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L6591 데이터시트(PDF) 1 Page - STMicroelectronics

부품명 L6591
상세설명  PWM controller for ZVS half-bridge
Download  32 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

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June 2008
Rev 1
1/32
32
L6591
PWM controller for ZVS half-bridge
Features
Complementary PWM control for soft-switched
half-bridge with programmable dead-time
Up to 500 kHz operating frequency
On-board high-voltage start-up
Advanced light load management
Adaptive UVLO
Pulse-by-pulse OCP
OLP (latched or autorestart)
Transformer saturation detection
Interface with PFC controller
Latched disable input
Input for power-on sequencing or brownout
protection
Programmable soft-start
4 % precision external reference
600 V-rail compatible high-side gate driver with
integrated bootstrap diode and high dV/dt
immunity
SO16N package
Applications
High power AC-DC adapter/charger
Desktop PC, entry-level server
Telecom SMPS
SO-16
SO16 narrow
Figure 1.
Typical application circuit
5
Vre f
+
-
1.5V
3
BLANKI NG
R
S
Q
25 V
Vc c_O K
DIS
R
3R
DIS
7
4
11
6
9
CLK
COMP
SS
ISEN
OSC
VCC
VREF
GND
HICCUP
VREG
VREG
0.3 2mA
TIMING
PWM
+
-
16
HV
LV G
HV ge nerator ON/O
FFa nd
a daptive UV LOmanagement
Vcc_OK
8
PFC_STOP
2.0 V
-
+
OCP2
DI S
OCP2
+
-
SOFT-START
BURST- M ODE CTRL
S
Q
R
S
Q
R
VCC
14
HVG
10
1 3
FGND
LEVEL
SHIFTER
15
BOOT
Sync hronous
bootstra p diode
1.7 5V
-
+
2
DIS
4.5V
OCP
-
+
-
+
1
LINE
1.5V
15µA
LINE_ OK
LINE_OK
S HUT DO WN
PWM _CT L
Ilimre f
0.8 V max.
Low
UVLO
Low
UV LO
www.st.com


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