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Pico Electronics: QP SERIES

QP SERIES

Miniature DC/DC Converters
5 to 500Vdc, Isolated, 50 Watt Regulated Outputs
Wide Inpt Voltage Ranges
4.9 - 9 Vdc / 9 - 18 Vdc / 18 - 36 Vdc / 36 - 72 Vdc (NEW)

Isolated, Regulated Outputs
High Efficiency, Low Ripple
0°C to +85°C Operating Temperature, Base Plate
Miniature - Low Profile (2.5" x 1.55" x 0.5") - PCB Mountable
High Reliability DC-DC Converters

NEW

Wide Input Range
6QP
4.5 - 9 Vdc
12QP
9 - 18 Vdc
24QP
18 - 36 Vdc
48QP
36 - 72 Vdc
Consult Factory for Special Input

The QP Series of Miniature Power DC/DC Converters operates over wide input voltage ranges (4.5-9Vdc, 9-18Vdc, 18 - 36 Vdc, and 36 - 72 Vdc) while maintaining tight output regulation and low ripple.

Safety Features of QP Modules include: Overtemperature, Input Under/Over voltage, Output Overcurrent and Short Circuit Protection.

Units in QP Series also feature Remote Shutdown, Trim capability, 3Vref, External Bias and do not use OptoCouplers in the feed-back loop.

Fixed Frequency operation enables parallel connection for higher power requirements.

QP Series units are fully encapsulated for rugged operation.

APPLICATIONS:
Commercial, industrial and Military applications, process control, distributed power, test equipment, telecommunications.

FEATURES:

  • Input Voltage Ranges: 4.5 - 9 Vdc, 9-18Vdc, 18-36Vdc., and 36 - 72 Vdc. For additional input voltages consult factory.
  • Output Voltage: 5Vdc to 500Vdc. 11 standard voltages, custom output voltages are also available.
  • Line and Load Regulation: from 0.5% Vout
  • Efficiency: Up to 90%
  • Low Ripple
  • Input Under/Over Voltage Protection
  • Output Overcurrent and Short Circuit Protection
  • Output Voltage Clamp: typ. 120% Vout
  • Thermal Shutdown
  • Trim Capability: - 5% Vout
  • 3Vref output pin
  • Remote Shutdown
  • External Bias pin for capacitor charging applications
  • 0°C to +85°C standard operating base plate temperature. Expanded operating temperature also available
  • 2500 Vrms In/Out Isolation
  • Fully Encapsulated

6QP SERIES

25W, SINGLE OUTPUT, 4.5 - 9Vin

PICO
MODEL
INPUT VOLTAGE
RANGE
(V)
OUTPUT
VOLTAGE
(V)
OUTPUT
POWER
MAX.
(W)**
EFF.
(TYP.)
@
FL
(%)
REGULATION
(MAX)
OUTPUT
VOLTAGE
RIPPLE
Pk-Pk,@FL
(mVpp)
OUTPUT
VOLTAGE
SETUP
TOL.
(%)
PRICE
(US $)
LINE
4.5-9Vin
(%)
LOAD***
10-100%
FL
(%)
6QP5.0
4.5 - 9
5
20
73
4
2
50
0.5
159.14
6QP12
4.5 - 9
12
20
82
2
1.5
40
0.5
159.14
6QP15
4.5 - 9
15
25
82
2
1.5
40
0.5
159.14
6QP24
4.5 - 9
24
25
81
1.5
1
20
0.5
159.14
6QP28
4.5 - 9
28
25
81
1.5
1
20
0.5
170.59
6QP48
4.5 - 9
48
25
80
2
1.5
30
0.5
182.04
6QP100
4.5 - 9
100
25
82
3
2
20
0.5
223.26
6QP200
4.5 - 9
200
25
77
3
2
150
0.5
280.50
6QP300*
4.5 - 9
300
20
80
2.5
2
100
0.5
337.75
6QP400*
4.5 - 9
400
20
79
2.5
2
200
0.5
372.09
6QP500*
4.5 - 9
500
20
76
2
1.5
200
0.5
400.72
* For these units, Pout max is linearly derated at 7.5W/V for input voltages lower than 5.5V
**Proper thermal management required: Base Plate Temp. <85°C (See Application Notes)
***10% minimum load required at any time

