Page 1
USER’S MANUAL
FIGURE 1. TOP VIEW OF ISL78010EVAL1Z
FIGURE 2. BOTTOM VIEW OF ISL78010EVAL1Z
ISL78010EVAL1Z
Evaluation Board
The ISL78010EVAL1Z evaluation board is u s e d to
demonstrate the performance of the ISL78010 IC used
for automotive grade TFT -L CD power supply solution.
The top side and the bottom side of ISL78010EVAL1Z
are shown in Figures 1 and 2, respectively. This board
consists of power and load connectors for source and
load side, external passive components, and the place
holders reserved for the following ap plications:
1. Place holder for second stage positive charge pump
for high voltage application at V
2. Place holder for additional external compensation.
3. Place holder for snubber circuits to improve EMI
performance.
ON
rail.
AN1523
Rev 0.00
January 14, 2010
Reference Documents
• ISL 78010 Data Sheet (FN6501)
Key Features
• 2A current FET
•3V to 5V input
• Up to 20V boost output
• 1% regulation on boost output
•V
LOGIC-VBOOST-VOFF-VON
V
LOGIC-VOFF-VBOOST-VON
• Programmable sequence delay
• Fully fault protected
• Thermal shutdown
• Internal soft-start
• 32 Ld 5x5 TQFP packages
• Pb-free plus anneal available (RoHS compliant)
or
sequence control
Recommended Equipment
The following materials are recommended to perform
testing:
• 0V to 10V Power Supply with at least 5A source
current capability
• Electronic Loads capable of sinking curr ent u p to 5A
• Digital Multimeters (DMMs)
• 100MHz quad-trace oscilloscope
The input voltage range is from 3V to 5V, and the
maximum output voltage on main boost rail is 20V.
Quick Setup Guide
1. Set power source to be 5V and with 0.5A current
limiting.
2. Apply 5V to the input: J1 (V
is input-. Check the power source to make sure that
no current limiting occurs.
3. Release the input power source’ s current limiting to
5A.
4. Turn off the input power source. Set the electronic
load to constant current load of 100mA, connect the
electronic load to the V
output+, J8 (PGND) is output-.
5. Turn on the input power source, verify the output
voltage is around 12V for V
6. Verify that the ripple voltage (about 1MHz
frequency) for the V
7. Verify the v oltage at V
20V.
8. Verify the voltage at V
is 2.5V.
9. Verify the voltage at V
is -8V.
BST
voltage is around 50mV.
BST
ON
LOGIC
OFF
) is input+, J2 (V
IN+
output: J6 (V
(J6, J8).
BST
rail (between J3 and J7) is
rail (between J4 and J7)
rail (between J5 and J7),
BST
IN-
) is
)
AN1523 Rev 0.00 Page 1 of 8
January 14, 2010
Page 2
ISL78010EVAL1Z
FIGURE 3. QUICK SET UP TO MEASURE THE V
BST
VOLTAGE
Efficiency
Output Power
In p u t Power
------------------------------------
P
OUT
P
IN
----------------
V
OUTIOUT
V
INIIN
----------------------------------------
===
(EQ. 1)
FIGURE 4. EFFICIENCY MEASUREMENT SET UP
FIGURE 5. OUTPUT RIPPLE/NOISE MEASUREMENT
Quick Start to Measure the
Boost Output Voltage
The evaluation board can be evaluated simply . Figure 3
shows the quick configuration to measure the boost
rail output voltage. After powering on the input power
supply, the oscilloscope probes can be placed at V
BST
pin to check the output voltage, and at LX pin to check
the phase node voltage.
Efficiency Measurement
Figure 4 shows the efficiency measurement set up for the
ISL78010EVAL1Z Eval Board. The voltage and current
meter can be used to measure input/output voltage and
current. In order to obtain an accurate measurement and
prevent the voltage drop of PCB or wire trace, the
voltage meter must be close to the input/output
terminals.
Output Ripple/Noise
Measurement
The total noise is equal to the sum of the ripple and
noise components. Simple steps should be taken to
assure that there is minimum pickup noise due to the
high frequency events, which can be magnified by the
large ground loop formed by the oscilloscope probe
ground. This means that even a few inches of ground
wire on the oscilloscope probe may result in hundreds
of millivolts of noise spikes when improperly routed or
terminated. This effect can be overcome by using the
short loop measurement method to minimize the
measurement loop area for reducing the pickup noise.
The short loop measurement method is shown in
Figure 5. For ISL78010EVAL1Z evaluation board, the
output ripple/noise measurement point is located at
terminal.
the C
9
The efficiency equation is shown in Equation 1:
As shown in Figure 4, the measuring point for the input
voltage meter is at the C
terminal, and the measuring
10
point for the output voltage meter is at the C9 terminal.
