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User manual Rev. 1.1 — 15 October 2014 4 of 24

NXP Semiconductors

UM10812

SSL5301DB1233 230 V 36 W LED driver demo board

2. Safety warning

The board must be connected to mains voltage. Avoid touching the demo board while it is

connected to the mains voltage. An isolated housing is obligatory when used in

uncontrolled, non-laboratory environments. Galvanic isolation of the mains phase using a

variable transformer is always recommended. Figure 1

shows the symbols that identify

the isolated and non-isolated devices.

3. Specifications

[1] OVP is a latched protection. It is valid during start-up or during operation when no LEDs are connected.

[2] OSP is valid if an output short event of the LEDs occurs during start-up or during operation.

a. Isolated b. Not isolated

Fig 1. Isolation symbols

019aab173

019aab174

Table 1. SSL5301DB1233 demo board specifications

Symbol Parameter Value

mains

AC mains voltage supply 230 V (AC); 10 %

nominal input power 36 W

nominal output power 32.5 W

LED

output voltage (LED voltage) 48 V (range is 38 V to 52 V)

LED

output current (LED current) 675 mA to 725 mA

(nominal 700 mA)

ripple

output ripple current ±30 %

I

LED

/V

mains

line regulation < 0.5 % for

mains

= 230 V 10 %

I

LED

/V

LED

load regulation < 2.5 mA/V

 efficiency > 90 %

PF power factor > 0.96

THD total harmonic distortion < 10 %

switching frequency 60 kHz

PCB dimensions L  W  H120mm 50 mm  30 mm

OVP

[1]

OverVoltage Protection (OVP)

or open string protection

LED

>55V

OSP

[2]

Output Short Protection (OSP) V

LED

=0V

1 2 3 4 5 6 7 8 9 ... 23 24

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