参数资料
型号: DEMOBOARD TLE 6368
厂商: Infineon Technologies
文件页数: 8/59页
文件大小: 0K
描述: BOARD DEMO FOR TLE 6368
标准包装: 1
主要目的: DC/DC,LDO 步降
输入电压: 5.5 ~ 60 V
稳压器拓扑结构: 降压
板类型: 完全填充
已供物品:
已用 IC / 零件: TLE6368
相关产品: TLE6368R-ND - IC PS SYSTEM MULTI VOLT PDSO-36
TLE6368G1-ND - IC PS SYSTEM MULTI VOLT PDSO-36
其它名称: DEMOBOARDTLE6368IN
TLE 6368 / SONIC
2
Detailed circuit description
In the following major buck regulator blocks, the linear voltage regulators and trackers,
the undervoltage reset function, the watchdog and the SPI are described in more detail.
For applications information e.g. choice of external components, please refer to section
5.
2.1
Buck Regulator
The diagram below shows the internal implemented circuit of the Buck converter, i. e. the
internal DMOS devices, the regulation loop and the other major blocks.
IN
5V
Int. voltage
regulator
Int. charge
pump
14V
150μA
to
8 to 10V
current sense
amplifier
FB/L_IN
C+
CCP
Main switch ON/OFF
Gate driver
Main
DMOS
IN
under-
voltage
lockout
C-
BOOT-
STRAP
SW
Divider
switching frequency 330kHz
Slope switch
charge signal
Slope
BOOST
DMOS
Slope switch
Oscillator
1.4MHz
Slope
compensation
Gate off signal
from overtemp or
discharge signal
Lowpass
sleep command
Trigger for
gate on
SW
Voltage
Vref=6V
feedback
amplifier
Current
comparator
Trigger for
gate off
PWM logic
Slope logic
Zero cross
detection
Lowpass
from
current sensing
Current
sense
amplifier
+
Delay unit
Slope
control
SLEW
external components
pins
Figure 3 Detailed Buck regulator diagram
The 1.5A Buck regulator consists of two internal DMOS power stages including a current
mode regulation scheme to avoid external compensation components plus additional
blocks for low EME and reduced switching loss. Figure 3 indicates also the principle how
Data Sheet
8
Rev. 2.2, 2006-12-01
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