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参数资料
| 型号： | TLE6387GV60 |
| 厂商： | INFINEON TECHNOLOGIES AG |
| 元件分类： | 稳压器 |
| 英文描述： | 1 A SWITCHING CONTROLLER, 430 kHz SWITCHING FREQ-MAX, PDSO14 |
| 封装： | PLASTIC, DSO-14 |
| 文件页数： | 8/24页 |
| 文件大小： | 264K |
| 代理商： | TLE6387GV60 |
TLE 6387 G
Target Datasheet Rev. 0.5
16
2001-08-27
Current Mode Amplifier OCA
CM
The current mode signal is provided by the fast current amplifier OCA
CM. This is done
without any shunt resistor by integrating the alternating voltage drop across the choking
coil.
PWM Comparator C
PWM
By comparison of the compensated current mode signal and the output voltage of OTA
EA
the fast comparator C
PWM creates the required duty cycle.
Standby Control Comparator C
STBY
An external stand-by request is handled by C
STBY. As long as pin 8 (STBY) is not
connected, the voltage at this pin is pulled-up by means of an internal current source and
the controller is kept in stand-by mode (
V
STBY > 2 V). As soon as the voltage at pin 8
(STBY) drops below 0.8 V the controller becomes active. This stand-by feature,
however, does not control the operation of the reset logic’s outputs at pins 6 (RST) and
7 (RST). The reset logic keeps on running as long as
V
FB > 1 V.
Overvoltage Comparator C
OV (Version GV50 only)
C
OV checks the average output voltage at pin 9 (VFB) for overvoltages. In order to filter
the output voltage ripple as well as transient voltage spikes the overvoltage comparator
is equipped with a threshold voltage hysteresis and a low pass filter. If the upper
threshold voltage is exceeded, both reset outputs are set. If afterwards the voltage at pin
9 (
V
FB) drops below the lower threshold voltage, both reset outputs are reset as soon as
the corresponding reset delay of 21 ms has past.
Undervoltage Comparator C
UV (Version GV50 only)
C
UV checks the average output voltage at pin 9 (VFB) for undervoltages. In order to filter
the output voltage ripple as well as transient voltage spikes the undervoltage comparator
is equipped with a threshold voltage hysteresis and a low pass filter. If the voltage at pin
9 (
V
FB) drops below the lower threshold voltage, both reset outputs are set. If afterwards
the voltage at pin 9 (
V
FB) increases above the upper threshold voltage, both reset
outputs are reset as soon as the corresponding reset delay of 21 ms has past.
Short-Circuit Comparator C
SC
In order to allow for a broad variety of driven transistors a short-circuit condition is
detected by C
SC as soon as the voltage drop across the respective transistor exceeds
0.75V (GV50) or 1.25V (GV60). To distinguish the large short-circuit voltage drop from
the even larger voltage drop that occurs if the driven transistor is switched off, C
SC is
enabled a fixed delay after the gate of the driven transistor is charged and disabled as
soon as the driver is switched off.
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| TLE6389-2GV | 功能描述:DC/DC 开关控制器 Step-Dwn DC/DC CTRLR 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 |
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