Data Sheet
April 2008
NH033x-L and NH050x-L Series Power Modules:
5 Vdc Input; 1.2 Vdc to 3.3 Vdc Output; 10 A and 15 A
The NH033x-L and NH050x-L Series Power Modules use
advanced, surface-mount technology and deliver high-qual-
ity, compact, dc-dc conversion at an economical price.
Applications
nDistributed power architectures
nServers
nWorkstations
nDesktop computers
Features
nSmall size: 69.9 mm x 25.4 mm x 8.6 mm
(2.75 in. x 1.00 in. x 0.34 in.)
nNon-isolated output
nConstant frequency
nHigh efficiency: 91% typical
nOvercurrent protection
nRemote on/off
nOutput voltage adjustment:
90% to 110% of VO, nom: VO Š 2.5 V
100% to 120% of VO, nom: VO < 2.5 V
nOvertemperature protection
nRemote sense
nUL* 60950 Recognized, CSA C22.2 No. 60950-
00 Certified, VDE 0805 (IEC60950) Licensed
nMeets FCC Class A radiated limits
Options
nTight tolerance output
nShort pins: 2.79 mm ± 0.25 mm
(0.110 in. ± 0.010 in.)
Description
The NH033x-L and NH050x-L Series Power Modules are non-isolated dc-dc converters that operate over an
input voltage range of 4.5 Vdc to 5.5 Vdc and provide a regulated output between 1.2 V and 3.3 V. The open
frame power modules have a maximum output current rating of 10 A and 15 A, respectively, at typical full-load
efficiencies of 91%.
* UL is a registered trademark of Underwriters Laboratories, Inc.
CSA is a registered trademark of Canadian Standards Association.
NH033x-L and NH050x-L Series Power Modules: Data Sheet
5 Vdc Input; 1.2 Vdc to 3.3 Vdc Output; 10 A and 15 A April 2008
2Lineage Power
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso-
lute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess
of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended
periods can adversely affect device reliability.
* Forced convection—200 lfpm minimum. Higher ambient temperatures possible with increased airflow and/or decreased power output. See the
Thermal Considerations section for more details.
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions.
Table 1. Input Specifications
Fusing Considerations
CAUTION: This power module is not internally fused. An input line fuse must always be used.
This power module can be used in a wide variety of applications, ranging from simple stand-alone operation to an
integrated part of a sophisticated power architecture. To preserve maximum flexibility, internal fusing is not
included; however, to achieve maximum safety and system protection, always use an input line fuse. The safety
agencies require a normal-blow fuse with a maximum rating of 20 A (see Safety Considerations section). Based on
the information provided in this data sheet on inrush energy and maximum dc input current, the same type of fuse
with a lower rating can be used. Refer to the fuse manufacturer’s data for further information.
Parameter Device Symbol Min Max Unit
Input Voltage (continuous) All VI—7.0Vdc
On/Off Terminal Voltage All Von/off —6.0Vdc
Operating Ambient Temperature*:
NH033x-L
NH050x-L
All
All
TA
TA
0
0
62
49
°C
°C
Storage Temperature All Tstg –55 125 °C
Parameter Symbol Min Typ Max Unit
Operating Input Voltage:
Start-up
Continuous Operation
VI
VI
4.75
4.5
5.0
5.5
Vdc
Vdc
Maximum Input Current
(VI = 0 V to 5.5 V; IO = IO, max; see Figures 1—8.):
NH033x-L
NH050x-L
II, max
II, max
10
16
A
A
Input Reflected-ripple Current, Peak-to-peak
(5 Hz to 20 MHz, 500 nH source impedance;
see Figure 33.)
II—300—mAp-p
Input Ripple Rejection (120 Hz) 60 dB
Data Sheet NH033x-L and NH050x-L Series Power Modules:
April 2008 5 Vdc Input; 1.2 Vdc to 3.3 Vdc Output; 10 A and 15 A
Lineage Power 3
Electrical Specifications (continued)
Table 2. Output Specifications
Parameter Device Symbol Min Typ Max Unit
Output Voltage Set Point
(VI = 5.0 V; IO = IO, max; TA = 25 °C)
NH0xxM-L
NH0xxS1R8-L
NH0xxG-L
NH0xxF-L
VO, set
VO, set
VO, set
VO, set
1.45
1.74
2.42
3.18
1.5
1.8
2.5
3.3
1.55
1.86
2.58
3.39
Vdc
Vdc
Vdc
Vdc
Output Voltage
(Over all operating input voltage,
resistive load, and temperature
conditions until end of life; see
Figure 35.)
NH0xxM-L
NH0xxS1R8-L
NH0xxG-L
NH0xxF-L
VO
VO
VO
VO
1.43
1.71
2.40
3.16
1.58
1.89
2.60
3.44
Vdc
Vdc
Vdc
Vdc
Output Regulation:
Line (VI = 4.5 V to 5.5 V)
Load (IO = 0 to IO, max)
Temperature (TA = 0 °C to 50 °C)
All
All
All
0.1
0.1
0.3
0.3
17
%VO
%VO
mV
Output Ripple and Noise Voltage
(See Figure 34.):
RMS
Peak-to-peak (5 Hz to 20 MHz) All
All
25
100
mVrms
mVp-p
External Load Capacitance
(See Design Considerations section.)
All 0 15,000 µF
Output Current
(See Derating Curves Figures 50 and
51.)
