ng=0 cellspacing=0 width=100%>
Yahoo! is not affiliated with the authors of this page or responsible for its content.
HHS04Z52 DC-DC Converter Data Sheet

MAR 06, 2006 revised to APR 20, 2006
Page
1 of 11

www.power-one.com
HHS04Z52 DC-DC Converter Data Sheet
48 V Input, 52.5 V @ 3.8 A Half-Brick Converter

Applications
Next-generation IP Telephony & Power Over LAN
(Unit is compliant to IEEE802.3af)
Distributed power architectures
Benefits
Simplifies power system design, reduces design
time and technical risk
Reduces PCB area occupied by power
conversion and power management components

Features
RoHS lead solder exemption compliant
200 Watt output power capability
Standard ½-brick footprint and pinout
Fully regulated 52.5 VDC output
Efficiency up to 92%
Input-to-output isolation: 2,250 VDC
Basic
insulation
Output overcurrent protection
Output overvoltage protection
Overtemperature
protection
Remote
sense
Remote on/off (primary referenced)
Safety:
UL60950-3
rd
/ CSA C22.2 60950-00,
TUV EN60950:2001, IEC60950-1:2001
Description
The HHS04Z52 is a DC-DC converter that operates over an input voltage range of 36 to 75 VDC and provides
regulated 52.5 V output rated up to 3.8 amps (200 watts) of continuous output current. The output is fully isolated
from the input, which allows a positive or negative output voltage configuration.
The standard feature set includes remote on/off, remote sensing, undervoltage lockout, overtemperature
protection, output overvoltage protection, output trim, and a dedicated pin that connects to the baseplate.
The highly efficient topology and thermally-optimized construction allow this unit to provide high output current
over a wide operating temperature range while maintaining a safe guardband of electrical and thermal component
deratings. The addition of an external heat sink further increases the capacity of the unit.
The HHS04Z52 employs 100% surface-mount components for consistency and reliability in the production
process.

Model Selection

Model
Input
Voltage
VDC
Input
Current,
Max ADC
1

Output
Voltage
VDC
Output Rated
Current I
rated
ADC
Output
Ripple/Noise,
mV p-p
2

Typical
Efficiency @
I
rated
%
HHS04Z52-NT 36-75 6.11
52.5
3.8
150
92
NOTES:
1
@ V
IN
min.
2
(DC to 500 kHz)

MAR 06, 2006 revised to APR 20, 2006
Page
2 of 11

www.power-one.com
HHS04Z52 DC-DC Converter Data Sheet
48 V Input, 52.5 V @ 3.8 A Half-Brick Converter
1. Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings may cause performance degradation, adversely effect
long-term reliability, and cause permanent damage to the converter.

Parameter Conditions/Description
Min
Max
Units
Input voltage
Continuous
36
75
VDC
Operating Temperature
Baseplate Temperature
0
110
°C
Storage Temperature
Ambient
-55
125
°C
ON/OFF Control Voltage
Referenced to -Vin

20
VDC
Output Power


260
W

2. Environmental and Mechanical Specifications
Parameter Conditions/Description Min
Nom
Max
Units
Baseplate 0

110
°C
Operating Temperature
Ambient
1
0

85
°C
Operating Humidity
Relative Humidity, Non-cond.


95
%
Storage Humidity
Relative Humidity, Non-cond.


95
%
Water Washing
Standard process
Yes

Shock
Halfsine wave, 3 axes
50


g
Sinusoidal Vibration
GR-63-CORE, Section 5.4.2
1


g
Weight

2.4
(68) Oz(g)
Dimensions (Overall)
2.28 L
(58.0 )

2.4 W
(61.0)
0.42 H
(10.67)
in
(mm)
MTBF (calculated)
per MIL-STD-217E, Ta = 30
O
C, or
Bellcore TR-NWT-000332 method 1
- ports count
2
MHrs
1
See Figure 9, Power derating curve.

3. Isolation
Specifications
All specifications apply over specified input voltage, output load, and temperature range, unless otherwise noted.
Parameter Conditions/Description Min
Nom
Max
Units
Insulation Safety Rating

Basic

Input to Output
2250


VDC
Input to Baseplate
1500


VDC
Isolation Voltage
Output to Baseplate
1500


VDC
Isolation Resistance
Input to Output
10


M
Input to Output
-
-
5
nF
Input to Baseplate
-
-
1
nF
Capacitance
Output to Baseplate
-
-
12.5
nF






MAR 06, 2006 revised to APR 20, 2006
Page
3 of 11

www.power-one.com
HHS04Z52 DC-DC Converter Data Sheet
48 V Input, 52.5 V @ 3.8 A Half-Brick Converter
4. Safety Regulatory Compliance
Safety Agency
Standard Approved To:
Marking
Underwriters Laboratories
UL60950-
3RD
/ CSA60950-00
cULus
TUV product Service
TUV EN60950:2001
TUV PS Baurt mark
CB report
IEC60950-1:2001
N/A.

