For more information, please visit the product page.
a division of CUI INC
date
10/2010
page
1 of 19
MODEL: NDM1-12-120
DESCRIPTION:
NON-ISOLATED DIGITAL DC-DC
POL CONVERTER
FEATURES
•Compact package
(0.5” x 0.925” x 0.46“)
•12 A output
•High efficiency, 95%
•8.5 ~ 14 V input range
•0.6 ~ 2.5 V output range
•Auto-control™ technology
•Through-hole
•PMBus compliant
•Voltage/current/temperature
monitoring
•Programmable output voltages
•Voltage margining
•Differential voltage sense
•Synchronize controllers for
phase spreading operations
•Programmable soft start and
soft stop
•Pre-bias startup
•Input under voltage lockout
•Output over voltage protection
•Output over current protection
•Fast over current protection
•Over temperature protection
RoHS
CONTENTS
Absolute Maximum.....................................................2
Electrical Specification.............................................2 ~ 5
Pin Descriptions..........................................................4
Typical Characteristics (0.6V/12A)..............................6
Typical Characteristics (1.0V/12A)..............................7
Typical Characteristics (2.5V/12A)..............................8
Mechanical Specification............................................9
Operating Information - Power Management
Input Filtering...............................................10
Output Capacitance.......................................10
Auto Control™...............................................10
Remote Sensing............................................11
Output On/Off Control..................................11
Powergood Signal.........................................11
Startup with Pre-Bias.....................................11
Sync Function...............................................12
Output Voltage Trimming..............................12
Startup Delay and Ramp Up Time..................12
Output Voltage Sequencing..........................13
Margining...................................................14
Power Fault Management
Input Undervoltage Lockout (UVLO)..............14
Output Overvoltage Lockout (OVP)................14
Output Overcurrent Protection (OCP).............14
Output Lethal Current Protection (LCP).........15
Over Temperature Protection (OTP)................15
Configuration Inputs
Configuration Using Down Resistors.............16
Configuration Input Vset...............................16
Configuration Inputs ADDR1 and ADDR2.......17
Supported PMBus Commands...................................18
Through-hole Soldering Information.........................18
20050
SW
112
th
Ave. Tualatin, Oregon
97062
phone
503.612.2300
fax
503.612.2382
www.novumdigital.com
For more information, please visit the product page.
a division of CUI INC
date
10/2010
page
2 of 19
MODEL: NDM1-12-120
DESCRIPTION:
NON-ISOLATED DIGITAL DC-DC
POL CONVERTER
ABSOLUTE MAXIMUM RATINGS
characteristics
VIN
VOUT
IOUT
Logic IO Voltage
Ground Voltage
Analog Pin Voltage
Operating ambient
Storage temp.
-55
Input voltage
Output voltage
Output current
SYNC, PG, FAULT, CTRL, SLART, SDA, SCL
GND
VOUT, VSET, CRC, SENSE+, SENSE-, ADDR1, ADDR2
-0.3
-0.3
-0.3
TBD
125
°C
min
8
0.5
nom
max
15
2.8
20
5.5
+0.3
5.5
units
V
V
A
V
V
V
INPUT / SUPPLY
parameter
voltage
idle current
sysgood, no output, V
IN
= 12 V
conditions/description
min
8.5
nom
12
max
14
50
units
V
mA
OUTPUT
parameter
voltage adjustment range
voltage margin range
1
voltage accuracy
voltage ripple
current range
line regulation
load regulation
SENSE+ input bias current
SENSE- input bias current
ramp-up time
ON time delay range
start-up time
load transient voltage deviation
load transient recovery time
recommended minimum
output capacitor
1.Voltage absolute maximum of 2.8 V
conditions/description
set using PMBus
0.6 V
≤
Vout < 1.2
1.2 V
≤
Vout < 2.5
min
0.6
-20
nom
5
±3
±2
8
max
2.5
20
units
V
%
%
%
25
12
1
1
mVp-p
A
%
%
μA
μA
ms
ms
ms
mV
μs
μF
0
V
IN
= 8.5 ~ 14 V
V
IN
= 12 V
SENSE+ = 4V
SENSE- = 0.1V
adjustable via PMBUS
adjustable via PMBUS
C
O
= 500
μF
V
IN
= 12 V, C
O
= 500
μF
, V
O
= 1 V, 50% load step
ceramic
500
-1
-1
864
20
0.5
0
±35
1,000
25
1,185
30
147.5
1,000
50
100
20050
SW
112
th
Ave. Tualatin, Oregon
97062
phone
503.612.2300
fax
503.612.2382
www.novumdigital.com
For more information, please visit the product page.