NH033x-L
NH050x-L
IO
IO
0
0
10.0
15.0
A
A
Output Current-limit Inception
(VO = 90% of VO, set; TQ32 = 80 °C;
see Feature Descriptions section.)
All IO103 200 %IO, max
Output Short-circuit Current All IO—170—%IO, max
Efficiency
(VI = 5.0 V; IO = IO, max; TA = 25 °C;
see Figure 35.)
NH033M-L
NH033S1R8-L
NH033G-L
NH033F-L
NH050M-L
NH050S1R8-L
NH050G-L
NH050F-L
η
η
η
η
η
η
η
η
80
82
87
90
77
81
85
89
83
85
89
92
81
83
87
90.5
%
%
%
%
%
%
%
%
Switching Frequency All 265 kHz
Dynamic Response
(ΔIO/Δt = 1 A/10 µs, VI = 5.0 V,
TA = 25 °C):
Load Change from IO = 0% to 100% of
IO, max:
Peak Deviation
Settling Time (VO < 10% peak
deviation)
Load Change from IO = 100% to 0% of
IO, max:
Peak Deviation
Settling Time (VO < 10% peak
deviation)
All
All
All
All
20
200
20
200
mV
µs
mV
µs
NH033x-L and NH050x-L Series Power Modules: Data Sheet
5 Vdc Input; 1.2 Vdc to 3.3 Vdc Output; 10 A and 15 A April 2008
4Lineage Power
General Specifications
Cleanliness Requirements
The open frame (no case or potting) power modules meet specification J-STD-001B. These requirements state
that any solder balls must be attached and their size should not compromise the minimum electrical spacing of the
power module.
The cleanliness designator of the open frame power module is C00 (per J specification).
Feature Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions. See Feature Descriptions and Design Considerations sections for further information.
* Total adjustment of trim and remote sense combined should not exceed 10% for VO 2.5 V or 20% for VO < 2.5 V.
Parameter Min Typ Max Unit
Calculated MTBF (IO = 80% of IO, max; TA = 40 °C) 1,300,000 hours
Weight 14 (0.5) g (oz.)
Parameter Symbol Min Typ Max Unit
Remote On/Off Signal Interface
(VI = 4.5 V to 5.5 V; open collector pnp transistor or
equivalent; signal referenced to GND pin; see Figure 38
and Feature Descriptions section.):
Logic Low (ON/OFF pin open)—Module On:
Ion/off = 0.0 µA
Von/off = 0.3 V
Logic High (Von/off > 2.8 V)—Module Off:
Ion/off = 10 mA
Von/off = 5.5 V
Turn-on Time (IO = IO, max; VO within ±1% of steady
state; see Figures 25—32.)
Von/off
Ion/off
Von/off
Ion/off
–0.7
3.0
0.3
50
6.0
10
V
µA
V
mA
ms
Output Voltage Adjustment*
(See Feature Descriptions section.):
Output Voltage Remote-sense Range:
For VO 2.5 V
For VO < 2.5 V
Output Voltage Set-point Adjustment Range (Trim):
For VO 2.5 V
For VO < 2.5 V
VTRIM
VTRIM
90
100
10
20
110
120
% VO, nom
% VO, nom
% VO, nom
% VO, nom
Overtemperature Protection (shutdown)
(See Feature Descriptions section.)
TQ32 115 120 °C
Lineage Power 5
Data Sheet NH033x-L and NH050x-L Series Power Modules:
April 2008 5 Vdc Input; 1.2 Vdc to 3.3 Vdc Output; 10 A and 15 A
Characteristics Curves
8-2415
Figure 1. NH033M-L Input Characteristics,
TA = 25 °C
8-2419
Figure 2. NH050M-L Input Characteristics,
TA = 25 °C
8-2416
Figure 3. NH033S1R8-L Input Characteristics,
TA = 25 °C
8-2420
Figure 4. NH050S1R8-L Input Characteristics,
TA = 25 °C
8-2414
Figure 5. NH033G-L Input Characteristics,
TA = 25 °C
8-2418
Figure 6. NH050G-L Input Characteristics,
TA = 25 °C
0.5 1.5 2.5 3.0 3.5 4.0
0
3
INPUT VOLTAGE, V I (V)
2
4
5.50.0
1
4.5 5.0
5
6
1.0 2.0
INPUT CURRENT, II (A)
IO = 10 A
1.0 2.0 3.0 4.0
3.5 4.5
0
6
INPUT VOLTAGE, VI (V)
4
3
5
5.0
8
5.50.0
7
2
1
9
10
1.5 2.5
IO = 15 A
0.5
INPUT CURRENT, II (A)
0.5 1.0 3.0 3.5 4.0 4.5
0
5
INPUT VOLTAGE, V I (V)
3
2
4
7
5.00.0
6
1
2.0 2.51.5
IO = 10 A
5.5
INPUT CURRENT, II (A)
0.5 1.5 2.5 3.0 3.5 4.0
0
6
INPUT VOLTAGE, V I (V)
4
8
5.50.0
2
4.5 5.0
10
12
1.0 2.0
INPUT CURRENT, II (A)
IO = 15 A
8
7
2
1.51.0 3.5 4.0 4.5 5.0
0
INPUT VOLTAGE, V I (V)
4
6
1
9
5.50.0 2.5 3.02.0
5
INPUT CURRENT, II (A)
3
IO = 10 A
0.5
0.5 1.0 3.0 3.5 4.0 4.5
0
10
INPUT VOLTAGE, V
I
(V)
6
4
8
14
5.00.0
12
2
2.0 2.51.5 5.
