GE Industrial Solutions QRW025 User Manual

Data Sheet

f

August 23, 2010

QRW025 Series Power Modules; dc-dc Converters

36Vdc - 75Vdc Input; 1.2 to 3.3 Vdc Output; 25A

RoHS Compliant

Applications

 Enterprise Networks
 Wireless Networks
 Access and Optical Network Equipment
 Enterprise Networks
 Latest generation IC’s (DSP, FPGA, ASIC) and

Microprocessor-powered applications.

Options

 Positive Remote On/Off logic
 Case ground pin (-H Base plate version)
 Auto restart after fault shutdown

Description

The QRW-series dc-dc converters are a new generation of DC/DC power modules designed for optimum efficiency
and power density. The QRW series provide up to 25A output current in an industry standard quarter brick, which
makes it an ideal choice for small space, high current and low voltage applications. The converter uses synchronous
rectification technology and innovative packaging techniques to achieve high efficiency reaching 91% at 3.3V full
load. Thanks to the ultra high efficiency of this converter, the power dissipation is such that for most applications a
heat sink is not required. In addition, th e QRW- se ries su pport s fu ture mig ra tio n of sem i condu ct o r and
microprocessor supply voltages do wn to 1.0V .

Features

 Compliant to RoHS EU Directive 2002/95/EC (-Z

versions)

 Compliant to ROHS EU Directive 2002/95/EC with

lead solder exemption (non-Z ve rsions)

 Delivers up to 25A output current
 Ultra High efficiency – 91% at 3.3V full load
 Industry standard DOSA Compliant Quarter brick:

57.9 mm x 36.8 mm x 9.5 mm
(2.28 in x 1.45 in x 0.375 in)

 Improved Thermal Performance:

25A at 70ºC at 1m/s (200LFM) for 3.3Vo

 High power density
 Low output ripple and noise
 Low output voltages down to 1V: Supports migration

to future IC and microprocessor supply voltages

 2:1 input voltage
 Remote Sense
 Remote On/Off
 Constant switching frequency
 Output overvoltage and Overcurrent protection
 Overtemperature protection
 Adjustable output voltage (+10% / -20%)
 Meets the voltage isolation requirements for

ETSI 300-132-2 and complies with and is licensed
for Basic Insulation rating per EN60950-1

 UL** 60950-1 Recognised, CSA

1-03 Certified, and VDE

‡

Edition) Licensed

 CE mark meets 2006/95/EC directive
 ISO* 9001 certified manufacturing facilities

†

C22.2 No. 60950-

0805 (IEC60950, 3rd

§

* ISO is a registered trademark of the International Organization of Standards

** UL is a registered trademark of Underwriters Laboratories, Inc.

†

CSA is a registered trademark of Canadian Standards Association.

‡

VDE is a trademark of Verband Deutscher Elektrotechniker e.V.

§ This product is intended for integration into end-use equipment. All of the required procedures of end-use equipment
should be followed.

PDF name:

QRW025_Series.pd

Data Sheet
August 23, 2010

QRW025 Series Power Modules; dc-dc Converters

36 Vdc - 75 Vdc Input, 1.2 to 3.3 Vdc Output; 25A

Absolute Maximum Ratings

Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute 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 the
device reliabiltiy.

Parameter Device Symbol Min Max Unit

Input Voltage:Continuous

Transient (100ms)

Operating Ambient Temperature
(See Thermal Considerations section)

Storage Temperature All Tstg –55 125 °C

I/O Isolation Voltage (100% factory Hi-Pot tested)
When using optional case ground pin
(option 7)

All VI

VI, trans

All TA –40 85 °C

— — — 1500

—
—

75

100

700

Vdc
Vdc

Vdc
Vdc

Electrical Specifications

Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions.

Parameter Device Symbol Min Typ Max Unit

Operating Input Voltage All VIN 36 48 75 Vdc

Maximum Input Current
(VI = 0 V to 75 V; IO = IO, max)

Inrush Transient All I

Input Reflected Ripple Current, peak-peak
(5 Hz to 20 MHz, 12 µH source impedance
See Test configuration section)

Input Ripple Rejection (120 Hz) All 60 dB

All — — 2.8m n Adc

2

t1A

All 16 mAp-p

2

s

CAUTION: This power module is not internally fused. An input line fuse must always be used.

This power module 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). Based on the information provided in this data sheet on inrush
energy and maximum dc input current, the same type of fuse with a lower rating can be used. Refer to the fuse manufacturer’s
data for further information.

Lineage Power 2

Data Sheet
August 23, 2010

QRW025 Series Power Modules; dc-dc Converters

36 Vdc - 75 Vdc Input, 1.2 to 3.3 Vdc Output; 25A

Electrical Specifications (continued)

Output Specifications for the QRW025A0P (Vo = 1.2Vdc)

Parameter Device Symbol Min Typ Max Unit

Output Voltage Set Point
(VI = 48 Vdc; IO = IO, min to IO, max, TA = 25 °C)

Output Voltage
(Over all operating input voltage, resistive load, and
temperature conditions at steady state until end of life.)

