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APOLLO 2 SERIES
30 Amp Series of Dual Output 1/4 Brick DC/DC Converters
Document Title: Apollo 2 Series Datasheet
Revision: 04/07/A
www.cherokeepwr.com
Product Features
Delivers 15A Simultaneously on each output (30A Total)
Industry Standard Footprint (1.45” x 2.28” / 36.83mm x 57.91mm)
High Efficiency: 88% Typical (5 / 3.3V Model)
Fully Protected: Over Current, Over Voltage, Over Temperature
Meets ETSI 300-321-2 Isolation
Two Independently regulated high current output channels
KEY MARKET SEGMENTS & APPLICATIONS
Distributed Power
ATE Test Equipment
Switching Equipment Routers
RF Amplifiers
Networking
Wireless Communication
FEATURES
BENEFITS
Low Profile (0.417”/10.59mm) Supports tight card pitch required for telecom equipment
No External Bias Required Lower cost of ownership
NoMinimumLoadRequirements Nopreloadresistorsrequired;simplifiessystemdesign
ConstantFrequencyOperation Provides predictable EMI performance
Output Voltage Trim Range of
±10%
Permits custom voltages and voltage margining
Can Replace Two Single
Output 1/4 Brick
Reduces system board level space, minimizes inventory
liability
Minimal Cross-Channel
Interference
Maintains individual output performance
SPECIFICATIONS
30 Amp Dual Output 1/4 Brick DC/DC Converters
Output Models
QB1548A2
Output Channel
V1
V2
V1
V2
V1
V2
V1
V2
V1
V2
V1
V2
Nominal Output Voltage (V)
3.3 5.0
2.5 3.3
1.8 3.3
1.5 2.5
1.2 1.8
1.2 3.3
Maximum Output Current (A) 15
10
15
Maximum Output Power (W)
100
87
77
60
48
67.5
Efficiency (@ 48 Vdc Input)
88%
86%
85%
82%
78%
83%
Input Voltage Range
36 to 75Vdc
Input Current
3.14A (maximum at 36Vin, 100% load)
Input Reflected Ripple
50mA (pk-pk)
Input No Load
150mA @ 48Vdc
Output Voltage Setpoint
+/- 2%
Output Trim Range
+/- 10% of Vout nominal
Output Ripple / Noise
50mV (pk-pk typical)
Line Regulation
+/- 0.1% on V1 & V2
Line / Load Regulation
10mV on V1 & V2
Transient Response
Max deviation 100mV; Recovery time < 100s @ slew rate of 0.1A/s
Remote on / off Control
LOGIC 1 (TTL High) or open enables unit (ON); LOGIC 0 (TTL Low) or short shuts unit down (OFF)
Operating Temperature
-40 to 85°C Ambient (refer to derating curve)
Cooling
Convection cooled / Forced Air (refer to derating curve)
Dimensions
1.45” x 2.28” x 0.417” (36.8mm x 57.9mm x 10.59mm) open frame
Weight
35g
InternationalSafetyApprovals UL/cUL 60950, EN60950, CE Mark (LVD)
Specifications listed assume 25°C Ambient Operating Temperature and Full Load Operation unlesss otherwise specfified. This product is qualified for use in OEMequipment and is not appropriate for stand-alone operatiuon. The infor-
mation contained within this specification is believed to be true and correct at the time of publication, however, Cherokee International accepts no responsiblity for consequences arising from printing errors or inaccuracies. The informa-
tion and specifications contained herein are subject to change without notice.