GE Industrial Solutions 12A Digital Dual Output MicroDLynx User Manual

GE

Datasheet

2 × 12A Digital Dual Output MicroDLynxTM: Non-Isolated DC-DC Power
Modules

4.5Vdc –14.4Vdc input; 0.51Vdc to 5.5Vdc output; 2 × 12A Output Current

Features

 Wide Input voltage range (4.5Vdc-14.4Vdc)

 Each Output voltage programmable from 0.6Vdc to

5.5Vdc via external resistor. Digitally adjustable down
to 0.51Vdc

 Small size: 20.32 mm x 11.43 mm x 8.5 mm

(0.8 in x 0.45 in x 0.335 in)

RoHS Compliant

Applications

 Distributed power architectures

 Intermediate bus voltage applications

 Telecommunications equipment

 Servers and storage applications

 Networking equipment

 Industrial equipment

Vin+

CI2

CI3

CI1

GND

VIN1

PGOO D1

MODULE

SYNC

CLK

DA TA
SMBALRT#

ON/OFF1

PGND

ON/OFF2

PGOO D2

VIN2

VOUT1

VS+1

TRIM1

ADDR0

ADDR1

SIG_GND

PGND

TRIM2

VS+2

VOUT2

RADDR1

RTUNE1

CTUNE2

RTrim1

RADDR0

RTrim2

RTUNE2

CTUNE2

Vout+

CO1

CO3

CO2

CO4

Description

The 2 × 12A Digital Dual MicroDlynxTM power modules are non-isolated dc-dc converters that can deliver up to 2 × 12A of output
current. These modules operate over a wide range of input voltage (V
voltages from 0.51Vdc to 5.5Vdc, programmable via an external resistor and PMBus control. Features include a digital interface
using the PMBus protocol, remote On/Off, adjustable output voltage, over current and over temperature protection. The PMBus
interface supports a range of commands to both control and monitor the module. The module also includes the Tunable Loop
feature that allows the user to optimize the dynamic response of the converter to match the load with reduced amount of output
capacitance leading to savings on cost and PWB area.

*

UL is a registered trademark of Underwriters Laboratories, Inc.

†

CSA is a registered trademark of Canadian Standards Association.

‡

VDE is a trademark of Verband Deutscher Elektrotechniker e.V.

** ISO is a registered trademark of the International Organization of Standards

#

The PMBus name and logo are registered trademarks of the System Management Interface Forum (SMIF)

 Wide operating temperature range -40°C to 85°C

TM #

 Digital interface through the PMBus

 Tunable Loop

TM

to optimize dynamic output voltage

protocol

response

 Power Good signal for each output

 Fixed switching frequency with capability of external

synchronization

 180° Out-of-phase to reduce input ripple

 Output overcurrent protection (non-latching)

 Output Overvoltage protection

 Over temperature protection

 Remote On/Off

 Ability to sink and source current

 Start up into Pre-biased output

 Cost efficient open frame design

 Compliant to RoHS II EU “Directive 2011/65/EU”

 Compatible in a Pb-free or SnPb reflow environment

 Compliant to REACH Directive (EC) No 1907/2006

 Compliant to IPC-9592 (September 2008), Category 2,

Class II

 UL* 60950-1 2

60950-1-07 Certified, and VDE

nd

Ed. Recognized, CSA† C22.2 No.

‡

(EN60950-1 2nd Ed.)

Licensed

 ISO** 9001 and ISO 14001 certified manufacturing

facilities

= 4.5Vdc-14.4Vdc) and provide precisely regulated output

IN

TM

February 14, 2014 ©2014 General Electric Corporation. All rights reserved.

GE

Datasheet

2 × 12A Digital Dual MicroDlynxTM: Non-Isolated DC-DC Power Modules

4.5Vdc –14.4Vdc input; 0.51Vdc to 5.5Vdc output; 2 × 12A Output Current

Absolute Maximum Ratings

Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress
ratings only, functional operation of the device is not implied at these or any other conditions in excess of those given in the
operations sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect the
device reliability.

Parameter Device Symbol Min Max Unit

Input Voltage All V

Continuous

VS+1, VS+2, SMBALERT# All -0.3 7 V

CLK, DATA, SYNC, All -0.3 3.6 V

Operating Ambient Temperature All T

(see Thermal Considerations section)

Storage Temperature All T

Electrical Specifications

Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions.

