Data Sheet
March 1999
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
adv anced, surface-mount technology and deliver high-quality,
compact, dc-dc conversion at an economical price.
Applications
■
Distributed power architectures
■
Servers
■
Workstations
■
Desktop computers
Features
■
Small size: 69.9 mm x 25.4 mm x 8.6 mm
(2.75 in. x 1.00 in. x 0.34 in.)
■
Non-isolated output
■
Constant frequency
■
High efficiency: 91% typical
■
Overcurrent protection
■
Remote on/off
■
Output voltage adjustment:
90% to 110% of V
O, nom
:
V
O
≥
2.5 V
100% to 120% of V
O, nom
:
V
O
< 2.5 V
■
Overtemperature protection
■
Remote sense
■
UL
*
1950 Recognized,
CSA
†
C22.2 No. 950-95
Certified, VDE 0805 (EN60950, IEC950) Licensed
■
Meets FCC Class A radiated limits
Options
■
Tight tolerance output
■
Short 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 March 1999
2 Lucent Technologies Inc.
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 con v ection—200 lfpm minim um. Higher ambient temperatures possible with increased airflo w and/or decreased po wer 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 r ating of 20 A (see Saf ety 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 V
I
— 7.0 Vdc
On/Off Terminal Voltage All V
on/off
— 6.0 Vdc
Operating Ambient Temperature*:
NH033x-L
NH050x-L All
All T
A
T
A
0
062
49
°
C
°
C
Storage Temperature All T
stg
–55 125
°
C
Parameter Symbol Min Typ Max Unit
Operating Input Voltage:
Start-up
Continuous Operation V
I
V
I
4.75
4.5 —
5.0 —
5.5 Vdc
Vdc
Maximum Input Current
(V
I
= 0 V to 5.5 V; I
O
= I
O, max
; see Figures 1—8.):
NH033x-L
NH050x-L I
I, max
I
I, max
—
——
—10
16 A
A
Input Reflected-ripple Current, Peak-to-peak
(5 Hz to 20 MHz, 500 nH source impedance;
see Figure 33.)
I
I
— 300 — mAp-p
Input Ripple Rejection (120 Hz) — — 60 — dB
Data Sheet NH033x-L and NH050x-L Series Power Modules:
March 1999 5 Vdc Input; 1.2 Vdc to 3.3 Vdc Output; 10 A and 15 A
Lucent Technologies Inc. 3
Electrical Specifications
(continued)
Table 2. Output Specifications
Parameter Device Symbol Min Typ Max Unit
Output Voltage Set Point
(V
I
= 5.0 V; I
O
= I
O, max
; T
A
= 25
°
C) NH0xxM-L
NH0xxS1R8-L
NH0xxG-L
NH0xxF-L
V
O, set
V
O, set
V
O, set
V
O, 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
V
O
V
O
V
O
V
O
1.43
1.71
2.40
3.16
—
—
—
—
1.58
1.89
2.60
3.44
Vdc
Vdc
Vdc
Vdc
Output Regulation:
Line (V
I
= 4.5 V to 5.5 V)
Load (I
O
= 0 to I
O, max
)
Temperature (T
A
= 0
°
C to 50
°
C)
All
All
All
—
—
—
—
—
—
0.1
0.1
—
0.3
0.3
17
%V
O
%V
O
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
µ
F
Output Current
(See Derating Curves Figures 50 and
51.)
NH033x-L
NH050x-L I
O
I
O
0
0—
—10.0
15.0 A
A
Output Current-limit Inception
(V
O
= 90% of V
O, set
; T
Q32
= 80
°
C;
see Feature Descriptions section.)