5
INPUT CURRENT, I
I
(A)
I
O
= 15 A
6Lineage Power
NH033x-L and NH050x-L Series Power Modules: Data Sheet
5 Vdc Input; 1.2 Vdc to 3.3 Vdc Output; 10 A and 15 A April 2008
Characteristics Curves (continued)
8-2413(C)
Figure 7. NH033F-L Input Characteristics, T
A
= 25 °C
8-2417(C)
Figure 8. NH050F-L Input Characteristics, T
A
= 25 °C
8-2423(C)
Figure 9. NH033M-L Current Limit, TA = 25 °C
8-2427(C)
Figure 10. NH050M-L Current Limit, TA = 25 °C
8-2424(C)
Figure 11. NH033S1R8-L Current Limit, TA = 25 °C
8-2428(C)
Figure 12. NH050S1R8-L Current Limit, TA = 25 °C
7
3
2 3 5
4
0
6
4
5
2
1
8
60
9
IO = 10 A
INPUT VOLTAGE, VI (V)
INPUT CURRENT, II (A)
1
0.5 1.0 3.0 3.5 4.0 4.5
0
10
INPUT VOLTAGE, V
I (V)
6
4
8
14
5.00.0
12
2
2.0 2.51.5
IO = 15 A
5.
5
INPUT CURRENT, II
(A)
0.4
OUTPUT VOLTAGE, VO (V)
2 4 12 14 16
0.0
OUTPUT CURRENT, I
O (A)
0.6
1.2
0.2
1.6
810613 5 7911131517
1.0
1.4
18 19
VI = 5.0 V
0
0.8
1.2
0.2
6
0.0
OUTPUT CURRENT, I
O (A)
0.6
1.0
18
0.4
0.8
1.6
8 1012 14 16 2426
2
OUTPUT VOLTAGE, VO (V)
4 20 22
VI = 5.0 (V)
0
1.4
0.4
OUTPUT VOLTAGE, VO (V)
24 12
14 16
0.0
OUTPUT CURRENT, I
O (A)
0.6
1.0
0.2
1.8
0810613 57911 13 15 17 20
1.4
0.8
1.2
1.6
1819
VI = 5.0 V
OUTPUT VOLTAGE, VO (V)
1.2
0.2
6
0.0
OUTPUT CURRENT, I
O (A)
0.6
1.0
18
0.4
0.8
1.8
8 1012 14 16 2426
2 4 20 22
VI
= 5.0 (V)
0
1.4
1.6
Lineage Power 7
Data Sheet NH033x-L and NH050x-L Series Power Modules:
April 2008 5 Vdc Input; 1.2 Vdc to 3.3 Vdc Output; 10 A and 15 A
Characteristics Curves (continued)
8-2422(C)
Figure 13. NH033G-L Current Limit, TA = 25 °C
8-2426(C)
Figure 14. NH050G-L Current Limit, TA = 25 °C
8-2421(C)
Figure 15. NH033F-L Current Limit, TA = 25 °C
8-2425(C)
Figure 16. NH050F-L Current Limit, TA = 25 °C
8-2431(C)
Figure 17. NH033M-L Efficiency, TA = 25 °C
8-2435(C)
Figure 18. NH050M-L Efficiency, TA = 25 °C
OUTPUT VOLTAGE, VO (V)
2 4 12 14 16
0.0
OUTPUT CURRENT, I
O
(A)
1.5
0.5
2.5
810613 5 7911131517
1.0
2.0
18 19
VI = 5.0 V
0
0.5
0.0
OUTPUT CURRENT, I
O (A)
1.5
2.5
1.0
2.0
22 24
2
OUTPUT VOLTAGE, VO (V)
64 8101214161820
VI = 5.0 V
026 28
1.0
OUTPUT VOLTAGE, VO (V)
2 4 12 14 16
0.0
OUTPUT CURRENT, I
O (A)
1.5
2.5
0.5
3.5
81061 3 5 7 9 11131517
2.0
3.0
1819
VI = 5 V
0
0.5
0.0
OUTPUT CURRENT, I
O (A)
1.5
2.5
1.0
3.0
2.0
3.5
22 24
2
OUTPUT VOLTAGE, VO (V)
64 8 1012 141618 20
VI = 5.0 V
0
EFFICIENCY, η (%)
85.5
84.5
83.0
12 6789
82.0
OUTPUT CURRENT, IO
(A)
83.5
84.0
82.5
86.0
100 4 53
85.0
VI = 4.5 V
VI = 5.0 V
VI = 5.5 V
82
1 3 11 13
80
OUTPUT CURRENT, IO (A)
83
81
86
0 7 95 152 4 6 8 10 12 14
85
EFFICIENCY, η (%)
84
VI = 4.5 V
VI = 5.0V
VI = 5.5 V
8Lineage Power
NH033x-L and NH050x-L Series Power Modules: Data Sheet
5 Vdc Input; 1.2 Vdc to 3.3 Vdc Output; 10 A and 15 A April 2008
Characteristics Curves (continued)
8-2432(C)
Figure 19. NH033S1R8-L Efficiency, TA = 25 °C
8-2436(C)
Figure 20. NH050S1R8-L Efficiency, TA = 25 °C
8-2430(C)
Figure 21. NH033G-L Efficiency, TA = 25 °C
8-2434(C)
Figure 22. NH050G-L Efficiency, TA = 25 °C
8-2429(C)
Figure 23. NH033F-L Efficiency, TA = 25 °C
8-2433(C)
Figure 24. NH050F-L Efficiency, TA = 25 °C
