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ISOLATED DC/DC CONVERTERS
48V Input 12V/12A, 3.3V/45A, 5V/30A, 1.2V-2.5V/50A Outputs
07QB-C5T Series
* * * * * * * Isolated High Efficiency High Power Density Low Cost
PRELIMINARY
* * * * * * Output Over Voltage Shutdown OCP/SCP Over Temperature Protection Remote On/Off Output Voltage Trim Positive/Negative Remote Sense
Input Under Voltage Lockout Fixed Frequency (330KHz) Active Low/High (Option)
Description
The 07QB-C5T Series are isolated DC/DC converters that operate from a nominal 48V source. These units will provide up to 150W of output power from a nominal 48V input. These units are designed to be highly efficient and low cost. Typical efficiency of 12V output at 48V input at full load is 93%. Features include remote on/off, over current protection and under-voltage lockout. These converters are provided in an industry standard quarter brick package.
Part Selection
Output Voltage 12V 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V Input Voltage 48V 48V 48V 48V 48V 48V 48V Max. Output Current 12A 30A 45A 50A 50A 50A 50A Max. Output Power 144W 150W 150W 125W 120W 75W 60W Typical Efficiency 93% 91% 91% 89% 87% 85% 83% Model Number Active High 07QB-C5T120 07QB-C5T050 07QB-C5T033 07QB-C5T025 07QB-C5TV80 07QB-C5TV50 07QB-C5TV20 Model Number Active Low 07QB-C5T12L 07QB-C5T05L 07QB-C5T03L 07QB-C5T02L 07QB-C5TV8L 07QB-C5TV5L 07QB-C5TV2L
Note: Add "G" suffix at the end of the model number to indicate Tray Packaging.
Absolute Maximum Ratings
Parameter Input Voltage (continuous) Remote On/Off I/O Isolation Voltage Ambient Temperature Storage Temperature Min -0.3V -0.3V -40C -55C Typ Max 80V 18V 2000V 85C 125C Notes
Note: All specifications are typical at nominal input, full load at 25C unless noted.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com
ISOLATED DC/DC CONVERTERS
48V Input 12V/12A, 3.3V/45A, 5V/30A, 1.2V-2.5V/50A Outputs
Input Specifications
Parameter Input Voltage Input Current (full load) VO=12V VO=5.0V VO=3.3V VO=2.5V VO=1.8V VO=1.5V VO=1.2V Input Current (no load) Remote Off Input Current Input Reflected Ripple Current (pk-pk) Input Reflected Ripple Current (RMS) I t Inrush Current Transient Turn-on Voltage Threshold Turn-off Voltage Threshold
2
Min 36V -
Typ 48V 120mA 10mA
Max 75V 4.5A 4.9A 4.9A 4.1A 3.0A 2.6A 2.1A 180mA 15mA 20mA 8mA 0.1A s 35V 34V
2
Notes
32V 30V
10mA 3mA 0.05A s 34V 32V
2
Tested with simulated source impedance of 10uH, 5Hz to 20MHz; use a 100uF/100V electrolytic capacitor with ESR = 1 ohm max. at 200KHz at 25C.
Output Specifications
Parameter Output Voltage Set Point VO=12V VO=5.0V VO=3.3V VO=2.5V VO=1.8V VO=1.5V VO=1.2V Line Regulation VO=12V VO=5.0V VO=3.3V VO=1.2V-2.5V Load Regulation VO=12V VO=5.0V VO=3.3V VO=2.5V VO=1.8V VO=1.5V VO=1.2V Regulation Over Temperature (-40C to +85C) VO=12V VO=5.0V VO=3.3V VO=2.5V VO=1.8V VO=1.5V VO=1.2V Min 11.820V 4.925V 3.250V 2.463V 1.773V 1.477V 1.182V Typ 12V 5V 3.3V 2.5V 1.8V 1.5V 1.2V 12mV 5mV 3mV 3mV 30mV 10mV 7mV 6mV 5mV 4mV 3mV 60mV 45mV 30mV 25mV 20mV 20mV 15mV Max 12.180V 5.075V 3.350V 2.538V 1.827V 1.523V 1.218V 24mV 10mV 7mV 6mV 60mV 20mV 15mV 13mV 9mV 8mV 6mV 100mV 75mV 50mV 45mV 40mV 35mV 30mV Notes
Vin=48V, Io=50% full load
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com
ISOLATED DC/DC CONVERTERS
48V Input 12V/12A, 3.3V/45A, 5V/30A, 1.2V-2.5V/50A Outputs
Output Specifications (continued)
Parameter Output Current VO=12V VO=5.0V VO=3.3V VO=1.2V-2.5V Current Limit Threshold VO=12V VO=5.0V VO=3.3V VO=1.2V-2.5V Short Circuit Surge Transient Ripple and Noise (RMS) VO=12V VO=5.0V VO=3.3V VO=1.2V-2.5V Ripple and Noise (pk-pk) VO=12V VO=5.0V VO=3.3V VO=1.2V-2.5V Turn on Time Overshoot at Turn on Output Capacitance VO=12.0V VO=5.0V VO=1.2V-3.3V Transient Response 50% ~ 75% Max Load 75% ~ 50% Max Load 50% ~ 75% Max Load 75% ~ 50% Max Load 50% ~ 75% Max Load 75% ~ 50% Max Load Overshoot Settling Time Overshoot Settling Time Overshoot Settling Time Overshoot Settling Time Overshoot Settling Time Overshoot Settling Time VO=1.2V-3.3V VO=5.0V VO=12.0V 600mV 200uS 600mV 200uS 150mV 200uS 150mV 200uS 100mV 200uS 100mV 200uS 800mV 300uS 800mV 300uS 300mV 300uS 300mV 300uS 200mV 300uS 200mV 300uS Test conditions: di/dt = 0.1A/uS, Vin=48V, with a 1uF ceramic capacitor and a 10uF Tantalum capacitor at the output. 0uF 0uF 0uF 2200uF 10000uF 20000uF 20mS 100mV 100mV 55mV 40mV 0% 150mV 150mV 100mV 80mV 100mS 5% 30mV 25mV 20mV 15mV 50mV 50mV 40mV 30mV Test conditions: 0-20MHz BW, with a 1uF ceramic capacitor and a 10uF Tantalum capacitor at the output. 14A 36A 55A 58A 15.5A 43A 62A 63A 3A s
