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General Description

The MAX16840 evaluation kit (EV kit) demonstrates the

MAX16840 HBLED driver IC used for solid-state lighting

(SSL) applications. The EV kit is configured in a buck-

boost topology providing an output power of 5.5W for 3

to 5 LEDs. The IC is designed for standard multifaceted-

reflector (MR) applications. The EV kit’s typical input

power is 6.7W at 12V AC and features a power-factor

correction of 0.9 (typ).

The EV kit is a fully assembled and tested surface-mount

PCB designed and optimized to accommodate an MR16

application form factor. The EV kit is dimmable with some

electronic transformers and trailing-edge dimmer com-

bination and some magnetic transformers and leading-

edge dimmer combination.

Features

S Input Voltage Ranges

9V AC to 13.2V AC from AC Source or Magnetic

Transformers

9V DC to 18V DC

Output of Several Electronic Transformers

S Drives 3 to 5 Series HBLEDs

S 36V Overvoltage Protection

S 5.5W Output Power

S Demonstrates IC Power-Factor Correction

S Proven PCB Layout

S Fully Assembled and Tested

DESIGNATION QTY DESCRIPTION

AC1, AC2,

LED+, LED-,

LED-B

0 Not installed, test points

C1, C8 2

0.33FF Q10%, 25V X7R

ceramic capacitors (0805)

Murata GRM21BR71E334K

C2, C9 2

10FF Q10%, 25V X7R ceramic

capacitors (1206)

Taiyo Yuden TMK316AB7106K

C3 1

2.2FF Q10% 6.3V X7R ceramic

capacitor (0603)

AVX 06036C225KAT2A

C4 1

0.1FF Q10%, 50V X7R ceramic

capacitor (0603)

Murata GRM188R71H104K

C5 1

1500pF Q10%, 50V X7R

ceramic capacitor (0603)

Murata GRM188R71H152KA

C6 1

220pF Q5%, 50V C0G ceramic

capacitor (0603)

Murata GRM1555C1H221J

C7 1

2.2FF Q10%, 16V X7R ceramic

capacitor (1206)

Murata GRM31MR71C225K

DESIGNATION QTY DESCRIPTION

C10 0

Not installed, ceramic capacitor

(1206)

C11 1

1000pF Q5%, 50V C0G

ceramic capacitor (0402)

Murata GRM1555C1H102J

D1 1

3A, 60V Schottky diode (SMA)

Diodes Inc. B360A-13-F

D2 1

Schottky bridge rectifier diode

(HD DIP)

Central Semi CBRHDSH1-40L

D3 1

36V zener diode (SOD323)

Fairchild MM3Z36VC

(Top Mark: ZV)

D4 1

4.3V zener diode (SOD123)

Fairchild MMSZ5229B

(Top Mark: D4)

F1 1 1.75A, 63V fuse

L1 1

27FH, 3.1A inductor

Würth 7447798271

L2 1

3.3FH, 1A inductor

TDK MLP2520S3R3S

MAX16840 Evaluation Kit

Evaluates: MAX16840

_________________________________________________________________ Maxim Integrated Products 1

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

Component List

19-5925; Rev 0; 6/11

Ordering Information appears at end of data sheet.

Summary of content (10 pages)

PAGE 1
9-5925; Rev 0; 6/11 MAX16840 Evaluation Kit Evaluates: MAX16840 General Description Features The MAX16840 evaluation kit (EV kit) demonstrates the MAX16840 HBLED driver IC used for solid-state lighting (SSL) applications. The EV kit is configured in a buckboost topology providing an output power of 5.5W for 3 to 5 LEDs. The IC is designed for standard multifacetedreflector (MR) applications. The EV kit’s typical input power is 6.7W at 12V AC and features a power-factor correction of 0.9 (typ).
PAGE 2
MAX16840 Evaluation Kit Evaluates: MAX16840 Component List (continued) DESIGNATION QTY L3 1 Q1 1 Q2 1 DESCRIPTION DESIGNATION QTY R5 1 10kI Q5% resistor (0603) R6 1 22V, 400A varistor (1210) R7 1 10kI Q1% resistor (0603) R8 1 340kI Q1% resistor (0603) R9, R10 2 12kI Q5% resistors (0402) R11 1 1.5kI, 1/4W resistor (0805) Panasonic-ECG ERJ-P06J152V 1 0.
PAGE 3
MAX16840 Evaluation Kit Evaluates: MAX16840 Detailed Description of Hardware The MAX16840 EV kit demonstrates the MAX16840 HBLED driver IC. The IC is an average current-modecontrol HBLED driver IC for step-down (buck), step-up (boost), and step-down/step-up (buck-boost) topologies in low-voltage SSL applications. The IC has an integrated 0.2I (max), 48V switching MOSFET that allows the device to be used in lighting applications for MR16 and other SSL applications for power levels up to 10W.
PAGE 4
MAX16840 Evaluation Kit Evaluates: MAX16840 Table 1. Electronic Transformers Tested RATED INPUT VOLTAGE AND POWER MEASURED (pF) PERFORMANCE (V)* LED OUTPUT VOLTAGE (V) Lightech LVT60 120V, 60W 0.963 108 to 132 25.1 Lightech LET60 120V, 60W Lightech LET75 120V, 75W MANUFACTURER (MODEL NAME) LED OUTPUT CURRENT (mA) LIGHTECH** 108 to 213 120 to 221 132 to 225 108 to 215 0.96 108 to 132 25.8 120 to 223 132 to 225 108 to 217 0.95 108 to 132 25.
PAGE 5
MAX16840 Evaluation Kit Evaluates: MAX16840 Table 1. Electronic Transformers Tested (continued) RATED INPUT VOLTAGE AND POWER MEASURED (pF) PERFORMANCE (V)** LED OUTPUT VOLTAGE (V) Osram HALOTRONIC HTN 75/230-240 230V to 240V, 20W to 75W 0.88 207 to 254 25.4 Osram HALOTRONIC HTN 70/230-240 230V to 240V, 20W to 70W 0.942 Osram HALOTRONIC HTN 105/230-240 230V to 240V, 35W to 105W 0.91 Osram ET-PARROT 105 220V to 240V, 35W to 105W 0.89 Osram ET-P 60 220V to 240V, 20W to 60W 0.
PAGE 6
MAX16840 Evaluation Kit Evaluates: MAX16840 INPUT CURRENT 500mA/div INPUT CURRENT 2A/div 10ms/div 2ms/div Figure 1. Input Current Waveform Using a Magnetic Transformer Figure 2. Input Current Waveform Using an Electronic Transformer with L2 Shorted INPUT CURRENT 2A/div 2ms/div Figure 3.
PAGE 7
MAX16840 Evaluation Kit Evaluates: MAX16840 Figure 4.
PAGE 8
MAX16840 Evaluation Kit Evaluates: MAX16840 Figure 5. MAX16840 EV Kit Component Placement Guide— Component Side Figure 7. MAX16840 EV Kit PCB Layout—Solder Side Figure 6. MAX16840 EV Kit PCB Layout—Component Side Figure 8.
PAGE 9
MAX16840 Evaluation Kit Evaluates: MAX16840 Ordering Information PART TYPE MAX16840EVKIT# EV Kit #Denotes RoHS compliant.
PAGE 10
MAX16840 Evaluation Kit Evaluates: MAX16840 Revision History REVISION NUMBER REVISION DATE 0 6/11 DESCRIPTION Initial release PAGES CHANGED — Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.