Data Sheet
April 2000
NH020-Series Power SIPs:
5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W
The NH020-Series Power SIPs use advanced, surface-mount
technology and deliver high-quality, compact, dc-dc conver-
sion at an economical price.
Applications
■
Distributed power architectures
■
Communication equipment
■
Computer equipment
Features
■
Small size: 63.5 mm x 5.6 mm x 14.0 mm
(2.50 in. x 0.22 in. x 0.55 in.)
■
Nonisolated output
■
Constant frequency
■
High efficiency: 86% typical
■
Overcurrent protection
■
Remote on/off
■
Output voltage adjustment
■
Overtemperature protection
■
UL
*
1950 Recognized,
CSA
†
C22.2 No. 950-95
Certified, approved to EN60950/IEC950
■
Meets FCC Class A radiated limits
Options
■
Tight tolerance output
■
–40 °C operation
Description
The NH020-Series Power SIPs are nonisolated dc-dc converters that operate over an input voltage range of
4.5 Vdc to 5.5 Vdc and provide a precisely regulated dc output. The SIPs have a maximum output current
rating of 6 A at a typical full-load efficiency of 86%. Standard f eatures include remote on/off and output voltage
adjustment.
*
UL
is a registered trademark of Underwriters Laboratories, Inc.
†
CSA
is a registered trademark of Canadian Standards Association.
NH020-Series Power SIPs: Data Sheet
5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W April 2000
2 Tyco Electronics Corp.
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—1.5 ms
–1
(300 lfm) minimum. Higher ambient temperatures are possible with increased airflow and/or decreased power
output. See the Thermal Considerations section for more details.
† The –40 °C operation is optional. See Ordering Information section.
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 SIP is not internally fused. An input line fuse must always be used.
This power SIP 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 10 A (see Safety Considerations section). To aid in
the proper fuse selection for the given application, information on inrush energy and maximum dc input current is
provided. Refer to the fuse manufacturer’s data for further information.
Parameter Symbol Min Max Unit
Input Voltage (continuous) V
I
— 7.0 Vdc
Operating Ambient Temperature* T
Q31
–40/0
†
115 °C
Storage Temperature T
stg
–40 115 °C
On/Off Terminal V oltage V
on/off
— 6.0 Vdc
Parameter Symbol Min Typ Max Unit
Operating Input Voltage V
I
4.5 5.0 5.5 Vdc
Maximum Input Current
(V
I
= 0 V to 5.5 V; I
O
= I
O, max
)I
I, max
— — 6.1 A
Inrush Transient i
2
t——1A
2
s
Input Reflected-ripple Current, Peak-to-peak
(5 Hz to 20 MHz, 500 nH source impedance;
see Figure 14.)
— — 625 — mAp-p
Input Ripple Rejection (120 Hz) — — 60 — dB
Data Sheet NH020-Series Power SIPs:
April 2000 5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W
Tyco Electronics Corp. 3
Electrical Specifications
(continued)
Table 2. Output Specifications
Parameter Device or
Device Suffix Symbol Min Typ Max Unit
Output Voltage Set Point
(V
I
= 5.0 V; I
O
= I
O, max
; T
A
= 25 °C) NH020M
NH020M2
NH020Y
NH020Y2
NH020G
NH020F
NH020F2
V
O, set
V
O, set
V
O, set
V
O, set
V
O, set
V
O, set
V
O, set
1.46
1.485
1.75
1.782
2.43
3.18
3.27
1.5
1.5
1.8
1.8
2.5
3.3
3.3
1.54
1.515
1.85
1.818
2.57
3.39
3.33
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Output Voltage
(Over all oper ating input v oltage , resistiv e load,
and temperature conditions until end of life.)