All I
O
103 — 200 %I
O, max
Output Short-circuit Current All I
O
— 170 — %I
O, max
Efficiency
(V
I
= 5.0 V; I
O
= I
O, max
; T
A
= 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
(
∆
I
O
/
∆
t = 1 A/10
µ
s, V
I
= 5.0 V,
T
A
= 25
°
C):
Load Change from I
O
= 0% to 100% of
I
O, max
:
Peak Deviation
Settling Time (V
O
< 10% peak
deviation)
Load Change from I
O
= 100% to 0% of
I
O, max
:
Peak Deviation
Settling Time (V
O
< 10% peak
deviation)
All
All
All
All
—
—
—
—
—
—
—
—
20
200
20
200
—
—
—
—
mV
µ
s
mV
µ
s
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 March 1999
4 Lucent Technologies Inc.
General Specifications
Cleanliness Requirements
The open frame (no case or potting) pow er 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 V
O
≥
2.5 V or 20% for V
O
< 2.5 V.
Parameter Min Typ Max Unit
Calculated MTBF (I
O
= 80% of I
O, max
; T
A
= 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:
F or VO ≥ 2.5 V
F or VO < 2.5 V
Output Voltage Set-point Adjustment Range (Trim):
F or VO ≥ 2.5 V
F or VO < 2.5 V
—
—
VTRIM
VTRIM
—
—
90
100
—
—
—
—
10
20
110
120
% V O, nom
% V O, nom
% V O, nom
% V O, nom
Overtemperature Protection (shutdown)
(See Feature Descriptions section.) TQ32 115 120 — °C
Lucent Technologies Inc. 5
Data Sheet NH033x-L and NH050x-L Series Power Modules:
March 1999 5 Vdc Input; 1.2 Vdc to 3.3 Vdc Output; 10 A and 15 A
Characteristics Curves
8-2415(C)
Figure 1. NH033M-L Input Characteristics,
TA = 25 °C
8-2419(C)
Figure 2. NH050M-L Input Characteristics,
TA = 25 °C
8-2416(C)
Figure 3. NH033S1R8-L Input Characteristics,
TA = 25 °C
8-2420(C)
Figure 4. NH050S1R8-L Input Characteristics,
TA = 25 °C
8-2414(C)
Figure 5. NH033G-L Input Characteristics,
TA = 25 °C
8-2418(C)
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, I
I
(A)
I
O
= 10 A
1.0 2.0 3.0 4.0
3.5 4.5
0
6
INPUT VOLTAGE, V
I
(
V
)
4
3
5
5.0
8
5.50.0
7
2
1
9
10
1.5 2.5
I
O
= 15 A
0.5
INPUT CURRENT, I
I
(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
I
O
= 10 A
5.5
INPUT CURRENT, I
I
(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, I
I
(A)
I
O
= 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, I
I
(A)
3
I
O
= 10 A
0.5
0.5 1.0 3.0 3.5 4.0 4.5
0
10
INPUT VOLTAGE, VI (V)
6
4
8
14
5.00.0
12
2
2.0 2.51.5 5.5
INPUT CURRENT, II (A)