Parameter Device Symbol Min Typ Max Unit

Operating Input Voltage All

Maximum Input Current All

(VIN=3V to 14.4V, IO=I

Input No Load Current

= 12Vdc, IO = 0, module enabled)

(V

IN

Input Stand-by Current

= 12Vdc, module disabled)

(V

IN

Inrush Transient All I

Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 1H source impedance; V
I

= I

; See Test Configurations)

O

Omax

Input Ripple Rejection (120Hz) All

)

O, max

V

= 0.6 Vdc

O,set

V

= 5.5Vdc

O,set

All

=4.5 to 14V,

IN

All

and V

IN1

IN2

A

stg

and

V

IN1

V

IN2

I

IN1,max &

I

IN2,max

I

IN1,No load &

I

IN2,No load

I

IN,1No load &

I

IN2,No load

I

IN1,stand-by &

I

IN2,stand-by

2

2

t & I

t 1 A2s

1

2

Both
Inputs

Both
Inputs

-0.3 15 V

-40 85 °C

-55 125 °C

4.5

⎯

23 Adc

72 mA

210 mA

14 mA

25 mAp-p

-68 dB

14.4 Vdc

February 14, 2014 ©2014 General Electric Corporation. All rights reserved. Page 2

GE

Datasheet

2 × 12A Digital Dual MicroDlynxTM: Non-Isolated DC-DC Power Modules

4.5Vdc –14.4Vdc input; 0.51Vdc to 5.5Vdc output; 2 × 12A Output Current

Electrical Specifications (continued)

Parameter Device Symbol Min Typ Max Unit

Output Voltage Set-point (with 0.1% tolerance for external
resistor used to set output voltage)
Output Voltage (Over all operating input voltage, resistive load,
and temperature conditions until end of life)

All

All

Adjustment Range (selected by an external resistor)
(Some output voltages may not be possible depending on the
input voltage – see Feature Descriptions Section)

All VO1 & VO2 0.6* 5.5 Vdc

*0.51V possible through PMBus command

PMBus Adjustable Output Voltage Range All VO1,adj, VO2,adj -15 0 +10 %V

PMBus Output Voltage Adjustment Step Size All Both outputs 0.4 %V

Remote Sense Range All Both outputs 0.5 Vdc

Output Regulation (for VO  2.5Vdc) Both Outputs

Line (VIN=V

Load (IO=I

IN, min

O, min

to V

) All Both Outputs

IN, max

to I

) All Both Outputs

O, max

Output Regulation (for VO < 2.5Vdc)

Line (VIN=V

Load (IO=I

Temperature (T

IN, min

O, min

to V

) All Both Outputs

IN, max

to I

) All Both Outputs

O, max

to T

ref=TA, min

) All Both Outputs

A, max

Output Ripple and Noise on nominal output at 25°C

(VIN=V
output)

IN, nom

and IO=I

O, min

to I

Co = 2×0.1 + 2×47uF per

O, max

Peak-to-Peak (5Hz to 20MHz bandwidth) All

RMS (5Hz to 20MHz bandwidth) All 20 38 mV

External Capacitance1

Without the Tunable Loop

TM

ESR  1 m All C

With the Tunable Loop

TM

ESR  0.15 m All C

ESR  10 m All C

Output Current (in either sink or source mode) All I

Output Current Limit Inception (Hiccup Mode)
(current limit does not operate in sink mode)

All I

Output Short-Circuit Current All I

(VO250mV) ( Hiccup Mode )

Efficiency V

VIN= 12Vdc, TA=25°C V

IO=I

O, max , VO

= V

V

O,set

V

V

V

= 0.6Vdc  1,  2 79 %

O,set

= 1.2Vdc  1,  2 88 %

O, set

= 1.8Vdc  1,  2 91 %

O,set

= 2.5Vdc  1,  2 93 %

O,set

= 3.3Vdc  1,  2 94 %

O, set

= 5.0Vdc  1,  2 95 %

O,set

Switching Frequency All f

1

External capacitors may require using the new Tunable LoopTM feature to ensure that the module is stable as well as getting the best transient

response. See the Tunable Loop

TM

section for details.

