OUTPUT SPECIFICATIONS
Item
Test conditions
Min
0.3
Typ
Max
Units
W
Output power
See below products program
Positive voltage accuracy Refer to recommended circuit
Negative voltage accuracy Refer to recommended circuit
10% to 100% load(WRB_ZP_3W)
Load regulation
10% to 100% load(WRA_ZP_3W)*
Line regulation
Temperature drift
Ripple & Noise**
Switching frequency
Input voltage from low to high
Refer to recommended circuit
20MHz bandwidth
100% load, nominal input voltage
50
300
3
±1
±3
±3
±5
±0.5 ±0.75
±0.5
±0.2
±1
±0.5
±0.03
%/°C
100 mVp-p
KHz
APPLICATION NOTE
Requirement on output load
In order to ensure the product operate efficiently
and reliably, in addition to a max load (namely full
load), a minimum load is specified for this kind of
DC/DC converter. Make sure the specified range
of input voltage is not exceeded, the minimum
output load no less than 10% load. If the actual
load is less than the specified minimum load, the
output ripple may increase sharply while its
efficiency and reliability will reduce greatly. If the
actual output power is very small, please add an
appropriate resistor as extra loading, or contact
our company for other lower output power
products.
Recommended Circuit
All the WRA_ZP-3W & WRB_ZP-3W Series
Min
-40
-55
15
Typ
Max
95
85
125
300
0.2
Free air convection
Continuous, automatic recovery
Copper, Nickel Coated
1000
15
K hours
g
W
GND
Single Output
Vin
Cin
%
*Dual output models unbalanced load:
±5%.
**
Test ripple and noise by
“parallel
cable” method. See detailed operation instructions at Testing of
Power Converter section, application notes.
COMMON SPECIFICATIONS
Item
Storage humidity
Operating temperature
Storage temperature
Temp. rise at full load
Lead temperature
No-load power consumption
Cooling
Short circuit protection
Case material
MTBF
Weight
1.5mm from case for 10 seconds
Test Conditions
Units
%
°C
have been tested according to the following
recommended testing circuit before leaving factory
(Figure 1). This series should be tested under
load.
Vin
Cin
+Vout
DC
DC
0V
-Vout
+Vout
DC
DC
0V
GND
Note:
1.All specifications measured at TA=25°C, humidity<75%, nominal input voltage and rated output load
unless otherwise specified.
2.See below recommended circuits for more details.
(Figure 1)
If you want to further decrease the input/output
ripple, you can increase capacitance properly or
choose capacitors with low ESR. However, the
capacitance of the output filter capacitor must be
proper. If the capacitance is too big, a startup
problem might arise. For every channel of output,
provided the safe and reliable operation is
ensured, the greatest capacitance of its filter
capacitor sees (Table 1). General:
Cin: 5V&12V
100μF
24V&48V
10μF-47μF
Cout: 10μF/100mA
Output External Capacitor Table(Table 1)
Dual Vout
Cout
Single Vout
Cout
(VDC)
(uF)
(VDC)
(uF)
3.3
2200
±5
680
5
1000
±9
470
12
470
±12
330
15
330
±15
220
Input Current
When it is used in unregulated power supply, be
sure that the fluctuating range of the power supply
and the rippled voltage do not exceed the module
TYPICAL CHARACTERISTICS
100
Operating Temp.(
C
)
OUTLINE DIMENSIONS&
PIN CONNECTIONS
First Angle Projection
(0.094)
RECOMMENDED FOOTPRINT
Top
view,grid:2.54mm(0.1inch),
di amete r:1.0 0mm(0 .039 inch)
Dual Output
23 22
16
14
32.00(1.260)
20.00 (0.787)
(0.600)
2 3
11
(
Bottom View
)
23 22
16
14
2 3
9
11
2.54
(0.100)
22.86 (0.900)
4.57
(0.180)
Single Output
23 22
16
14
standard. Input current of power supply should
afford the startup current of this kind of DC/DC
module (See figure 2), General: Ip
≤1.4*Iin-max
Input Current(A)
(
Side View
)
10.00
(0.394)
2 3
11
Ip
0.50
(0.020)
FOOTPRINT DETAILS
Pin
2,3
9
11
14
16
22,23
Single
GND
No Pin
NC
+Vo
0V
Vi n
Dual
GND
0V
-Vo
+Vo
0V
Vin
4.10
(0.161)
Input Voltage
Range
Note:
Unit:mm(inch)
Pin diameter:0.50mm(0.020inch)
Pin tolera nces:
±
0.10mm(
±
0.004inch)
Gen eral tolerances:
±
0.2 5mm(
±
0.010inch)
Input Voltage (V)
NC:No Connection
No parallel connection or plug and play.
WRA_ZP-3W & WRB_ZP-3W
A/1-2008
Page 2 of 2
MORNSUN reserves the copyright
Specifications subject to change without notice.
MORNSUN [ MORNSUN SCIENCE& TECHNOLOGY LTD. ]
