JHW050AF Datasheet JHW050AF, JHW050AF-S, JHW050FG | P7-P9

Lineage Power 7

Data Sheet

April 2008 Converter: 36 Vdc to 75 Vdc Input, Dual Positive Outputs; 50W

JHW050 Dual Positive Output-Series Power Modules: dc-dc

Characteristic Curves – FG & FY

The following figures provide typical characteristics for the JHW050FG & FY. The figures are identical for either

positive or negative Remote On/Off logic.

1-0859

Figure 7. Typical Start-up Using Remote On/Off

JHW050FG

1-0860

Figure 8. Typical Output Ripple and Noise

JHW050FG

1-0861

Figure 9. Typical VO1 Transient Response at 54VIN,

Nominal Output Voltages, I

O1 = 6A to 3A,

to 6 A and I

O2 = 3A JHW050FG.

1-0862

Figure 10.Typical VO2 Transient Response at 54VIN,

Nominal Output Voltages, I

O2 = 6A to 3A,

to 6A and I

O1 = 3A JHW050FG.

1-0863

Figure 11.Converter Efficiency vs. Total Output

Current I

O1 = IO2 JHW050FG

TIME, t (5 ms/div)

OUTPUT VOLTAGE,

VO (V) (1 V/div)

REMOTE ON/OFF

ON/OFF

(V)

TIME, t (2 µs/div)

OUTPUT VOLTAGE,

VO (V) (20 mV/div)

= 3.3 V

= 2.5 V

TIME, t (50 µs/div)

OUTPUT VOLTAGE,

(V) (200 mV/div)

OUTPUT VOLTAGE,

(V) (200 mV/div)

OUTPUT CURRENT,

(A) (5 A/div)

TIME, t (50 µs/div)

OUTPUT VOLTAGE,

(V) (200 mV/div)

OUTPUT VOLTAGE,

(V) (200 mV/div)

OUTPUT CURRENT,

(A) (5 A/div)

2 4 6 8 10 12 14 1

OUTPUT CURRENT, I

O (A)

EFFICIENCY, η (%)

VI = 36 V

I = 54 V

I = 75 V

88 Lineage Power

Data Sheet

April 2008Converter: 36 Vdc to 75 Vdc Input, Dual Positive Outputs; 50W

JHW050 Dual Positive Output-Series Power Modules: dc-dc

Test Configurations

Note: Measure input reflected ripple current with a simulated source inductance (LTEST) of

12 µH. Capacitor CS offsets possible battery impedance. measure current as shown

above.

Figure 12.Input Reflected Ripple Current Test

Setup

Note: Use a 1µF ceramic capacitor and a 10µF aluminium or tantalum capacitor. The

scope measurement should be made using a BNC socket. Position the load 50mm

to 75mm (2” to 3”) from the moudle.

Figure 13.Output Ripple and Noise Test Setup

Note: All voltage measurements to be taken at the module terminals, as shown above. If

sockets are used then Kelvin connections are required at the module terminals to

avoid measurement errors due to socket contact resistance.

Figure 14.Output Voltage and Efficiency Test Setup

Design Considerations

Input Source Impedance

The power module should be connected to a low ac-

impedance source. A highly inductive sourceimped-

ance can affect the stability of the power module. For

the test configuration in Figure 12, a 33µF electrolytic

capacitor (ESR<0.7Ω at 100kHz), mounted close to the

power module helps ensure the stability of the unit.

Consult the factory for further application guidelines.

Safety Considerations

For safety-agency approval of the system in which the

power module is used, the power module must be

installed in compliance with the spacing and separation

requirements of the end-use safety agency standard,

i.e., UL60950, CSA C22.2 No. 60950-00, and EN

60950 (VDE 0805): 2001-12.

If the input source in non-SELV (ELV or a hazardous

voltage greater than 60 Vdc and less than or equal to

75 Vdc), for the modules’s output to be considered as

meeting the requirements for safety extra-low voltage

(SELV), all of the following must be true:

n the input source is to be provided with reinforced

insulation from any hazardous voltages, including the

ac mains.

n One VI pin and one VO pin are to be grounded, or

both the input and output pins are to be kept floating.

n The input pins of the module are not operator acces-

sible.

n Another SELV reliability test is conducted on the

whole system, as reauired by the safety agencies, on

the combination of supply source and subject mod-

ule to verify that under a single fault, hazardous volt-

ages do not appear at the module’s output.

Note: Do not ground either of the input pins of the module without grounding one of the

output pins. This may allow a non-SELV voltage to appear between the output pins

and ground.

The power module has extra-low voltage (ELV) outputs

when all inputs are ELV.