NH020M
NH020M2
NH020Y
NH020Y2
NH020G
NH020F
NH020F2
V
O
V
O
V
O
V
O
V
O
V
O
V
O
1.43
1.455
1.716
1.745
2.39
3.16
3.24
—
—
—
—
—
—
—
1.57
1.545
1.883
1.855
2.61
3.44
3.36
Vdc
Vdc
Vdc
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 55 °C)
All
M
Y
F, G
All
—
—
—
—
—
—
—
—
—
—
0.1
0.4
0.3
0.1
—
0.4
0.6
0.5
0.3
17
%V
O
%V
O
%V
O
%V
O
mV
Output Ripple and Noise Voltage
(See Figures 7—9 and 15.):
RMS
Peak-to-peak (5 Hz to 20 MHz)
F, G, M
Y
All
—
—
—
—
—
—
—
—
—
25
30
100
mVrms
mVrms
mVp-p
External Load Capacitance (electrolytic) All — 0 — 10,000 µF
Output Current
(Forced convection, 1.5 ms
–1
(300 lfm)) All I
O
0—6 A
Output Current-limit Inception
(V
O
= 90% of V
O, set
; see Feature Descriptions
section.)
All I
O
— 350 — %I
O, max
Efficiency
(V
I
= 5.0 V; I
O
= I
O, max
; T
A
= 25 °C; see Figures
3—6 and 16.)
NH020M
NH020Y
NH020G
NH020F
η
η
η
η
70
73
79
84
72
75
82
86
—
—
—
—
%
%
%
%
Switching Frequency All — — 500 — kHz
Dynamic Response
(
∆
I
O
/
∆
t = 1 A/10 µs, V
I
= 5.0 V, T
A
= 25 °C;
see Figures 10 and 11.):
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
—
—
—
—
—
—
—
—
80
200
80
200
—
—
—
—
mV
µs
mV
µs
NH020-Series Power SIPs: Data Sheet
5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W April 2000
4 Tyco Electronics Corp.
General Specifications
Solder Ball and Cleanliness Requirements
The open frame (no case or potting) pow er SIP will meet the solder ball requirements per J-STD-001B. These
requirements state that solder balls must neither be loose nor violate the pow er SIP minim um electrical spacing.
The cleanliness designator of the open frame power SIP 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.
Parameter Min Typ Max Unit
Calculated MTBF (I
O
= 80% of I
O, max
; T
A
= 25 °C) 1,400,000 hours
Weight — — 7 (0.25) g (oz.)
Parameter Device Symbol Min Typ Max Unit
Remote On/Off Signal Interface
(V
I
= 4.5 V to 5.5 V; open collector pnp transistor
or equivalent compatible; signal referenced to
GND terminal; see Figure 20 and Feature
Descriptions section.):
Logic Low (ON/OFF pin open)—SIP On:
I
on/off
= 0.0 µA
V
on/off
= 0.3 V
Logic High (V
on/off
> 2.8 V)—SIP Off:
I
on/off
= 10 mA
V
on/off
= 5.5 V
Turn-on Time
(I
O
= 80% of I
O, max
; V
O
within ±1% of steady
state; see Figures 12 and 13.)
All
All
All
All
All
V
on/off
I
on/off
V
on/off
I
on/off
—
–0.7
—
—
—
—
—
—
—
—
1.5
0.3
50
6.0
10
5.0
V
µA
V
mA
ms
Output Voltage Set-point Adjustment Range NH020M
NH020Y
NH020G
NH020F
V
trim
V
trim
V
trim
V
trim
100
100
90
84
—
—
—
—
150
120
110
110
%V
O, nom
%V
O, nom
%V
O, nom
%V
O, nom
Overtemperature Protection (shutdown) All T
Q31
— 125 — °C
Data Sheet NH020-Series Power SIPs:
April 2000 5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W
Tyco Electronics Corp. 5
Characteristic Curves
8-1209(C)
Figure 1. Typical Input Characteristic at Room
Temperature and 6 A Output
8-2586(C)
Figure 2. Typical Output Characteristics and
T
A
= 25 °C
8-1541(C)
Figure 3. NH020M Typical Efficiency at Room
Temperature
8-2587(C)
Figure 4. NH020Y Typical Efficiency at Room
Temperature
01 34 6
0
2
8
INPUT VOLTAGE, V
I
(V)
25
3
4
5
6
7
1
I
I
,
max
= 6.1 A
INPUT CURRENT, I
I
(A)
0
50%
510152025
0%
75%
0
100%
25%
OUTPUT CURRENT, I
O
(
A
)
NORMALIZED OUTPUT VOLTAGE, V
O
(V)
V
I
= 5.5 V
V
I
= 5.0 V
V
I
= 4.5 V
0
73
80
OUTPUT CURRENT, IO
(
A
)
456
78
77
76
EFFI
C
IEN
C
Y, (%)
32
79
1
74
75 VI = 4.5 V
VI = 5.0 V
VI = 5.5 V
70
123456
60
75
80
0
8
5
65
OUTPUT CURRENT, I
O
(
A
)
EFFICIENCY, (%)
