ALQ15GM48 - Emerson Network Power - Embedded Power

Technical Reference Notes

ALQ15XX48X Series

(Open Frame Dual Output Quarter Brick)

MODEL: ALQ15 SERIES SHEET 1 OF 18

OCTOBER 4, 2002 - REVISION A1

ALQ15 Dual Output Open-Frame DC-DC Converter Module

Industry Standard ¼ Brick: 36V-75V Input / 60W Output Power

The ALQ15 series is Astec's latest dual output; high-density converter offering that comes in an industry standard ¼ brick

open-frame package. With its independently controlled output rails, the module practically eliminates cross regulation effects

which has been an issue to most dual converters available in the market. The ALQ15 series has been designed to deliver 60W

of clean, well-regulated, low noise DC power for today's demanding loads at respectable efficiency levels: 3.3V-2.5V

combination @ 87% (60W output power). Output combinations currently available are 3.3V/2.5V - 3.3V/1.8V - 2.5V/1.5V,

with each output rail able to deliver 15A max. The module comes with standard feature sets such as output enable with positive

or negative options; output voltage-adjust; over current, over voltage and over temperature protection. In addition, it is also

being offered at both 5mm (std) and 3.7mm pin lengths.

Special Features

• Tightly regulated for a dual output at < 1%

• Low Ripple and Noise at < 30mVPK-PK

• Industry Standard ¼ Brick Footprint

• Positive and Negative Enable Options

• Regulation to Zero Load

• High Capacitive Load Start-up

• Fixed Switching Frequency at 350kHz

• Output Trim

• Input Under-Voltage Lockout

Environmental Specifications

• -40ºC to 85ºC Operating Temperature

• -40ºC to 125ºC Storage Temperature

• MTBF > 1 million hours

Electrical Parameters

Input

Input Range 36-75 VDC

Input Surge 100V / 100ms

Efficiency 3.3V/2.5V @ 87% (Typ at 60W)

3.3V/1.8V @ 86%

2.5V/1.5V @ 83%

Control

Enable TTL compatible

(Positive and Negative Enable Options)

Output

Load Current 15A max per channel (60W max)

Regulation < 1% VO

Ripple and Noise 30mVPK-PK max

Output Voltage

Adjust Range ±10% V

Transient Response 2% VO deviation (Typ)

50% to 75% Load Change

< 300µµsec settling time (Typ)

Over Current

Protection 135% IO,max

Safety

UL + cUL 60950, Recognized (Pending)

EN60950 through TUV-PS (Pending)

Technical Reference Notes

ALQ15XX48X Series

(Open Frame Dual Output Quarter Brick)

MODEL: ALQ15 SERIES SHEET 2 OF 18

OCTOBER 4, 2002 - REVISION A1

ALQ15 Series

THIS SPECIFICATION COVERS THE REQUIREMENTS FOR A NEW ¼-BRICK SIZE

15A/CHANNEL DUAL OUTPUT HIGH EFFICIENCY DC/DC CONVERTER.

MODEL NAME CONSTRUCTION VOUT / IOUT

ALQ15FG48 Open Frame 3.3V-15A / 2.5V-15A

ALQ15FY48 Open Frame 3.3V-15A / 1.8V-15A

ALQ15GM48 Open Frame 2.5V-15A / 1.5V-15A

ALQ15AF48 Open Frame 5.0V-12A / 3.3V-15A

OPTIONS: SUFFIX

Negative Enable: "N"

Positive Enable: No suffix

3.7mm (nom) Pin Length: "-6"

Technical Reference Notes

ALQ15XX48X Series

(Open Frame Dual Output Quarter Brick)

MODEL: ALQ15 SERIES SHEET 3 OF 18

OCTOBER 4, 2002 - REVISION A1

Electrical Specifications

STANDARD TEST CONDITION on a single module unless otherwise specified.