12QP SERIES

50W, SINGLE OUTPUT, 9-18Vin

PICO
MODEL
INPUT VOLTAGE
RANGE
(V)
OUTPUT
VOLTAGE
(V)
OUTPUT
POWER
MAX.
(W)**
EFF.
(TYP.)
@
FL
(%)
REGULATION
(MAX)
OUTPUT
VOLTAGE
RIPPLE
Pk-Pk,@FL
(mVpp)
OUTPUT
VOLTAGE
SETUP
TOL.
(%)
PRICE
(US $)
LINE
9-18Vin
(%)
LOAD***
10-100%
FL
(%)
12QP5.0
9-18
5
40
78
3
3
50
0.5
159.14
12QP12
9-18
12
40
85
1.5
2
40
0.5
159.14
12QP15
9-18
15
50
85
1.5
2
40
0.5
159.14
12QP24
9-18
24
50
85
1
1.5
20
0.5
159.14
12QP28
9-18
28
50
85
1
1.5
20
0.5
170.59
12QP48
9-18
48
50
85
1
1.5
30
0.5
182.04
12QP100
9-18
100
50
86
1
1.5
20
0.5
223.26
12QP200
9-18
200
50
85
1.5
2
150
0.5
280.50
12QP300*
9-18
300
40
87
1
1
100
0.5
337.75
12QP400*
9-18
400
40
87
1
1
200
0.5
372.09
12QP500*
9-18
500
40
86
1
1
200
0.5
400.72
* For these units, Pout max is linearly derated at 6.7 W/V for input voltages lower than 10.5V
**Proper thermal management required: Base Plate Temp. <85°C (See Application Notes)
***10% minimum load required at any time

24QP SERIES

50W, SINGLE OUTPUT, 18-36Vin

PICO
MODEL
INPUT VOLTAGE
RANGE
(V)
OUTPUT
VOLTAGE
(V)
OUTPUT
POWER
MAX.
(W)**
EFF.
(TYP.)
@
FL
(%)
REGULATION
(MAX)
OUTPUT
VOLTAGE
RIPPLE
Pk-Pk,@FL
(mVpp)
OUTPUT
VOLTAGE
SETUP
TOL.
(%)
PRICE
(US $)
LINE
18-36Vin
(%)
LOAD***
10-100%
FL
(%)
24QP5.0
18-36
5
40
79
3
2
50
0.5
159.14
24QP12
18-36
12
40
88
1
1.5
40
0.5
159.14
24QP15
18-36
15
50
88
1
1.5
40
0.5
159.14
24QP24
18-36
24
50
87
1
1
20
0.5
159.14
24QP28
18-36
28
50
87
1
1
20
0.5
170.59
24QP48
18-36
48
50
87
1
1
30
0.5
182.04
24QP100
18-36
100
50
88
1
1
20
0.5
223.26
24QP200
18-36
200
50
87
1
1.5
150
0.5
280.50
24QP300*
18-36
300
40
90
0.5
1
100
0.5
337.75
24QP400*
18-36
400
40
89
0.5
0.5
200
0.5
372.09
24QP500*
18-36
500
40
89
1
1
200
0.5
400.72
* For these units,**Proper thermal management required: Base Plate Temp. <85°C (See Application Notes)
***10% minimum load required at any time

48QP SERIES

50W, SINGLE OUTPUT, 36 - 72 Vin

PICO
MODEL
INPUT VOLTAGE
RANGE
(V)
OUTPUT
VOLTAGE
(V)
OUTPUT
POWER
MAX.
(W)**
EFF.
(TYP.)
@
FL
(%)
REGULATION
(MAX)
OUTPUT
VOLTAGE
RIPPLE
Pk-Pk,@FL
(mVpp)
OUTPUT
VOLTAGE
SETUP
TOL.
(%)
PRICE
(US $)
LINE
18-36Vin
(%)
LOAD***
10-100%
FL
(%)
48QP5.0
36-72
5
40
81
2
2
30
0.5
159.14
48QP12
36-72
12
50
83
1
1
20
0.5
159.14
48QP15
36-72
15
50
84
1
1
30
0.5
159.14
48QP24
36-72
24
50
88
1
1
20
0.5
159.14
48QP28
36-72
28
50
88
1
1
20
0.5
170.59
48QP48
36-72
48
50
89
1
1
30
0.5
182.04
48QP100
36-72
100
50
89
1
1
50
0.5
223.26
48QP200
36-72
200
50
89
1
1.5
250
0.5
280.50
48QP300
36-72
300
40
90
0.5
1
200
0.5
337.75
48QP400
36-72
400
40
87
0.5
1
200
0.5
372.09
48QP500
36-72
500
40
89
1
1.5
200
0.5
400.72
** Proper thermal management required, Base Plate Temp <85° C (See Application Notes)
*** 10% minimum load required at any time

ELECTRICAL CHARACTERISTICS:

  • Input OV/UV Protection
6QP Series
12QP Series
24QP Series
48QP Series
UV SHDN
3.6
7.1 V
14.6 V
31.2V
UV RESTART
4.25
7.6 V
15.6 V
31.8V
OV SHDN
11
20 V
41 V
82V
OV RESTART
10.8
19.5 V
40 V
81.5V
  • Converter Frequency: 150 kHz typical
  • Reference Voltage: 3Vdc +/-0.2V, 10mA max.
  • Current Limit Protection: Hiccup Mode
  • Output Voltage Clamp: 120% Vout typical
  • Output Trimming Range: - 5% max.
Rtrim
connected between
Rtrim (kohm) calculation
for a specified /\ Vout (%)
TRIM DOWN
TRIM (Pin #4) and VREF (Pin #3)
(425/ /\ Vout)-51

Rtrim (kohm)
/\ Vout (%)
1
2
3
5
TRIM DN
374
162
91
33
FIG. 2 Trim Down typical resistor values