V
I
= 4.5 V
V
I
= 5.0 V
V
I
= 5.5 V
NH020-Series Power SIPs: Data Sheet
5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W April 2000
66 Tyco Electronics Corp.
Characteristic Curves
(continued)
8-1544(C)
Figure 5. NH020G Typical Efficiency at Room
Temperature
8-1545(C)
Figure 6. NH020F Typical Efficiency at Room
Temperature
8-2588(C)
Figure 7. NH020M Typical Output Ripple Voltage at
Room Temperature and 6 A Output
8-2589(C)
Figure 8. NH020Y Typical Output Ripple Voltage at
Room Temperature and 6 A Output
82.0
87.0
86.0
85.5
85.0
86.5
82.5
84.0 V
I
= 4.5 V
V
I
= 5.0 V
V
I
= 5.5 V
83.5
83.0
84.5
0
OUTPUT CURRENT, I
O
(
A
)
456
EFFICIENCY, (%)
321
0
83
90
OUTPUT CURRENT, I
O
(
A
)
456
88
87
86
EFFICIENCY, (%)
32
89
1
84
85 V
I
= 4.5 V
V
I
= 5.0 V
V
I
= 5.5 V
TIME, t (1 µs/div)
VI = 5 V
OUTPUT VOLTAGE, VO (V)
(20 mV/div)
TIME, t (1 µs/div)
OUTPUT VOLTAGE, VO (V)
(50 mV/div)
VI = 5 V
Data Sheet NH020-Series Power SIPs:
April 2000 5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W
Tyco Electronics Corp. 7
Characteristic Curves
(continued)
8-2590(C)
Figure 9. NH020F, G Typical Output Ripple Voltage
at Room Temperature and 6 A Output
8-1205(C).a
Figure 10. T ypical T ransient Response to Step Load
Change from 0% to 100% of I
O, max
at
Room Temperature and 5 V Input
(W avef orm A veraged to Eliminate Ripple
Component.)
8-1206(C).a
Figure 11. T ypical Transient Response to Step Load
Change from 100% to 0% of I
O, max
at
Room Temperature and 5 V Input
(W avef orm A veraged to Eliminate Ripple
Component.)
8-1207(C)
Figure 12. Typical Start-Up Transient at Room
Temperature, 5 V Input and 6 A Output
TIME, t (1 µs/div)
OUTPUT VOLTAGE, VO (V)
(20 mV/div)
VI = 5 V
TIME, t (100 µs/div)
OUTPUT CURRENT, I
O
(A)
(5 A/div) OUTPUT VOLTAGE, V
O
(V)
(50 mV/div)
TIME, t (100 µs/div)
OUTPUT VOLTAGE, V
O
(V)
(50 mV/div)
OUTPUT CURRENT, I
O
(A)
(5 A/div)
TIME, t (200 µs/div)
OUTPUT VOLTAGE, VO (V)
(1 V/div)
NH020-Series Power SIPs: Data Sheet
5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W April 2000
88 Tyco Electronics Corp.
Characteristic Curves
(continued)
8-1208(C)
Figure 13. Typical Start-Up Transient with Remote
On/Off, at Room Temperature, 5 V Input,
and 6 A Output
Test Configurations
8-203(C).j
Note: Input reflected-ripple current is measured with a simulated
source inductance of 500 nH. Capacitor C
S
offsets possible
battery impedance. Current is measured at the input of the
SIP.