Output Regulation:

Line (VI = VI, min to VI, max)
Load (IO = IO, min to IO, max)
Temperature (TA = TA, min to TA, max)

Output Ripple and Noise

RMS (5 Hz to 20 MHz bandwidth)
Peak-to-peak (5 Hz to 20 MHz bandwidth)

External Load Capacitance — 25,000 µF

Output Current
(Vo =90% of VO, nom.)

Output Current-limit Inception
(VO = 90% of VO, set)

Output Short-circuit Current (Average)VO = 0.25 V Latched off

Efficiency
(VI = VIN, nom; IO = IO, max), TA = 25 °C

Switching Frequency All fSW — 300 — kHz

Dynamic Response

(ΔIO/Δt = 1 A/10 µs, VI = 48 V, TA = 25 °C); tested
with a 220 µF aluminium and a 1.0 µf ceramic
capacitor across the load.):
Load Change from
IO = 50% to 75% of IO, max:

Peak Deviation
Settling Time

(VO < 10% of peak deviation)

Load Change from IO = 50% to 25%

of IO, max :

Peak Deviation
Settling Time

(VO < 10% of peak deviation)

P Vo 1.18 1.2 1.22 Vdc

P Vo 1.15 — 1.25 Vdc

P—

—
—

P—

PIO0.0—25Adc

P IO, lim — 29 — Adc

η —85— %

—
—
—

—

0.05

0.05
5

—
—

8

200

8

200

0.3

0.3
20

30

100

%, VO, set
%, VO, set

mVrms

mVp-p

mV

mV

µs

mV

µs

Isolation Specifications

Parameter Symbol Min Typ Max Unit

Isolation Capacitance Ciso — 5600 — PF

Isolation Resistance Riso 10 — — MW

General Specifications

Parameter Min Typ Max Unit

Calculated MTBF (IO = 80% of IO, max TA = 40 °C) 1,771,000 Hours

Weight — 37(1.31) — g (oz.)

Lineage Power 3

Data Sheet
August 23, 2010

QRW025 Series Power Modules; dc-dc Converters

36 Vdc - 75 Vdc Input, 1.2 to 3.3 Vdc Output; 25A

Feature Specifications

Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions.
See Feature Descriptions for additional information

Parameter Symbol Min Typ Max Unit

Remote On/Off Signal Interface*

(VI = 0 V to 75 V; open collector or equivalent compatible; signal
referenced to VI(–) terminal; see Figure 34
and Feature Descriptions.):

Preferred Logic:

Logic Low—Module On
Logic High—Module Off

Optional Logic:

Logic Low—Module Off
Logic High—Module On

Logic Low:

At Ion/off = 1.0 mA
At Von/off = 0.0 V

Logic High:

At Ion/off = 0.0 µA
Leakage Current

Turn-on Time; see Typical Start-up Curve(IO = IO max;

Vo within ±1% of steady state)

Output Voltage Adjustment

(See Feature Descriptions):

Output Voltage Remote-sense Range
Output Voltage Set-point Adjustment Range (trim)

Output Overvoltage Protection VO, ovsd 1.42 — 1.58 V

Overtempera

WuUe Protection (IO = IO, max) Tref1 — 127 — °C

.

Von/off

Ion/off

Von/off

Ion/off

—
—

—

—
—

—
80

0

—
—

—
—

2

—
—

1.2

1.0

15
50

4

10

110

V

mA

V
µA
ms

%VO,rated

%V0,nom

Lineage Power 4

Data Sheet

0

INPUT CURRENT, I

(A)

0

100

OUTPUT CURRENT, IO (A)

TIME, t (1 µs/div)

OUTPUT VOLTA GE, V

(V)

TIME, t, (.2 µs/div)

OUTPUT CURRENT, I

(A)

V)

TIME, t, (.2 µs/div)

)

March 27, 2008

QRW025 Series Power Modules; dc-dc Converters

36 Vdc - 75 Vdc Input, 1.2 to 3.3 Vdc Output; 25A

Characteristic Curves

The following figures provide typical characteristics curves for the QRW025A0P (VO = 1.2 V) module at room temperature (TA
= 25 °C).The figures are identical for both on/off configurations.

1.2

1

I

0.8

0.6

0.4

0.2

0

0 102030405060708

INPUT VOL TA GE, VI (V)

IO = 25A

IO = 12.5A

IO = 2.5A

Figure 1. Input Voltage and Current Characteristics.