For Trim Up: Consult Factory 800-431-1064

  • Remote Shutdown: Converter is turned off when Pin # 2 (SHDN) is clamped to Pin # 1 within less than 0.4 V

FIG. 3 Non Isolated Shutdown

Fig. 4 Isolated Shutdown

  • External Bias Function
    Ex.B Voltage = 17...20Vdc; Ex.B Current = 20mA (typical)

External Bias should be used in Capacitor Charging applications. The QP unit will not start-up under a short-cuicuit condition because the Internal Bias Supply cannot develop the required start-up voltage. To charge up a large capacitor, an external bias voltage should be used only until the output voltage, Vout, reached 90 - 95% of its nominal value and therefore the internal bias voltage has come up and is able to sustain converter operation.

Note that during External Bias operation, output overload and short circuit protection are disabled and for this reason it is highly recommended - as shown in diagram - to disable the External Bias supply after Vout reaches its nominal value and allow from that moment on for the internal bias voltage operation. While on internal bias operation, overload and short circuit protections are restored.

For additional information, see Application Notes.

  • Base Plate Over Temperature Shutdown: 95+/-5°C, non-latching
  • Isolation Characteristics:
INPUT TO OUTPUT
4242 VDC
INPUT TO BASE PLATE
2121 VDC
OUTPUT TO BASE PLATE
1000 VDC
  • Operating Termperature Range (Base Plate): -0°C to + 85 °C
  • Storage Temperature Range: -55°C to + 125°C

PHYSICAL CHARACTERISTICS:

  • Size (WxDxH): 2.5" x 1.55" x 0.5"
  • Weight: 75 grams
  • Fully Encapsulated

NOTES:

  • All specifications are given under following conditions: +25°C ambient, 6Vdc (6QP Series), 12Vdc (12QP Series), 24Vdc (24QP Series), and 48V (48QP Series) Input at Full Load
  • For correct operation, a 10% maximum load should be maintained at all times
  • For expanded temperature range or non-standard features, please consult factory.

Typical weight: 75 Grams
Dimensions are in inches

NOTE: The recommended torque for mounting screws is be 3 to 5 In-Lbs

PIN
FUNCTION
#1
-IN
#2
SHDN
#3
VREF
#4
TRIM
#5
EX. B
#6
+IN
#7
+OUT
#8
-OUT

PIN DESCRIPTION

Pin # 1 (-IN): Negative Input Voltage to the unit, 9-18V (12QP Series), 18-36V (24 QP Series), or 36-72V (48QP Series). Units are Input UV/OV protected, nonlatched shut-down.

Pin # 2 (SHDN): When pulled below 0.4Vdc will cause the unit to shut down, non-latching.

Pin # 3 (VREF): 3Vref generated on board. Range 2.8Vdc to 3.2Vdc Current sourcing capability: 10mA max.

Pin # 4 (TRIM): Connecting it through a resistor to VREF will reduce V OUT. Adjusting range is max. - 5% V OUT.

Pin # 5 (EX.B): This pin is a direct path to the controller IC's Vcc and should not exceed 20Vdc otherwise the IC will be damanged. External Bias (Ex.B) will enable applications where the unit has to start up under an overload or short-circuit condition (like capacitor charging applications). Overload conditions will prevent internal bias supply to develop the start-up voltage due to the hiccup protection mode and unit will not start. Required voltage for Ex.B start up: 17 to 20Vdc. Caution: when operated with Ex.B, the unit loses overload and short circuit protection. Do not connect if Pin # 5 is not used.

Pin # 6 (+IN): Positive Input Voltage to the unit.

Pin # 7 (+OUT): Positive Output Voltage. A minimum 10% load across the output is required in order to provide regulation. Output is clamped with Zener diodes at a 120% V OUT (typical) to limit overshoot in case of no load operation.

Pin # 8 (-OUT): Negative Output Voltage

QCH Heatsink, Thermal Interface

THERMAL RESISTANCE CASE TO AIR (°C/W)
BASE PLATE (NO HS)
QCH HEAT SINK
FREE AIR
9.6
5.6
200LFM
5.1
3.0
400LFM
3.7
2.2
600LFM
3.1
1.8
800LFM
2.6
1.5
1000LFM
2.2
1.3

TYPE QCH
$10.00
TYPE QTI
$3.00
NOTE: For additional Heatsink options consult factory.

PART TI = THERMAL INTERFACE
Alloy Aluminum Substrate
Thermal Conductivity (BTU-in/hr sq.ft. ° F): 1530
Coefficient of Thermal Expansion (25-100°C, 10 {to the -6th} in-in/°F): 13.1
Hardness, Brinnell B: 23
Endurance Limit, psi: 5000
Standard Thickness (inches): .002


For immediate engineering assistance or to place an order:
Call Toll Free: 800-431-1064

PICO Electronics, Inc.

143 Sparks Ave. Pelham, NY 10803-1810
Tel: 914-738-1400 or Fax: 914-738-8225