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1. General description

The SSL2103 is a Switched Mode Power Supply (SMPS) controller IC that operates in

combination with a phase cut dimmer directly from the rectified mains. It is designed to

drive LED devices. The device includes a circuit to allow direct start-up from the rectified

mains voltage.

For dimmer applications, an integrated dedicated circuitry optimizes the dimming curve.

• SSL2101: fully integrated LED driver for lamps up to 10 W

• SSL2102: fully integrated LED driver for lamps up to 25 W

• SSL2103: gives the application designer flexibility to:

– Use an external power switch to allow the IC to provide any power

– Use an external bleeder transistors to provide extended dimmer interoperability

2. Features and benefits

 Easy migration to existing lighting control infrastructure

 Supports most available dimming solutions

 Optimized efficiency with valley switching managed by a built-in circuitry

 Demagnetization detection

 OverTemperature Protection (OTP)

 Short-Winding Protection (SWP) and OverCurrent Protection (OCP)

 Internal V

generation allowing start-up from the rectified mains voltage

 Natural dimming curve by logarithmic correction, down to 1 %

 Suitable for flyback and buck applications

3. Applications

 SSL applications with various power requirements

 LED modules such as LED spots and down-lights

 LED strings suitable for retail displays, etc.

SSL2103

Dimmable Greenchip controller for LED lighting

Rev. 2.2 — 5 December 2011 Product data sheet

Summary of content (21 pages)

