TEA1791T
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?NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 7 June 2010
4 of 12
NXP Semiconductors
TEA1791T
GreenChip synchronous rectifier controller
If the secondary stroke of the flyback converter is shorter than 2 約 (typical), the driver
output is disabled. This will guarantee stable operation for very low duty cycles. When the
secondary stroke increases above 2.2 約 (typical), the driver output is again enabled.
7.4 Supply management
All internal reference voltages are derived from a temperature compensated, on-chip
band gap circuit.
7.5 Driver
The driver circuit to the gate of the external power MOSFET has a typical source
capability of 250 mA and a typical sink capability of 2.7 A. This permits fast turn-on and
turn-off of the power MOSFET for efficient operation. The output voltage of the driver is
limited to 10 V (typical). This high output voltage will drive all MOSFET brands to the
minimum on-state resistance.
During start-up conditions (V
CC
< V
startup
) and undervoltage lockout the driver output
voltage is actively pulled low.
Fig 3. Synchronous rectification signals
0 V
12 mV
55 mV
310 mV
0 A
0 A
0 V
V
SRSENSE
V
DRIVER
Primary
current
Secondary
current
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相关代理商/技术参数
TEA1792AT/1,118
制造商:NXP Semiconductors 功能描述:Synchronous Rectifier Controller 8-Pin SO T/R 制造商:NXP Semiconductors 功能描述:TEA1792AT/SO8/REEL13//1 - Tape and Reel 制造商:NXP Semiconductors 功能描述:IC SYNC RECT CONTROLLER 8SOIC
TEA1792ATS
制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:GreenChip synchronous rectifier controller
TEA1792ATS/1,115
制造商:NXP Semiconductors 功能描述:Synchronous Rectifier Controller 6-Pin TSOP T/R 制造商:NXP Semiconductors 功能描述:TEA1792ATS/SC-74/REEL7//1 - Tape and Reel 制造商:NXP Semiconductors 功能描述:IC SYNC RECT CONTROLLER 6TSOP
TEA1792N1
制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:GreenChip synchronous rectifier controller
TEA1792T/N1,118
功能描述:DC/DC 开关控制器 20V 0.45W 10%
RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK
TEA1792TS/1
制造商:NXP Semiconductors 功能描述:CNTRL RECTIFICATION 38V 2.7A 6TSOP 制造商:NXP Semiconductors 功能描述:CNTRL, RECTIFICATION, 38V, 2.7A, 6TSOP 制造商:NXP Semiconductors 功能描述:CNTRL, RECTIFICATION, 38V, 2.7A, 6TSOP; Input Voltage:20V; Output Voltage:10V; Supply Voltage Min:8.6V; Supply Voltage Max:38V; Voltage Regulator Case Style:TSOP; No. of Pins:6; No. of Outputs:1; Operating Temperature Min:-40C; ;RoHS Compliant: Yes
TEA1792TS/1,115
功能描述:DC/DC 开关控制器 20V 0.27W 10%
RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK
TEA1795T/N1
制造商:NXP Semiconductors 功能描述:CNTRL RECTIFICATION DUAL 38V 3A 8SO 制造商:NXP Semiconductors 功能描述:CNTRL, RECTIFICATION, DUAL, 38V, 3A, 8SO 制造商:NXP Semiconductors 功能描述:CNTRL, RECTIFICATION, DUAL, 38V, 3A, 8SO; Input Voltage:20V; Output Voltage:10V; Supply Voltage Min:8.6V; Supply Voltage Max:38V; Voltage Regulator Case Style:SOIC; No. of Pins:8; No. of Outputs:2; Operating Temperature Min:-40C; ;RoHS Compliant: Yes