NNL10 SERIES
Non-Isolated DC/DC Converters
SELECTION GUIDE
1
Nominal
Input
Voltage
Output
Voltage
Output
Current
Min
Load
Full
Load
MAX
Output
Power
Nominal
Efficiency
Min
Order Code
NNL10-1
NNL10-2
NNL10-3
V
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
V
0.9
1.0
1.2
1.5
1.8
2.0
2.5
3.3
0.9
1.0
1.2
1.5
1.8
2.0
2.5
3.3
A
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
A
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
W
9.0
10.0
12.0
15.0
18.0
20.0
25.0
33.0
9.0
10.0
12.0
15.0
18.0
20.0
25.0
33.0
%
79.7
81.8
84.3
86.5
88.2
89.2
91.2
92.1
79.7
81.8
84.3
86.5
88.2
89.2
91.2
92.1
FEATURES
■
Industry Standard Footprint
■
Short Circuit Protection
■
High Efficiency
■
Under Voltage Lock Out
■
Output Voltage Trimming
■
Operating Temperature Range
–40°C to 85°C
■
SMD Construction
■
Optional DC OK Signal
■
Options available without Trim and
Remote Sense Functionality
DESCRIPTION
The NNL10 series is part of a range of non-
isolated, cost effective DC/DC converters
offering high precision output voltages from a
nominal 3.0–5.5 or 10.0–14.0 intermediate
bus where isolation is not required. Available
in both SMD and SIP mechanical formats.
NNL10-4
NNL10-5
NNL10-6
NNL10-7
NNL10-8
NNL10-9
NNL10-10
With DCOK
NNL10-11
NNL10-12
NNL10-13
NNL10-14
NNL10-15
NNL10-16
INPUT CHARACTERISTICS
1
Parameter
Conditions
MIN
TYP
MAX
Units
Voltage Range
Under Voltage
Lock Out
Reflected Ripple
Current
Input No Load V
IN
= 5.5V V
OUT
= 0.9V
Current
V
IN
= 5.5V V
OUT
= 3.3V
Input Standby
V
IN
= 5.5V Module Disabled
Current
V
NOM
= 4.0V
DC
V
OUT
< 2.75V
V
NOM
= 4.0V
DC
V
OUT
> 3.0V
Turn On Threshold V
NOM
= 4.0V
DC
Turn Off Threshold V
NOM
= 4.0V
DC
3.0
4.0
2.8
2.7
30
100
140
1.5
5.5
5.5
V
V
mA p-p
mA
mA
OUTPUT CHARACTERISTICS
1
Parameter
Conditions
MIN
TYP
MAX
Units
Rated Current
Voltage Set
Point Accuracy
Line Regulation
Load Regulation
Ripple & Noise
Voltage Trim
Remote Sense
Transient
Response
External Load
Capaitance
T
A
= –40°C to 85°C
(see thermal performance characteristics)
1.0
Low line to high line
0% load to 100% load
BW = DC to 20MHz
-10
I
OUT
= 5.0A–10.0A–5.0A, Peak Deviation
C
OUT
= 1µF//10µF
Settling Time
100
70
10,000
0.5
25
10.0
2.0
1.0
0.55
50
+10
0.5
A
%
%
%
mVp-p
%V
OUT
V
mV
µs
µF
1 Specifications typical at T
A
=25°C, nominal input voltage and rated output current unless otherwise specified.
www.cdpoweronline.com
Other customer specified options are available on request. Standard parts are supplied with Remote Sense and
Voltage Trim functions. Please contact your sales representative or C&D Technologies account manager for
further details.
1
NNL10 SERIES
Non-Isolated DC/DC Converters
GENERAL CHARACTERISTICS
1
Parameter
Conditions
MIN
TYP
MAX
Units
ABSOLUTE MAXIMUM RATINGS
300
4.0
0
2.6
-500
TBA
0.3
100
kHz
ms
V
µA
V
µA
kHrs
Short circuit protection
Remote Sense
DC OK
Remote ON/OFF
Trim
Input Voltage V
IN
Minimum load
Continuous
V
OUT
±0.5V
DC
-0.2Vdc to +17V
DC
20mA
-0.2V
DC
to +17V
DC
-0.3V
DC
to V
OUT
6.5V
DC
0%
Switching Frequency
Start Delay
Remote On/Off
From power on/remote off
Module On (or pin unconnected)
Module Off
MTTF
ENVIRONMENTAL
1
Parameter
Conditions
MIN
TYP
MAX
Units
Operation
Over Temperature Protection
Storage
See thermal performance
characteristics
Substrate temperature
–40
115
–55
85
125
°C
°C
°C
OUTPUT VOLTAGE TRIMMING
The trimming input on the NNL10 allows output voltage adjustment by +/-10% of nominal output voltage by
connection of a resistor or by application of a voltage to the Trim pin.
