usage.

A Fault comparator serves to detect fault conditions and set a latch while forcing the output drivers low. The Soft-Ref pin serves three functions: providing soft start, restart delay, and the internal system reference.

Each device features dual 1 Amp peak totem pole output drivers for direct interface to power MOSFETS. The outputs are programmed to alternate in the UC1861/63/65/67 devices. The UC1862/64/66/68 outputs operate in unison alllowing a 2 Amp peak current.

The UC1861-1868 family of ICs is optimized for the control of Zero Current Switched and Zero Voltage Switched quasi-resonant converters. Differences between members of this device family result from the various combinations of UVLO thresholds and output options. Additionally, the one-shot pulse steering logic is configured to program either on-time for ZCS systems (UC1865-1868), or off-time for ZVS applications (UC1861-1864).

The primary control blocks implemented include an error amplifier to compensate the overall system loop and to drive a voltage controlled oscillator (VCO), featuring programmable minimum and maximum frequencies. Triggered by the VCO, the one-shot generates pulses of a programmed maximum width, which can be modulated by the Zero Detection comparator. This circuit facilitates "true" zero current or voltage switching over various line, load, and temperature changes, and is also able to accommodate the resonant components' initial tolerances.

Under-Voltage Lockout is incorporated to facilitate safe starts upon power-up. The supply current during the under-voltage lockout period is typically less than 150µA, and the outputs are actively forced to the low state.

UVLO thresholds for the UC1861/62/65/66 are 16.5V (ON) and 10.5V (OFF), whereas the UC1863/64/67/68 thresholds are 8V (ON) and 7V (OFF). After VCC exceeds the UVLO threshold, a 5V generator is enabled which provides bias for the internal circuits and up to 10mA for external usage.

A Fault comparator serves to detect fault conditions and set a latch while forcing the output drivers low. The Soft-Ref pin serves three functions: providing soft start, restart delay, and the internal system reference.

Each device features dual 1 Amp peak totem pole output drivers for direct interface to power MOSFETS. The outputs are programmed to alternate in the UC1861/63/65/67 devices. The UC1862/64/66/68 outputs operate in unison alllowing a 2 Amp peak current.

下载 观看带字幕的视频 视频

您可能感兴趣的相似产品

open-in-new 比较替代产品
功能与比较器件相似
TPS7H5001-SP 正在供货 具有同步整流功能的耐辐射、QMLV 和 QMLP、2MHz、双输出 PWM 控制器 More feature rich QML-qualified radiation-hardened PWM controller family
TPS7H5005-SEP 正在供货 具有同步整流功能的抗辐射、2MHz 双输出 PWM 控制器 More feature rich radiation-tolerant PWM controller family for LEO or shorter duration missions

技术文档

star =有关此产品的 TI 精选热门文档
未找到结果。请清除搜索并重试。
查看全部 10
类型 标题 下载最新的英语版本 日期
* 数据表 Resonant-Mode Power Supply Controllers 数据表 (Rev. B) 2007年 9月 13日
* SMD UC1863-SP SMD 5962-92031 2016年 7月 8日
更多文献资料 TI Engineering Evaluation Units vs. MIL-PRF-38535 QML Class V Processing (Rev. A) 2023年 8月 31日
应用手册 QML flow, its importance, and obtaining lot information (Rev. C) 2023年 8月 30日
应用手册 单粒子效应置信区间计算 (Rev. A) PDF | HTML 英语版 (Rev.A) PDF | HTML 2022年 12月 2日
应用手册 重离子轨道环境单粒子效应估算 (Rev. A) PDF | HTML 英语版 (Rev.A) PDF | HTML 2022年 11月 30日
选择指南 TI Space Products (Rev. I) 2022年 3月 3日
应用简报 Controlling Input Power for Present and Next-Generation Power Controllers PDF | HTML 2020年 12月 14日
应用手册 DLA Standard Microcircuit Drawings (SMD) and JAN Part Numbers Primer 2020年 8月 21日
应用手册 Hermetic Package Reflow Profiles, Termination Finishes, and Lead Trim and Form PDF | HTML 2020年 5月 18日

设计和开发

如需其他信息或资源,请点击以下任一标题进入详情页面查看(如有)。

封装 引脚 下载
LCCC (FK) 20 查看选项

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

支持和培训

视频