VO1, set & VO2,
set
Vo1, set & VO2,
set

O, max

O, max

O, max

o

O, lim

, I

O1, s/c

O1, s/c

sw

-1.0 +1.0

-3.0

⎯

⎯

⎯

⎯

⎯

⎯

⎯

50 100 mV

+3.0

+0.4 % V

10 mV

5 mV

10 mV

0.4 % V

2×47

⎯

⎯

⎯

2×47 F

1000 F

5000 F

0 12x2 Adc

150 % I

6 Arms

500

⎯

⎯

% VO,

set

% VO,

set

O,set

O,set

O, set

O, set

pk-pk

rms

o,max

kHz

February 14, 2014 ©2014 General Electric Corporation. All rights reserved. Page 3

GE

Datasheet

2 × 12A Digital Dual MicroDlynxTM: Non-Isolated DC-DC Power Modules

4.5Vdc –14.4Vdc input; 0.51Vdc to 5.5Vdc output; 2 × 12AOutput Current

Electrical Specifications (continued)

Parameter Device Symbol Min Typ Max Unit

Frequency Synchronization All

Synchronization Frequency Range All -20% +20% kHz

High-Level Input Voltage All VIH 2.0 V

Low-Level Input Voltage All VIL 0.4 V

Input Current, SYNC All ISYNC 100 nA

Minimum Pulse Width, SYNC All tSYNC 100 ns

Maximum SYNC rise time All tSYNC_SH 100 ns

General Specifications

Parameter Device Min Typ Max Unit

Calculated MTBF (IO=0.8I

Weight

, TA=40°C) Telecordia Issue 2 Method 1 Case 3 All 75,767,425 Hours

O, max

⎯

4.5 (0.16)

⎯

g (oz.)

Feature Specifications

Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See
Feature Descriptions for additional information.

Parameter Device Symbol Min Typ Max Unit

On/Off Signal Interface

(VIN=V

Signal referenced to GND)

Device Code with no suffix – Negative Logic (See Ordering Information)

(On/OFF pin is open collector/drain logic input with

external pull-up resistor; signal referenced to GND)

Logic High (Module OFF)

Input High Current All IIH1, IIH2 — — 1 mA

Input High Voltage All VIH1, VIH2 2 — V

Logic Low (Module ON)

Input low Current All IIL1, IIL2 — — 20 A

Input Low Voltage All VIL1, VIL2 -0.2 — 0.6 Vdc

Turn-On Delay and Rise Times

(VIN=V

Case 1: On/Off input is enabled and then input power is
applied (delay from instant at which V
10% of V

Case 2: Input power is applied for at least one second and
then the On/Off input is enabled (delay from instant at
which Von/Off is enabled until V

Output voltage Rise time (time for Vo to rise from
10% of Vo, set to 90% of Vo, set)

Output voltage overshoot (TA = 25oC
V

IN

With or without maximum external capacitance

= V

IN, min

IN, nom

IN, min

to V

, IO=I

o, set)

to V

; open collector or equivalent,

IN, max

to within ±1% of steady state)

O, max , VO

Tdelay1,
Tdelay2

Tdelay1,
Tdelay2

Trise2

Both

Outputs

— 2 — msec

— 800 —

— 5 — msec

3.0 % V

IN, max,IO

= V

until Vo =

IN

IN, min

o = 10% of Vo, set)

All

All

All Trise1,

= I

to I

O, min

O, max

)

Vdc

IN, max

μsec

O, set

February 14, 2014 ©2014 General Electric Corporation. All rights reserved. Page 4

GE

Datasheet

2 × 12A Digital Dual MicroDlynxTM: Non-Isolated DC-DC Power Modules

4.5Vdc –14.4Vdc input; 0.51Vdc to 5.5Vdc output; 2 × 12A Output Current

Feature Specifications (cont.)

Parameter Device Symbol Min Typ Max Units

Over Temperature Protection
(See Thermal Considerations section)

PMBus Over Temperature Warning Threshold* All T

Input Undervoltage Lockout

All T

ref

WARN

Turn-on Threshold All Both Inputs 4.5 Vdc

Turn-off Threshold All Both Inputs

Hysteresis All Both Inputs

PMBus Adjustable Input Under Voltage Lockout Thresholds All Both Inputs

Resolution of Adjustable Input Under Voltage Threshold All Both Inputs

PGOOD (Power Good)

135 °C

125 °C

4.25 Vdc

0.15 0.2 Vdc

4 14 Vdc

250 mV

Signal Interface Open Drain, V

supply

≤ 5VDC

Overvoltage threshold for PGOOD ON All Both Outputs 108.33 %V

Overvoltage threshold for PGOOD OFF All Both Outputs

Undervoltage threshold for PGOOD ON All Both Outputs

Undervoltage threshold for PGOOD OFF All Both Outputs

Pulldown resistance of PGOOD pin All Both Outputs

Sink current capability into PGOOD pin All Both Outputs

112.5 %V

91.67 %V

87.5 %V

40 70

5 mA

* Over temperature Warning – Warning may not activate before alarm and unit may shutdown before warning

