H48SA53010PNFH datasheet(8/13 Pages) DELTA

Part #	H48SA53010PNFH

Description	Delphi Series H48SA53010, Half Brick Family DC/DC Power Modules: 48V in, 54V/10.2A out

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Manufacturer	DELTA [Delta Electronics, Inc.]

Direct Link	http://www.deltaww.com

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DS_H48SA53010_08042011

8

FEATURES DESCRIPTIONS

Over-Current Protection

The modules include an internal output over-current

protection circuit, which will endure current limiting for

an unlimited duration during output overload. If the

output current exceeds the OCP set point, the modules

will automatically shut down, the hiccup mode is default

and latch mode is optional.

For hiccup mode, the module will try to restart after

shutdown. If the overload condition still exists, the

module will shut down again. This restart trial will

continue until the overload condition is corrected.

For latch mode, the module will latch off once it

shutdown. The latch is reset by either cycling the input

power or by toggling the on/off signal for one second.

Over-Voltage Protection

The modules include an internal output over-Voltage

protection circuit, which will endure output voltage

limiting. If the output voltage exceeds the OVP set point,

the modules will automatically shut down, the latch

mode is default and the hiccup mode is optional.

For hiccup mode, the module will try to restart after

shutdown. If the overvoltage condition still exists, the

module will shut down again. This restart trial will

continue until the over-voltage condition is corrected.

For latch mode, the module will latch off once it

shutdown. The latch is reset by either cycling the input

power or by toggling the on/off signal for one second.

Over-Temperature Protection

The over-temperature protection consists of circuitry

that provides protection from thermal damage. If the

temperature exceeds the over-temperature threshold

the module will shut down, the hiccup mode is default

and latch mode is optional.

For hiccup mode, the module will monitor the module

temperature after shutdown. Once the temperature is

within

the

specification,

the

module

will

be

auto-restarted.

For latch mode, the module will latch off once it

shutdown. The latch is reset by either cycling the input

power or by toggling the on/off signal for one second.

Remote On/Off

The remote on/off feature on the module can be either

negative or positive logic. Negative logic turns the module

on during a logic low and off during a logic high. Positive

logic turns the modules on during a logic high and off

during a logic low.

Remote on/off can be controlled by an external switch

between the on/off terminal and the Vin (-) terminal. The

switch can be an open collector or open drain.

Figure 15: Remote on/off implementation

Current Share

The modules can operate in parallel up to 3 units and

provide up to 1600W output power without any or-ing

FET or diode. Between 50% and 100% max load rating,

current–sharing accuracy is +/-2.5%. The equation of

Ishare PIN voltage vs. Io is:

Ishare = 0.25*Io+0.25

Ishare unit is Volt, and Io unit is Amp.

In parallel application, if the load current is larger than

one module’s full current, the modules can not restart

automatically even in hiccup mode. Either cycling the

input power or toggling the on/off signal for one second

can startup the modules.

Current Monitor

Imon shall sink a current proportional to output current

and reference to Vout (-). This pin can be pulled up

through an external resistor to an external voltage, the

external voltage ranges from 1.5V to Vout (+) +3.3V.

Output current equals Imon×10,000. Accuracy is +/-

0.5A.

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