TA: 25ºC (Ambient Air)

+VIN:PIN 1 48V ± 2V

ENABLE: PIN 2 Open (Positive Enable)

-VIN:PIN 3 Return Pin for +VIN

+VOUT2:PIN 4 Connect to Load 2

-VOUT:PIN 5 Return Pin for Load 1 & 2

TRIM: PIN 6 Open

+VOUT1:PIN 7 Connect to Load 1

ABSOLUTE MAXIMUM RATINGS

Stresses in excess of the absolute maximum ratings can cause permanent damage to the converter. Functional

operation of the device is converter is not implied at these or any other conditions in excess of those given in the

operational section of the specs. Exposure to absolute maximum ratings for extended period can adversely affect

device reliability.

Parameter Device Symbol Min Typ Max Unit

Input Voltage:

Continuous

Transient(100ms) : All

All VIN

VI N, trans

-75

100 Vdc

Vdc

Operating Ambient Temperature1All TA-40 -+85 ºC

Storage Temperature All TSTG -55 -125 ºC

Operating Humidity All ---85 %

I/O Isolation All -1500 - - Vdc

Maximum Enable Voltage All TBD Vdc

NOTE: 1. Power must be derated at 85oC (refer to Figures 15 to 17).

Technical Reference Notes

ALQ15XX48X Series

(Open Frame Dual Output Quarter Brick)

MODEL: ALQ15 SERIES SHEET 4 OF 18

OCTOBER 4, 2002 - REVISION A1

Electrical Specifications (continued)

INPUT SPECIFICATION

Parameter Device Symbol Min Typ Max Unit

Operating Input Voltage All VIN 36 48 75 VDC

Maximum Input Current2

Conditions: VIN = between 0 to VIN,min

IO = IO,max; TA = 25 ºC

All IIN,max - - 2.25 A

Input Reflected Ripple Current3

Conditions: PO = PO,max; TA = 25 ºC All II1/ II2 -10 25 mAPK-PK

Standing Loss

Condition: VIN = VIN,nom; TA = 25 ºC All ---3.5 W

NOTE: 2. This power module is not internally fused. An input line fuse (e.g. Little fuse 3AB /322003 or 314003) is

recommended.

3. See Figure 1 for Input Reflected Ripple Current Test Setup.

OUTPUT SPECIFICATIONS

Parameter Device Symbol Min Typ Max Unit

Voltage Setpoint

Conditions: VI = VIN,nom; TA = 25 ºC;

VO1: IO1 = IO,max; PO = 60W

VO2: IO2 = IO,max; PO = 60W

VO1/ V O2

3.25 / 2.46

3.25 / 1.76

2.46 / 1.47

4.93 / 3.25

3.30 / 2.50

3.30 / 1.80

2.50 / 1.50

5.00 / 3.30

3.35 / 2.54

3.35 / 1.84

2.54 / 1.53

5.08 / 3.35

Vdc

Load Current 3.3V

2.5V

1.8V

1.5V

5.0V

IO1/IO2

15.0

12.0

Combined Output Power

PO = PO1 + PO2

Line Regulation:

Conditions: VIN = VIN,min to VIN,max;

IO1 = IO,max, IO2 = IO,min

VI = VIN,min to VIN,max;

IO1 = IO,min, IO2 = IO,max

All - - 0.1 %Vo

Technical Reference Notes

ALQ15XX48X Series

(Open Frame Dual Output Quarter Brick)

MODEL: ALQ15 SERIES SHEET 5 OF 18

OCTOBER 4, 2002 - REVISION A1

Electrical Specifications (continued)

OUTPUT SPECIFICATIONS

Parameter Device Symbol Min Typ Max Unit

Regulation

Load4

Conditions: IO = 1A to IO,max;

VIN =VIN,nom

All - - 1.0 %Vo

Temperature

Conditions: TA = -40 ºC to +65 ºC;

VIN = VIN,nom; IO = IO,max

All - - 2%Vo

Output Ripple and Noise:

Peak-to-Peak5

Conditions: IO = IO,max; VIN =VIN,nom;

BW = 20 MHz;

TA =25 oC

3.3

2.5

1.8

1.5

5.0

mVPK-PK

External Load Capacitance6All - - 10000 µF

Over Current Limit Inception

Conditions: Vo = 90% VO,nom;