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SSL2103 Dimmable Greenchip controller for LED lighting Rev. 2.2 — 5 December 2011 Product data sheet 1. General description The SSL2103 is a Switched Mode Power Supply (SMPS) controller IC that operates in combination with a phase cut dimmer directly from the rectified mains. It is designed to drive LED devices. The device includes a circuit to allow direct start-up from the rectified mains voltage. For dimmer applications, an integrated dedicated circuitry optimizes the dimming curve.
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SSL2103 NXP Semiconductors Dimmable Greenchip controller for LED lighting 4. Quick reference data Table 1.
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SSL2103 NXP Semiconductors Dimmable Greenchip controller for LED lighting 6. Block diagram SB_DRV ISENSE 9 WB_DRV 1 HVDET 2 14 BLEEDER VCC 3 13 SUPPLY DRAIN VALLEY 10 GND 4 LOGIC AUX 100 mV 12 PWR_DRV Stop RC 7 OSCILLATOR Low freq Blank THERMAL SHUTDOWN 11 PROTECTION LOGIC BRIGHTNESS RC2 5 6 FREQUENCY REDUCTION CIRCUIT POWER - UP RESET SOURCE 0.5 V 1.5 V PWMLIMIT 8 PWM LIMIT CIRCUIT Overcurrent Short-winding protection SSL2103 001aam651 Fig 1.
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SSL2103 NXP Semiconductors Dimmable Greenchip controller for LED lighting 7. Pinning information 7.1 Pinning SB_DRV 1 14 HVDET WB_DRV 2 13 DRAIN VCC 3 12 PWR_DRV GND 4 BRIGHTNESS 5 RC2 6 RC 7 SSL2103 11 SOURCE 10 AUX 9 ISENSE 8 PWMLIMIT 001aam652 Fig 2. Pin configuration SO14 7.2 Pin description SSL2103 Product data sheet Table 3.
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SSL2103 NXP Semiconductors Dimmable Greenchip controller for LED lighting 8. Functional description The SSL2103 is an LED driver IC that operates directly from the rectified mains. The SSL2103 uses on-time mode control and frequency control to control the LED brightness. The BRIGHTNESS and PWMLIMIT input of the IC can be used to control the LED light output in combination with an external dimmer. The PWMLIMIT input can also be used for Thermal Lumen Management (TLM) and for precision LED current control.
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SSL2103 NXP Semiconductors Dimmable Greenchip controller for LED lighting RC OSCILLATOR R2 10 kΩ 5V Comparator 24 μA BRIGHTNESS C1 330 pF R1 220 kΩ RC2 rc_threshold V V 001aam657 Fig 3. Brightness control block A typical RC waveform is shown in Figure 4. The RC switch-over threshold is controlled by the BRIGHTNESS pin. To ensure that the capacitor can be charged within the charge time, the value of the oscillator capacitor should be limited to 1 nF.
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SSL2103 NXP Semiconductors Dimmable Greenchip controller for LED lighting The SB_DRV output is activated when the maximum voltage on pin HVDET is below the Vth(SBLEED) level (52 V typically). The WB_DRV output is activated as soon as the voltage on pin ISENSE exceeds the Vth(high)(ISENSE) level (100 mV typically). The WB_DRV output is deactivated when the ISENSE voltage drops below the Vth(low)(ISENSE) level (250 mV typically).
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SSL2103 NXP Semiconductors Dimmable Greenchip controller for LED lighting primary stroke secondary stroke secondary ringing drain valley secondary stroke A RC oscillator B regulation level 014aab110 A: Start of new cycle with valley switching. B: Start of new cycle in a classic PWM system. Fig 6. Signals for valley switching, flyback configuration Figure 7 shows a typical curve for a reflected output voltage N at an output voltage of 80 V.
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SSL2103 NXP Semiconductors Dimmable Greenchip controller for LED lighting 8.6 Demagnetization The system operates in discontinuous conduction mode if the AUX pin is connected. As long as the secondary stroke has not ended, the oscillator will not start a new primary stroke. During the first tsup(xfmr_ring) seconds, demagnetization recognition is suppressed. This suppression may be necessary in applications where the transformer has a large leakage inductance and at low output voltages. 8.
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SSL2103 NXP Semiconductors Dimmable Greenchip controller for LED lighting 9. Limiting values Table 4. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). All voltages are measured with respect to ground; positive currents flow into the device. Symbol Parameter Conditions supply voltage continuous Min Max Unit [1] 0.4 +28 V [1] 0.4 +3 V Voltages VCC VRC voltage on pin RC VRC2 voltage on pin RC2 0.4 +3 V VBRIGHTNESS voltage on pin BRIGHTNESS 0.
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SSL2103 NXP Semiconductors Dimmable Greenchip controller for LED lighting 11. Characteristics Table 6. Characteristics Tamb = 25 C; no overtemperature; all voltages are measured with respect to ground; currents are positive when flowing into the IC; VCC = 20 V and PWMLIMIT and BRIGHTNESS pins are disconnected unless otherwise specified. Typical frequency 100 kHz. Symbol Parameter Conditions Min Typ Max Unit ICC supply current normal operation; bleeders disconnected; VDRAIN = 60 V; - 1.
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SSL2103 NXP Semiconductors Dimmable Greenchip controller for LED lighting Table 6. Characteristics …continued Tamb = 25 C; no overtemperature; all voltages are measured with respect to ground; currents are positive when flowing into the IC; VCC = 20 V and PWMLIMIT and BRIGHTNESS pins are disconnected unless otherwise specified. Typical frequency 100 kHz. Symbol Parameter Conditions Min Typ Max Unit 25 - 18 A maximum duty cycle threshold VBRIGHTNESS = 3 V - 2.
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SSL2103 NXP Semiconductors Dimmable Greenchip controller for LED lighting 014aab112 100 fosc (kHz) fmax 80 60 40 20 fmin 0 0 1 2 3 VBRIGHTNESS (V) Fig 8. Typical frequency as a function of voltage on pin BRIGHTNESS (with RC value given in Figure 3) 014aab113 12 ton (μs) 8 4 0 0 1 2 3 VPWMLIMIT (V) VBRIGHTNESS = 3 V Fig 9.
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SSL2103 NXP Semiconductors Dimmable Greenchip controller for LED lighting 014aab114 120 ton (μs) 80 40 0 0 1 2 3 VPWMLIMIT (V) VBRIGHTNESS = 1 V Fig 10. Turn-on time as a function of voltage on pin PWMLIMIT (with RC value given in Figure 3) SSL2103 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2.2 — 5 December 2011 © NXP B.V. 2011. All rights reserved.
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SSL2103 NXP Semiconductors Dimmable Greenchip controller for LED lighting 12. Application information MAINS VCC VCC SB_DRV WB_DRV VCC HVDET GND DRAIN RC RC2 BRIGHTNESS PWMLIMIT SSL2103 PWR_DRV SOURCE AUX TLM VCC ISENSE Dim range 001aam653 Fig 11. Buck configuration for SSL2103 SSL2103 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2.2 — 5 December 2011 © NXP B.V. 2011. All rights reserved.
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SSL2103 NXP Semiconductors Dimmable Greenchip controller for LED lighting MAINS SB_DRV WB_DRV VCC HVDET GND DRAIN RC RC2 BRIGHTNESS PWMLIMIT SSL2103 PWR_DRV SOURCE AUX ISENSE Precision current 001aam654 Fig 12. Flyback configuration for SSL2103 Further application information can be found in the SSL2103 application notes. SSL2103 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 2.2 — 5 December 2011 © NXP B.V. 2011. All rights reserved.
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SSL2103 NXP Semiconductors Dimmable Greenchip controller for LED lighting 13. Package outline SO14: plastic small outline package; 14 leads; body width 3.9 mm SOT108-1 D E A X c y HE v M A Z 8 14 Q A2 A (A 3) A1 pin 1 index θ Lp 1 L 7 e detail X w M bp 0 2.5 5 mm scale DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT A max. A1 A2 A3 bp c D (1) E (1) e HE L Lp Q v w y Z (1) mm 1.75 0.25 0.10 1.45 1.25 0.25 0.49 0.36 0.25 0.19 8.
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SSL2103 NXP Semiconductors Dimmable Greenchip controller for LED lighting 14. Revision history Table 7. Revision history Document ID Release date Data sheet status Change notice Supersedes SSL2103 v.2.2 20111205 Product data sheet - SSL2103 v.2.1 Modifications: • • • • GreenChip trademark has been added. Section 1 “General description” has been updated. Section 2 “Features and benefits” has been updated. Section 3 “Applications” has been updated. SSL2103 v.2.
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SSL2103 NXP Semiconductors Dimmable Greenchip controller for LED lighting 15. Legal information 15.1 Data sheet status Document status[1][2] Product status[3] Definition Objective [short] data sheet Development This document contains data from the objective specification for product development. Preliminary [short] data sheet Qualification This document contains data from the preliminary specification. Product [short] data sheet Production This document contains the product specification.
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SSL2103 NXP Semiconductors Dimmable Greenchip controller for LED lighting Quick reference data — The Quick reference data is an extract of the product data given in the Limiting values and Characteristics sections of this document, and as such is not complete, exhaustive or legally binding. Non-automotive qualified products — Unless this data sheet expressly states that this specific NXP Semiconductors product is automotive qualified, the product is not suitable for automotive use.
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SSL2103 NXP Semiconductors Dimmable Greenchip controller for LED lighting 17. Contents 1 2 3 4 5 6 7 7.1 7.2 8 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 8.9 9 10 11 12 13 14 15 15.1 15.2 15.3 15.4 16 17 General description . . . . . . . . . . . . . . . . . . . . . . 1 Features and benefits . . . . . . . . . . . . . . . . . . . . 1 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Quick reference data . . . . . . . . . . . . . . . . . . . . . 2 Ordering information . . . . . . . . . . . . . .