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For technical support and more information, see inside back cover or visit www.ti.com/powertrends

PT4210 Series --48V

Features

Wide Input Voltage Range:
38V to 75V

1,500 VDC Isolation

6 Pin DIP Package

Low-Profile (8mm)

Pin-compatible with PT4200 Series

No External Components Required

Safety Approvals --Pending

Description

The PT4210 series of low-power

isolated DC-DC converters are pin-

compatible with Power Trends' popular
PT4200 series. The PT4210 series has
improved load regulation over the
PT4200, and is a compatible alternative
for both new and existing designs.
Applications include Telecom and
Datacom systems where both board
space and height are a premium.

The PT4210 series is offered in both

through-hole or SMD-DIP package
types with single non-adjustable output
voltages of 3.3V, 5V, and 12V.

Ordering Information

PT4212

G = 3.3V/1.5A

PT4213

G = 5V/1.2A

PT4214

G = 12V/0.6A

Pin-Out Information

Function

out

N/C

Remote On/Off

5-7 Watt Low-Profile
Isolated DC-DC Converter

(For dimensions and PC board

layout, see Package Style 910)

Package Top View

SLTS137A

(Revised 4/19/2001)

PT4210

1 1

1 7

1 8

1
2

+Vin
Vin

R e m o t e

On/Off

+Vout
Vout

N/C

Package Suffix

(PT1234

)

Case/Pin

Configuration
Through-Hole

Surface Mount

Specifications

Characteristics

PT4210 SERIES

= 25°C unless noted)

Symbols

Conditions

Min

Typ

Max

Units

Output Current

Over V

range

PT4212 (3.3V)

1.5

PT4213 (5.0V)

1.2

PT4214 ( 12V)

0.6

Output Voltage Tolerance

Over Vin range,

PT4212

3.17

3.5

10%I

max

max,

PT4213

4.85

5.25

40°C < T

<85°C

PT4214

11.5

12.5

Idling Voltage

= 0A

PT4212

3.7

3.9

PT4213

5.4

5.9

PT4214

12.7

Line Regulation

Reg

line

Over V

range @ max I

PT4212/4213

±20

PT4214

±45

Load Regulation

Reg

load

=53V

PT4212/13

±100

10%I

max

PT4214

±150

Current Limit

lim

Over V

range

PT4212

3.0

PT4213

3.0

PT4214

1.5

Short Circuit Current

Over V

range

PT4212

2.4

PT4213

1.5

PT4214

1.0

Inrush Current

= 53V @ max I

0.5

On start-up

1.0

mSec

Input Voltage Range

Over I

range

Ripple/Noise

= 53V, I

max

Transient Response

=53V, 10%..100%I

max, 50% load step

200

µSec

over/undershoot:

PT4212/4213

+150/250

PT4214

+250/500

Efficiency

=53V, I

=1.5A,

PT4212

=53V, I

=1.2A,

PT4213

=53V, I

=0.6A,

PT4214

Switching Frequency

Over V

and I

ranges

400

500

kHz

Operating Temperature

Over V

range

-40

+85

(1)

°C

Storage Temperature

-40

+125

°C

Mechanical Shock--

Per Mil-STD-202F, Method 213B,

TBD

G's

6mS half-sine, mounted to a PCB

Mechanical Vibration

Per Mil-STD-202F, Method 204D,

TBD

G's

10-500Hz, mounted to a PCB

Weight

grams

Isolation

1500

VDC

Flammability

Materials meet UL 94V-0

Notes: (1) See SOA curves or consult the factory for the appropriate derating.

(2) The maximum output capacitance must not exceed 150µF for the PT4212, 120µF for the PT4213, and 47µF for the PT4214.

For technical support and more information, see inside back cover or visit www.ti.com/powertrends

Typical Characteristics

PT4210 Series --48V

5-7 Watt Low-Profile
Isolated DC-DC Converter

PT4213 Performance

(See Note A)

Efficiency Vs Output Current

Power Dissipation Vs Output Current

Ripple Voltage Vs Output Current

Safe Operating Area, V

=3660V

PT4212 Performance

(See Note A)

PT4214 Performance

(See Note A)

Efficiency Vs Output Current

Ripple Voltage Vs Output Current

Power Dissipation Vs Output Current

Note A:

All Characteristic data in the above graphs has been developed from actual products tested at 25°C. This data is considered typical data for the converter.

Note B:

SOA curves represent operating conditions at which internal components are at or below manufacturer's maximum rated operating temperatures.