Ω

O, set

O, set

O, set

O, set

February 14, 2014 ©2014 General Electric Corporation. All rights reserved. Page 5

GE

Datasheet

2 × 12A Digital Dual MicroDlynxTM: Non-Isolated DC-DC Power Modules

4.5Vdc –14.4Vdc input; 0.51Vdc to 5.5Vdc output; 2 × 12AOutput Current

Digital Interface Specifications

Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See
Feature Descriptions for additional information.

Parameter Conditions Symbol Min Typ Max Unit

PMBus Signal Interface Characteristics

Input High Voltage (CLK, DATA) VIH 2.1 V

Input Low Voltage (CLK, DATA) VIL 0.8 V

Input high level current (CLK, DATA) IIH -10 10 A

Input low level current (CLK, DATA) IIL -10 10 mA

Output Low Voltage (CLK, DATA, SMBALERT#) I

Output high level open drain leakage current (DATA,
SMBALERT#)

Pin capacitance CO 0 1 pF

PMBus Operating frequency range Slave Mode FPMB 10 400 kHz

Data hold time

Data setup time

Measurement System Characteristics

Output current measurement range

Output current measurement gain accuracy (at 25°C)

V

measurement range

OUT

V

measurement accuracy

OUT

=2mA VOL 0.4? V

OUT

V

=3.6V I

OUT

Receive Mode

Transmit Mode

tSU:DAT

OH

tHD:DAT

I

RNG

I

ACC

V

OUT(rng)

0 10 A

0

300

250 ns

0 18 A

±1 A

0.5 5.8 V

-2 2 %

ns

February 14, 2014 ©2014 General Electric Corporation. All rights reserved. Page 6

,

GE

Datasheet

2 × 12A Digital Dual MicroDlynxTM: Non-Isolated DC-DC Power Modules

4.5Vdc –14.4Vdc input; 0.51Vdc to 5.5Vdc output; 2 × 12A Output Current

Characteristic Curves

The following figures provide typical characteristics for the 2 × 12A Digital Dual MicroDlynxTM at 0.6Vo and 25oC.

90

85

80

75

70

65

60

EFFICIENCY, η (%)

55

50

Vin=4.5V

Vin=12V

2x0 2x2 2x4 2x6 2x8 2x10 2x12

OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC

Vin=14V

Figure 1. Converter Efficiency versus Output Current.

Figure 2. Derating Output Current versus Ambient
Temperature and Airflow.

12

Derating curve applies

10

to Both Outputs

8

6

4

2

OUTPUT CURRENT, Io (A)

0

55 60 65 70 75 80 85

(V) (30mV/div)

O

V

OUTPUT VOLTAGES

TIME, t (1μs/div) TIME, t (20μs /div)

Figure 3. Typical output ripple and noise (CO=

IN

2×0.1uF+2×47uF ceramic, V

(V) (5V/div)

ON/OFF

(V) (200mV/div) V

O

= 12V, Io = I

o1,max, Io2,max,

(20mV/div)

O

(A) (5Adiv) V

O

I

OUTPUT CURRENT, OUTPUT VOLTAGE

Figure 4. Transient Response to Dynamic Load Change from

).

50% to 100% on one output at 12Vin,
Cout=2x47uF+7x330uF

CTune=12nF, RTune=300

(V) (10V/div)

IN

(V) (200mV/div) V

O

OUTPUT VOLTAGES ON/OFF VOLTAGE

V

Figure 5. Typical Start-up Using On/Off Voltage (Vin=12V, Io=

o1,max, Io2,max,

I

).

TIME, t (2ms/div) TIME, t (2ms/div)

OUTPUT VOLTAGES INPUT VOLTAGE

V

Figure 6. Typical Start-up Using Input Voltage (V

o1,max, Io2,max,

I

).

IN

= 12V, Io=

February 14, 2014 ©2014 General Electric Corporation. All rights reserved. Page 7

GE

Datasheet

2 × 12A Digital Dual MicroDlynxTM: Non-Isolated DC-DC Power Modules

4.5Vdc –14.4Vdc input; 0.51Vdc to 5.5Vdc output; 2 × 12AOutput Current

Characteristic Curves

The following figures provide typical characteristics for the 2 × 12A Digital Dual MicroDlynxTM at 1.2Vo and 25oC.

