MEANWELL NFM

NFM-20
20W Output Switching Power Supply
series
Features :
Universal AC input / Full range
Protections: Short circuit / Overload / Over voltage / Over temperature
Ultra-miniature size, light weight
Cooling by free air convection
ANSI/AAMI ES60601-1/IEC60601-1/EN60601-1 medical safety approved
No load power consumption<0.75W
100% full load burn-in test
Optional on-board type version available
Fixed switching frequency at 90KHz
High reliability
3 years warranty
SPECIFICATION
MODEL
DC VOLTAGE
NFM-20-3.3
NFM-20-5
NFM-20-12
NFM-20-15
NFM-20-24
3.3V
5V
12V
15V
24V
RATED CURRENT
4.5A
4.4A
1.8A
1.4A
0.92A
CURRENT RANGE
0 ~ 4.5A
0 ~ 4.4A
0 ~ 1.8A
0 ~ 1.4A
0 ~ 0.92A
RATED POWER
14.85W
22W
21.6W
21W
22.08W
80mVp-p
150mVp-p
150mVp-p
240mVp-p
4.5 ~ 5.4V
10.8 ~ 13.2V
13.5 ~ 16.5V
21.6 ~ 26.4V
RIPPLE & NOISE (max.) Note.2 80mVp-p
OUTPUT
INPUT
VOLTAGE ADJ. RANGE
VOLTAGE TOLERANCE Note.3
2.0%
2.0%
1.0%
1.0%
1.0%
LINE REGULATION
1.0%
1.0%
0.5%
0.5%
0.5%
LOAD REGULATION
1.5%
1.5%
0.5%
0.5%
0.5%
SETUP, RISE TIME
500ms, 20ms/230VAC
HOLD UP TIME (Typ.)
50ms/230VAC
VOLTAGE RANGE
85 ~ 264VAC
FREQUENCY RANGE
47 ~ 440Hz
EFFICIENCY (Typ.)
71%
AC CURRENT (Typ.)
INRUSH CURRENT (Typ.)
0.6A/115VAC
81%
83%
Above 105% rated output power
Protection type : Hiccup mode, recovers automatically after fault condition is removed
WORKING HUMIDITY
ENVIRONMENT STORAGE TEMP., HUMIDITY
TEMP. COEFFICIENT
VIBRATION
SAFETY STANDARDS
SAFETY & WITHSTAND VOLTAGE
84%
65A/230VAC
13.8 ~ 16.2V
3.8 ~ 4.46V
5.75 ~ 6.75V
Protection type : Shut off o/p voltage, clamping by zener diode
Tj 160 typically (U1) detect on main control IC
17.25 ~ 20.25V
27.6 ~ 32.4V
Protection type : Shut down o/p voltage, recovers automatically after temperature goes down
-20 ~ +60 (Refer to "Derating Curve")
20 ~ 90% RH non-condensing
-40 ~ +85
, 10 ~ 95% RH
0.03%/ (0 ~ 50 )
10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes
ANSI/AAMI ES60601-1,TUV EN60601-1, IEC60601-1 approved
I/P-O/P:4KVAC I/P-FG:1.5KVAC O/P-FG:1.5KVAC
ISOLATION RESISTANCE
EMC EMISSION
I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25 / 70% RH
Compliance to EN55011(CISPR11),EN55022 (CISPR22) Class B, EN61000-3-2,-3
EMC IMMUNITY
MTBF
Compliance to EN61000-4-2,3,4,5,6,8,11, EN55024, EN60601-1-2, EN61204-3, medical level, criteria A
DIMENSION
89*51*19.3mm (L*W*H)
0.09Kg; 105pcs/10.5Kg/0.97CUFT
PACKING
NOTE
75%
0.4A/230VAC
OVERLOAD
WORKING TEMP.
OTHERS
16ms/115VAC at full load
120 ~ 370VDC
COLD START 30A/115VAC
<200uA / 240VAC
OVER TEMPERATURE Note.5
(Note 4)
500ms, 20ms/115VAC at full load
LEAKAGE CURRENT
PROTECTION OVER VOLTAGE
EMC
3.1 ~ 3.6V
487.8Khrs min.
MIL-HDBK-217F (25
)
1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25 of ambient temperature.
2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor.
3. Tolerance : includes set up tolerance, line regulation and load regulation.
4. The power supply is considered a component which will be installed into a final equipment. The final equipment must be re-confirmed that it still meets
EMC directives.
5. The over temperature protection (OTP) is the built-in function of the control IC (U1). The activating level described above is based on the specification
provided by the IC manufacturer.
File Name:NFM-20-SPEC 2012-02-20
NFM-20
20W Output Switching Power Supply
Mechanical Specification
series
0.15"(3.8mm)
Unit:inch(mm)
3.5"(88.9mm)
0.15"
(3.8mm)
3.2"(81.3mm)
4-0.12"(3.0mm) Dia
Mounting Holes
T2A/250V
1.7"(43.2mm)
CN1
2"(50.8mm)
CN2
1
2
3
3
2
1
4
T2A/250V
FG
FG
0.76"(19.3mm)
To Chassis Grounding
AC Input Connector (CN1) : Molex 41791-03 or equivalent
Pin No.
1
2
3
Assignment
AC/N
No Pin
AC/L
Mating Housing
Terminal
Molex 2139
or equivalent
Molex 2478
or equivalent
DC Output Connector (CN2) : Molex 41791-04 or equivalent
Pin No.
1,2
3,4
Assignment
+V
-V
Mating Housing
Terminal
Molex 2139
or equivalent
Molex 2478
or equivalent
Block Diagram
fosc : 90KHz
RECTIFIERS
&
FILTER
EMI
FILTER
I/P
RECTIFIERS
&
FILTER
POWER
SWITCHING
PWM
CONTROL
DETECTION
CIRCUIT
FG
Derating Curve
+V
-V
Output Derating VS Input Voltage
100
100
90
80
80
70
LOAD (%)
LOAD (%)
60
40
20
-20
0
10
20
30
40
50
AMBIENT TEMPERATURE ( )
60
70
(HORIZONTAL)
60
50
40
85
95
100
115
120
140
160
180
200
220
240
264
INPUT VOLTAGE (VAC) 60Hz
File Name:NFM-20-SPEC 2012-02-20