IO = 15 A
6 Lucent Technologies Inc.
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 March 1999
Characteristics Curves (continued)
8-2413(C)
Figure 7. NH033F-L Input Characteristics, TA = 25 °C
8-2417(C)
Figure 8. NH050F-L Input Characteristics, TA = 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
I
O
= 10 A
INPUT VOLTAGE, V
I
(V)
INPUT CURRENT, I
I
(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
I
O
= 15 A
5.5
INPUT CURRENT, I
I
(A)
0.4
OUTPUT VOLTAGE, V
O
(V)
2 4 12 14 16
0.0
OUTPUT CURRENT, I
O
(
A
)
0.6
1.2
0.2
1.6
8106135 7911131517
1.0
1.4
1819
V
I
= 5 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 101214 16 2426
2
OUTPUT VOLTAGE, V
O
(V)
4 20 22
V
I
= 5 V
0
1.4
0.4
OUTPUT VOLTAGE, V
O
(V)
24 12
14 16
0.0
OUTPUT CURRENT, I
O
(
A
)
0.6
1.0
0.2
1.8
081061357911 13 15 17 20
1.4
0.8
1.2
1.6
1819
V
I
= 5 V
OUTPUT VOLTAGE, V
O
(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 101214 16 2426
2 4 20 22
V
I
= 5 V
0
1.4
1.6
Lucent Technologies Inc. 7
Data Sheet NH033x-L and NH050x-L Series Power Modules:
March 1999 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, V
O
(V)
2 4 12 14 16
0.0
OUTPUT CURRENT, I
O
(
A
)
1.5
0.5
2.5
8106135 7911131517
1.0
2.0
18 1
9
V
I
= 5 V
0
0.5
0.0
OUTPUT CURRENT, I
O
(A)
1.5
2.5
1.0
2.0
22 24
2
OUTPUT VOLTAGE, V
O
(V)
64 8 101214 1618 20
V
I
= 5 V
026 28
1.0
OUTPUT VOLTAGE, V
O
(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
181
9
V
I
= 5 V
0
0.5
0.0
OUTPUT CURRENT, IO (A)
1.5
2.5
1.0
3.0
2.0
3.5
22 24
2
OUTPUT VOLTAGE, VO (V)
64 8101214161820
VI = 5 V
0
EFFICIENCY, (%)
85.5
84.5
83.0
12 6789
82.0
OUTPUT CURRENT, I
O
(A)
83.5
84.0
82.5
86.0
1
0
0 4 53
85.0 V
I
= 4.5 V
V
I
= 5.0 V
V
I
= 5.5 V
EFFICIENCY, (%)
82
1 3 11 13
80
OUTPUT CURRENT, I
O
(A)
83
81
86
0 7 95 152 4 6 8 10 12 14
85
84
V
I
= 4.5 V
V
I
= 5.0 V
V
I
= 5.5 V
EFFICIENCY, (%)
8 Lucent Technologies Inc.
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 March 1999
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, (%)
12 6789
84.0
86.5
OUTPUT CURRENT, I
O
(A)
85.5
85.0
86.0
87.5
100
87.0
84.5
4 53
V
I
= 4.5 V
V
I
= 5.0 V
V
I
= 5.5 V
83.5
84.5
86.5
85.5
1 3 11 13
82.0
OUTPUT CURRENT, I
O
(A)
82.5
87.0
0 7 95 1
5
2 4 6 8 10 12 14
V
I
= 4.5 V
V
I
= 5.0 V
V
I
= 5.5 V
83.0
84.0
86.0
85.0
EFFICIENCY, (%)
EFFICIENCY, (%)
12 6789
87.0
89.5
OUTPUT CURRENT, I
O
(A)
88.5
88.0
89.0
90.5
0
90.0
87.5
4 53 10
V
I
= 4.5 V
V
I
= 5.0 V
V
I
= 5.5 V
87
1 3 11 13
85
OUTPUT CURRENT, IO (A)
88
86
91
0 7 95 1
5
2 4 6 8 10 12 14
90
EFFICIENCY, (%)
VI = 4.5 V
89 VI = 5.5 V
VI = 5.0 V
EFFICIENCY, (%)
12 6789
90.0
92.5
OUTPUT CURRENT, I
O
(
A
)
91.5
91.0
92.0
100
93.0
90.5
4 53
V
I
= 4.5 V
V
I
= 5.0 V
V
I
= 5.5 V
EFFICIENCY, (%)
EFFICIENCY, (%)
89.5
90.5
92.5
91.5
1 3 11 13
88.0
OUTPUT CURRENT, I
O
(A)
88.5
93.0
0 7 95 1
5
2 4 6 8 10 12 14
89.0
90.0
92.0
91.0
V
I
= 4.5 V
EFFICIENCY, (%)
V
I
= 5.5 V
V
I
= 5.0 V
Lucent Technologies Inc. 9
Data Sheet NH033x-L and NH050x-L Series Power Modules:
March 1999 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,
V
ON/OFF
(V)
OUTPUT VOLTAGE, V
O
(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 March 1999
1010 Lucent Technologies Inc.
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, V
O
(V)
(1 V/div.) REMOTE ON/OFF,
V
ON/OFF
(V)
TIME, t (500 µs/div)TIME, t (500 µs/div)
REMOTE ON/OFF,
V
ON/OFF
(V)
OUTPUT VOLTAGE, V
O
(V)
(1 V/div.)
