SSL2101T/DB/FBCB120V,598 NXP Semiconductors, SSL2101T/DB/FBCB120V,598 Datasheet - Page 9

• Manufacturer Part Number: SSL2101T/DB/FBCB120V,598
• Description: BOARD EVAL LED DRIVER SS2101
• Manufacturer: NXP Semiconductors
• Type: DC/DC Switching Converters, Regulators & Controllersr

Specifications of SSL2101T/DB/FBCB120V,598

• Current - Output / Channel: 400 mA ~ 800 mA
• Outputs And Type: 1, Isolated
• Voltage - Output: 9 ~ 23 V
• Features: Dimmable, TRIAC Dimmable
• Voltage - Input: 120VAC
• Utilized Ic / Part: SSL2101
• Input Voltage: 120 V
• Board Size: 103 mm x 50 mm x 20 mm
• Maximum Operating Temperature: + 100 C
• Minimum Operating Temperature: - 40 C
• Operating Supply Voltage: 8.5 V to 40 V
• Product: Power Management Modules
• Dimensions: 103 mm x 50 mm x 20 mm
• For Use With/related Products: SSL2101T
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 568-4812

NXP Semiconductors
UM10341
User manual
Two other switches are referred to as the weak bleeder (pin WBLEED) and the strong
bleeder (pin SBLEED). When the voltage on these pins is below a certain value (typically
52 V) the SBLEED switch closes, providing a current path that loads the dimmer during
zero voltage crossing. This resets the dimmer timer. When the voltage on either of these
pins is above 52 V, and the voltage on the ISENSE pin is below −100 mV, the weak
bleeder switch closes. This current is boosted using Q3 and it provides a current path that
loads the dimmer when the converter draws insufficient current to stabilize the dimmer
latching. While the strong bleeder will always switch, the weak-bleeder will not activate
until the output power drops below 8 W. This happens when the LEDs are dimmed, or
when the maximum LED power is tuned below 8 W.
bleeder voltage versus time in dimmed and undimmed position (low voltage = active).
This board is optimized to work with a power factor above 0.9. In order to achieve this, the
converter operates in constant t
capacitor C6. Due to this configuration, the circuit has a resistive input current behavior
during un-dimmed operation (see Input in
not only must the dimmer latch and hold current be maintained, but a damper must be
added to dampen the inrush current and to dissipate the electric power that was stored in
Fig 6.
Fig 7.
Dimmed bleeder operation
Undimmed bleeder operation
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 3 February 2011
WBLEED
WBLEED
on
mode. The output power of the converter is buffered by
linput
linput
SBLEED
V
V
Figure
CC
CC
SSL2101 12 W mains dimmable LED driver
7). During dimmed operation however,
Figure 6
and
Figure 7
SBLEED
UM10341
© NXP B.V. 2011. All rights reserved.
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