95

90

85

80

75

70

65

60

EFFICIENCY, η (%)

55

50

Vin=4.5V

Vin=14V

Vin=12V

2x0 2x2 2x4 2x6 2x8 2x10 2x12

OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC

Figure 7. Converter Efficiency versus Output Current.

Figure 8. Derating Output Current versus Ambient
Temperature and Airflow.

12

Derating curve applies

10

to Both Outputs

8

6

4

2

OUTPUT CURRENT, Io (A)

0

55 60 65 70 75 80 85

0.5m/s

(100LFM)

NC

(V) (30mV/div)

O

V

OUTPUT VOLTAGES

TIME, t (1μs/div) TIME, t (20μs /div)

Figure 9. Typical output ripple and noise (CO=
2×0.1uF+2×47uF ceramic, V

(V) (5V/div)

ON/OFF

(V) (500mV/div) V

O

IN

= 12V, Io = I

o1,max, Io2,max

(20mV/div)

O

(A) (5Adiv) V

O

I

OUTPUT CURRENT, OUTPUT VOLTAGE

Figure 10. Transient Response to Dynamic Load Change on

).

one output from 50% to 100% at 12Vin,
Cout=3x47uF+3x330uF, CTune=2700pF & RTune=300

(V) (10V/div)

IN

(V) (500mV/div) V

O

OUTPUT VOLTAGES ON/OFF VOLTAGE

V

Figure 1. Typical Start-up Using On/Off Voltage (VIN= 12V, I
= I

o1,max, Io2,max

).

TIME, t (2ms/div) TIME, t (2ms/div)

o

OUTPUT VOLTAGES INPUT VOLTAGE

V

Figure 12. Typical Start-up Using Input Voltage (V
I

o1,max, Io2,max

).

IN

= 12V, Io=

February 14, 2014 ©2014 General Electric Corporation. All rights reserved. Page 8

t

GE

Datasheet

2 × 12A Digital Dual MicroDlynxTM: Non-Isolated DC-DC Power Modules

4.5Vdc –14.4Vdc input; 0.51Vdc to 5.5Vdc output; 2 × 12A Output Current

Characteristic Curves

The following figures provide typical characteristics for the 2 × 12A Digital Dual MicroDlynxTM at 1.8Vo and 25oC.

100

95

90

85

80

EFFICIENCY, η (%)

75

70

2x0 2x2 2x4 2x6 2 x8 2x10 2x12

Vin=4.5V

Vin=12V

OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC

Vin=14V

Figure 13. Converter Efficiency versus Output Current.

14

12

Derating curve applies

10

to Both Outputs

8

6

4

2

OUTPUT CURRENT, Io (A)

0

55 65 75 85

Figure 14. Derating Output Current versus Ambient
Temperature and Airflow.

1.0m/s

(200LFM)

NC

0.5m/s

(100LFM)

(V) (30mV/div)

O

V

OUTPUT VOLTAGES

TIME, t (1μs/div) TIME, t (20μs /div)

Figure 15. Typical output ripple and noise (CO=

IN

2×0.1uF+2×47uF ceramic, V

(V) (5V/div)

ON/OFF

(V) (500mV/div) V

O

= 12V, Io = I

o1,max, Io2,max

(20mV/div)

O

(A) (5Adiv) V

O

I

OUTPUT CURRENT, OUTPUT VOLTAGE

Figure 16. Transient Response to Dynamic Load Change on

).

one output from 50% to 100% at 12Vin, Cout =
3x47uF+2x330uF, CTune = 1800pF & RTune = 300

(V) (10V/div)

IN

(V) (500mV/div) V

O

OUTPUT VOLTAGES ON/OFF VOLTAGE

V

Figure 17. Typical Start-up Using On/Off Voltage (VIN= 12V, I
= I

o1,max, Io2,max

).

TIME, t (2ms/div) TIME, t (2ms/div)

OUTPUT VOLTAGES INPUT VOLTAGE

V

o

Figure 18. Typical Star
I

o1,max, Io2,max

).

-up Using Input Voltage (VIN= 12V, Io=

February 14, 2014 ©2014 General Electric Corporation. All rights reserved. Page 9

t

GE

Datasheet

2 × 12A Digital Dual MicroDlynxTM: Non-Isolated DC-DC Power Modules

4.5Vdc –14.4Vdc input; 0.51Vdc to 5.5Vdc output; 2 × 12AOutput Current

Characteristic Curves

The following figures provide typical characteristics for the 2 × 12A Digital Dual MicroDlynxTM at 2.5Vo and 25oC.

