SRM4010 Microsemi Commercial Components Group, SRM4010 Datasheet - Page 10

• Manufacturer Part Number: SRM4010
• Description: DIODE SYNC POWERMOD 40A SMD
• Manufacturer: Microsemi Commercial Components Group

Specifications of SRM4010

• Applications: Processor
• Operating Temperature: -40°C ~ 80°C
• Package / Case: SMD 1.83mm x 1.43mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Mounting Type: -
• Current - Supply: -
• Voltage - Supply: -

Multi-Output Applications
The module can be used in multiple output converters also. As in any converter with multiple outputs from one power converter, there are
limitations on the range of load variations for good regulation.
Below is a two output application where one output is regulated and the other tracks based on the transformer turns ratio. As long as both
sections are operating in the continuous conduction mode over the required load range, this approach actually has very good cross
regulation. The low voltage drop in the module helps to improve cross regulation.
The dual output approach can be followed by a non-isolated buck power converter to improve regulation if needed. This still allows the two
outputs to have isolated grounds. The switching regulator can be an integrated regulator with the power switches internal to the device or
even a synchronous rectifier approach. The secondary winding rectifiers also can be implemented with Schottkys. For the cases where the
power level is lower for the secondary output, this can be combined with a simple linear regulator.
Hot Swap and Redundant Converter Applications
The self-driven approach to synchronous rectification has serious problems when converters are operated in parallel. This is desirable in
many applications to improve system reliability or to allow higher output current than is practical with a single converter or in some cases to
power a load from multiple power inputs. Forward converters using the SRM
power converter outputs.
Copyright
2004-02-06
2000
REV. 1
C4
5
6
1
T1C
D3
CURRENT
MODE
CONTROL
R4
C O L O R A D O D I V I S I O N
800 Hoyt Street, Broomfield, CO. 80020, 303-469-2161, Fax: [phone]
T1B
R6
4
3
1
SRM
D1
1
2
1
Q1
R1
TM
T1A
4010 Multiple Output Configuration
7
8
9
10
T6D
T1E
Colorado Division
Microsemi
2
FW D
2
FW D
U1
Pgnd
6
Figure 9
U1
Pgnd
CTCH
6
1
Sgnd
CTCH
1
SRM
3
Sgnd
SRM
3
9
47 PF
SPD
9
47 PF
TM
C2
SPD
CPDT
8
T M
C2
4010
40A Synchronous Rectifier Module
8
REGout
7
CPDT
CDLY
4010
REGin
REGout
7
CDLY
REGin
TM
C3
22 PF
4
5
C3
22 PF
4010 are well behaved when they are connected to other
3
4
4
5
1
2
ISO1
L1
R3
L1
R5
C1
U2
TLV431A
C5
R2
SRM
C1
TM
4010
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