S7BA-03F1A0G [BEL]

DC-DC Regulated Power Supply Module, 1 Output, 10W, Hybrid, PACKAGE-6/5;


型号：	S7BA-03F1A0G
厂家：	BEL FUSE INC.
描述：	DC-DC Regulated Power Supply Module, 1 Output, 10W, Hybrid, PACKAGE-6/5
文件：	总9页 (文件大小：290K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

NON-ISOLATED DC/DC CONVERTERS

2.4 Vdc - 5.5 Vdc Input

0.75 Vdc - 3.63 Vdc/3 A Output

SRBA-03F1Ax

RoHS Compliant

Rev.A

•

Non-Isolated

•

OCP/SCP

Remote On/Off

High Efficiency

High Power Density

Fixed Frequency (300 kHz)

Converter Can Sink and Source

Current

Wide Trim Range

Under-voltage Lockout (UVLO)

Description

The Bel SRBA-03F1Ax modules are a series of non-isolated dc/dc converters that deliver up to 3 A of output

current with full load efficiency of 94% at 3.3 Vdc output. These modules provide precisely regulated voltage

programmable via external resistor from 0.75 Vdc to 3.63 Vdc over a wide range of input voltage (2.4 Vdc - 5.5

Vdc). The open-frame construction and small footprint enable designers to develop cost and space-efficient

solutions. Standard features include remote On/Off, over current protection, short circuit protection, under-

voltage lockout, over temperature protection and programmable output voltage.

Part Selection

Output Voltage

Input

Voltage

Max. Output Max. Output

Typical

Efficiency

Model Number

Active Low

Model Number

Active High

Current

Power

0.75 V - 3.63 V¹2.4 V - 5.5 V

3 A

10 W

94%

SRBA-03F1AL

SRBA-03F1A0

Notes: 1. These modules use a buck topology, so the output voltages must be 0.5 V less than the input voltage.

2. Add “G” to the end of the Model Number to indicate Tray Packaging.

3. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers.

Absolute Maximum Ratings

Parameter

Min

Typ

Max

Notes

Input Voltage (continuous)

-0.3 V

5.8 V

Output Enable Terminal Voltage

Ambient Temperature

-0.3 V

-40 °C

-55 °C

5.5 V

85 °C

125 °C

Storage Temperature

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

2.4 Vdc - 5.5 Vdc Input

0.75 Vdc - 3.63 Vdc/3 A Output

Input Specifications

Parameter

Input Voltage

Min

2.4 V

Typ

Max

5.5 V

Notes

Vo, set ≤ Vin-0.5 V

Input Current (full load)

Vo=3.3 V

Vo=2.5 V

Vo=2.0 V

Vo=1.8 V

Vo=1.5 V

Vo=1.2 V

Vo=0.75 V

2.11 A

1.61 A

1.32 A

1.20 A

1.01 A

0.83 A

0.55 A

Input Current (no load)

Vo=3.3 V

Vo=0.75 V

32 mA

20 mA

Remote Off Input Current

4 mA

60 mA

18 mA

Input Reflected Ripple Current (pk-pk)

Tested with simulated source

impedance of 1 uH, 5 Hz to 20 MHz.

Input Reflected Ripple Current (rms)

I²t Inrush Current Transient

0.04 A²s

Turn-on Voltage Threshold

Turn-off Voltage Threshold

2.05 V

2.0 V

2.4 V

1.7 V

Note: All specifications are typical at nominal input, full load at 25°C unless otherwise stated.

Output Specifications

Parameter

Min

Typ

Max

Notes

Output Voltage Set Point

-2%Vo,set

2%Vo,set

Vin=5 V, 50% full load

Over all operating input voltage,

resistive load and temperature

conditions until end of life.

Output Voltage Set Point

-3%Vo,set

3%Vo,set

Adjustment Range Selected by External

Resistor or Voltage

0.7525 V

3.63 V

Load Regulation

0.2%Vo,set

Io=Iomin to 50% Iomax

Vin=Vinmin to Vinmax

Line Regulation

Regulation Over Temperature

(-40 °C to +85 °C)

Output Current

0.4%Vo,set

0 A

4 A

3 A

Current Limit Threshold

9.5 A

Short Circuit Surge Transient

0.32 A²s

Tested with 0-20 MHz, with

10 uF tantalum capacitor & 1 uF/

10 V ceramic capacitor at the

output

Ripple and Noise (pk-pk)

30 mV

50 mV

Ripple and Noise (rms)