Figure 14. Input Reflected-Ripple Test Setup
8-513(C).o
Note: Use a 47 µF tantalum capacitor. Scope measurement should
be made using a BNC socket. Position the load between
51 mm and 76 mm (2 in. and 3 in.) from the SIP.
Figure 15. Peak-to-Peak Output Noise
Measurement Test Setup
8-1173(C)
Note: All measurements are taken at the SIP terminals. When sock-
eting, place K elvin connections at SIP terminals to avoid mea-
surement errors due to socket contact resistance.
Figure 16. Output Voltage and Efficiency
Measurement Test Setup
TIME, t (50 µs/div)
OUTPUT VOLTAGE, V
O
(V)
(1 V/div) REM
O
TE
O
N
/O
FF,
Von/off (V) (5 V/div)
TO OSCILLOSCOPE
500 nH
C
S
220 µF
ESR < 0.1 Ω
@ 20 °C, 100 kHz
V
I
(+)
V
I
(–)
BATTERY
L
VO
GND
RESISTIVE
LOAD
SCOPE
47 µF
TANTALUM
COPPER STRIP
V
I
V
O
I
I
I
O
SUPPLY
CONTACT RESISTANCE
CO
NTA
C
T AND
DISTRIBUTION LOSSES
LOAD
GND
ηVO IO×
VI II×
-----------------------
100×=%
Data Sheet NH020-Series Power SIPs:
April 2000 5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W
Tyco Electronics Corp. 9
Design Considerations
Input Source Impedance
The power SIP should be connected to a low ac-
impedance input source. Highly inductive source
impedances can affect the stability of the SIP. Adding
external capacitance close to the input pins of the SIP
can reduce the ac impedance and ensure system sta-
bility. The minimum recommended input capacitance
(C1) is a 100 µF electrolytic capacitor (see Figures 17
and 19).
8-1215(C)
Figure 17. 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 SIP, provided the source inductance
(LSOURCE) is less than 1 µH (see Figure 17).
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
18).
As mentioned above, a 100 µF electrolytic capacitor
(C1) should be added across the input of the SIP 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.
Refer to Figure 19 for the appropriate electrolytic
capacitor ratings.
When using a tantalum input capacitor , tak e care not to
exceed device power rating because of the capacitor’s
failure mechanism (for example, a shor t circuit). The
filter inductor should be rated to handle the maximum
power SIP input current of 6.1 Adc.
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 SIP.
8-1216(C)
Figure 18. Setup with External Input Filter to
Reduce Input Reflected-Ripple Current
and Ensure Stability
8-1217(C)
Figure 19. Electrolytic Capacitor ESR and RMS
Current Rating Data
TO OSCILLOSCOPE
1 µH (MAX)
C2
VI
GND
SUPPLY
CURRENT
PROBE
LSOURCE
10 µF (MAX)
C1
100 µF (TYP)
+
TO OSCILLOSCOPE
C
1
V
I
GND
SUPPLY
CURRENT
PROBE
L
SOURCE
100 µF
(TYP)
L
FILTER
+
C
2
50 100 200 300 500
0.1
1.0
10
.
0
C
1
ESR
(
mΩ
)
400
C2 = 0 µF
C2 = 2 µF
C2 = 6 µF
C2 = 10 µF
C2 = 4 µF
C2 = 8 µF
600 700 800 1000900
C
1
RMS CURRENT RATING (A)
NH020-Series Power SIPs: Data Sheet
5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W April 2000
1010 Tyco Electronics Corp.
Safety Considerations
For safety-agency approval of the system in which the
power SIP is used, the power SIP must be installed in
compliance with the spacing and separation require-
ments of the end-use safety agency standard, i.e.,
UL
1950,
CSA
C22.2 No. 950-95, and the 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 SIP has extra-low voltage (ELV) outputs
when all inputs are ELV.
The input to these units is to be provided with a maxi-
mum 10 A normal-blow fuse in the ungrounded lead.
If an input electrolytic capacitor is to be used, it should
be selected using the design information found in the
Design Considerations section.
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.
Power SIP will supply up to 350% of rated current for
less than 1.25 seconds bef ore unit enters thermal shut-
down.