Safe Operating Area, V

=3660V

Safe Operating Area, V

=3660V

20.0

30.0

40.0

50.0

60.0

70.0

80.0

90.0

0.0

0.3

0.6

0.9

1.2

1.5

Iout (A)

Ambient Temperature (°C)

200LFM

120LFM

60LFM

Nat conv

Airflow

20.0

30.0

40.0

50.0

60.0

70.0

80.0

90.0

0.0

0.1

0.2

0.3

0.4

0.5

0.6

Iout (A)

Ambient Temperature (

°
C)

60LFM

Nat conv

Airflow

20.0

30.0

40.0

50.0

60.0

70.0

80.0

90.0

0.0

0.2

0.4

0.6

0.8

1.0

1.2

Iout (A)

Ambient Temperature (

°
C)

Nat conv

Airflow

0.1

0.2

0.3

0.4

0.5

0.6

Iout - (A)

Efficiency - %

53V

38V

75V

0.1

0.2

0.3

0.4

0.5

0.6

Iout (A)

Ripple - mV

38V

53V

75V

0.3

0.6

0.9

1.2

1.5

0.1

0.2

0.3

0.4

0.5

0.6

Iout (A)

Pd - Watts

75V

38V

53V

0.2

0.4

0.6

0.8

1.2

Iout (A)

Efficiency - %

38V

53V

75V

0.3

0.6

0.9

1.2

1.5

Iout (A)

Efficiency - %

38V

53V

75V

0.3

0.6

0.9

1.2

1.5

Iout (A)

Ripple - mV

75V

38V

53V

0.3

0.6

0.9

1.2

1.5

0.3

0.6

0.9

1.2

1.5

Iout (A)

Pd - Watts

75V

53V

38V

0.2

0.4

0.6

0.8

1.2

Iout (A)

Ripple - mV

75V

38V

53V

0.3

0.6

0.9

1.2

1.5

0.2

0.4

0.6

0.8

1.2

Iout (A)

Pd - Watts

75V

53V

38V

Application Notes

For technical support and more information, see inside back cover or visit www.ti.com/powertrends

PT4210 Series

Using the Remote On/Off Function on the
PT4210 Isolated 7W DC/DC Converters

Applications requiring output voltage On/Off control, the
PT4210 DC/DC converter series incorporates a "Remote
On/Off" control (pin 11). This feature can be used when
there is a requirement for the module to be switched off
without removing the applied input source voltage.

The converter functions normally with Pin 11 open-circuit,
providing a regulated output voltage when a valid source
voltage is applied to +V

(pin 18), with respect to V

(pin 17). When a low-level

ground signal is applied to

pin 11, the converter output will be turned off.

Figure 1 shows an application schematic, which details
the typical use of the Remote On/Off function. Note the
discrete transistor (Q1). The control pin has its own
internal pull-up, and must be controlled with an open-
collector or open-drain device (See notes 2 & 3). Table 1
gives the input requirements.

When placed in the "Off" state, the standby current drawn
from the input source is typically reduced to less than 1mA.

Table 1; Remote On/Off Control Requirements

Parameter

Min

Typ

Max

Disable

-0.1V

1.0V

Enable

5.0V 3

Open-Circuit 2

Vo/c [Open-Circuit]

10V

Iin [pin 11 at Vin]

100µA

Notes:
1. The Remote On/Off control uses V

(pin 17) as its ground

reference. All voltages specified are with respect to V

2. Use an open-collector device (preferably a discrete

transistor) for the Remote On/Off input. Do not connect a
pull-up resistor directly to pin 11.

3. The Remote On/Off pin may be controlled with devices that have

a totem-pole output providing that a blocking diode is
used (See Figure 1). The blocking diode is required to
prevent current from being injected into On/Off control
pin. Note: For TTL devices a pull-up may be required on the
cathode side of the blocking diode. This is to guarantee a
minimum enable voltage at pin 11 (See Figure 1).

4. The PT4210 converters incorporate an "Under-Voltage

Lockout" (UVLO). The UVLO will keep the module off
when the input voltage to the converter is low, regardless of
the state of the Remote On/Off control. Table 2 gives the
UVLO input voltage thresholds.

Table 2; UVLO Thresholds

Figure 1

Turn-On Time:

In the circuit of Figure 1, turning Q

on applies a

low-voltage to pin 11 and disables the converter output.
Correspondingly, turning Q

off allows pin 11 to be pulled

high by an internal pull-up resistor. The converter produces a
regulated output voltage within 50ms. Although the rise-
time of the output is short (<1ms), the delay time will vary
depending upon the input voltage and the module's internal
timing. Figure 2 shows shows an example of the output
response for a PT4213 (5.0V), following the turn-off of
Q

at time t =0. The waveform was measured with a 48Vdc

input voltage, and 1.2Adc resistive load.

Figure 2

10k

Q1
BSS138

+ V

-V

+ V

-V

Vdd

1 = O F F

Note 1

U1a

Note 1

D1
1N4148

or similar low-leakage PIN diode

PT4210

+ V out

-Vout

+ Vin

-Vin

Remote

On/Off*

Series

Range

UVLO Threshold

PT4210

38 75V

36V ±2V

time (milli-secs)

(2V/Div)

delay time

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Post Office Box 655303
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2001, Texas Instruments Incorporated

Part Number PT4210