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Pico Electronics: QP SERIES

HiQP SERIES

Miniature DC/DC Converters

Wide Input Range: 125 to 475 Vdc

50 Watt, Isolated, Regulated Output

High Efficiency, Low Ripple

Low Profile (2.5" x 1.55" x 0.5") - PCB Mountable

High Reliability DC-DC Converters

 

PRODUCT SELECTION
  Operating Temperature (Base Plate)
HiQP Standard 0°C to +70°C
HiQP-I Industrial -40°C to +95°C
HiQP-M Military -55°C to +95°C

 

The HiQP Series of high input voltage DC-DC Modules feature superior functionality and characteristics that make them suitable for high end applications.

Units in the HiQP Series provide wide input voltage range (125 to 475 Vdc) while maintaining tight output regulation along with low ripple and noise.

HiQP Series has a full range of designed-in protections: Overtemperature, Input Overvoltage, Output Overvoltage, and Output Current Limit.

HiQP Modules also feature: Remote Shutdown, Trim capability, Onboard Reference Voltage, and, for increased reliability, do not use OptoCouplers in the feed-back look.

Load Share function provides a simple way for parallel operation, allowing for increased power with "N+1" redundancy.

All modules in HiQP Series are fitted with Input LC Filters to reduce reflected current ripple. Additionally, the Soft -Start function eliminates input inrush current and output voltage overshoot during start-up.

HiQP Series units are fully encapsulated for ruggedized operation.

 

 

 

PHYSICAL CHARACTERISTICS:

Case Dimensions: LxWxH is 2.5" x 1.55" x 0.5"
Weight: 75 Grams typical
Epoxy Encapsulation

FEATURES:

  • Wide Input Voltage Range: 125Vdc to 475Vdc
  • Output Voltage: 24Vdc to 200Vdc. 5 standard voltages. Custom output voltages are also available.
  • Line and Load Regulation: from 1% Vout
  • Efficiency: Up to 90%
  • Low Ripple
  • Input Over Voltage Protection
  • Input LC Filter
  • Output Current Limit
  • Output Overcurrent Protection: Typical 120% Vout
  • Thermal Shutdown
  • Trim Capability: +/-15% Vout
  • 3V Onboard Reference
  • Remote Shutdown
  • Load Share Pin for parallel operation
  • 4242Vdc In/Out Isloation
  • Fully Encapsulated
  • 0°C to +70°C Standard Operating Temperature.
    • Expanded Operating Temperature Ranges:
      • -40°C to +95°C for HiQP-I
      • -55°C to +95°C for HiQP-M
    • All all temperatures measured at Base Plate
  • Units compliant by design with Mil Std 202:
    • Vibration - Method204, Condition D
    • Shock - Method 213, Condition I
    • Humidity - Method 106
    • Altitude - Method 105, Condition D
  • Optional Environmental Screening (selected Mil Std 883) available:
    • Stabilization Bake - Method 1008
    • Temperature Cycle - Method 1010, Condition B
    • Hi Temperature Full Power Burn In - Method 2015 used as a guide

Call 800-431-1064 to speak with an engineer for any additional requirements.

 

HiQP Series

Wide InputRange: 125 to 475 VDC

Operating Temperature 0 to +85°C Case

Standard Models

Pico
Part
Number
Input
Voltage
Range
(V)
*
Output
Voltage
(V)
Output
Power
Maximum
(W)
Efficiency
at Full
Load
Typical
(%)
Regulation (Maximum) Output
Voltage
Ripple
Peak to Peak
at Full Load
(mVpp)
Output
Voltage
Setup
Tolerance
(%)
Price
1 -49
(US $)
Line
125-475
Vin
(%)
Load
10-100%
Full Load
(%)
***
HiQP24

125-475

24 50 86

0.25

1.25 350 1 183.01
HiQP28 125-475 28 50 86 0.25 1.25 375 1 196.15
HiQP48 125-475 48 50 85 0.25 1.75 400 1 209.35
HiQP100 125-475 100 50 88 0.3 1.6 600 1 260.16
HiQP200 125-475 200 50 89 0.1 1.5 750 1 322.57
*Nominal Input Voltage: 250 Vdc
**Proper thermal management to prevent exceeding Max. Base Plate Temperature is required (See application notes)
***2.5W minimum load required in order to prevent output to overshoot more than 2% Vout, nominal.