Remote On/Off
To turn the power SIP on and off, the user must supply
a switch to control the voltage at the on/off terminal
(Von/off). The switch can be an open collector pnp tran-
sistor connected between the on/off terminal and the VI
terminal or its equivalent (see Figure 20).
During a logic low when the ON/OFF pin is open, the
power SIP is on and the maximum Von/off generated
by the power SIP 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 SIP is off and the maximum Ion/off is 10 mA. The
switch should maintain a logic high while sourcing
10 mA.
If not using the remote on/off feature, leave the
ON/OFF pin open.
The SIP has internal capacitance to reduce noise at
the ON/OFF pin. Additional capacitance is not gener-
ally needed and may degrade the start-up characteris-
tics of the SIP.
CAUTION: Never ground the on/off terminal.
Grounding the on/off terminal disables
an important safety feature and may
damage the SIP or the customer
system.
8-1175(C)
Figure 20. Remote On/Off Implementation
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 VO pin (decrease output voltage) or GND pin
(increase output voltage). The trim range for the
NH020F is +10%, –16%. The trim range for the
NH020G is ±10% of VO, nom. The trim range for SIPs
that produce less than 2.5 VO is +20%, –0%.
Connecting an e xternal resistor (Rtrim-down) between the
TRIM and V O pin decreases the output voltage set point
as defined in the following equation.
For the F (3.3 VO) SIP:
For the G (2.5 VO) SIP:
Note: Output voltages below 2.5 V cannot be trimmed
down.
The test results for these configurations are displayed
in Figures 21 and 22.
Vo
Vswitch Ion/off ON/OFF
VI
GND
Von/off
+
+
Rtrim-down 18.23
VOVO adj,–
------------------------------15–
kΩ=
Rtrim-down 6.975
2.498 VO adj,–
------------------------------------- 15–
kΩ=
Data Sheet NH020-Series Power SIPs:
April 2000 5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W
Tyco Electronics Corp. 11
Feature Descriptions (continued)
Output Voltage Set-Point Adjustment
(Trim) (continued)
8-1549(C)
Figure 21. NH020G Rtrim-down T est Results
8-1548(C)
Figure 22. NH020F Rtrim-down T est Results
Connecting an external resistor (Rtrim-up) between the
TRIM and GND pins increases the output voltage set
point to VO, adj as defined in the following equation:
The test results for this configuration are displayed in
Figures 23—26.
Leave the TRIM pin open if not using that feature.
8-1551(C).a
Figure 23. NH020M Rtrim-up T est Results
8-2591(C)
Figure 24. NH020Y Rtrim-up T est Results
ADJUSTED OUTPUT VOLTAGE, V
O, adj
(V)
TRIM RESISTOR VALUE, R
trim-down
( )
2.25
10k
1M
2.45
100k
2.402.352.30 2.50
ADJUSTED OUTPUT VOLTAGE, V
O, adj
(V)
TRIM RESISTOR VALUE, R
trim-down
( )
2.8
10k
1M
3.2
100k
3.13.02.9 3.3
Rtrim-up 28
VO adj,VO–
------------------------------1–
kΩ=
10k
ADJUSTED OUTPUT VOLTAGE, V
O, adj
(V)
100k
1M
10M
1.55
1.60
1.65
1.70
1.75
1.50
1.85
1.95
2.00
1.80
2.10
1.90
2.05
2.15
2.20
2.25
2.30
TRIM RESISTOR VALUE, R
trim-up
( )
10k
ADJUSTED OUTPUT VOLTAGE, V
O, adj
(V)
100k
1M
10M
1.86
1.89
1.93
1.96
1.80
2.02
2.08
2.11
1.99
2.17
2.05
2.14
2.21
2.24
2.27
2.30
1.83
TRIM RESISTOR VALUE, R
trim-up
( )
NH020-Series Power SIPs: Data Sheet
5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W April 2000
1212 Tyco Electronics Corp.
Feature Descriptions (continued)
Output Voltage Set-Point Adjustment
(Trim) (continued)
8-1550(C)
Figure 25. NH020G Rtrim-up T est Results
8-1547(C)
Figure 26. NH020F Rtrim-up T est Results
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 lead 7 of
Q31 (shown in Figure 28) exceeds approximately
125 °C. The unit attempts to restart when Q31 cools
down and cycles on and off while the fault condition
e xists. Recov ery from shutdown is accomplished when
the cause of the overtemperature condition is remo ved.