a division of CUI INC
date
10/2010
page
3 of 19
MODEL: NDM1-12-120
DESCRIPTION:
NON-ISOLATED DIGITAL DC-DC
POL CONVERTER
GENERAL / POWER / EFFICIENCY
parameter
output power
efficiency
V
IN
V
IN
V
IN
V
IN
=
=
=
=
12
12
12
12
V,
V,
V,
V,
V
O
V
O
V
O
V
O
=
=
=
=
1 V, 50% of maximum I
O
1 V, maximum I
O
2.5 V, 50% of maximum I
O
2.5 V, maximum I
O
conditions/description
min
0
92.2
89.0
94.9
93.4
0.6
500
nom
max
30
units
W
%
%
idle power
switching frequency
sysgood, no output, V
IN
= 12 V
W
kHz
FAULT PROTECTION
parameter
power good range
over voltage threshold (OVP)
over current threshold (OCP)
fast current protection (LCP)
threshold
fast current protection (LCP)
set point accuracy
fast current protection (LCP)
delay
thermal protection threshold
(OTP)
thermal protection hysteresis
adjustable via PMBUS
adjustable via PMBUS
must be 2x OCP
-20
0.2
-40
105
15
conditions/description
min
-10
nom
max
10
3.8
20
40
20
0.25
125
units
%nom
V
A
A
%
μs
°C
°C
20050
SW
112
th
Ave. Tualatin, Oregon
97062
phone
503.612.2300
fax
503.612.2382
www.novumdigital.com
For more information, please visit the product page.
a division of CUI INC
date
10/2010
page
4 of 19
MODEL: NDM1-12-120
DESCRIPTION:
NON-ISOLATED DIGITAL DC-DC
POL CONVERTER
COMMUNICATION CONNECTIONS
symbol
n/c
SENSE+
SENSE-
n/c
ADDR2
ADDR1
VSET
CRC
SYNC
PG
pin
1
2
3
4
5
6
7
8
9
10
IO type
--
Analog I
Analog I
--
Analog I
Analog I
Analog I
Analog I
Digital IO (pull-up)
Digital IO (pull-up)
nominal operating voltage
--
0 ~ 2.8 V
0 ~ 0.1 V
--
Resistor
Resistor
Resistor
-0.1 ~ 0.1 V
3.3 V
3.3 V
No connect
Output voltage positive sense input
Output voltage negative sense input
No connect
Address setting for serial communication/configuration
Address setting for serial communication/configuration
Output voltage setpoint configuration pin
Return path for external setting resistors (VSET, ADDR1, ADDR2)
Frequency sync. port. Controller can be configured as master or slave.
Power Good. Indicates output voltage rail is within regulation. Goes low
under any fault condition or recognition of shutdown request. May be
used to cascade (sequence) VR start-up in combination with SYSG pin (on
following VRs).
Fault output. Wired and Internal pull-up. Goes low under any fault condi-
tion (UVLO, OCP, OVP, OTP). When pulled low controller is disabled
and restarts again when released. Used for fault management between
multiple POLs
Control or Enable pin. No internal pull-up resistor.
Alert line. Communicates fault or pending fault alert to master or host
system power manager.
SMBus compatible data serial input/output.
SMBus compatible clock serial input.
No connect
Supply voltage for driver
Supply voltage for controller
description
FAULT
11
Digital IO (pull-up)
3.3 V
CTRL
SALRT
SDA
SCL
n/c
5V
3.3V
12
13
14
15
16
17
18
Digital IO
Digital IO
Digital IO
Digital IO
--
Power in
Power in
3.3 V
3.3 V
3.3 V
3.3 V
--
5 V in
3.3 V in
POWER CONNECTIONS
symbol
VIN
GND
VOUT
pin
19~20
21~22
23~24
IO type
Power
Ground
Power
nominal operating voltage
8.5 ~ 14 V
--
0.6 ~ 2.5 V
description
Input voltage
Power ground
Output voltage
LOGIC INPUT/OUTPUT CHARACTERISTICS
parameter
input high voltage (V
IH
)
input low voltage (V
IL
)
output high voltage (V
OH
)
output low voltage (V
OL
)
conditions/description
CTRL, SCL, SDA, SYNC, PG, FAULT
CTRL, SCL, SDA, SYNC, PG, FAULT
SALRT, SCL, SDA, SYNC, PG, FAULT
SALRT, SCL, SDA, SYNC, PG, FAULT
2.25
0.4
min
2
0.8
nom
max
units
V
V
V
V
20050
SW
112
th
Ave. Tualatin, Oregon
97062
phone
503.612.2300
fax
503.612.2382
www.novumdigital.com
For more information, please visit the product page.
a division of CUI INC
date
10/2010
page
5 of 19
MODEL: NDM1-12-120
DESCRIPTION:
NON-ISOLATED DIGITAL DC-DC
POL CONVERTER
PMBUS
parameter
setup time, SMBus (t
set
)
hold time, SMBus (t
hold
)
conditions/description
min
300
250
nom
max
units
ns
ns
ANALOG SIGNALS
parameter
analog IO
analog IO
conditions/description
SENSE+
SENSE-
min
0
0
nom
max
2.8
0.1
units
V
V
POWER MANAGEMENT FEATURES
parameter
number of addressable devices
input UVLO turn-on threshold
input UVLO turn-off threshold
PMBUS input voltage
monitoring accuracy
PMBUS output voltage
monitoring accuracy
PMBUS output current
monitoring accuracy
PMBUS temperature
monitoring accuracy
0.6 V
≤
Vout < 2.0, Io
≥
6 A
2.0 V
≤
Vout < 2.5, Io
≥
6 A
-5
-170
-30
±12%
±15%
5
°C
conditions/description
min
1
8.5
8.1
170
30
nom
max
113
units
devices
V
V
mV
mV
20050
SW
112
th
Ave. Tualatin, Oregon
97062
phone
503.612.2300
fax
503.612.2382
www.novumdigital.com
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