Turn on Time

10 mV

15 mV

8 mS

12 mS

Overshoot at Turn on

Output Capacitance

ESR ≥ 1mohm

0 uF

1000 uF

3000 uF

ESR ≥ 10mohm

Transient Response

50% ~ 100% Max Load

150 mV

di/dt=2.5 A/ uS; Vin=5 V; and

with 10 uF tantalum capacitor &

1 uF/10 V TDK ceramic

VO =

0.75 V -3.63 V

Settling Time

100% ~ 50% Max Load

Settling Time

40 uS

150 mV

40 uS

capacitor at the output

Note: All specifications are typical at nominal input, full load 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

2.4 Vdc - 5.5 Vdc Input

0.75 Vdc - 3.63 Vdc/3 A Output

General Specifications

Parameter

Min

Typ

Max

Notes

Efficiency

Vo=3.3 V

94%

93%

91%

90%

89%

87%

81.5%

Vo=2.5 V

Vo=2.0 V

Vo=1.8 V

Vo=1.5 V

Vo=1.2 V

Vo=0.75 V

Measured at Vin=5 V, full load

Switching Frequency

250 kHz

300 kHz

135 °C

350 kHz

Over Temperature Shutdown

Output Voltage Trim Range

0.7525 V

3.63 V

Calculated Per Bell Core SR-332 (Vin=5

V; Vo=1.8 V, IO = 2.4 A; Ta = 25 °C)

MTBF

8,798,829 hours

Dimensions

Inches (L × W × H)

Millimeters (L × W × H)

0.8 x 0.45 x 0.27

20.32 x 11.42 x 6.87

5 g

Weight

Note: All specifications are typical at 25 °C unless otherwise stated.

Control Specifications

Parameter

Min

Typ

Max

Notes

Remote On/Off

Signal Low (Unit Off)

Signal High (Unit On)

Signal Low (Unit On)

Signal High (Unit Off)

-0.2 V

0.3 V

Vin, max

0.3 V

Active High: SRBA-03F1A0; Remote On/Off

pin open, Unit on.

-0.2 V

1.5 V

Active Low: SRBA-03F1AL; Remote On/Off

pin open, Unit on.

Vin, max

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

2.4 Vdc - 5.5 Vdc Input

0.75 Vdc - 3.63 Vdc/3 A Output

Remote Enable Specifications

The SRBA-03F1AL modules feature an enable

pin with negative logic. If not using the enable

pin, leave the pin open (the module will be on).

During logic_high, the module is turned off,

during logic_low, the module is turned on. It inner

circuit impedance is showed as figure.

SRBA-03F1AL

The SRBA-03F1A0 modules feature an enable

pin with Positive logic. If not using the enable pin,

leave the pin open (the module will be on).

During logic_high, the module is turned on,

during logic_low, the module is turned off. It inner

circuit impedance is showed as figure.

SRBA-03F1A0

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

2.4 Vdc - 5.5 Vdc Input

0.75 Vdc - 3.63 Vdc/3 A Output

Output Trim Equations

A: Equation for calculating the trim resistor (in kΩ) given the desired adjusted voltage (Vadj) is shown below.

The Trim Up resistor should be connected between the Trim pin and Ground.

Rtrim vs.Output Voltage

200

21.07

Table 1

Vo (V)

0.7525

1.2

R_trim

− 5.11

180

160

140

120

100

V_adj− 0.7525

Rtrim (Kꢀ)

Open

41.973

23.077

15.004

11.779

6.947

Vout

1.5

1.8

2.0

2.5

Module^Trim

Rtrim

GND

3.3

3.16

0.75 1.04 1.33 1.61 1.9 2.19 2.48 2.77 3.05 3.343.63

Output Voltage(V)

B: Equation for calculating the trim voltage (in V) given the desired adjusted voltage (Vadj) is shown below. The

Trim Up voltage should be connected between the Trim pin and Ground.

V_trim= 0.7 − 0.1698 × (V_adj− 0.7525)

Vtrim vs. Output Voltage

0.7

Table 2

0.65

Vo (V)

0.7525

1.2

1.5

1.8

2.0

2.5

3.3

Vtrim (V)

Open

0.624

0.5731

0.5221

0.4882

0.4033

0.267

0.6

0.55

0.5

Vout

Trim

GND

Module

0.45

0.4

Vtrim

0.35

0.3

0.25

0.2

0.75 1.04 1.33 1.61 1.9 2.19 2.48 2.77 3.05 3.34 3.63

Vo(V)

21.07

Rset

Rup

− 5.11 Kꢀ

V_O

Vo − 0.7525

R_down

21.07⋅Rset − 5.11⋅Vm_up⋅Rset + 3.845⋅Rset

Kꢀ

Vm_up⋅Rset + 5.11⋅Vm_up − 0.753Rset − 24.915

T_rim

Margin up value after output voltage is set with Rset

R_up

R_set

5.978⋅Vm_down⋅Rset − 4.230⋅Rset

Rdown

Kꢀ

0.128⋅Rset − 0.868⋅Vm_down − 0.170⋅Vm_down⋅Rset + 4.230

GND

Margin down value after output voltage is set with Rset

Vm_down≥ 90%Vo

Note: Output voltage Vo=0.7525 V when Trim pin is not connected.