EFFICIENCY, η (%)
12 6789
84.0
86.5
OUTPUT CURRENT, IO
(A)
85.5
85.0
86.0
87.5
100
87.0
84.5
4 53
VI = 4.5 V
VI = 5.0 V
VI = 5.5 V
83.5
84.5
86.5
85.5
1 3 11 13
82.0
OUTPUT CURRENT, IO (A)
82.5
87.0
0 7 95 152 4 6 8 10 12 14
EFFICIENCY, η (%)
VI = 4.5 V
VI = 5.0 V
VI = 5.5 V
83.0
84.0
86.0
85.0
EFFICIENCY, η (%)
12 6789
87.0
89.5
OUTPUT CURRENT, IO
(A)
88.5
88.0
89.0
90.5
0
90.0
87.5
4 53 10
VI = 4.5 V
VI = 5.0 V
VI = 5.5 V
87
1 3 11 13
85
OUTPUT CURRENT, IO (A)
88
86
91
0 7 95 152 4 6 8 10 12 14
90
EFFICIENCY, η (%)
VI = 4.5 V
VI = 5.0 V
VI = 5.5 V
89
12 6789
90.5
92.5
OUTPUT CURRENT, IO (A)
91.5
91.0
92.0
100
93.0
90.5
4 53
VI = 4.5 V
VI = 5.0 V
VI = 5.5 V
EFFICIENCY, η (%)
89.5
90.5
92.5
91.5
1 3 11 13
88.0
OUTPUT CURRENT, IO (A)
88.5
93.0
0 7 95 152 4 6 8 10 12 14
EFFICIENCY, η (%)
89.0
90.0
92.0
91.0
VI = 4.5 V
VI = 5.5 V
VI = 5.0 V
Lineage Power 9
Data Sheet NH033x-L and NH050x-L Series Power Modules:
April 2008 5 Vdc Input; 1.2 Vdc to 3.3 Vdc Output; 10 A and 15 A
Characteristics Curves (continued)
8-2439(C)
Figure 25. NH033M-L Typical Start-Up from Remote
On/Off, VI = 5 V, IO = 10 A
8-2442(C)
Figure 26. NH050M-L Typical Start-Up from Remote
On/Off, VI = 5 V, IO = 15 A
8-2440(C)
Figure 27. NH033S1R8-L Typical Start-Up from
Remote On/Off, VI = 5 V, IO = 10 A
8-2452(C)
Figure 28. NH050S1R8-L Typical Start-Up from
Remote On/Off, VI = 5 V, IO = 15 A
TIME, t (500 µs/div)TIME, t (500 µs/div)
OUTPUT VOLTAGE, VO (V)
(1 V/div.)
REMOTE ON/OFF,
VON/OFF (V)
TIME, t (500 µs/div)TIME, t (500 µs/div)
REMOTE ON/OFF,
V
ON/OFF
(V)
OUTPUT VOLTAGE, V
O
(V)
(500 mV/div.)
TIME, t (500 µs/div)TIME, t (500 µs/div)
REMOTE ON/OFF,
VON/OFF (V)
OUTPUT VOLTAGE, VO (V)
(1 V/div.)
TIME, t (500 µs/div)TIME, t (500 µs/div)
OUTPUT VOLTAGE, V
O
(V)
(1 V/div.)
REMOTE ON/OFF,
V
ON/OFF
(V)
NH033x-L and NH050x-L Series Power Modules: Data Sheet
5 Vdc Input; 1.2 Vdc to 3.3 Vdc Output; 10 A and 15 A April 2008
1010 Lineage Power
Characteristics Curves (continued)
8-2438(C)
Figure 29. NH033G-L Typical Start-Up from Remote
On/Off, VI = 5 V, IO = 10 A
8-2443(C)
Figure 30. NH050G-L Typical Start-Up from Remote
On/Off, VI = 5 V, IO = 15 A
8-2437(C)
Figure 31. NH033F-L Typical Start-Up from Remote
On/Off, VI = 5 V, IO = 10 A
8-2441(C)
Figure 32. NH050F-L Typical Start-Up from Remote
On/Off, VI = 5 V, IO = 15 A
TIME, t (500 µs/div)TIME, t (500 µs/div)
OUTPUT VOLTAGE, VO (V)
(1 V/div.)
REMOTE ON/OFF,
VON/OFF ( V)
TIME, t (500 µs/div)TIME, t (500 µs/div)
REMOTE ON/OFF,
VON/OFF (V)
OUTPUT VOLTAGE, VO (V)
(1 V/div.)
TIME, t (500 µs/div)
REMOTE ON/OFF,
VON/OFF (V)
OUTPUT VOLTAGE, VO (V)
(1 V/div.)
TIME, t (500 µs/div)TIME, t (500 µs/div)
OUTPUT VOLTAGE, VO (V)
(1 V/div.)
REMOTE ON/OFF,
VON/OFF ( V)
Data Sheet NH033x-L and NH050x-L Series Power Modules:
April 2008 5 Vdc Input; 1.2 Vdc to 3.3 Vdc Output; 10 A and 15 A
Lineage Power 11
Test Configurations
8-203(C).h
Note: Input reflected-ripple current is measured with a simulated
source impedance of 500 nH. Capacitor CS offsets possible
battery impedance. Current is measured at the input of the
module.