For input voltages exceeding –60 Vdc but less than or

equal to –75 Vdc, these converters have been evalu-

ated to the applicable requirements of BASIC INSULA-

TION between secondary DC MAINS DISTRIBUTION

input (classified as TNV-2 in Europe) and unearthed

SELV outputs. (–B option only)

The input to these units is to be provided with a maxi-

mum 5A normal-blow fuse in the ungrounded lead.

TO OSCILLOSCOPE

CURRENT PROBE

TES T

12μH

BATTERY

220μF

E.S.R.<0.1Ω

@ 20°C 100kHz

33μF

(+)

(-)

COPPER STRIPS

VO1(+)

O1(–)

O2(+)

O2(–)

1µF

SCOPE

RLOAD

SCOPE

10µF

1µF

VI(+)

CONTACT AND

DISTRIBUTION LOSSES

LOAD1

VI(–)

CONTACT AND

DISTRIBUTION LOSSES

RLOAD2

VO1(+)

O1(–)

O2(+)

O2(–)

VO1

VO2

Efficiency η

-------------------------------------------

Lineage Power 9

Data Sheet

April 2008 Converter: 36 Vdc to 75 Vdc Input, Dual Positive Outputs; 50W

JHW050 Dual Positive Output-Series Power Modules: dc-dc

Feature Descriptions

Flexible Power Trading

The full rated output current can be drawn from either

output within the limits shown in Figure 15.

1-0864

Figure 15.Current Sharing Between Outputs

Overcurrent Protection

To provide protection in a fault (output overload) condi-

tion, the unit is equipped with internal current-limiting

circuitry and can endure current limiting continuously.

At the point of current-limit inception, the unit enters

hiccup mode. The unit operates normally once the out-

put current is brought back into its specified range. The

average output current during hiccup is 15% I

O,max.

Remote On/Off

Two remote on/off options are available. Positive logic

turns the module on during a logic high voltage on the

ON/OFF pin, and off during a logic low. Negative logic

turns the module off during a logic high and on during a

logic low. Negative logic, device code suffix “1”, is the

factory-preferred configuration.

Figure 16.Remote On/Off Implementation

To turn the power module on and off, the user must

supply a switch (open collector or equivalent) to control

the voltage (V

on/off) between the ON/OFF terminal and

the V

I(-) terminal (see Figure 16). Logic low is 0V ≤

on/off ≤ 0.8V. The maximum Ion/off during a logic low is

1mA, the switch should be maintain a logic low level

whilst sinking this current.

During a logic high, the maximum V

on/off generated by

the module is 15V, and the maximum allowable leak-

age current at V

on/off = 15V is 50µA.

If not using the remote on/off feature:

For negative logic, short the ON/OFF pin to V

I(-).

For positive logic, leave the ON/OFF pin open.

Output Overvoltage Protection

The main output voltage is limited by an internal clamp.

This provides protection from excessive overvoltage. If

an accurate overvoltage limit is required this should be

implemented externally via the remote On/Off function.

Figure 17 shows a basic circuit for a 5V output unit with

positive remote On/Off logic. In an overvoltage condi-

tion the unit will shut down and then restart.

Figure 17.Overvoltage Circuit

Overtemperature Protection

To provide protection in a fault condition, the unit is

equipped with a thermal shutdown circuit. the unit will

shutdown if the overtemperature threshold is

exceeded, it will then wait for the unit to cool before

attempting to restart.

The unit will typically enter thermal shutdown when the

temperatures measured at the thermal reference points

(see Figures 20 and 21) reach 120 °C.

SeqFET Drive Supply – Optional (–F)

The SeqFET function provides a DC voltage above the

main output suitable for driving an external FET in

series with V

O1 and/or VO2. This allows for flexibility in

sequencing turn-on and turn-off of the module outputs.

Figure 18.SeqFET Application

Note: SeqFET pin 8 is an optional pin. Standard modules will not have this pin fitted.

0 2 4 6 8 10 12 14 1

O2 (A)

(A)

FG, FY, GY

ON/OFF

(+)

(-)

on/off

(+)

(-)

(+)

ON/OFF

(-)

(+)

(-)

15k

10k

100R

TL431

(+)

SeqFET

(-)

FET

ON/OFF

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P17

JHW050AF

Mfr. #:

Buy JHW050AF

Manufacturer:

Description:

DC DC CONVERTER 5V 3.3V 50W

Lifecycle:

New from this manufacturer.

Delivery:

DHL FedEx Ups TNT EMS

Payment:

T/T Paypal Visa MoneyGram Western Union

JHW050AF

JHW050AF

Products related to this Datasheet