IO2 = IO,min; VIN = VIN,nom

Characteristics: Hiccup mode,

auto-recovery

All

5.0V IO,OCP

IO,OCP

16.5

13.2 -

-25

20 A

Output Short Circuit

Conditions: VIN = VIN,nom; IO2 = 0A

TA = 25 ºC All IOPK

IORMS

IODC

IINS

- - 28

150

APK

ARMS

Efficiency

Conditions: VIN = VIN,nom; TA = 25 ºC

PO = PO,max, balanced

current loading

85.0

84.0

81.0

87.5

87.0

86.0

83.0

88.5

Switching Frequency

Note: Can be determined from output

ripple waveform

All -225 250 275 KHz

NOTE: 4. Channel under test shall follow the specified conditions while the other channel is set to min load, 0A.

5. Channel under test shall be set to full load with the other channel set to IO, min - See Fig 2.

6. Refer to YSC plots on Fig 18 and 19 to determine loop stability at various output load impedance.

Technical Reference Notes

ALQ15XX48X Series

(Open Frame Dual Output Quarter Brick)

MODEL: ALQ15 SERIES SHEET 6 OF 18

OCTOBER 4, 2002 - REVISION A1

Electrical Specifications (continued)

OUTPUT SPECIFICATIONS

Parameter Device Symbol Min Typ Max Unit

Dynamic Response7

Conditions: ∆IO/∆t = 1A/10µs ;

VIN = VIN,nom ; TA = 25°C

Peak Voltage Deviation

Load Change: IO = 50% to 75% IO,max

All - - 2 4 %Vo

Transient Settling Time

Note: VO,nom (ref.)

(from ref. to 0.1∆VPK)

All - - - 500 µsec

Peak Voltage Deviation

Load Change: IO = 50% to 25% IO,max

All - - 2 4 %VO

Transient Settling Time

Note: VO,nom (ref.)

(from ref. to 0.1∆VPK)

All - - - 500 µsec

Turn-On Time

Conditions: VIN = VIN,min; IO1 = IO,max,

IO2 = IO,min; TA = 25°C

Note: VO1 within 1%

All - - 6 32 msec

Output Voltage Overshoot

Conditions: VIN = VIN,nom; TA = 25°C;

PO = 0W

All - - - 4%VO

NOTE: 7. Dynamic response tested with 10uF-aluminum and 1uF-tantalum capacitors across the load.

FEATURE SPECIFICATION

Parameter Device Symbol Min Typ Max Unit

Undervoltage Lockout

Turn-on Point

Turn-off Point All

All -

32 34.5

33.5 36.0

-V

Output Voltage Adjustment Range

Conditions: VIN = VIN,nom; TA = 25°C

VO1:IO1 = IO,max, IO2 = IO,min

VO2: IO1 = IO,min; IO2 = IO,max

Note: Tolerance = ± 1%

All -90 -110 %VO

Technical Reference Notes

ALQ15XX48X Series

(Open Frame Dual Output Quarter Brick)

MODEL: ALQ15 SERIES SHEET 7 OF 18

OCTOBER 4, 2002 - REVISION A1

Electrical Specifications (continued)

FEATURE SPECIFICATION

Parameter Device Symbol Min Typ Max Unit

Enable Pin Voltage

POSITIVE LOGIC

Logic Low: Module OFF

Logic High: Module ON

w/o N-

Suffix VENABLE

VENABLE

1.8 -

-2.5

5.0 V

NEGATIVE LOGIC

Logic Low: Module ON

Logic High: Module OFF

N-

Suffix VENABLE

VENABLE

1.8 -

-2.5

5.0 V

Enable Pin Current

Logic Low

Logic High: (ILKG at VENABLE = 5V) All

All IENABLE

IENABLE

-1.0

50 mA

µA

Module Output Voltage

at Logic High (Negative Enable)

at Logic Low (Positive Enable)