Figure 33. Input Reflected-Ripple Test Setup
8-513(C).r
Note: Use a 0.1 µF ceramic capacitor and a 1,000 µF aluminum or
tantalum capacitor (ESR = 0.05 ¾ @ 100 kHz). Scope mea-
surement should be made using a BNC socket. Position the
load between 50 mm and 80 mm (2 in. and 3 in.) from the
module.
Figure 34. Peak-to-Peak Output Noise
Measurement Test Setup
8-1173(C).a
Note: All measurements are taken at the module terminals. When
socketing, place Kelvin connections at module terminals to
avoid measurement errors due to socket contact resistance.
Figure 35. Output Voltage and Efficiency
Measurement Test Setup
Design Considerations
Input Source Impedance
The power module should be connected to a low ac-
impedance input source. Highly inductive source
impedances can affect the stability of the NH033x-L
and NH050x-L Series Power Modules. Adding external
capacitance close to the input pins of the module can
reduce the ac impedance and ensure system stability.
The minimum recommended input capacitance (C1) is
a 470 µF electrolytic capacitor with an ESR ð 0.02 Ω @
100 kHz. Verify the quality and layout of these capaci-
tors by ensuring that the ripple across the module input
pins is less than 1 Vp-p at IO = IO, max. (See Figures 33,
36, and 37.)
The 470 µF electrolytic capacitor (C1) should be added
across the input of the NH033x-L or NH050x-L to
ensure stability of the unit. The electrolytic capacitor
should be selected for ESR and RMS current ratings to
ensure safe operation in the case of a fault condition.
The input capacitor for the NH033x-L and NH050x-L
series should be rated to handle 10 Arms.
When using a tantalum input capacitor, take care not to
exceed the tantalum capacitor power rating because of
the capacitor’s failure mechanism (for example, a short
circuit).
8-1215(C).a
Figure 36. Setup with External Capacitor to Reduce
Input Ripple Voltage
To reduce the amount of ripple current fed back to the
input supply (input reflected-ripple current), an external
input filter can be added. Up to 10 µF of ceramic
capacitance (C2) may be externally connected to the
input of the NH033x-L or NH050x-L, provided the
source inductance (LSOURCE) is less than 1 µH (see
Figure 36).
TO OSCILLOSCOPE
500 µH
C
S
220 µF
ESR < 0.1 Ω
@ 20 ˚C, 100 kHz
V
I
(+)
BATTERY CI 470 µF
CURRENT
PROBE
L
TEST
ESR < 0.2 Ω
@ 100 kHz
GND
VO
1.0 µF RESISTIVE
LOAD
SCOPE
COPPER STRIP
1000 µF
GND
VIVO
IIIO
SUPPLY
CONTACT RESISTANCE
CONTACT AND
DISTRIBUTION LOSSES
LOAD
GND
SENSE(+)
SENSE(-)
ηVO IO×
VI II×
------------------------x100=%
TO OSCILLOSCOPE
1 µH (MAX)
C
2
V
I
GND
SUPPLY
CURRENT
PROBE
L
SOURCE
10 µF (MAX)
+
C
1
470 µF
NH033x-L and NH050x-L Series Power Modules: Data Sheet
5 Vdc Input; 1.2 Vdc to 3.3 Vdc Output; 10 A and 15 A April 2008
1212 Lineage Power
Design Considerations (continued)
Input Source Impedance (continued)
To further reduce the input reflected ripple current, a
filter inductor (LFILTER) can be connected between the
supply and the external input capacitors (see Figure
37). The filter inductor should be rated to handle the
maximum power module input current of 10 Adc for the
NH033x-L and 16 Adc for the NH050x-L.
If the amount of input reflected-ripple current is unac-
ceptable with an external L-C filter, more capacitance
may be added across the input supply to form a C-L-C
filter. For best results, the filter components should be
mounted close to the power module.
8-1216(C).a
Figure 37. Setup with External Input Filter to
Reduce Input Reflected-Ripple Current
and Ensure Stability
Output Capacitance
The NH033x-L and NH050x-L Series Power Modules
can be operated with large values of output capaci-
tance. In order to maintain stability, choose a capacitor
bank so that the product of their capacitance and ESR
is greater than 50 x 10–6 (e.g., 1,000 µF x 0.05 Ω =
50 x 10–6). For complex or very low ESR filters, consult
the Technical Support for stability analysis.
Safety Considerations
For safety-agency approval of the system in which the
power module is used, the power module must be
installed in compliance with the spacing and separation
requirements of the end-use safety agency standard,
i.e., UL 60950, CSA C22.2 No. 60950-00, and VDE
0805 (IEC60950).
For the converter output to be considered meeting the
requirements of safety extra-low voltage (SELV), the
input must meet SELV requirements.
The power module has extra-low voltage (ELV) outputs
when all inputs are ELV.
The input to these units is to be provided with a maxi-
mum 20 A normal-blow fuse in the ungrounded lead.
Feature Descriptions
Overcurrent Protection
To provide protection in a fault condition, the unit is
equipped with internal overcurrent protection. The unit
operates normally once the fault condition is removed.
Under some extreme overcurrent conditions, the unit
may latch off. Once the fault is removed, the unit can
be reset by toggling the remote on/off signal for one
second or by cycling the input power.
Remote On/Off
To turn the power module on and off, the user must
supply a switch to control the voltage at the ON/OFF
pin (Von/off). The switch should be an open collector pnp
transistor connected between the ON/OFF pin and the
VI pin or its equivalent (see Figure 38).