TIME, t (500 µs/div)
REMOTE ON/OFF,
V
ON/OFF
(V)
OUTPUT VOLTAGE, V
O
(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)
Data Sheet NH033x-L and NH050x-L Series Power Modules:
March 1999 5 Vdc Input; 1.2 Vdc to 3.3 Vdc Output; 10 A and 15 A
Lucent Technologies Inc. 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 Ω @ 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 P ower Modules. Adding e xternal
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 ≤ 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 f or 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 , tak e care not to
e xceed the tantalum capacitor pow er 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 nH
C
S
220 µF
ESR < 0.1 Ω
@ 20 °C, 100 kHz
V
I
GND
BATTERY
L
TEST
CURRENT
PROBE
C
I
470 µF
ESR < 0.02 Ω
@ 100 kHz
V
O
GND
RESISTIVE
LOAD
SCOPE
0.1 µF
COPPER STRIP
1,000 µF
V
I
V
O
I
I
I
O
SUPPLY
CONTACT RESISTANCE
CONTACT AND
DISTRIBUTION LOSSES
LOAD
GND
SENSE(+)
SENSE(–)
ηVO IO×
VI II×
------------------------x 100=%
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 March 1999
1212 Lucent Technologies Inc.
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 pow er 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). F or comple x or v ery low ESR filters, consult
Lucent Technologies 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
1950,
CSA
C22.2 No. 950-95, and VDE 0805
(EN60950, IEC950).
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 v oltage (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.
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 s witch 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:
March 1999 5 Vdc Input; 1.2 Vdc to 3.3 Vdc Output; 10 A and 15 A
Lucent Technologies Inc. 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 ma y dama ge 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 r ange given in the F eature 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 f or VO < 2.5 V. This limit includes any increase in
voltage due to remote-sense compensation and output
voltage set-point adjustment (trim), see Figure 39.
If not using the remote-sense f eature 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 produce less
than 2.5 VO is +20%, –0%.
Connecting an e xternal 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
V
O
SENSE(+)
SENSE(–)
V
I
I
O
CONTACT AND
DISTRIBUTION LOSSES
I
I
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 March 1999
1414 Lucent Technologies Inc.
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 b y measuring the pow er
module’ s temper ature at lead 7 of Q32 as sho wn in Fig-
ure 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 b y 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
V
I
= 5.5 V
V
I
= 5.0 V
V
I
= 4.5 V
POWER DISSIPATION, P
D
(W)
Data Sheet NH033x-L and NH050x-L Series Power Modules:
March 1999 5 Vdc Input; 1.2 Vdc to 3.3 Vdc Output; 10 A and 15 A
Lucent Technologies Inc. 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 P ower Dissipation
vs. Output Current, TA = 25 °C
8-2451(C)
Figure 45. NH050S1R8-L Typical P ower 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 1