2
Min 0A 0A 0A 0A
Typ -
Max 12A 30A 45A 50A 18A 50A 70A 70A 5A s
2
Notes
Note: All specifications are typical at nominal input, full load at 25C unless noted.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com
ISOLATED DC/DC CONVERTERS
48V Input 12V/12A, 3.3V/45A, 5V/30A, 1.2V-2.5V/50A Outputs
General Specifications
Parameter Efficiency VO=12V VO=5.0V VO=3.3V VO=2.5V VO=1.8V VO=1.5V VO=1.2V Switching Frequency Isolation capacitance Output Voltage Trim Range Over Temperature Protection Over Voltage Protection MTBF Dimensions Inches millimeters Weight 2.30 x 1.45 x 0.395 58.42 x 36.83 x 10.03 41g 90% 88% 88% 86% 84% 82% 80% 280KHz 80%Vo 115%Vo 93% 91% 91% 89% 87% 85% 83% 330KHz 1500pF 125C 122%Vo TBD 380KHz 110%Vo 127%Vo Calculated Per Bell Core TR-332 (IO = Nominal; Ta = 25C) Min Typ Max Notes
Vin=48V, full load , Ta=25C
Control Specifications
Parameter Remote On/Off Signal Low (Unit On) Signal High (Unit Off) Signal Low (Unit Off) Signal High (Unit On) Current Sink Active High Active Low -0.3V 2.4V -0.3V 2.4V 0mA 0.8V 18V 0.8V 18V 0.75mA 07QB-C5TxxL. The remote on/off pin open, Unit off. 07QB-C5Txx0. The remote on/off pin open, Unit on. Min Typ Max Notes
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com
ISOLATED DC/DC CONVERTERS
48V Input 12V/12A, 3.3V/45A, 5V/30A, 1.2V-2.5V/50A Outputs
Output Trim Equations
Equations for calculating the trim resistor are shown below (Unit: k). The Trim Down resistor should be connected between the Trim pin and Ground pin. The Trim Up resistor should be connected between the Trim pin and the Vout. Only one of the resistors should be used for any given application.
1) For Vo=1.5V - 12V:
Vout
511 Rtrimdown = - 10.22 delta
Module
Trim GND Rtrimdown
Rtrimup =
(100 + delta ) Vo 5.11 - 626 - 10.22 1.225 delta
Module
Vout Trim GND Rtrimup
Notes:
delta =
(Vo _ req - Vo) x 100[%]
Vo
Vo_req=Desired (trimmed) output voltage [V]; Vo=output voltage Vo=12.006V for 12V output; Vo=5V for 5.0V output;; Vo=3.308V for 3.3V output; Vo=2.505V for 2.5V output; Vo=1.804V for 1.8V output; Vo=1.503V for 1.5V output
2) For Vo=1.2V:
Rtrimdown = 511 - 10.22 delta Rtrimup = (100 + delta ) Vo 5.11 - 313 - 10.22 0.6125 delta
Notes:
delta =
(Vo _ req - Vo) x100[%]
Vo
Vo_req=Desired (trimmed) output voltage [V]; Vo=output voltage Vo=1.202V for 1.2V output
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com
ISOLATED DC/DC CONVERTERS
48V Input 12V/12A, 3.3V/45A, 5V/30A, 1.2V-2.5V/50A Outputs
Efficiency Data
95% EFFICIENCY 90% 85% 80% 75% 70% 5 11 23 34 45 OUTPUT CURRENT (A)
36V 48V 75V
07QB-C5T03x
95% EFFICIENCY 90% 85% 80% 75% 70% 1 3 6 9 12 OUTPUT CURRENT (A)
36V 48V 75V
07QB-C5T12x
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com
ISOLATED DC/DC CONVERTERS
48V Input 12V/12A, 3.3V/45A, 5V/30A, 1.2V-2.5V/50A Outputs
Thermal Derating Curves
07QB-C5T03x
07QB-C5T12x
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com
ISOLATED DC/DC CONVERTERS
48V Input 12V/12A, 3.3V/45A, 5V/30A, 1.2V-2.5V/50A Outputs
Pin Connections
Pin 1 2 3 4 5 6 7 8 Function Vin (+) Remote On/Off Vin (-) Vout (-) Remote Sense (-) Trim Remote Sense (+) Vout (+) Pin Size 0.04" 0.04" 0.04" 0.062" 0.04" 0.04" 0.04" 0.062"
2005 Bel Fuse Inc. Specifications subject to change without notice. 030405
CORPORATE Bel Fuse Inc. 206 Van Vorst Street Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
FAR EAST Bel Fuse Ltd. 8F/ 8 Luk Hop Street San Po Kong Kowloon, Hong Kong Tel 852-2328-5515 Fax 852-2352-3706 www.belfuse.com
EUROPE Bel Fuse Europe Ltd. Preston Technology Management Centre Marsh Lane, Suite G7, Preston Lancashire, PR1 8UD, U.K. Tel 44-1772-556601 Fax 44-1772-888366 www.belfuse.com

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