90
80
70
60
50
40
30

EFFICIENCY, η (%)

20
10

0

0 5 10 15 20 25 3

VI = 75V
V

I = 48V

V

I = 36V

O (

(50 mV/div)

OUTPUT VOLTAGE, V

O

(5 A/div)

Tested with a 220µF aluminium and a 1.0µF ceramic

capacitor across the load.

Figure 4. Transient Response to Step decrease in

Load from 50% to 25% of Full Load (VI = 48
Vdc).

(V

O

(50 mV/div)

OUTPUT VOLTA GE, V
(A)

O

(5 A/div)

OUTPUT CURRENT, I

Figure 2. Converter Efficiency vs. Output Current.

Figure 5. Transient Response to Step Increase in Load

from 50% to 75% of Full Load (VI = 48 Vdc).

36V, 25A

O

48V, 25A

(20 mV/div)

75V, 25A

0.5

Figure 6. Start-up from Remote On/Off (IO = IO, max).

Figure 3. Output Ripple Voltage (IO = IO, max).

Lineage Power 5

Data Sheet
August 23, 2010

QRW025 Series Power Modules; dc-dc Converters

36 Vdc - 75 Vdc Input, 1.2 to 3.3 Vdc Output; 25A

Electrical Specifications (continued)

Output Specifications for the QRW025AOM (Vo = 1.5Vdc)

Parameter Device Symbol Min Typ Max Unit

Output Voltage Set Point
(VI = 48 Vdc; IO = IO, min to IO, max, TA = 25 °C)

Output Voltage
(Over all operating input voltage, resistive load, and
temperature conditions at steady state until end of life.)

Output Regulation:

Line (VI = VI, min to VI, max)
Load (IO = IO, min to IO, max)
Temperature (TA = TA, min to TA, max)

Output Ripple and Noise

RMS (5 Hz to 20 MHz bandwidth)
Peak-to-peak (5 Hz to 20 MHz bandwidth)

External Load Capacitance — 25,000 µF

Output Current
(Vo =90% of VO, nom.)

Output Current-limit Inception
(VO = 90% of VO, set)

Output Short-circuit Current (Average)VO = 0.25 V Latched off

Efficiency
(VI = VIN, nom; IO = IO, max), TA = 25 °C

Switching Frequency All fSW — 300 — kHz

Dynamic Response

(DIO/Dt = 1 A/10 µs, VI = 48 V, TA = 25 °C); tested
with a 220 µF aluminium and a 1.0 µf ceramic
capacitor across the load.):
Load Change from
IO = 50% to 75% of IO, max:

Peak Deviation
Settling Time

(VO < 10% of peak deviation)

Load Change from IO = 50% to 25%

of IO, max :

Peak Deviation
Settling Time

(VO < 10% of peak deviation)

MVo1.471.51.52Vdc

MVo1.45—1.55Vdc

M—

—
—

M—

MIO0.0—25Adc

M IO, lim — 30 — Adc

η —87— %

—
—
—

—

0.05

0.05
15

—
—

6

200

6

200

0.2

0.2
50

20

100

%, VO, set
%, VO, set

mVrms

mVp-p

mV

mV

µs

mV

µs

Isolation Specifications

Parameter Symbol Min Typ Max Unit

Isolation Capacitance Ciso — 5600 — PF

Isolation Resistance Riso 10 — — MW

General Specifications

Parameter Min Typ Max Unit

Calculated MTBF (IO = 80% of IO, max TA = 40 °C) 1,715,000 Hours

Weight — 37(1.31) — g (oz.)

Lineage Power 6

Data Sheet
August 23, 2010

QRW025 Series Power Modules; dc-dc Converters

36 Vdc - 75 Vdc Input, 1.2 to 3.3 Vdc Output; 25A

Feature Specifications

Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions.
See Feature Descriptions for additional information

Parameter Symbol Min Typ Max Unit

Remote On/Off Signal Interface*

(VI = 0 V to 75 V; open collector or equivalent compatible; signal
referenced to VI(–) terminal; see Figure 34

and Feature Descriptions.):

Preferred Logic:

Logic Low—Module On
Logic High—Module Off

Optional Logic:

Logic Low—Module Off
Logic High—Module On

Logic Low:

At Ion/off = 1.0 mA
At Von/off = 0.0 V

Logic High:

At Ion/off = 0.0 µA
Leakage Current

Turn-on Time; see Typical Start-up Curve(IO = IO max;

Vo within ±1% of steady state)

Output Voltage Adjustment

(See Feature Descriptions):

Output Voltage Remote-sense Range
Output Voltage Set-point Adjustment Range (trim)

Output Overvoltage Protection VO, ovsd 1.69 — 2.07 V

Overtempera

* A Minimum OFF Period of 1 sec is recommended.

WuUe Protection (IO = IO, max) Tref1 — 127 — °C

.

