- 您现在的位置：买卖IC网 > PDF目录98246 > TLE6389GVT (INFINEON TECHNOLOGIES AG) SWITCHING CONTROLLER, 420 kHz SWITCHING FREQ-MAX, PDSO14 PDF资料下载
参数资料
| 型号： | TLE6389GVT |
| 厂商： | INFINEON TECHNOLOGIES AG |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 420 kHz SWITCHING FREQ-MAX, PDSO14 |
| 封装： | PLASTIC, DSO-14 |
| 文件页数： | 24/37页 |
| 文件大小： | 368K |
| 代理商： | TLE6389GVT |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页当前第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页
TLE 6389
Preliminary data sheet Rev. 1.0
30
2003-05-05
depends on the MOSFET drain-to-source on-resistance, the current-sense resistor and
the inductor series resistance. It is proportional to the load current:
7.8
SYNC Input and Frequency Control
The TLE6389’s internal oscillator is set for a fixed PWM switching frequency of 360kHz
or can be synchronized to an external clock at the SYNC pin. When the internal clock is
used SYNC has to be connected to GND. SYNC is a negative-edge triggered input that
allows synchronization to an external frequency ranging between 270kHz and 530kHz.
When SYNC is clocked by an external signal, the converter operates in PWM mode until
the load current drops below the PWM to PFM threshold. Thereafter the converter
continues operation in PFM mode.
7.9
Shutdown Mode
Connecting ENABLE to GND places the TLE6389GV in shutdown mode. In shutdown,
the reference, control circuitry, external switching MOSFET, and the oscillator are turned
off and the output falls to 0V. Connect ENABLE to voltages higher than 4.5V for normal
operation.
7.10
Buck converter circuit
A typical choice of external components for the buck converter circuit is given in figure
2 and 3. For basic operation of the buck converter the input capacitors C
IN1, CIN2, the
driver supply capacitor C
BDS, the sense resistor RSENSE, the PMOS device, the catch
diode D1, the induuctance L1 and the output capacitor C
OUT are necessary. In addition
for low electromagnetic emission a Pi-filter at the input and/or a small resistor in the path
between GDRV and the gate of the PMOS may be necessary.
7.10.1
Buck inductance (L1) selection in terms of ripple current:
The internal PWM/PFM control loop includes a slope compensation for stable operation
in PWM mode. This slope compensation is optimzed for inductance values of 47H and
V
drop
I
LOAD
R
DS ON
()PMOS
R
SENSE
R
INDUCTANCE
++
()
=
相关PDF资料 |
PDF描述 |
|---|---|
| TLE6711G | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO14 |
| TLE7209R | STEPPER MOTOR CONTROLLER, PDSO20 |
| TLE7824G | SPECIALTY ANALOG CIRCUIT, PDSO28 |
| TLE8201R | SPECIALTY CONSUMER CIRCUIT, PDSO36 |
| TLE8242-2 | SPECIALTY ANALOG CIRCUIT, PQFP64 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TLE6710Q | 功能描述:接口 - 专用 Combined Power Supply and Firing IC RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| TLE6710QNUMA1 | 制造商:Infineon Technologies AG 功能描述:Firing Circuit 64-Pin MQFP 制造商:Infineon Technologies AG 功能描述:AIRBAG_RESTRAINT_IC - Tape and Reel |
| TLE6711 | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:Multifunctional Voltage Regulator and Watchdog |
| TLE6711_07 | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:Multifunctional Voltage Regulator and Watchdog |
| TLE6711G | 功能描述:直流/直流开关调节器 MULTIFUNCTIONAL VOLT REGULATOR/WATCHDOG RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
发布紧急采购，3分钟左右您将得到回复。