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參數(shù)資料
| 型號(hào)： | AS2916 |
| 廠商： | Princeton Technology Corporation |
| 英文描述： | PWM Controller |
| 中文描述： | PWM控制器 |
| 文件頁數(shù)： | 4/8頁 |
| 文件大?。?/td> | 63K |
| 代理商： | AS2916 |
252
www.ptcc.com.tw
AS2916
PWM Controller
Pin Function Description
Pin Number
Function
Description
12
CMPA
This is the Auxiliary convertor error amplifier compensation pin
or if secondary controller is desired, the Auxiliary control input
pin. A simple capacitor to ground is the only circuitry expected.
Note: There is no external connection for voltage feedback.
Voltage sensing is provided internally in such a way that VCC
not loaded until it reaches predefined threshold. If secondary
control is required, it can be forced into the CMPA pin.
This is the Auxiliary convertor current sense pin. An external
RC filter from the Auxiliary power FET and slope compensation
resistor from the RAMP pin is all the expected external cir-
cuitry.
This is the gate drive output for the Auxiliary FET. The totem
pole output has equivalent of an extra 33
resistor to limit the
FET turn on speed and a pull down resistor to ensure the FET
gate is never open. No external circuitry except for the FET is
expected on this pin. The largest FET expected to be driven is
IRF820. If a larger power FET is used, a buffer might be
required.
Signal ground.
Power ground.
is
13
SNSA
14
OUTA
15
16
GND
PGND
Absolute Maximum Ratings
Parameter
Symbol
Rating
Unit
Reference Current
IREF
IOUT
VCC
VOUT
PD
TJ
TSTG
TL
200
mA
Output Current
1
A
Supply Voltage
20
V
Output Voltage
20
V
Continuous Power
500
mW
Junction Temperature
150
°C
Storage Temperature
–60 to +150
°C
Lead Temperature (Soldering, 10 seconds)
300
°C
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