Thermal Considerations
The power SIP oper ates in a v ariety of thermal environ-
ments; however, sufficient cooling should be provided
to help ensure reliable operation of the unit. Heat is
removed by conduction, convection, and radiation to
the surrounding environment.
The thermal data presented is based on measure-
ments taken in a wind tunnel. The test setup shown in
Figure 27 was used to collect data for Figure 33. Note
that the airflow is parallel to the long axis of the SIP.
The derating data applies to airflow along either direc-
tion of the SIP’s long axis.
8-1199(C)
Note: Dimensions are in millimeters and (inches).
Figure 27. Thermal Test Setup
Proper cooling can be verified b y measuring the pow er
SIP’s temperature at lead 7 of Q31 as shown in
Figure 28.
8-1149(C).a
Figure 28. Temperature Measurement Location
The temperature at this location should not exceed
115 °C. The output po wer of the SIP should not e xceed
the rated power for the SIP as listed in the Ordering
Information table.
TRIM RESISTOR VALUE, R
trim-up
( )
ADJUSTED OUTPUT VOLTAGE, V
O, adj
(V)
2.50 2.70
1M
2.652.602.55 2.802.75
10k
10M
100k
TRIM RESISTOR VALUE, R
trim-up
( )
ADJUSTED OUTPUT VOLTAGE, V
O, adj
(V)
3.35
10k
1M
3.55 3.60
100k
3.503.453.40 3.65
AIRFLOW
76.2 (3.0)
AIR VELOCITY
AND AMBIENT
TEMPERATURE
MEASURED HERE
POWER SIP
177.8 (7.0)
76.2 (3.0)
LEAD #7
Q31
Data Sheet NH020-Series Power SIPs:
April 2000 5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W
Tyco Electronics Corp. 13
Thermal Considerations (continued)
Convection Requirements for Cooling
To predict the approximate cooling needed for the SIP,
determine the power dissipated as heat by the unit for
the particular application. Figures 29—32 show typical
heat dissipation for the SIP over a range of output cur-
rents.
8-1542(C)
Figure 29. NH020M Power Dissipation vs. Output
Current
8-2592(C)
Figure 30. NH020Y Power Dissipation vs. Output
Current
8-1543(C)
Figure 31. NH020G Power Dissipation vs. Output
Current
8-1546(C)
Figure 32. NH020F Power Dissipation vs. Output
Current
0
0.0
3.5
OUTPUT CURRENT, I
O
(
A
)
456
2.5
2.0
1.5
32
3.0
1
0.5
1.0
POWER DISSIPATION, P
D
(W)
V
I
= 4.5 V
V
I
= 5.0 V
V
I
= 5.5 V
3.5
1.0
0.0
2.0
3.0
4
.
0
0.5
1.5
2.5
123456
POWER DISSIPATION, PD (W)
0
OUTPUT CURRENT, IO
(
A
)
VI = 5.5 V
VI = 5.0 V
VI = 4.5 V
0
0.0
3.5
456
2.5
2.0
1.5
32
3.0
1
0.5
1.0
V
I
= 5.5 V
V
I
= 5.0 V
V
I
= 4.5 V
POWER DISSIPATION, P
D
(W)
OUTPUT CURRENT, I
O
(
A
)
0
0.0
4.0
OUTPUT CURRENT, IO
(
A
)
456
3.0
2.5
2.0
POWER DISSIPATION, PD (W)
32
3.5
1
0.5
1.5
1.0 VI = 4.5 V
VI = 5.0 V
VI = 5.5 V
NH020-Series Power SIPs: Data Sheet
5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W April 2000
1414 Tyco Electronics Corp.
Thermal Considerations (continued)
Convection Requirements for Cooling
(continued)
With the known heat dissipation and a given local
ambient temperature, the minimum airflow can be cho-
sen from the derating curves in Figure 33.
