NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 14 Vdc Input 0.75 Vdc - 3.63 Vdc/16 A Output
SRBC-16E1Ax
RoHS Compliant
Rev.A
Non-Isolated High Efficiency Fixed Frequency Low Cost Over Temperature Shutdown Logic Low/High (option) Industrial Temperature Range
Under-voltage Lockout (UVLO) OCP/SCP Wide Trim Wide Input Remote Sense Remote On/Off
Description
The Bel SRBC-16E1Ax is part of the non-isolated dc/dc converter series. The modules use a SMT package. These converters are available in a range of output voltages from 0.75 Vdc to 3.63 Vdc over a wide range of input voltage (Vin = 4.5 Vdc - 14 Vdc). The efficiency is typically 92% at 3.3 Vdc output at full load.
Part Selection
Output Voltage 0.75 V - 3.63 V Input Voltage 4.5 V -14 V Max. Output Current 16 A Max. Output Power 58 W Typical Efficiency 92% Model Number Active Low SRBC-16E1AL Model Number Active High SRBC-16E1A0
Notes: 1. Add “G” suffix at the end of the model number to indicate Tray Packaging. 2. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers.
Absolute Maximum Ratings
Parameter Input Voltage (continuous) Output Enable Terminal Voltage Ambient Temperature Storage Temperature Min -0.3 V -0.3 V -40 °C -55 °C Typ Max 15 V 15 V 85 °C 125 °C Notes
Note: All specifications are typical at 25 °C unless otherwise stated.
Input Specifications
Parameter Input Voltage Vo,set < 3.0 Vo,set ≥ 3.0 Input Current (full load) 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 4.5 V Vo,set+1.5 V -
Typ 100 mA 2 mA -
Max 14 V 14 V 15 A 400 mA
Notes
This power module is not internally fused. An input line fuse must always be used
3.7 V
0.2 A s 4.2 V 2
150 mA 0.4 A s 4.2 V
2
Tested with one 1000 uF/25 V AL input capacitor with ESR=0.03 ohm max and 6 × 47 uF/16 V Tantalum capacitors with ESR=0.013 ohm max at 100 kHz, & simulated source impedance of 1000 nH, 5 Hz to 20 MHz.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 14 Vdc Input 0.75 Vdc - 3.63 Vdc/16 A Output
Output Specifications
Parameter Output Voltage Set Point Load Regulation Line Regulation Regulation Over Temperature (-40 °C to +85 °C) Output Current Current Limit Threshold Short Circuit Surge Transient Ripple and Noise (pk-pk) Ripple and Noise (rms) Turn on Time Overshoot at Turn on Output Capacitance Transient Response 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load Settling Time Min -2% Vo,set 0A 0 uF Typ 0.1% Vo,set 0.1% Vo,set 0.3% Vo,set 180% Io,out 1A s 30 mV 12 mV 12 mS 150 mV 50 uS 150 mV 50 uS
2
Max 2% Vo,set 16 A 3A s 75 mV 30 mV 20 mS 1% Vo,set 5000 uF 2
Notes Vin=12 V, full load
Tested with 0-20 MHz BW, 10 uF tantalum capacitor & 1uF ceramic capacitor at the output
All
di/dt=2.5 A/uS; Vin=12 V and with 2 x 150 uF polymer capacitor at the output.
Note: All specifications are typical at nominal input, full load at 25 °C unless otherwise stated.
General Specifications
Parameter Efficiency Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.5 V Vo=1.2 V Vo=0.75 V Efficiency Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.5 V Vo=1.2 V Vo=0.75 V Switching Frequency Over Temperature Shutdown Output Trim Range (Wide Trim) Remote Sense Compensation MTBF Dimensions Inches (L × W × H) Millimeters (L × W × H) Weight 1.3 x 0.53 x 0.315 33.02 x 13.46 x 8.00 8g Min 200 kHz 0.7525 V Typ 92% 90% 88% 87% 85% 79% 92% 90% 87% 86% 83% 78% 230 kHz 130 °C 2,666,488 hours Max 260 kHz 3.63 V 0.5 V Calculated Per Bell Core SR-332 (IO = 80%Io,max; Vin=12 V; Vo=3.3 V; Ta=25°C) Notes
Measured at Vin=12 V, lo=lo-max
Measured at Vin=5 V, lo=lo-max
Note: All specifications are typical at 25 °C unless otherwise stated.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 14 Vdc Input 0.75 Vdc - 3.63 Vdc/16 A Output
Control Specifications
Parameter Remote On/Off Signal Low (Unit Off) Signal High (Unit On) Signal Low (Unit On) Signal High (Unit Off) Min -0.2 V -0.2 V 2.5 V Typ Max 0.3 V Vin, max 0.3 V Vin, max Notes
SRBC-16E1A0; Remote On/Off pin open, Unit on. SRBC-16E1AL; Remote On/Off pin open, Unit on.
Output Trim Equations
Equation for calculating the trim resistor (in Ω) given the desired output voltage (Vo) is shown below. The Trim Up resistor should be connected between the Trim pin and Ground.
Vout
Rtrim =
10500 − 1000 Vo − 0.7525
Sense
Module
trim
Rtrim
GND
Equation for calculating the trim voltage (in V) given the desired output voltage (Vo) is shown below. The Trim Up voltage should be connected between the Trim pin and Ground.