During a logic low when the ON/OFF pin is open, the
power module is on and the maximum Von/off generated
by the power module is 0.3 V. The maximum allowable
leakage current of the switch when Von/off = 0.3 V and
VI= 5.5 V (Vswitch = 5.2 V) is 50 µA.
During a logic high, when Von/off = 2.8 V to 5.5 V, the
power module is off and the maximum Ion/off is 10 mA.
The switch should maintain a logic high while sourcing
10 mA.
Leave the remote ON/OFF pin open if not using that
feature.
The module has internal capacitance to reduce noise
at the ON/OFF pin. Additional capacitance is not gen-
erally needed and may degrade the start-up character-
istics of the module.
TO OSCILLOSCOPE
C
1
V
I
GND
SUPPLY
CURRENT
PROBE
L
SOURCE
470 µF
L
FILTER
+
C
2
Data Sheet NH033x-L and NH050x-L Series Power Modules:
April 2008 5 Vdc Input; 1.2 Vdc to 3.3 Vdc Output; 10 A and 15 A
Lineage Power 13
Feature Descriptions (continued)
Remote On/Off (continued)
CAUTION: Never ground the ON/OFF pin. Ground-
ing the ON/OFF pin disables an impor-
tant safety feature and may damage the
module or the customer system.
8-1175(C).a
Figure 38. Remote On/Off Implementation
Remote Sense
Remote sense minimizes the effects of distribution
losses by regulating the voltage at the remote-sense
connections. The voltage between the remote-sense
pins and the output pins must not exceed the output
voltage sense range given in the Feature Specifications
table.
The voltage between the VO and GND pins must not
exceed 110% of VO, nom for VO 2.5 V or 120% of
VO, nom for VO < 2.5 V. This limit includes any increase
in voltage due to remote-sense compensation and out-
put voltage set-point adjustment (trim), see Figure 39.
If not using the remote-sense feature to regulate the out-
put at the point of load, connect SENSE(+) to VO and
SENSE(–) to GND at the module.
8-651(C).i
Figure 39. Effective Circuit Configuration for
Single-Module Remote-Sense Operation
Output Voltage Set-Point Adjustment
(Trim)
Output voltage set-point adjustment allows the output
voltage set point to be increased or decreased by con-
necting an external resistor between the TRIM pin and
either the SENSE(+) pin (decrease output voltage) or
SENSE(–) pin (increase output voltage). The trim
range for modules that produce 2.5 VO or greater is
±10% of VO, nom. The trim range for modules that pro-
duce less than 2.5 VO is +20%, –0%.
Connecting an external resistor (Rtrim-down) between the
TRIM and SENSE(+) pin decreases the output voltage
set point as defined in the following equation.
For the F (3.3 VO) module:
For the G (2.5 VO) module:
Note: Output voltages below 2.5 V cannot be trimmed
down.
Connecting an external resistor (Rtrim-up) between the
TRIM and SENSE(–) pins increases the output voltage
set point to VO, adj as defined in the following equation.
For the G (2.5 VO) module:
For all other modules:
Leave the TRIM pin open if not using that feature.
Overvoltage Protection
Overvoltage protection is not provided in the power
module. External circuitry is required to provide over-
voltage protection.
Vo
I
on/off
ON/OFF
V
I
GND
+
V
on/off
+
V
switch
VO
SENSE(+)
SENSE(-)
VI
IO
CONTACT AND
DISTRIBUTION LOSSES
II
CONTACT
RESISTANCE
GND
SUPPLY LOAD
Rtrim-down 18.23
VOVO adj,
------------------------------47.2
⎝⎠
⎛⎞
kΩ=
Rtrim-down 6.98
VOVO adj,
------------------------------24
⎝⎠
⎛⎞
kΩ=
Rtrim-up 28
VO adj,VO
------------------------------10
⎝⎠
⎛⎞
kΩ=
Rtrim-up 28
VO adj,VO
------------------------------33.2
⎝⎠
⎛⎞
kΩ=
NH033x-L and NH050x-L Series Power Modules: Data Sheet
5 Vdc Input; 1.2 Vdc to 3.3 Vdc Output; 10 A and 15 A April 2008
1414 Lineage Power
Feature Descriptions (continued)
Overtemperature Protection
To provide additional protection in a fault condition, the
unit is equipped with a nonlatched thermal shutdown
circuit. The shutdown circuit engages when Q32
exceeds approximately 120 °C. The unit attempts to
restart when Q32 cools down. The unit cycles on and
off if the fault condition continues to exist. Recovery
from shutdown is accomplished when the cause of the
overheating condition is removed.
Thermal Considerations
The power modules operate in a variety of thermal
environments; however, sufficient cooling should be
provided to help ensure reliable operation of the unit.
Heat is removed by conduction, convection, and radia-
tion to the surrounding environment.
The thermal data presented is based on measure-
ments taken in a wind tunnel. The test setup shown in
Figure 40 was used to collect data for Figures 50 and
51. Note that the airflow is parallel to the long axis of
the module. The derating data applies to airflow along
either direction of the module’s long axis.
The module runs cooler when it is rotated 90° from the
direction shown in Figure 40. This thermally preferred
orientation increases the maximum ambient tempera-
tures 4 °C to 5 °C from the maximum values shown in
Figures 50 and 51.
8-1199(C).a
Note: Dimensions are in millimeters and (inches).