 

HiQP-I Series

Wide InputRange: 125 to 475 VDC

Operating Temperature -25°C to +85°C Case

Industrial Models

Pico
Part
Number
Input
Voltage
Range
(V)
*
Output
Voltage
(V)
Output
Power
Maximum
(W)
Efficiency
at Full
Load
Typical
(%)
Regulation (Maximum) Output
Voltage
Ripple
Peak to Peak
at Full Load
(mVpp)
Output
Voltage
Setup
Tolerance
(%)
Price
1 -49
(US $)
Line
125-475
Vin
(%)
Load
10-100%
Full Load
(%)
***
HiQP24-I 125-475 24 50 86 0.25 1.25 350 1 224.52
HiQP28-I 125-475 28 50 86 0.25 1.25 375 1 294.27
HiQP-48I 125-475 48 50 85 0.25 1.75 400 1 314.03
HiQP100-I 125-475 100 50 88 0.3 1.6 600 1 390.24
HiQP200-I 125-475 200 50 89 0.1 1.5 750 1 483.86
*Nominal Input Voltage: 250 Vdc
**Proper thermal management to prevent exceeding Max. Base Plate Temperature is required (See application notes)
***2.5W minimum load required in order to prevent output to overshoot more than 2% Vout, nominal.

 

HiQP-M Series

Wide InputRange: 125 to 475 VDC

Operating Temperature -55°C to +85°C Case

Military Models

Pico
Part
Number
Input
Voltage
Range
(V)
*
Output
Voltage
(V)
Output
Power
Maximum
(W)
Efficiency
at Full
Load
Typical
(%)
Regulation (Maximum) Output
Voltage
Ripple
Peak to Peak
at Full Load
(mVpp)
Output
Voltage
Setup
Tolerance
(%)
Price
1 -49
(US $)
Line
125-475
Vin
(%)
Load
10-100%
Full Load
(%)
***
HiQP24-M 125-475 24 50 86 0.25 1.25 350 1 362.36
HiQP28-M 125-475 28 50 86 0.25 1.25 375 1 388.44
HiQP48-M 125-475 48 50 85 0.25 1.75 400 1 414.51
HiQP100-M 125-475 100 50 88 0.3 1.6 600 1 515.12
HiQP200-M 125-475 200 50 89 0.1 1.5 750 1 638.69
*Nominal Input Voltage: 250 Vdc
**Proper thermal management to prevent exceeding Max. Base Plate Temperature is required (See application notes)
***2.5W minimum load required in order to prevent output to overshoot more than 2% Vout, nominal.

 

INPUT CHARACTERISTICS
Parameter Conditions Value Observations
Nominal Input Voltage   250Vdc  
Input Voltage Range Min...Max 125...475Vdc  
Minimum Input Voltage Max 125Vdc For Start-up
Input Current in Short Circuit Output Shorted, Max 8mA  
Input Current in Shut-Down ShDn Enabled, Max 0.5mA  
Input reflected Ripple Current Full Load, 20MHz 10% of Iin, Typical

 

OUTPUT CHARACTERISTICS
Parameter Conditions Value Observations
Output Set Voltage Vin, nominal and full load 1% of Vout, nominal
Output Voltage Trim, min Min...Max -10...+10 of Vout, nominal

 

OTHER CHARACTERISTICS
Parameter Conditions Value Observations
Switching Frequency Vin min to Vin Max and Full Load 80kHz to 110kHz Variable with Line and Load
Reference Voltage 10mA Max Current 3V +/- 2% Pin # 3
Minimum Load Vin min to Vin Max 2.5 W For /\ Vout <2% of Vout nominal

 