N-

Suffix

w/o N-

Suffix

1.2

Output Over Voltage Clamp

Conditions: VIN = VIN,nom; TA = 25°C

Characteristics: Latching mode;

auto-tracking wrt Vout

trim

3.3V

2.5V

1.8V

1.5V

5.0V

VO,CLAMP

3.8

2.8

2.0

1.7

5.7

3.9

2.9

2.1

1.8

6.0

4.5

3.5

2.5

2.2

6.3

Over-Temperature Shutdown

Note: 1. Tcomp(max) < 140 °C

2. Measured in the vicinity

of pin 3 and R29

All TB110 115 120 °C

ISOLATION SPECIFICATION

Parameter Device Symbol Min Typ Max Unit

Isolation Capacitance All - - 680 -pF

Isolation Resistance All -10 - - MΩ

Technical Reference Notes

ALQ15XX48X Series

(Open Frame Dual Output Quarter Brick)

MODEL: ALQ15 SERIES SHEET 8 OF 18

OCTOBER 4, 2002 - REVISION A1

SAFETY APPROVAL

The ALQ15 series have been certified through:

• UL + cUL 60950, Third Edition - Recognized (PENDING)

• EN 60950 through TUV-PS (PENDING)

• Basic Insulation

Figure 2. Peak to Peak Output Noise Measurement Setup.

Figure 1. Input Reflected Ripple Current Measurement Setup.

BATTERY Cs 220 uF

ESR < 0.1 OHM

@ 20 ºC, 100 kHz

Ltest

12 uH

33 uF

ESR < 0.7 OHM

@ 20 ºC, 100 kHz

Vi(+)

Vi(-)

TO OSCILLOSCOPE

Note: Measure the input reflected ripple current with a simulated source

inductance (Ltest) of 12uH. Capacitor Cs offsets possible battery/

source impedance. Measure current as shown above.

Vo(+)

Vo(-)

RESISTIVE

LOAD

10 uF1 uF SCOPE

COPPER STRIP

Note: Use a 1µF 50V X7R ceramic capacitor and a 10µF 25V tantalum cap.

Scope measurement should be made using a BNC probe socket positioned

about 76mm (3 in.) away from the module’s output terminals. The ext.

capacitors should be placed between the BNC socket and the module’s

output terminals, with a minimum distance of 51mm (2in.) from the latter.

Technical Reference Notes

ALQ15XX48X Series

(Open Frame Dual Output Quarter Brick)

MODEL: ALQ15 SERIES SHEET 9 OF 18

OCTOBER 4, 2002 - REVISION A1

Basic Operation and Features

INPUT UNDER VOLTAGE LOCKOUT

To prevent any instability to the converter that may affect and consequently damage the end system, the ALQ15 series have

been designed to turn-on once VIN is in the voltage range of 34.5-36 VDC. Likewise, it has also been programmed to turn-off

when VIN drops down to 32-33.5 VDC.

OUTPUT VOLTAGE ADJUST/TRIM

The converter comes with a TRIM pin (PIN 6) which is used to adjust both outputs simultaneously by as much as 90% to

110% of its set point. This is achieved by connecting an external resistor as described below.

To INCREASE the output voltages, external RTRIM-UP resistor should be connected between TRIM PIN (Pin6) and RTN PIN

(Pin 5). Please refer to Figure 3 for the resistor configuration and Table 1 for the required resistor value in attaining the desired

output adjustment

To DECREASE the output voltages, external RTRIM-DOWN resistor should be connected between TRIM PIN (Pin 6) and VOUT1

(Pin 7). Please refer to Figure 4 for the resistor configuration and Table 1 for the required resistor value in attaining the desired

output adjustment.