Vout
Vtrim = 0.7 − 0.0667 × (Vo − 0.7525)
Sense
Module
trim
Vtrim
GND
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 14 Vdc Input 0.75 Vdc - 3.63 Vdc/16 A Output
Efficiency Data
MODULE 3.3 V 100% E F F IC IE N C Y
MODULE 2.5 V 100% 90% 80% 70% 60% 1.6 4.0 8.0 12.0 16.0 5.0 V 12.0 V
90% 80% 70% 1.6 4.0 8.0 12.0 16.0 OUTPUT CURRENT
5.0 V 12.0 V
E F F IC IE N C Y
OUTPUT CURRENT
MODULE 1.8 V 100% 90% 80% 70% 60% 1.6 4.0 8.0 12.0 16.0 OUTPUT CURRENT 5.0 V 12.0 V
100% 90% 80% 70% 60% 1.6
MODULE 1.5 V
E F F IC IE N C Y
E FFIC IE N C Y
5.0 V 12.0 V
4.0
8.0
12.0
16.0
OUTPUT CURRENT
MODULE 1.2 V 100% 90% 80% 70% 60% 50% 1.6 4.0 8.0 12.0 16.0 OUTPUT CURRENT
100% 90% 80% 70% 60% 50% 1.6 4.0
MODULE 0.75 V
E F F IC IE N C Y
5.0 V 12.0 V
E F F IC IE N C Y
5.0 V 12.0 V
8.0
12.0
16.0
OUTPUT CURRENT
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 14 Vdc Input 0.75 Vdc - 3.63 Vdc/16 A Output
Thermal Derating Curves
Vo=0.75 V; Vin=5.0 V
Vo=0.75 V; Vin=12.0 V
Vo=1.8 V; Vin=5.0 V
Vo=1.8 V; Vin=12 V
Vo=3.3 V; Vin=5.0 V
Vo=3.3 V; Vin=12 V
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 14 Vdc Input 0.75 Vdc - 3.63 Vdc/16 A Output
Ripple and Noise Waveforms
Vin=5 V, Vo=0.7525 V
Vin=12 V, Vo=0.7525 V
Vin=5 V, Vo=1.2 V
Vin=12 V, Vo=1.2 V
Vin=5 V, Vo=1.5 V
Vin=12 V, Vo=1.5 V
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 14 Vdc Input 0.75 Vdc - 3.63 Vdc/16 A Output
Ripple and Noise Waveforms (continued)
Vin=5 V, Vo=1.8 V
Vin=12 V, Vo=1.8 V
Vin=5 V, Vo=2.5 V
Vin=12 V, Vo=2.5 V
Vin=5 V, Vo=3.3 V
Vin=12 V, Vo=3.3 V
Note: Ripple and noise at full load, with 10uF tantalum capacitor and 1uF ceramic at the output, and Ta=25℃.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 14 Vdc Input 0.75 Vdc - 3.63 Vdc/16 A Output
Transient Response Waveforms
50% to 100% load Transient at Vin=5 V, Vo=0.75 V
100% to 50% load Transient at Vin=5 V, Vo=0.75 V
50% to 100% load Transient at Vin=5 V, Vo=1.2 V
100% to 50% load Transient at Vin=5 V, Vo=1.2 V
50% to 100% load Transient at Vin=5 V, Vo=1.5 V
100% to 50% load Transient at Vin=5 V, Vo=1.5 V
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 14 Vdc Input 0.75 Vdc - 3.63 Vdc/16 A Output
Transient Response Waveforms (continued)
50% to 100% load Transient at Vin=5 V, Vo=1.8 V
100% to 50% load Transient at Vin=5 V, Vo=1.8 V
50% to 100% load Transient at Vin=5 V, Vo=2.5 V
100% to 50% load Transient at Vin=5 V, Vo=2.5 V
50% to 100% load Transient at Vin=5 V, Vo=3.3 V
100% to 50% load Transient at Vin=5 V, Vo=3.3 V
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 14 Vdc Input 0.75 Vdc - 3.63 Vdc/16 A Output
Transient Response Waveforms (continued)
50% to 100% load Transient at Vin=12 V, Vo=0.75 V
100% to 50% load Transient at Vin=12 V, Vo=0.75 V
50% to 100% load Transient at Vin=12 V, Vo=1.2 V
100% to 50% load Transient at Vin=12 V, Vo=1.2 V
50% to 100% load Transient at Vin=12 V, Vo=1.5 V
100% to 50% load Transient at Vin=12 V, Vo=1.5 V
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 14 Vdc Input 0.75 Vdc - 3.63 Vdc/16 A Output
Transient Response Waveforms (continued)
50% to 100% load Transient at Vin=12 V, Vo=1.8 V
100% to 50% load Transient at Vin=12 V, Vo=1.8 V
50% to 100% load Transient at Vin=12 V, Vo=2.5 V
100% to 50% load Transient at Vin=12 V, Vo=2.5 V
50% to 100% load Transient at Vin=12 V, Vo=3.3 V
100% to 50% load Transient at Vin=12 V, Vo=3.3 V
Note: Transient response with external load capacitance Cext=2x150uF (Polymer capacitors), and Ta=25℃.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 14 Vdc Input 0.75 Vdc - 3.63 Vdc/16 A Output
Mechanical Outline
Pin Connections
Pin 1 2 3 4 5 6 7 Function On/Off Vin N/A Ground Vout Trim Sense
PAD SIZE: MIN: 0.14"* 0.095" (3.56mm * 2.41mm) MAX: 0.165"* 0.11" (4.19mm * 2.79mm)
RoHS Compliance
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and other hazardous substances from electronic products.
©2007 Bel Fuse Inc. Specifications subject to change without notice. 011807
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