5. Input
Specifications
All specifications apply over specified input voltage, output load, and temperature range, unless otherwise noted.
Parameter Conditions/Description Min
Nom
Max
Units
Input Voltage
Continuous
36
48
75
VDC
Maximum Input Current
Vin =36 V, Iou t= I
rated


6.11
ADC
Turn-On Input Voltage (UVLO)
Ramping Up
36
37
38
VDC
Turn-Off Input Voltage
Ramping Down
33.5
35.5
35.9
VDC
Input Reflected Ripple Current
I
rated
, 12µH source inductance
BW=20 MHz
1

2.6
2
7.5 mA
p-p
Inrush Transient
Vin = Vin.max


2
A
2
s
1
See Figure 1 for measurement method.
2
Vin = 48 V

MAR 06, 2006 revised to APR 20, 2006
Page
4 of 11

www.power-one.com
HHS04Z52 DC-DC Converter Data Sheet
48 V Input, 52.5 V @ 3.8 A Half-Brick Converter

6. Output
Specifications
All specifications apply over specified input voltage, output load, and temperature range, unless otherwise noted.
Parameter Conditions/Description Min
Nom
Max
Units
Output Voltage

-
52.5
-
VDC
Set-point Accuracy:
(Vin = 48 V, Io = 3.8 A)
-1.5
-
+1.5-
%
Vout
Output Line Regulation:
(Vi = 36 V to 75 V)


100
mV
Output Load Regulation:
(Io,min to Io,max)


100
mV
Combined Output Voltage Regulation

Includes all above plus Temp.Co.
& Aging.
5

50.93 52.5 54.07 VDC
Output Current
I
rated
0

3.8
ADC
T
AMB
=25
°C, Vin
NOM
, Iout=3.8 A
92 %
Efficiency
1

T
AMB
=25
°C, Vin
NOM
, Iout=0.4 A
89 %
Switching Frequency
Fixed frequency

300

kHz
Output Ripple
2, 3

(DC to 500kHz)
(500kHz to 1MHz)
(1MHz to 20MHz)
Over line and load
Tamb= 0
°C to 85 °C



150
50
30

mVp-p
mVp-p
mVp-p
Turn-On Time
(via application of input voltage)
Time from Vin=UVLO to
regulation band
50
100 ms
Rise Time
From 10 to 90% of Vout.nom

25
30
ms
Turn-on Overshoot
Overall input voltage, load, and
temperature conditions
3
%Vout
Dynamic Regulation
4

Peak Deviation
Settling Time
75-100-75% load step change,
di/dt=1A/
s
to 1% error band


±0.5
200

±3
500

%Vout
s
Admissible Load Capacitance

0

1,000
F
1
See Figure 1.
2
See Figure 4 for test setup
3
Output ripple may exceed the specification for Io < 0.2 Amps.
4
Measured @ Remote Sense pins, C
LOAD
= 200 F min, Settling Time (Vo, 1% of Vo1)
5
Aging < 7 years, Tamb. = 0
°
C to +70
°
C

MAR 06, 2006 revised to APR 20, 2006
Page
5 of 11

www.power-one.com
HHS04Z52 DC-DC Converter Data Sheet
48 V Input, 52.5 V @ 3.8 A Half-Brick Converter

7. Protections
Specifications
All specifications apply over specified input voltage, output load, and temperature range, unless otherwise noted.
Parameter Conditions/Description Min
Nom
Max
Units
Overcurrent Protection
Type
Non-latching Constant current mode, auto-recovery,
may hiccup during short circuit.
Threshold

4.8 7.5
ADC
Short Circuit



3.8
A
RMS

Overvoltage Protection
Type
Latching; recycle input voltage to unlatch
Threshold
Vin = Vin.nom, Iout=I
rated
58 65
VDC
Overtemperature Protection
Type Non-latching,
auto-recovery
Threshold Baseplate
temperature
112

120
°C
Hysteresis

10
°C

8. Feature
Specifications
All specifications apply over specified input voltage, output load, and temperature range, unless otherwise noted.

Parameter Conditions/Description Min
Nom
Max
Units
On/Off
(On/Off signal is low converter is ON)
Converter ON
Sink current

-0.5


0.5

1.2
0.75

VDC
mADC
Negative Logic (-N suffix)

On/Off (pin 3)
(Primary side ref. to -Vin)
Converter OFF
Open circuit voltage
2.5
2.0
20

VDC
VDC
Positive Logic
1







Remote Sense
2





Remote Sense Headroom

0.5


VDC

Output Voltage Trim

2





Trim Up
Vin = Vin.nom, Iout = I
rated


0.5
VDC
Trim Down
Vin = Vin.nom, Iou t= I
rated
-2.5


VDC


1
Consult factory for availability of this option.
2
Combined output voltage positive adjustment cannot
exceed 0.5 VDC.
MAR 06, 2006 revised to APR 20, 2006
Page
6 of 11

www.power-one.com
HHS04Z52 DC-DC Converter Data Sheet
48 V Input, 52.5 V @ 3.8 A Half-Brick Converter
9. Performance
Characteristics

9.1 Efficiency

HHS04Z52-NT, EFFICIENCY VS. LOAD RESPONSE
40
45
50
55
60
65
70
75
80
85
90
95
100
10
20
30
40
50
60
70
80
90
100
LOAD %
E
F
F
I
CI
E
NCY

%
EFF.(38V)
EFF.(48V)
EFF.(75V)

Figure 1. HHS04Z52 Efficiency vs. Output Current

9.2 Startup
Characteristics


Figure 2. HHS04Z52 Startup Waveform
Channel 1 input voltage =