UC1875 相移谐振控制器_BDTIC代理TI 德州仪器UC1875

UC1875 相移谐振控制器

The UC1875 family of integrated circuits implements control of a bridge power stage by phase-shifting the switching of one half-bridge with respect to the other, allowing constant frequency pulse-width modulation in combination with resonant, zero-voltage switching for high efficiency performance at high frequencies. This family of circuits may be configured to provide control in either voltage or current mode operation, with a separate over-current shutdown for fast fault protection.

A programmable time delay is provided to insert a dead-time at the turn-on of each output stage. This delay, providing time to allow the resonant switching action, is independently controllable for each output pair (A-B, C-D).

With the oscillator capable of operation at frequencies in excess of 2MHz, overall switching frequencies to 1MHz are practical

	UC1875
Topology	Full-Bridge
Control Method	Current,Voltage
Duty Cycle (Max) (%)	100
Frequency (Max) (kHz)	1000
UVLO Thresholds On/Off (V)	10/7/9.2
Pin/Package	20CDIP, 28LCCC
Vin (Min) (V)	9.25
Vin (Max) (V)	20
Regulated Outputs (#)	4
Operating Temperature Range (C)	-55 to 125
Rating	Military

UC1875 特性

Zero to 100% Duty Cycle Control
Programmable Output Turn-On Delay
Compatible with Voltage or Current Mode Topologies
Practical Operation at Switching Frequencies to 1MHz
Four 2A Totem Pole Outputs
10MHz Error Amplifier
Undervoltage Lockout
Low Startup Current—150µA
Outputs Active Low During UVLO
Soft-Start Control
Latched Over-Current Comparator With Full Cycle Restart
Trimmed Reference

UC1875 芯片订购指南

器件	状态	温度 (oC)	价格（美元）	封装 \| 引脚	封装数量 \| 封装载体	丝印标记
5962-9455501M3A	ACTIVE	-55 to 125	36.55 \| 100u	LCCC (FK) \| 28	1 \| TUBE
5962-9455501MRA	ACTIVE	-55 to 125	24.18 \| 100u	CDIP (J) \| 20	1 \| TUBE
UC1875J	ACTIVE	-55 to 125	15.74 \| 100u	CDIP (J) \| 20	1 \| TUBE
UC1875J883B	ACTIVE	-55 to 125	24.18 \| 100u	CDIP (J) \| 20	1 \| TUBE
UC1875L	ACTIVE	-55 to 125	27.45 \| 100u	LCCC (FK) \| 28	1 \| TUBE
UC1875L883B	ACTIVE	-55 to 125	36.55 \| 100u	LCCC (FK) \| 28	1 \| TUBE

UC1875 质量与无铅数据

器件	环保计划*	铅/焊球涂层	MSL 等级/回流焊峰	环保信息与无铅 (Pb-free)	DPPM / MTBF / FIT 率
5962-9455501M3A	TBD	Call TI	Call TI	5962-9455501M3A	5962-9455501M3A
5962-9455501MRA	TBD	Call TI	Call TI	5962-9455501MRA	5962-9455501MRA
UC1875J	TBD	A42	N/A for Pkg Type	UC1875J	UC1875J
UC1875J883B	TBD	A42	N/A for Pkg Type	UC1875J883B	UC1875J883B
UC1875L	TBD	POST-PLATE	N/A for Pkg Type	UC1875L	UC1875L
UC1875L883B	TBD	POST-PLATE	N/A for Pkg Type	UC1875L883B	UC1875L883B

UC1875 工具与软件

培训内容	型号	软件/工具类型
最常用开关模式电源的功率级设计器	POWERSTAGE-DESIGNER	分析软件