ADM1041-EVAL Analog Devices Inc, ADM1041-EVAL Datasheet - Page 31

• Manufacturer Part Number: ADM1041-EVAL
• Description: BOARD EVALUATION ADM1041
• Manufacturer: Analog Devices Inc

Specifications of ADM1041-EVAL

• Main Purpose: AC/DC, Secondary Side
• Outputs And Type: 1, Non-Isolated
• Power - Output: 24W
• Voltage - Output: 12V
• Current - Output: 2A
• Voltage - Input: 85 ~ 132VAC
• Board Type: Fully Populated
• Utilized Ic / Part: ADM1041
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Frequency - Switching: -
• Regulator Topology: -
• Lead Free Status / Rohs Status: Not Compliant

AC_OK
This output is true when either AC
(configurable). It can be configured as an open-drain N-channel
or P-channel MOSFET and as positive or negative (inverted)
logic. A pull-up or pull-down resistor is required. This pin can
be wire-ORed with the same pin on other ADM1041 ASICs in
the power supply. When the AC_OK pin is not used as such, it
can be configured as an analog input, MON5, or as a voltage
reference.
MON5
This is the alternative analog comparator function for the
AC_OK/V
100 µA current source that allows hysteresis to be controlled by
adjusting the external source resistance. It is ideal for an OTP
sensing circuit using a thermistor as part of a voltage divider.
The OTP condition can be configured to latch off the power
supply (similar to OVP) or to allow an auto-restart (soft OTP).
See Figure 22.
REF
SHAREOK
pin (Pin 18). The threshold is 2.5 V, and it has a
ORFETOK
PENOK
RESET
V
V
ACOK
DD
DD
OVP
UVP
OK
OV
2.5V
OCP
1.5V
SENSE
1 or AC
PWRON
OCP
OVP
UVP
ACOK
ORFETOK
SHAREOK
RESET
V
V
PENOK
CONTROL
DD
DD
LINES
Figure 23. Block Diagram of Protection and General Logic
CONFIGURE
REGISTERS)
OK
OV
REGISTERS
SENSE
CONTROL
(WRITE
2 is true
INTERFACE
GENERAL
LOGIC
SERIAL
CONFIGURE
REGISTERS)
STATUS
(READ
Rev. A | Page 31 of 64
I/Os
CLOCK
AC_OK
DC_OK
MON5
MON1
MON2
MON3
MON4
PSON
V
PEN
CBD
SCL
PEN
REF
CS
In the preceding example, MON2 and MON3 are configured to
monitor a negative 12 V rail. MON2 is configured as negative
going OVP, and MON3 is configured as positive going UVP.
The 5 V power rail is used for bias voltage.
2.5V
1.25V
Figure 22. Example of MON Pin Configuration
+5V
V
1
CC
7
MON2
MON3
MON5
10
16
18
18
10
16
17
16
18
18
17
11
12
14
13
15
9
THERMISTOR
OTP/
MON5
MON1
MON2
MON3
MON4
PSON
V
AC_OK
DC_OK
CBD/ALERT
PEN
SDA/
PS
SCL/
AC_OKLink
ADD0
–12V
REF
ON
LINK
ADM1041