Figure 40. Thermal Test Setup
Proper cooling can be verified by measuring the power
module’s temperature at lead 7 of Q32 as shown in
Figure 41.
8-1149(C).b
Figure 41. Temperature Measurement Location
The temperature at this location should not exceed
115 °C at full power. The output power of the module
should not exceed the rated power.
Convection Requirements for Cooling
To predict the approximate cooling needed for the mod-
ule, determine the power dissipated as heat by the unit
for the particular application. Figures 42 through 49
show typical power dissipation for the module over a
range of output currents.
8-2446(C)
Figure 42. NH033M-L Typical Power Dissipation vs.
Output Current, TA = 25 °C
AIRFLOW
203.2 (8.0)
76.2 (3.0)
AIR VELOCITY
AND AMBIENT
TEMPERATURE
MEASURED HERE
POWER MODULE
25.4 (1.0)
LEAD #7
Q32
12 6789
0.5
3.0
OUTPUT CURRENT, I
O (A)
2.0
1.5
2.5
100
3.5
1.0
4 53
VI = 5.5 V
VI = 5.0 V
VI = 4.5 V
POWER DISSIPATION, PD (W)
Data Sheet NH033x-L and NH050x-L Series Power Modules:
April 2008 5 Vdc Input; 1.2 Vdc to 3.3 Vdc Output; 10 A and 15 A
Lineage Power 15
Thermal Considerations (continued)
Convection Requirements for Cooling
(continued)
8-2450(C)
Figure 43. NH050M-L Typical Power Dissipation vs.
Output Current, TA = 25 °C
8-2447(C)
Figure 44. NH033S1R8-L Typical Power Dissipation
vs. Output Current, TA = 25 °C
8-2451(C)
Figure 45. NH050S1R8-L Typical Power Dissipation
vs. Output Current, TA = 25 °C
8-2445(C)
Figure 46. NH033G-L Typical Power Dissipation vs.
Output Current, TA = 25 °C
2.0
3.0
5.0
4.0
1 3 11 13
0.5
OUTPUT CURRENT, I
O (A)
1.0
0 7 95 152 4 6 8 10 12 14
1.5
2.5
4.5
3.5
6.0
5.5
VI = 5.5 V
VI = 5.0 V
VI = 4.5 V
POWER DISSIPATION, PD (W)
12 6789
0.5
3.0
OUTPUT CURRENT, I
O (A)
2.0
1.5
2.5
100
3.5
1.0
4 53
VI = 5.5 V
VI = 5.0 V
VI = 4.5 V
POWER DISSIPATION, PD
(W)
2.0
3.0
5.0
4.0
1 3 11 13
0.5
OUTPUT CURRENT, I
O
(A)
1.0
0 7 95 152 4 6 8 10 12 14
1.5
2.5
4.5
3.5
6.0
5.5
V
I
= 5.5 V
V
I
= 5.0 V
V
I
= 4.5 V
POWER DISSIPATION, P
D
(W)
12 6789
0.5
3.0
OUTPUT CURRENT, I
O (A)
2.0
1.5
2.5
100
3.5
1.0
4 53
VI = 5.5 V
VI = 5.0 V
VI = 4.5 V
POWER DISSIPATION, PD
(W)
NH033x-L and NH050x-L Series Power Modules: Data Sheet
5 Vdc Input; 1.2 Vdc to 3.3 Vdc Output; 10 A and 15 A April 2008
1616 Lineage Power
Thermal Considerations (continued)
Convection Requirements for Cooling
(continued)
8-2449(C)
Figure 47. NH050G-L Typical Power Dissipation vs.
Output Current, TA = 25 °C
8-2444(C)
Figure 48. NH033F-L Typical Power Dissipation vs.
Output Current, TA = 25 °C
8-2448(C)
Figure 49. NH050F-L Typical Power Dissipation vs.
Output Current, TA = 25 °C
With the known power dissipation and a given local
ambient temperature, the minimum airflow can be cho-
sen from the derating curves in Figures 50 and 51.
8-1425(C).c
Figure 50. NH033x-L Power Derating vs. Local
Ambient Temperature and Air Velocity
2.0
3.0
5.0
4.0
1 3 11 13
0.5
OUTPUT CURRENT, I
O
(A)
1.0
0 7 95 152 4 6 8 10 12 14
1.5
2.5
4.5
3.5
6.0
5.5
V
I
= 5.5 V
V
I
= 5.0 V
V
I
= 4.5 V
POWER DISSIPATION, P
D
(W)
12 6789
0.5
3.0
OUTPUT CURRENT, I
O (A)
2.0
1.5
2.5
100
3.5
1.0
4 53
VI = 5.5 V
VI = 5.0 V
VI = 4.5 V
POWER DISSIPATION, PD (W)
2.0
3.0
5.0
4.0
1 3 11 13
0.5
OUTPUT CURRENT, I
O
(A)
1.0
0 7 95 152 4 6 8 10 12 14
1.5
2.5
4.5
3.5
6.0
5.5
V
I
= 5.5 V
V
I
= 4.5 V
V
I
= 5.0 V
POWER DISSIPATION, P
D
(W)
0 25 45 55 125
0
2
AMBIENT TEMPERATURE, T A (˚C)
POWER DISSIPATION, PD (W)
35 65
3
4
75 85 95 105 115
11.5 m/s (300 ft./min.)
1.0 m/s (200 ft./min.)
0.5 m/s (100 ft./min.)
NATURAL
CONVECTION
2.0 m/s (400 ft./min.)