100

95

90

85

80

EFFICIENCY, η (%)

75

70

Vin=4.5V

Vin=12V

2x0 2x2 2x4 2x6 2 x8 2x10 2x12

OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC

Vin=14V

Figure 19. Converter Efficiency versus Output Current.

Figure 20. Derating Output Current versus Ambient
Temperature and Airflow.

12

10

Derating curve applies

8

to Both Outputs

6

4

2

OUTPUT CURRENT, Io (A)

0

55 65 75 85

NC

1m/s

(200LFM)

0.5m/s

(100LFM)

(V) (30mV/div)

O

V

OUTPUT VOLTAGES

TIME, t (1μs/div) TIME, t (20μs /div)

Figure 21. Typical output ripple and noise (CO=
2x0.1uF+2x47uF ceramic, V

(V) (5V/div)

ON/OFF

(V) (1V/div) V

O

IN

= 12V, Io = I

o1,max, Io2,max

(50mV/div)

O

(A) (5Adiv) V

O

I

OUTPUT CURRENT, OUTPUT VOLTAGE

Figure 22. Transient Response to Dynamic Load Change on

).

one output from 50% to 100% at 12Vin,
Cout=3x47uF+2x330uF, CTune=1500pF & RTune = 300

(V) (10V/div)

IN

(V) (1V/div) V

O

OUTPUT VOLTAGES ON/OFF VOLTAGE

V

Figure 23. Typical Start-up Using On/Off Voltage (VIN= 12V, I
= I

o1,max, Io2,max

).

TIME, t (2ms/div) TIME, t (2ms/div)

OUTPUT VOLTAGES INPUT VOLTAGE

V

o

Figure 24. Typical Star
I

o1,max, Io2,max

).

-up Using Input Voltage (VIN= 12V, Io=

February 14, 2014 ©2014 General Electric Corporation. All rights reserved. Page 10

GE

Datasheet

2 × 12A Digital Dual MicroDlynxTM: Non-Isolated DC-DC Power Modules

4.5Vdc –14.4Vdc input; 0.51Vdc to 5.5Vdc output; 2 × 12A Output Current

Characteristic Curves

The following figures provide typical characteristics for the 2 × 12A Digital Dual MicroDlynxTM at 3.3Vo and 25oC.

100

95

Vin=4.5V

90

85

80

EFFICIENCY, η (%)

75

70

2x0 2x2 2x4 2x6 2 x8 2x10 2x12

Vin=12V

OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC

Vin=14V

Figure 25. Converter Efficiency versus Output Current.

Figure 26. Derating Output Current versus Ambient
Temperature and Airflow.

12

10

Derating curve applies

8

to Both Outputs

6

4

2

OUTPUT CURRENT, Io (A)

0

55 65 75 85

NC

1m/s

(200LFM)

0.5m/s

(100LFM)

1.5m/s

(300LFM)

(V) (30mV/div)

O

V

OUTPUT VOLTAGES

TIME, t (1μs/div) TIME, t (20μs /div)

Figure 27. Typical output ripple and noise (CO=

IN

2x0.1uF+2x47uF ceramic, V

(V) (5V/div)

ON/OFF

(V) (1V/div) V

O

= 12V, Io = I

o1,max, Io2,max

(V) (50mV/div)

O

(A) (5Adiv) V

O

I

OUTPUT CURRENT, OUTPUT VOLTAGE

Figure 28 Transient Response to Dynamic Load Change on

).

one output from 50% to 100% at 12Vin,
Cout=3x47uF+1x330uF, CTune = 1200pF & RTune = 300

(V) (10V/div)

IN

(V) (1V/div) V

O

OUTPUT VOLTAGES ON/OFF VOLTAGE

V

Figure 29. Typical Start-up Using On/Off Voltage (VIN= 12V, I
= I

o1,max, Io2,max

).

TIME, t (2ms/div) TIME, t (2ms/div)

o

OUTPUT VOLTAGES INPUT VOLTAGE

V

Figure 30. Typical Start-up Using Input Voltage (V
I

o1,max, Io2,max

).

IN

= 12V, Io=

February 14, 2014 ©2014 General Electric Corporation. All rights reserved. Page 11