ADM1041-EVAL Analog Devices Inc, ADM1041-EVAL Datasheet - Page 15

• 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

Pin No.
10
11
12
13
14
15
16
17
18
19
20
Mnemonic
AC
CBD/ALERT
PEN
SCL/AC_OKLink
SDA/PS
ADD0
PSON/MON3
DC_OK/MON4
V
F
V
G
REF
S
–/SHRS–
SENSE
/AC_OK/OTP/MON5
2/MON2
ON
LINK
Description
AC/Bulk Sense Input 2 or Monitor 2 Input.
AC
that used for the OrFET. It also allows dc and opto-coupled signals that are not suitable for the OrFET
control.
MON2: When MON2 is selected for this pin, its input is compared against a 1.25 V comparator that
could be used for monitoring a post regulated output; includes overvoltage, undervoltage, and
overtemperature conditions.
CBD: The crowbar drive pin allows implementation of a fast shutdown in case of a load overvoltage
fault. The pin can be configured as an open-drain N-channel or P-channel and is suitable for driving a
sensitive gate SCR crowbar. An external transistor is required if a high gate current is needed. Either
polarity may be selected.
ALERT: This pin can be configured to provide an ALERT function in microprocessor-supported
applications whereby any of several ICs in a redundant system that detects a problem can interrupt
and shut down the power supply. An alternative use is as a general-purpose logic output signal.
Power Enable. This pin can be configured as an open-drain N-channel or P-channel that typically
drives the PEN optocoupler. Providing that the PSON pin has been asserted to turn the output on, and
that there are no faults, this pin drives an optocoupler on enabling the primary PWM circuit. Either
polarity may be selected.
SCL: SMBus Serial Clock Input.
AC_OKLink: In non-microprocessor applications, this pin can be programmed to give the status of
AC
the sense circuit monitoring ac or bulk dc detects a low voltage.
SDA: SMBus Serial Data Input and Output.
PS
status to other ICs. This allows just one IC to be the PSON interface to the host system, or the PS
itself can be the PSON interface.
Chip Address Pin. There are three addresses possible using this pin, which are achieved by tying ADD0
to ground, tying to V
device/daughter card level so the total number of addressable ICs can be increased to six.
PSON: In non-microprocessor configurations, this is power supply on. As a standard I/O, this pin is
rugged enough for direct interface with a customer’s system. Either polarity may be selected.
MON3: When MON3 is selected for this pin, its input is compared against a 1.25 V comparator that
could be used for monitoring a post-regulated output; includes overvoltage, undervoltage, and
overtemperature conditions.
DC_OK: This pin is the output of a general-purpose digital I/O that can be configured as open-drain
N-channel or open-drain P-channel suitable for wire-ORing with other ICs and direct interfacing with a
customer’s system. Either polarity may be selected.
MON4: When MON4 is selected for this pin, its input is compared against a 1.25 V comparator that
could be used for overtemperature protection and for monitoring a post-regulated output; includes
overvoltage, undervoltage, and overtemperature conditions.
Voltage Reference, Buffered Output, Overtemperature Protection, or Monitor 5.
V
monitored, and if the voltage falls below 2.0 V, PEN is disabled. Forcing this pin's voltage does not
affect the integrity of the internal reference.
AC_OK: This option can be configured as N-channel or P-channel and as normal or inverted polarity.
At system level, a true AC_OK is used to indicate that the primary bulk voltage is high enough to
support the system, and when false, that dc output is about to fail.
MON5: A further option is to configure this as an analog input, MON5, with a flexible hysteresis and
trimmable 2.5 V reference that makes this pin particularly suitable for overtemperature protection
(OTP) sensing. Since hysteresis uses a switched 100 µA current source, hysteresis can be adjusted via
the source impedance of the external circuit. It can also be used for overvoltage and undervoltage
functions.
FET Gate Enable. When supporting an OrFET circuit, this is the gate drive pin. Since the open-drain
voltage on the chip is limited to V
voltages suitable for the OrFET. This pin is configured as an open-drain N-channel. Either output
polarity, low = on or low = off, may be selected.
This pin is used as the ground input reference for the current share and load voltage sense circuits. It
should be tied to ground at the common remote sense location. The input impedance is about 35 kΩ
to ground.
REF
ON
SENSE
SENSE
: This is a 2.5 V precision reference voltage capable of sourcing 2 mA. This function is continuously
LINK: In non-microprocessor applications, this pin can be programmed to provide the PSON
2: This alternative AC
to all the ICs on the same bus. The main effect is to turn on undervoltage blanking whenever
DD
, or being left to float. One address bit is available via programming at the
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SENSE
input can be used when the AC
DD
, an external level shifter is required to drive the higher gate
SENSE
source must be different from
ADM1041
ON
LINK