3.0 m/s (600 ft./min.)
TYPICAL 5.5 VI,
10 A
OUT DISSIPATION
TYPICAL 5.0 VI,
10 A
OUT DISSIPATION
Data Sheet NH033x-L and NH050x-L Series Power Modules:
April 2008 5 Vdc Input; 1.2 Vdc to 3.3 Vdc Output; 10 A and 15 A
Lineage Power 17
Thermal Considerations (continued)
Convection Requirements for Cooling
(continued)
8-1426(C).b
Figure 51. NH050x-L Power Derating vs. Local
Ambient Temperature and Air Velocity
For example, if the NH050F-L dissipates 4 W of heat,
the minimum airflow in a 65 °C environment is 1 m/s
(200 ft./min.).
Keep in mind that these derating curves are approxi-
mations of the ambient temperatures and airflows
required to keep the power module temperature below
its maximum rating. Once the module is assembled in
the actual system, the module’s temperature should be
checked as shown in Figure 41 to ensure it does not
exceed 115 °C.
POWER DISSIPATION, PD (W)
5 15 35 45 115
0
1
5
AMBIENT TEMPERATURE, T A (˚C)
25 55
2
3
4
65 75 85 95 105
6
1.5 m/s (300 ft./min.)
1.0 m/s (200 ft./min.)
0.5 m/s (100 ft./min.)
NATURAL
CONVECTION
2.0 m/s (400 ft./min.)
3.0 m/s (600 ft./min.)
TYPICAL 5.5 VI,
15 AOUT DISSIPATION
TYPICAL 5.0 VI,
15 AOUT
DISSIPATION
NH033x-L and NH050x-L Series Power Modules: Data Sheet
5 Vdc Input; 1.2 Vdc to 3.3 Vdc Output; 10 A and 15 A April 2008
18 Lineage Power
Outline Diagram
Dimensions are in millimeters and (inches).
Tolerances: x.x mm ± 0.5 mm (x.xx in. ± 0.02 in.), x.xx mm ± 0.25 mm (x.xxx in. ± 0.010 in.).
8-1176(C).b
* Label includes product designation and date code.
5.84
(0.230)
25.4
(1.00)
8.6
(0.34)
MAX
SQUARE PIN
0.64 x 0.64
(0.025 x 0.025)
45.7 (1.80)
48.3 (1.90)
43.2 (1.70)
40.6 (1.60)
2.54 (0.100)
1.8
(0.07)
7.62
(0.300)
5.08
(0.200)
20.3
(0.8
0
2.54
(0.100)
17.3
(0.68)
17.8
(0.70)
69.9 (2.75)
25.4
(1.00)
LABEL*
Bottom View
Side View
Top View
Data Sheet NH033x-L and NH050x-L Series Power Modules:
April 2008 5 Vdc Input; 1.2 Vdc to 3.3 Vdc Output; 10 A and 15 A
Lineage Power 19
Recommended Hole Pattern
Dimensions are in millimeters and (inches).
Tolerances: x.xx mm ± 0.13 mm (x.xxx in. ± 0.005 in.).
8-1176(C).b
PinFunctionPinFunction
J1 - 1 Remote On/Off J2 - 1 SENSE (–)
J1 - 2 No Connection J2 - 2 SENSE (+)
J1 - 3 TRIM J2 - 3 VO
J1 - 4 GND J2 - 4 VO
J1 - 5 GND J2 - 5 VO
J1 - 6 VIJ2 - 6 VO
J1 - 7 VIJ2 - 7 GND
J1 - 8 VIJ2 - 8 GND
45.72 (1.800)
70.4 (2.77) MAX
14
58 54
81
48.26 (1.900)
43.18 (1.700)
40.64 (1.600)
2.54 (0.100)
17.53
(0.690)
7.62
(0.300)
5.08
(0.200)
20.3
2
(0.80
0
17.78
(0.700)
2.54
(0.100)
2.03
(0.080)
25.9
(1.02)
MAX
J2
J1
PLATED HOLE SIZE
1.32 (0.052)
NH033x-L and NH050x-L Series Power Modules: Data Sheet
5 Vdc Input; 1.2 Vdc to 3.3 Vdc Output; 10 A and 15 A April 2008
April 2008
FDS01-070EPS (Replaces FDS01-069EPS)
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Lineage Power Corporation
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(Outside U.S.A.: +1-972-284-2626 )
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Lineage Power reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or
application. No rights under any patent accompany the sale of any such product(s) or information.
© 2008 Lineage Power Corporation, (Mesquite, Texas) All International Rights Reserved.
Ordering Information
Please contact your Lineage Power Account Manager or Field Application Engineer for pricing and availability.
Table 3. Device Codes
Table 4. Device Options
Input Voltage Output Voltage Output Power Device Code Comcode
5 V 1.5 V 15 W NH033M-L 107993685
5 V 1.8 V 18 W NH033S1R8-L 107940306
5 V 2.5 V 25 W NH033G-L 107917122
5 V 3.3 V 33 W NH033F-L 107859928
5 V 1.5 V 22.5 W NH050M-L 107993693
5 V 1.8 V 27 W NH050S1R8-L 107940314
5 V 2.5 V 37.5 W NH050G-L 107917130
5 V 3.3 V 50 W NH050F-L 107917148
Option Suffix
Tight tolerance output 2
Short pins: 2.79 mm ± 0.25 mm
(0.110 in. ± 0.010 in.)
8