mp6001dn MPS, mp6001dn Datasheet - Page 12

• Manufacturer Part Number: mp6001dn
• Description: Monolithic Flyback/forward Dc-dc Converter
• Manufacturer: MPS

Control Design
Generally, telecom power supplies require the
galvanic isolation between a relatively high
input voltage and low output voltages. The most
widely used devices to transfer signals across
the isolation boundary are pulse transformers
and optocouplers.
V
MP6001 Rev. 0.91
9/21/2007
IN
Power Supply with Optocoupler Feedback
Figure 7—Simplified Circuit of Isolated
+
--
d
S
+
--
Tr
TM
R6
--
+
D
V
REF
R
C
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
ESR
O
R3
V
R
CC
LOAD
MP6001 – MONOLITHIC FLYBACK/FORWARD DC-DC CONVERTER
R4
TL431
R5
R2
© 2007 MPS. All Rights Reserved.
C1
www.MonolithicPower.com
V
O
MP6001_F07
R1
Rb
The MP6001 uses current mode control to
achieve easy compensation and fast transient
response. A type II compensation network
which has two poles and one zero is needed to
stabilize
compensation parameters are provided in the
EV6001DN datasheet.
Boost Controller Application
The MP6001 can be used as a boost controller
as shown in Figure 8.
V
IN
Figure 8—High Voltage LED Boost
the
Controller Circuit
C3
10nF
1
2
3
4
GND
LINE
FB
COMP
system.
MP6001
VCC
VIN
SW
RT
8
7
6
5
The
200V/1A
D1
practical
MP6001 _F08
20mA
180V
12