PROTECTION FUNCTIONS
Parameter Conditions Value Observations
Input Over Voltage Shut-Down 525Vdc Typical
Restart 500Vdc Typical
Intput Under Voltage Shut-Down 60Vdc Typical
Restart 207Vdc Typical
Output Over-Voltage   120% of Vout, Nominal, Typical
Output Current Limit (Ilim) Output Overload/Short 120% of Iout, Max., Typical
Output Voltage in Current Limit Before Foldback 50% of Vout, Nominal, Typical
Over Temperature (HiQP) Shut-Down 95°C Typical, Base Plate
Restart 90°C Typical, Base Plate
Over Temperature (HiQP-I, -M) Shut-Down 110°C Typical, Base Plate
Restart 105°C Typical, Base Plate

 

 

TRIM UP/TRIM DOWN FUNCTION
  Rtrim Connected Between Rtrim (kohm) vs. /\ Vout (typical)
1000 470 100 47 10 1 Short
TRIM UP Pin # 4 and Pin # 1 +0.5% +1% +4% 7% 14% +16% +17%
TRIM DOWN Pin # 4 and Pin # 3 -1% -3% -7% -9% -13% -15% -16%

 

 

REMOTE SHUT-DOWN FUNCTION

Remote Shutdown is enabled when Pin # 2 (SHDN) is pulled LOW (to Pin # 1) within less than 0.4V. Shut-Down Pini released of floating will allow for converter operation. The Shut-Down function can be used in applications requiring On/Off control. This may be done in different was: Non-isolated control could be implemented by using a bipolar transistor, Mosfet, or a switch. Isolated operation would require a relay or an opto-coupler.

LOAD SHARE FUNCTION

Modules in HiQP Series have a designed-in circuit allowing for parallel operation of multiple converters. This function is enabled by connecting LDSH pins (Pin #5) of units to operate in parallel. The connection ensures active sharing of the load by paralleled converters. Beside increase power, Load Share function allows for true "N+1" redundancy.

ISOLATION CHARACTERISTICS
Parameter Conditions Value Observations
Isolation Test Voltage Input to Output 4242Vdc Min
Intput to Baseplate 2121Vdc Min
Output to Baseplate 1000Vdc Min
Isolation Resistance   100Mohm Min

 

THERMAL CHARACTERISTICS
Parameter Conditions Value Observations
Baseplate Operating Temperature HiQP 0°C Min
HiQP-I -40°C Min
HiQP-M -55°C Min
HiQP 70°C Max
HiQP-I 95°C Max
HiQP-M 95°C Max
Storage Temperature Min -55°C Non-Operating
Max +125°C
Thermal Impedance Baseplate to Ambient
Rth (b-a) Free Air
10°C/W Typical

 

PIN FUNCTION
1 -IN
2 SHDN
3 VREF
4 TRIM
5 LDSH
6 +IN
7 +OUT
8 -OUT

Typical Weight: 75 Grams
Dimensions are in inches

PIN DESCRIPTION:

Pin # 1 (-IN): Negative Input Voltage to the unit - 125-475Vdc. Units are Input OV protected, non-latched shut-down.
Pin # 2 (SHDN): When pulled below 0.4Vdc will cause the unit to shut down, non-latching. Leave unconnected if not used.
Pin # 3 (VREF): 3 Vref generated on board. Reference voltage tolerance: +/- 2%. Current sourcing capability: 10mA max.
Pin # 4 (TRIM): Connecting this pin through a resistor to -IN will increase Vout. Connecting it through a resistor to VREF will reduce Vout. Minimum adjusting range is: +/-10% of Vout nominal.
Pin # 5 (LDSH): By connecting together this pin on multiple paralleled modules, sourcing current in same load, it is ensured that output currents will be equally balanced. Useful for increased power and "N+1" redundant power systems.
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. The output is clamped with Zener diodes at a 120% Vout (typical) to limit overshoot in case of no-load operation.
Pin # 8 (-OUT): Negative Output voltage.

 

QCH/QCV HEATSINKS and THERMAL INTERFACE
Thermal and Mechanical Specifications

  Thermal Resistance: Case to Air [°C/W]
Baseplate (No Heatsink) QCH Heatsink
Free Air 10 5.6
200 LFM 5.1 3
400 LFM 3.7 2.2
600 LFM 3.1 1.8
800 LFM 2.6 1.5
1000 LFM 2.2 1.3

                                                 

 

 

PART TI = Thermal Interface

Alloy Aluminum Substrate
Termal 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, pse: 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