TABLE 1. External trim resistor values to adjust the output voltages (in kΩΩ)

ALQ15FG48 (3.3V / 2.5V) ALQ15FY48 (3.3V / 1.8V) ALQ15GM48 (2.5V / 1.5V)

TRIM UP TRIM DOWN TRIM UP TRIM DOWN TRIM UP TRIM DOWN

∆∆ [%] RTRIM-UP RTRIM-DOWM RTRIM-UP RTRIM-DOWM RTRIM-UP RTRIM-DOWM

146.84 49.64 55.34 67.64 58.48 58.57

220.82 23.11 24.59 30.06 24.64 27.26

312.14 13.69 14.35 17.54 14.13 16.16

47.81 8.88 9.22 11.27 9.00 10.47

55.21 5.95 6.15 7.52 5.97 7.02

63.47 3.98 4.10 5.01 3.97 4.69

72.23 2.56 2.64 3.22 2.55 3.02

81.30 1.49 1.54 1.88 1.48 1.77

90.58 0.67 0.68 0.84 0.66 0.79

10 0.00 0.00 0.00 0.00 0.00 0.00

Figure 3. External Trim resistor setup to increase output. Figure 4. External Trim resistor setup to decrease output.

Technical Reference Notes

ALQ15XX48X Series

(Open Frame Dual Output Quarter Brick)

MODEL: ALQ15 SERIES SHEET 10 OF 18

OCTOBER 4, 2002 - REVISION A1

Basic Operation and Features (continued)

OUTPUT ENABLE

The ALQ15 comes with an Enable pin (PIN 2) which is primarily used to turn ON/OFF the converter. Both a Positive (no part

number suffix required) and a Negative (suffix “N” required) Enable Logic option is being offered. Please refer to Table 2 for

the Part Numbering Scheme.

For Positive Enable, the converter is turned on when the Enable pin is at logic HIGH or left open. The unit turns off when the

Enable pin is at logic LOW. On the other hand, the Negative Enable version turns on when the Enable pin is at logic LOW or

directly connected to -VIN. The unit turns off when the Enable pin is at Logic HIGH.

OUTPUT OVER VOLTAGE PROTECTION (OVP)

The Over Voltage Protection circuit will shut down the entire converter if any of the two output voltages exceeds the OVP

threshold limits. It will remain latched (shut down) until the OVP fault condition is removed and the input voltage is recycled.

OVER CURRENT PROTECTION (OCP)

The Over Current Protection circuit will shutdown the converter if any of the load current of either output reaches the OCP

threshold limits. The unit will automatically recover once the over current condition is removed. See Figure 12 for typical

output characteristic under an over current condition.

OVER TEMPERATURE PROTECTION (OTP)

The Over Temperature Protection circuit will shutdown the converter once the sensed location reaches the OTP range. This

feature prevents the unit from overheating and consequently going into thermal runaway which may further damage the

converter and the end system. Such overheating may be an effect of operation outside the given power thermal derating

conditions. Restart is possible once the temperature of the sensed location drops to less than 110°C.

Technical Reference Notes

ALQ15XX48X Series

(Open Frame Dual Output Quarter Brick)

MODEL: ALQ15 SERIES SHEET 11 OF 18

OCTOBER 4, 2002 - REVISION A1

Performance Curves

3.3V / 2.5V (FG SERIES)

Figure 7. Efficiency at VIN = 48V vs. Balanced Load

Current (IO1 = IO2) at various ambient temperatures and

with 100LFM airflow (Total Power = 60W)

Figure 8. Load Regulation vs. Ambient Temperature at

VIN = 48V.

3V3/2V5 Efficiency (IO1 = IO2))

1 2 3 4 5 6 7 8 9 10

Output Current On Each Channel [Adc]

Efficiency [%]

Vin = 36V

Vin = 48V

Vin = 75V

Figure 5. Efficiency for balanced Output Power (PO1 =

PO2) at various input voltages (PO1 + PO2 = 60W). Taken

w/ module mounted vertically w/ 300LFM airflow from

Pin 3 to 1 at TA = 25°C.

Figure 6. Efficiency vs. Balanced Output Current (IO1 =

IO2) at various input voltages (Total Power = 60W).