R
INTERNAL
VALUES
V
OUT SET
R
INTERNAL
FIG.1
(kOhm)
5.1
30.1
59.0
100.0
100.0
100.0
78.7
59.0
FIG.2
(V)
0.9
1.0
1.2
1.5
1.8
2.0
2.5
3.3
V
IN
NNL10
TRIM
R
TRIM
V
OUT
V
IN
R
TRIM
NNL10
TRIM
V
OUT
GND
GND
To increase the output voltage, an external resistor (Fig. 1) or voltage
source should be connected between the Trim pin and GND pin.
R
TRIM–UP
=
24.080
∆V
OUT
– R
INTERNAL
KΩ
V
TRIM–UP
= 0.8 –
∆V
OUT
x R
INTERNAL
30.100
∆Vout
is the required change in output voltage in V
To decrease the output voltage, an external resistor (Fig. 2) or voltage source should be connected between
the Trim pin and the V
OUT
pin.
R
TRIM–DOWN
=
V
OUT
–0.8
–1 x 30.100 – R
INTERNAL
KΩ
∆V
OUT
V
TRIM–DOWN
= 0.8 +
∆V
OUT
x
R
INTERNAL
30.100
The trim pin should be left disconnected if not used.
2
NNL10 SERIES
Non-Isolated DC/DC Converters
REMOTE SENSE
FIG.3
V
IN
NNL10
V
OUT
SENSE
GND
LOAD
The remote sense function compensates for voltage drops from the
output of the NNL10 to the load point by regulating the output volt-
age at the load point. The voltage drop must not exceed 0.5V,
although Trim and remote sense functions can be used in combina-
tion with each other, the maximum voltage increase is 0.5V.
When increasing the output voltage the maximum output power of
the NNL10 must not exceed the maximum output figures stated in
the selection guide.
OUTPUT SEQUENCING
To simplify output sequencing, the
NNL10 series offers an optional single
wire interconnection that performs this
function. Using this connection, up to
four devices can be 'daisy chained'
together, with the 'DC OK' signal from
one converter signifying that the next
converter can be enabled. A
capacitor, simply connected to the
daisy chain link, provides a settable
delay in the sequence of the
converters starting.
Typical capacitor values and
corresponding delays are shown in
the table below.
Figure 4 shows a typical sequencing
configuration, along with the voltage
outputs that it produces. As well as
reducing component count, making
use of the 'built-in' sequencing
capability means that only a single
PCB track is required for a full
sequencing solution.
V
IN
3.0V
DC
5.5V
DC
Capacitor Value
0.22µF
0.22µF
Delay
1.8mS
0.6mS
FIG.4
V
OUT 1
Bus Voltage
V
IN
DC OK
T
PRESET
V
OUT 2
ON/OFF
V
IN
V
OUT 2
V
OUT 1
V
OUT 3
ON/OFF
V
IN
DC OK
T
PRESET
+ T
CAP
V
OUT 4
ON/OFF
V
IN
V
OUT 4
V
OUT 3
Capacitor
3
NNL10 SERIES
Non-Isolated DC/DC Converters
EFFICIENCY v LOAD GRAPHS (NNL10 V
NOM
= 4.0V
DC
)
V
OUT
= 0.9V
V
OUT
= 1.0V
V
OUT
= 1.2V
V
OUT
= 1.5V
V
OUT
= 1.8V
V
OUT
= 2.0V
V
OUT
= 2.5V
V
OUT
= 3.3V
4
NNL10 SERIES
Non-Isolated DC/DC Converters
THERMAL DERATING GRAPHS (NNL10 V
NOM
= 4.0V
DC
)
V
OUT
= 0.9V
V
OUT
= 1.0V
V
OUT
= 1.2V
V
OUT
= 1.5V
V
OUT
= 1.8V
V
OUT
= 2.0V
V
OUT
= 2.5V
V
OUT
= 3.3V
5