2 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
V
I
= 5.5 V
V
I
= 5.0 V
V
I
= 4.5 V
POWER DISSIPATION, P
D
(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 1
2 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
V
I
= 5.5 V
V
I
= 5.0 V
V
I
= 4.5 V
POWER DISSIPATION, P
D
(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 March 1999
1616 Lucent Technologies Inc.
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, IO (A)
1.0
0 7 95 1
2 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
V
I
= 5.5 V
V
I
= 5.0 V
V
I
= 4.5 V
POWER DISSIPATION, P
D
(W)
2.0
3.0
5.0
4.0
1 3 11 13
0.5
OUTPUT CURRENT, IO (A)
1.0
0 7 95 1
2 4 6 8 10 12 14
1.5
2.5
4.5
3.5
6.0
5.5
VI = 5.5 V
VI = 4.5 V
VI = 5.0 V
POWER DISSIPATION, PD (W)
0 25 45 55 125
0
2
AMBIENT TEMPERATURE, T
A
(°C)
POWER DISSIPATION, P
D
(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 V
I
,
10 A
OUT
DISSIPATION
TYPICAL 5.0 V
I
,
10 A
OUT
DISSIPATION
Data Sheet NH033x-L and NH050x-L Series Power Modules:
March 1999 5 Vdc Input; 1.2 Vdc to 3.3 Vdc Output; 10 A and 15 A
Lucent Technologies Inc. 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 temper ature should be
checked as shown in Figure 41 to ensure it does not
exceed 115 °C.
POWER DISSIPATION, P
D
(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 V
I
,
15 A
OUT
DISSIPATION
TYPICAL 5.0 V
I
,
15 A
OUT
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 March 1999
18 Lucent Technologies Inc.
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.).
T op View
Side View
Bottom View
8-1176(C).b
* Label includes product designation and date code.
69.9 (2.75)
25.4
(1.00)
LUCENT
TECHNOLOGIES
LABEL*
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
(0.80)2.54
(0.100)
1
7.
3
(0.68)
17.8
(0.70)
Data Sheet NH033x-L and NH050x-L Series Power Modules:
March 1999 5 Vdc Input; 1.2 Vdc to 3.3 Vdc Output; 10 A and 15 A
Lucent Technologies Inc. 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
Pin Function Pin Function
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)
20.32
(0.800)
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 March 1999
Copyright © 1999 Lucent Technologies Inc.
All Rights Reserved
Printed in U.S.A.
March 1999
DS97-545EPS (Replaces DS97-028EPS) Printed On
Recycled Paper
For additional information, contact your Lucent Technologies Account Manager or the following:
POWER SYSTEMS UNIT: Network Products Group, Lucent Technologies Inc., 3000 Skyline Drive, Mesquite, TX 75149, USA
+1-800-526-7819 (Outside U.S.A.: +1-972-284-2626, FAX +1-972-284-2900) (product-related questions or technical assistance)
INTERNET: http://www.lucent.com/networks/power
E-MAIL: techsupport@lucent.com
ASIA PACIFIC: Lucent Technologies Singapore Pte. Ltd., 750A Chai Chee Road #05-01, Chai Chee Industrial Park, Singapore 469001
Tel. (65) 240 8041, FAX (65) 240 8053
JAPAN: Lucent Technologies Japan Ltd., Mori Building No. 25, 4-30, Roppongi 1-chome, Minato-ku, Tokyo, 106-8508 Japan
Tel. (81) 3 5561 3000, FAX (81) 3 5561 4387
LATIN AMERICA: Lucent Technologies Inc., Room 9N128, One Alhambra Plaza, Coral Gables, FL 33134, USA
Tel. +1-305-569-4722, FAX +1-305-569-3820
EUROPE: Data Requests: DATALINE: Tel. (44) 1189 324 299, FAX (44) 1189 328 148
Technical Inquiries: GERMANY: (49) 89 95086 0 (Munich), UNITED KINGDOM: (44) 1344 865 900 (Ascot),
FRANCE: (33) 1 40 83 68 00 (Paris), SWEDEN: (46) 8 594 607 00 (Stockholm), FINLAND: (358) 9 4354 2800 (Helsinki),
ITALY: (39) 02 6608131 (Milan), SPAIN: (34) 91 807 1441 (Madrid)
Lucent Technologies Inc. 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.
Ordering Information
For assistance in ordering options, please contact your Lucent Technologies Account Manager or Application
Engineer.
Table 3. Device Codes
Table 4. Device Options
Input V oltage Output V oltage 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