Load Regulation vs. Ambient Temp

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

-40 25 55

Ambient Temperature [ ºC]

Regulation (%)

3.3V Load Regulation

2.5V Load Regulation

48VIN Efficiency vs. Balanced Load Current

0 2 4 6 8 10

Output Current [A]

Efficiency [%]

-40 ºC

25 ºC

55 ºC

3V3/2V5 Efficiency (P O1 = PO2)

5 10 15 20 25 30 35 40 45 50 55 60

Output Power(Balanced Load)

Efficiency [%]

Technical Reference Notes

ALQ15XX48X Series

(Open Frame Dual Output Quarter Brick)

MODEL: ALQ15 SERIES SHEET 12 OF 18

OCTOBER 4, 2002 - REVISION A1

Performance Curves (continued)

3.3V / 2.5V (FG SERIES)

Figure 12. Typical output current waveform under an

Over Current Condition. Output current scale at 0.5A/

mV.

Figure 9. Line Regulation vs. Ambient Temperature.

Line Regulation vs. Ambient Temp

0.000

0.010

0.020

0.030

0.040

0.050

-40 25 55

Ambient Temperature [ºC]

Line Regulation [%]

3.3V Line Regulation

2.5V Line Regulation

Figure 11. Over Current trip point vs. Input Voltage at

25°C ambient temperature with 100LFM airflow.

Figure 10. Start-up characteristic of Vo1 (CH1) and Vo2

(CH2) at balanced load current; VIN = 48V.

Over Current Trip Point

36 40 44 48 52 56 60 64 68 72 76

Input Voltage [Vdc]

Output Current [Adc]

2.5V

3.3V

Technical Reference Notes

ALQ15XX48X Series

(Open Frame Dual Output Quarter Brick)

MODEL: ALQ15 SERIES SHEET 13 OF 18

OCTOBER 4, 2002 - REVISION A1

Performance Curves (continued)

3.3V / 2.5V (FG SERIES)

2.5V/1V5 (GM SERIES)

3V3/1V8 Efficiency (P O1 = PO2)

5 10 15 20 25 30 35 40 45 50 55 60

Output Power (Balanced Load)

Efficiency [%]

Figure 13. Efficiency for balanced Output Power (PO1 =

PO2) at various input voltages (PO1 + PO2 = 60W). Taken

w/ module mounted vertically w/ 300LFM airflow from

Pin 3 to 1 at TA = 25°C.

2V5/1V5 Efficiency (P O1 = PO2)

5 10 15 20 25 30 35 40 45 50 55 60

Output Power(Balanced Load)

Efficiency [%]

Additional curves to be provided on next release.

Figure 14. Efficiency for balanced Output Power (PO1 =

PO2) at various input voltages (PO1 + PO2 = 60W). Taken

w/ module mounted vertically w/ 300LFM airflow from

Pin 3 to 1 at TA = 25°C.

Technical Reference Notes

ALQ15XX48X Series

(Open Frame Dual Output Quarter Brick)

MODEL: ALQ15 SERIES SHEET 14 OF 18

OCTOBER 4, 2002 - REVISION A1

Performance Curves (continued)

CURRENT VS. TEMPERATURE CURVES

Output Power VS. Ambient Temperature (3V3/2V5)

25 35 45 55 65 75 85

Ambient Temperature [ºC]

Output Power [W]

0 LFM

100 LFM

200 LFM

300 LFM

400 LFM

500 LFM

Output Power VS. Ambient Temperature (3V3/1V8)

25 35 45 55 65 75 85

Ambient Temperature [ºC]

Output Power [W]

0 LFM

100 LFM

200 LFM

300 LFM

400 LFM

500 LFM

Output Power VS. Ambient Temperature (2V5/1V5)

25 35 45 55 65 75 85

Ambient Temperature [ºC]

Output Power [W]

0 LFM

100 LFM

200 LFM

300 LFM

400 LFM

500 LFM

Figure 15. Combined Output Power (balanced

load: IO1 = IO2) vs. Ambient Temperature

Curves for ALQ15FG48 version taken at

various airflow conditions (converter mounted

vertically with airflow direction from PIN? to

PIN?; VIN = 48V nominal).

Figure 16. Combined Output Power (balanced

load: IO1 = IO2) vs. Ambient Temperature

Curves for ALQ15FY48 version taken at

various airflow conditions (converter mounted

vertically with airflow direction from PIN? to

PIN?; VIN = 48V nominal).

