Model Selection Guide

www.micropowerdirect.com

Model

Number

Input

Output

Maximum

Power

(W)

Ripple &

Noise

(mV P-P, Max)

Efficiency

(%, Typ)

Current

Range

Range

LD48-09-150W(A)

7.0 - 60.0

2.0 - 57.0

150

±8

9

150

97

LD48-14-250W(A)

7.0 - 60.0

2.0 - 57.0

250

±7

14

200

97

LD48-17-300W(A)

7.0 - 60.0

2.0 - 57.0

300

±6

17

250

97

LD48-20-350W(A)

7.0 - 60.0

2.0 - 57.0

350

±5

20

300

97

LD48-29-500W(A)

7.0 - 60.0

2.0 - 57.0

500

±5

29

400

97

LD48-34-600W(A)

7.0 - 60.0

2.0 - 57.0

600

±5

34

450

97

LD48-40-700W(A)

7.0 - 60.0

2.0 - 57.0

700

±5

40

500

97

LD48-48-1000W(A)

7.0 - 60.0

2.0 - 57.0

1000

±5

48

800

97

Notes:

1. A reversed power source could damage the unit.

2. No connection should be made between input ground and the output.

3. These are step-down devices, the maximum output open voltage is

equal to the input voltage.

5. Exceeding the specified maximum output power could cause damage to the unit.

Connection Notes:

To comply with EN61000-4-5, a TVS should be installed before the input filter components. A 3.0SMCJ48A or SMCJ48A is recommended. The TVS max clamping voltage (@max peak pulse

60V. This will prevent any surge from exceeding the maximum input of the driver (65 VDC). Exceeding the maximum input rating could damage the driver.

Connection Notes:

This is a distributed (or two-stage) AC connection. In this configuration, the AC line in (90 to 264 VAC) is connected to the MPM-04S-12, a miniature 4W AC/DC power

supply. The MPM-04S-12 provides a tightly regulated 12 VDC output at 333 mA. The 12 VDC output powers the LED driver.

The two stage approach can simplify the safety approval process (most AC/DC power supplies on the market are approved to EN 60950) and may increase design flex-

ibility. Besides the output power, other specifications to consider when selecting the input AC/DC supply would include input range, safety approvals, PFC rating (which

may be needed for various system energy ratings) and operating temperature range.

Note: The output current adjustment circuit shown in both connection diagrams is discussed on page 4.