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

2.4 Vdc - 5.5 Vdc Input

0.75 Vdc - 3.63 Vdc/3 A Output

Efficiency Data

Efficiency Curve

100.0%

95.0%

90.0%

85.0%

80.0%

75.0%

70.0%

65.0%

60.0%

100.0%

95.0%

90.0%

85.0%

80.0%

75.0%

70.0%

65.0%

60.0%

4.5 V

5.0 V

5.5 V

4.5 V

5.0 V

5.5 V

0.6

1.2

1.8

2.4

3.0

0.6

1.2

1.8

2.4

3.0

Output Current (A)

Vo=3.3 V

Vo=2.5 V

Efficiency Curve

100.0%

95.0%

90.0%

85.0%

80.0%

75.0%

70.0%

65.0%

60.0%

95.0%

90.0%

85.0%

80.0%

75.0%

70.0%

65.0%

60.0%

3.3 V

5.0 V

5.5 V

3.3 V

5.0 V

5.5 V

0.6

1.2

1.8

2.4

3.0

0.6

1.2

1.8

2.4

3.0

Output Current (A)

Vo=2.0 V

Vo=1.8 V

Efficiency Curve

100.0%

95.0%

90.0%

85.0%

80.0%

75.0%

70.0%

65.0%

60.0%

100.0%

95.0%

90.0%

85.0%

80.0%

75.0%

70.0%

65.0%

60.0%

2.5 V

3.3 V

5.0 V

2.5 V

3.3 V

5.0 V

0.6

1.2

1.8

2.4

3.0

0.6

1.2

1.8

2.4

3.0

Output Current (A)

Vo=1.5 V

Vo=1.2 V

Efficiency Curve

100.0%

95.0%

90.0%

85.0%

80.0%

75.0%

70.0%

65.0%

60.0%

2.5 V

3.3 V

5.0 V

0.6

1.2

1.8

2.4

3.0

Output Current (A)

Vo=0.75 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

2.4 Vdc - 5.5 Vdc Input

0.75 Vdc - 3.63 Vdc/3 A Output

Thermal Derating Curve

Ripple and Noise Waveforms

5.0 V input, 0.75 V output

5.0 V input, 1.8 V output

5.0 V input, 3.3 V output

Note: Ripple and noise at full load, 0-20 MHz BW, 10 uF/10 V tantalum cap and 1 uF/10 V ceramic cap at the

output, and Ta=25 deg C.

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

2.4 Vdc - 5.5 Vdc Input

0.75 Vdc - 3.63 Vdc/3 A Output

Transient Response Waveforms

Transients 50% to 100% load 0.75 Vdc output

Transients 50% to 100% load 1.8 Vdc output

Transients 50% to 100% load 3.3 Vdc output

Transients 100% to 50% load 0.75 Vdc output

Transients 100% to 50% load 1.8 Vdc output

Transients 100% to 50% load 3.3 Vdc output

Note: Transient response at 5 Vdc input, di/dt=2.5 A/uS, with 10 uF/10 V tantalum cap and 1 uF/10 V ceramic

cap at the output, Ta=25 deg C.

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

2.4 Vdc - 5.5 Vdc Input

0.75 Vdc - 3.63 Vdc/3 A Output

Mechanical Outline

Recommended Pad Layout

Pin Connections

Function

Remote On/Off

Vin+

N/A

Ground

Trim

Vout+

PAD SIZE: MIN: 0.12"* 0.095" (3.05mm * 2.41mm)

MAX: 0.135"* 0.11" (3.43mm * 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.

CORPORATE

FAR EAST

EUROPE

Bel Fuse Inc.

Bel Fuse Ltd.

Bel Fuse Europe Ltd.

206 Van Vorst Street

Jersey City, NJ 07302

Tel 201-432-0463

Fax 201-432-9542

www.belfuse.com

8F/ 8 Luk Hop Street

San Po Kong

Kowloon, Hong Kong

Tel 852-2328-5515

Fax 852-2352-3706

www.belfuse.com

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

S7BA-03F1A0G [BEL]

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