Von/off

Ion/off

Von/off

Ion/off

—
—

—

—
—

—
80

0

—
—

—
—

2

—
—

1.2

1.0

15
50

4

10

110

V

mA

V
µA
ms

%VO,rated

%V0,nom

Lineage Power 7

Data Sheet

5

INPUT VOLTAGE, VI (V)

INPUT CURRENT, I

(A)

90

5

OUTPUT CURRENT, IO (A)

TIME, t (1 µs/div)

OUTPUT VOLTAGE,

TIME, t (50 µs/div)

,

)

TIME, t (50 µs/div)

,

)

August 23, 2010

QRW025 Series Power Modules; dc-dc Converters

36 Vdc - 75 Vdc Input, 1.2 to 3.3 Vdc Output; 25A

Characteristic Curves

The following figures provide typical characteristics curves for the QRW025A0M (VO = 1.5 V) module at room temperature
(TA = 25 °C)

1.4

1.2

I

1

0.8

0.6

0.4

0.2
0

25 35 45 55 65 7

IO = 25 A

IO = 12.5 A

IO = 0 A

Figure 7. Input Voltage and Current Characteristics.

88
86
84
82
80
78
76

EFFICIENCY η (%)

74
72
70

0 5 10 15 20 2

VI = 36 V
V

I

= 48 V

V

I

= 75 V

Figure 8. Converter Efficiency vs. Output Current.

(V) (100 mV/idv

O

V

OUTPUT VOLT AGE

(A) (5 A/div)

O

I

OUTPUT CURRENT,

Tested with a 220µF aluminium and a 1.0µF ceramic capacitor
across the load.

Figure 10. Transient Response to Step Decrease in

Load from 50% to 25% of Full Load (VI = 48
Vdc).

(V) (100 mV/idv

O

V

OUTPUT VOLT AGE

(A) (5 A/div)

O

I

OUTPUT CURRENT,

Figure 11. Transient Response to Step Increase in

Load from 50% to 75% of Full Load (VI = 48
Vdc).

36V, 25A

0.

48V, 25A

VO (V) (20 mV/idv)

75V, 25A

Tested with a 10µF aluminium and a 1.0µF tantalum capacitor

Figure 9. Output Ripple Voltage (IO = IO, max).

across the load.

Figure 12. Start-up from Remote On/Off (IO = IO, max).

Lineage Power 8

Data Sheet
August 23, 2010

QRW025 Series Power Modules; dc-dc Converters

36 Vdc - 75 Vdc Input, 1.2 to 3.3 Vdc Output; 25A

Electrical Specifications (continued)

Output Specifications for the QRW025A0Y (Vo = 1.8Vdc)

Parameter Device Symbol Min Typ Max Unit

Output Voltage Set Point
(VI = 48 Vdc; IO = IO, min to IO, max, TA = 25 °C)

Output Voltage
(Over all operating input voltage, resistive load, and
temperature conditions at steady state until end of life.)

Output Regulation:

Line (VI = VI, min to VI, max)
Load (IO = IO, min to IO, max)
Temperature (TA = TA, min to TA, max)

Output Ripple and Noise

RMS (5 Hz to 20 MHz bandwidth)
Peak-to-peak (5 Hz to 20 MHz bandwidth)

External Load Capacitance — 25,000 µF

Output Current
(Vo =90% of VO, nom.)

Output Current-limit Inception
(VO = 90% of VO, set)

Output Short-circuit Current (Average)VO = 0.25 V Latched off

Efficiency
(VI = VIN, nom; IO = IO, max), TA = 25 °C

Switching Frequency All fSW — 300 — kHz

Dynamic Response

(DIO/Dt = 1 A/10 µs, VI = 48 V, TA = 25 °C); tested
with a 220 µF aluminium and a 1.0 µf ceramic
capacitor across the load.):
Load Change from
IO = 50% to 75% of IO, max:

Peak Deviation
Settling Time

(VO < 10% of peak deviation)

Load Change from IO = 50% to 25%

of IO, max :

Peak Deviation
Settling Time

(VO < 10% of peak deviation)

Y Vo 1.77 1.8 1.83 Vdc

Y Vo 1.75 — 1.85 Vdc

Y—

—
—

Y—

YIO0.0—25Adc

Y IO, lim — 30 — Adc

η —88— %

—
—
—

—

0.05

0.05
15

—
—

8

200

8

200

0.2

0.2
50

35

100

%, VO, set
%, VO, set

mVrms

mVp-p

mV

mV

µs

mV

µs

Isolation Specifications

Parameter Symbol Min Typ Max Unit

Isolation Capacitance Ciso — 5600 — PF

Isolation Resistance Riso 10 — — MW

General Specifications

Parameter Min Typ Max Unit

Calculated MTBF (IO = 80% of IO, max TA = 40 °C) 1,644,000 Hours

Weight — 37(1.31) — g (oz.)

Lineage Power 9