參數(shù)資料
型號: HA16342NT
英文描述: SMPS Controller
中文描述: 開關(guān)電源控制器
文件頁數(shù): 4/21頁
文件大?。?/td> 225K
代理商: HA16342NT
HA16341NT/FP, HA16342NT/FP
Rev.1, Jan. 2001, page 4 of 21
Block Diagram
+
OP1
19R
26dB
6dB
0dB
1.187V
E/IN
OCL
Point B
Current share input
to latch B reset
R
R
PG1
R
T
EIN
EOUT
CFB
CF(+)
CF(
)
MF OUT
VCC
MR OUT
DB
PG1
CFo
PGND
FAIL
Unit R:
C: F
CS(+)
CS(
)
MT
CB
Cin
SGND
HSP
PWM OUT
Vref
SS
CT
PGND
Trig
Start-up latch
initial: Lo
Start-up latch
initial: Hi
DB generator
E/IN = 95% comp.
Error amp.
Reverse
current
comp.
(only HA16341)
OCL
OVP
UVL1
+
FAIL
SS comp.
+
RS-FF
S
RS-FF
939
μ
A
169
μ
A
SW1
SW1 on: 1.3V
SW1 off: 3.4V
UVL2
Exit trigger control
Oscillator
Dead Band adjust
Light load detector
+
OP6
+
OP2
+
OP1-2
+
2.5V
T
OP3
+
OP4
+
+
CT level
compression
CT'
+
+
latch A
R
S
Q
RS-FF
latch B
Q
R
latch C
R
S
Q
Q
latch D
R
S
Q
Q
12mV
CS(+)
+
1.25V
from B
+
Vref 5V
Vref 5V
Hi: stop
100k
from Trig
Driver
Driver
128.5k
Delay
+
+
Vref
UVL2
1.25V
Hi: 0.7V
Lo: 0.5V
Hi: PWM ON
2R
R
V
Z
= 6.8V
PG1
+
7.5V
+
Hi: 2.5V
Lo: 2.0V
1.25V
1.25V
+
+
OP5
0dB
V
Z
= 1.24V
50k
10k90k
R
R
1k
1k
R
20dB
2R
2R
2R
2R
Driver
Driver
S1
S2
16 pulse
delay
SW2 on
at HSP Hi
SW2
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