參數(shù)資料
型號(hào): U1825Q
廠商: Texas Instruments, Inc.
英文描述: High Speed PWM Controller
中文描述: 高速PWM控制器
文件頁數(shù): 5/17頁
文件大小: 914K
代理商: U1825Q
5
UC1825
UC2825
UC3825
High speed circuits demand careful attention to layout
and component placement. To assure proper perfor-
mance of the UC1825 follow these rules: 1) Use a ground
plane. 2) Damp or clamp parasitic inductive kick energy
from the gate of driven MOSFETs. Do not allow the out-
put pins to ring below ground. A series gate resistor or a
shunt 1 Amp Schottky diode at the output pin will serve
this purpose. 3) Bypass V
CC
, V
C
, and V
REF
. Use 0.1
μ
F
monolithic ceramic capacitors with low equivalent series
inductance. Allow less than 1 cm of total lead length for
each capacitor between the bypassed pin and the ground
plane. 4) Treat the timing capacitor, CT, like a bypass ca-
pacitor.
Open Loop Frequency Response
Unity Gain Slew Rate
Simplified Schematic
Error Amplifier Circuit
PWM Applications
Conventional (Voltage Mode)
Current-Mode
Printed Circuit Board Layout Considerations
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