8-1201(C)
Figure 33. Power Derating vs. Local Ambient
Temperature and Air Velocity
For example, if the unit dissipates 2.0 W of heat, the
minimum airflow in an 80 °C environment is 1.0 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 SIP temperature below its
maximum rating. Once the SIP is assembled in the
actual system, the SIP’s temperature should be
checked as shown in Figure 28 to ensure it does not
exceed 115 °C.
Layout Considerations
Copper paths must not be routed between pins 2 and 3
and pins 7 and 8.
0 10 30 40 120
0.0
1.0
5.0
AMBIENT TEMPERATURE, T
A
(°C)
POWER DISSIPATION, P
D
(W)
20 50
1.5
2.0
2.5
3.0
3.5
60 110
0.5
70 80 90 100
2.0 m/s (400 ft/min.)
4.0
4.5
1.5 m/s (300 ft/min.)
1.0 m/s (200 ft/min.)
0.5 m/s (100 ft/min.)
NATURAL
CONVECTION
Data Sheet NH020-Series Power SIPs:
April 2000 5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W
Tyco Electronics Corp. 15
Outline Diagram
Dimensions are in millimeters and (inches).
Tolerances: x.x ± 0.5 mm (0.02 in.), x.xx ± 0.25 mm (0.010 in.).
Front View
Side View
8-1176(C).a
48.26 (1.900)
7.1 (0.28)
2.54 (0.100)
0.64 (0.025) SQUARE PINS
12 34 567 89
63.5 (2.50)
3.0 (0.12)
14.0
(0.55)
dc-dc POWER SIP
NH020M
2.79 (0.110)
6.1
(0.24)
MAX
2.79 (0.110)
Pin Function
1VO
2VO
3VO
4 GND
5 GND
6VI
7VI
8 TRIM
9 ON/OFF
NH020-Series Power SIPs: Data Sheet
5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W April 2000
16 Tyco Electronics Corp.
Recommended Hole Pattern
Component-side footprint.
Dimensions are in millimeters and (inches).
8-1176(C).a
Note: No copper should be placed between pins 2 and 3 and pins 7 and 8.
Ordering Information
Please contact your Tyco Electronics’ Account Manager or Field Application Engineer for pricing and availability.
Table 3. Device Codes
Table 4. Device Options
Input V oltage Output V oltage Output Power Device Code Comcode
5 V 1.5 V 9 W NH020M 107870065
5 V 1.8 V 10.8 W NH020Y TBD
5 V 2.5 V 15 W NH020G 107917114
5 V 3.3 V 20 W NH020F 107221145
Option Suffix
Tight tolerance output
(not available on the NH020G) 2
–40 °C operation 5
63.5 (2.50)
48.3 (1.90)
7.1
(0.28)
KEEP OUT
PIN 1
2.54
(0.100)
1.17 (0.046) PLATED-THROUGH HOLE
1.78 (0.070) PAD SIZE BOTH SIDES
PIN 9 2.79
(0.110)
5.6
(0.22)
Data Sheet NH020-Series Power SIPs:
April 2000 5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W
Tyco Electronics Corp. 17
Notes
NH020-Series Power SIPs: Data Sheet
5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W April 2000
1818 Tyco Electronics Corp.
Notes
Data Sheet NH020-Series Power SIPs:
April 2000 5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W
Tyco Electronics Corp. 19
Notes
NH020-Series Power SIPs: Data Sheet
5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W April 2000
Printed on
Recycled Paper
Tyco Electronics Power Systems, Inc.
3000 Skyline Drive, Mesquite, TX 75149, USA
+1-800-526-7819 FAX: +1-888-315-5182
(Outside U.S.A.: +1-972-284-2626, FAX: +1-972-284-2900
http://power.tycoeleectronics.com
Tyco Electronics Corportation 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.
© 2001 Tyco Electronics Corporation, Harrisburg, PA. All International Rights Reserved.
Printed in U.S.A.
April 2000
DS00-127EPS (Replaces DS98-338EPS)