Figure 17. Combined Output Power (balanced

load: IO1 = IO2) vs. Ambient Temperature

Curves for ALQ15FY48 version taken at

various airflow conditions (converter mounted

vertically with airflow direction from PIN? to

PIN?; VIN = 48V nominal).

Technical Reference Notes

ALQ15XX48X Series

(Open Frame Dual Output Quarter Brick)

MODEL: ALQ15 SERIES SHEET 15 OF 18

OCTOBER 4, 2002 - REVISION A1

Young’s Stability Curves

ALQ15 3.3 volt channel

100 1.1031.1041.105

1.10 3

0.01

0.1

Impedance magnitude ohms

100 1.1031.1041.105

100

frequency Hz

Phase angle deg

ALQ15 2v5 volt channel

100 1.1031.1041.105

1.10 4

1.10 3

0.01

0.1

frequency Hz

Impedance magnitude ohms

100 1.1031.1041.105

100

frequency Hz

Phase deg

_______15°

_______30°

_______45°

_______60°

_______75°

_______90°

Figure 18. YSC Plots of 3V3 and 2V5 Output Channels.

Technical Reference Notes

ALQ15XX48X Series

(Open Frame Dual Output Quarter Brick)

MODEL: ALQ15 SERIES SHEET 16 OF 18

OCTOBER 4, 2002 - REVISION A1

Young’s Stability Curves (continued)

ALQ15 1v8 volt channel

100 1.1031.1041.105

1.10 3

0.01

0.1

frequency Hz

Impedance magnitude ohms

100 1.1031.1041.105

100

frequency Hz

Pahse deg

100 1.1031.1041.105

1.10 3

0.01

0.1

frequency Hz

Impedance magnitude ohms

ALQ15 1v5 volt channel

100 1.1031.1041.105

100

frequency Hz

Phase deg

_______15°

_______30°

_______45°

_______60°

_______75°

_______90°

Figure 19. YSC Plots of 1V8 and 1V5 Output Channels.

Technical Reference Notes

ALQ15XX48X Series

(Open Frame Dual Output Quarter Brick)

MODEL: ALQ15 SERIES SHEET 17 OF 18

OCTOBER 4, 2002 - REVISION A1

Mechanical Specifications

Parameter Device Symbol Min Typ Max Unit

Dimension All L-2.30 [58.42] -in [ mm ]

W-1.48 [37.59] -in [ mm ]

H-0.544 [13.82] -in [ mm ]

Weight -TBD g [oz]

PIN ASSIGNMENT

1+VIN 5RTN

2ENABLE 6TRIM

3-VIN 7+VOUT1

4+VOUT2

NOTE: Pin diameters at ∅ = 0.04" [ 1.02 mm] nominal.

Figure 20. ALQ15 series mechanical outline ( inches [(mm ]).

Technical Reference Notes

ALQ15XX48X Series

(Open Frame Dual Output Quarter Brick)

MODEL: ALQ15 SERIES SHEET 18 OF 18

OCTOBER 4, 2002 - REVISION A1

Mechanical Specifications (continued)

SOLDERING CONSIDERATIONS

The ALQ15 series converters are compatible with standard wave soldering techniques. When wave soldering, the

converter pins should be preheated for 20-30 seconds at 110°C and wave soldered at 260°C for less than 10 seconds.

When hand soldering, the iron temperature should be maintained at 425°C and applied to the converter pins for less

than 5 seconds. Longer exposure can cause internal damage to the converter. Cleaning can be performed with cleaning

solvent IPA or with water.

PART NUMBERING SCHEME FOR ORDERING

OUTPUT

VOLTAGE 1 OUTPUT

VOLTAGE 2 ENABLE LOGIC PIN LENGTH OPTION

ALQ15 wx48 yz

F = 3.3V G = 2.5V “Blank” = Positive “Blank”=5mm (Standard)

F = 3.3V Y = 1.8V "N" = Negative “-6” = 3.7mm

G = 2.5V M = 1.5V

A = 5.0V F = 3.3V

TABLE 2. Part Numbering information.

Please call 1-888-41-ASTEC for further inquiries

or visit us at www.astecpower.com