AN1523 Rev 0.00 Page 2 of 8
January 14, 2010
Page 3
AN1523 Rev 0.00 Page 3 of 8
January 14, 2010
ISL78010EVAL1Z
ISL78010EVAL1Z Eval Board Application Diagram
Page 4
ISL78010EVAL1Z
ISL78010EVAL1Z Eval Board Bill of Materials (BOM)
DEVICE # DESCRIPTION MANUFACTURER
Cp, C0, C8 CAP, SMD, 0603, 1000pF, 16V, 10%, X7R,
RoHS
C9, C11, C12, C14, C22, C24,
C25, C41
C23 CAP, SMD, 0603, 1800pF, 50V, 10%, X7R,
C4 CAP, SMD, 0603, 220pF, 50V, 10%, X7R,
C16 CAP, SMD, 0603, 0.022µF, 25V, 10%, X7R,
C7 CAP, SMD, 0603, 0.22µF, 16V, 10%, X7R,
C6, C10 CAP, SMD, 0805, 4.7µF, 16V, 10%, X5R,
C1, C2, C3 CAP , SMD, 1206, 10µF, 25V, 10%, X5R, RoHS VENKEL C1206X5R250-106KNE
C20 CAP, SMD, 1206, 0.47µF, 25V, 10%, X7R,
C31 CAP, SMD, 1206, 4.7µF, 16V, 10%, X7R,
C15 CAP, SMD, 1210, 1µF, 50V, 10%, X7R, RoHS VENKEL C1210X7R500-105KNE
L1 COIL-PWR INDUCTOR, SMD, 7.3X6.8mm,
J1-J8 CONN-TURRET, TERMINAL POST, TH, RoHS KEYSTONE 1514-2
TP1-TP3 CONN-MINI TEST POINT, VERTICAL, WHITE,
D11, D21 DIODE-SCHOTTKY, SMD, SOT23, 3P, 30V,
D1 DIODE-SCHOTTKY, SMD, POWERMITE, 20V,
U1 IC-TFT-L CD POWER SUPPLY, 32P, TQFP, 5x5,
Q1 TRANSIST-MOS, P-CHANNEL, SMD,
Q2 TRANSISTOR-NPN, SMD, SOT-23, 40V,
Q3 TRANSISTOR-PNP, SMD, SOT-23, 40V,
Q4 TRANSIST-MOS, P-CHANNEL, SMD,
Q5 TRANSISTOR, PNP, SMD, SOT23, -30V, -1A,
R102, R104 RES, SMD, 0603, 1, 1/10W, 1%, TF, RoHS VENKEL CR0603-10W-1R00FT
R6 RES, SMD, 0603, 10, 1/10W, 1%, TF, RoHS VENKEL CR0603-10W-10R0FT
R10, R14, R101, R111 RES, SMD, 0603, 0, 1/10W, TF, RoHS VENKEL CR0603-10W-000T
R7, R8 RES, SMD, 0603, 10k, 1/10W, 1%, TF, RoHS VENKEL CR0603-10W-1002FT
R9 RES, SMD, 0603, 1M, 1/10W, 1%, TF, RoHS VENKEL CR0603-10W-1004FT
CAP, SMD, 0603, 0.1µF, 50V, 10%, X7R,
RoHS
RoHS
RoHS
RoHS
RoHS
RoHS
RoHS
RoHS
6.8µH, 20%, 2.8A, RoHS
RoHS
200mA, DUAL DIODE
1A, RoHS
RoHS
SUPERSOT3, -20V, -2.4A, RoHS
200mA, 350mW, RoHS
200mA, 350mW, RoHS
SUPERSOT3, -30V, -2A, RoHS
500mW, RoHS
VENKEL C0603X7R160102KNE
TDK C1608X7R1H104K
MURATA GRM39X7R182K050AQ
MURATA GRM188R71H221KA01D
MURATA GRM39X7R223K025AQ
TDK C1608X7R1C224K
MURATA GRM21BR61C475KA88L
PANASONIC ECJ-3YB1E474K
MURATA GRM31CR71C475KA01L
TDK RLF7030T-6R8M2R8
KEYSTONE 5002
FAIRCHILD BAT54S
ON SEMI MBRM120ET1G
INTERSIL ISL78010ANZ
FAIRCHILD FDN304P
FAIRCHILD MMBT3904
FAIRCHILD MMBT3906
FAIRCHILD FDN360P
FAIRCHILD FMMT549
MANUFACTURER
PART NUMBER
AN1523 Rev 0.00 Page 4 of 8
January 14, 2010
Page 5
ISL78010EVAL1Z
ISL78010EVAL1Z Eval Board Bill of Materials (BOM) (Continued)
MANUFACTURER
DEVICE # DESCRIPTION MANUFACTURER
R22 RES, SMD, 0603, 165k, 1/ 10W, 1%, TF , RoHS VENKEL CR0603-10W-1653FT
R11, R21, R41 RES, SMD, 0603, 20k, 1/10W, 1%, TF, RoHS VENKEL CR0603-10W-2002FT
R42 RES, SMD, 0603, 21.5k, 1/10W, 1%, TF,
RoHS
R23 RES, SMD, 0603, 3.01k, 1/10W, 1%, TF,
RoHS
R12 RES, SMD, 0603, 316k, 1/ 10W, 1%, TF , RoHS VENKEL CR0603-10W-3163FT
R2 RES, SMD, 0603, 46.4k, 1/10W, 1%, TF,
RoHS
R43 RES, SMD, 0603, 499, 1/10W, 1%, TF , RoHS VENKEL CR0603-10W-4990FT
R1 RES, SMD, 0603, 4.99k, 1/10W, 1%, TF,
RoHS
R13 RES, SMD, 0603, 6.98k, 1/10W, 1%, TF,
R4 RES, SMD, 0603, 75.0k, 1/10W, 1%, TF,
Bottom four corners. BUMPONS, 0.44inW x 0.20inH, DOMETOP,
Place assy in bag. BAG, STATIC, 5x8, ZIP LOC INTERSIL 212403-013
CS1, C5, C13, C42, C102,
C103
D12 Do Not Populate Or Purchase (DNP)
Q111 Do Not Populate Or Purchase (DNP)
RS1, R5, R100, R103, R105,
R114
RoHS
RoHS
BLACK
Do Not Populate Or Purchase (DNP)
Do Not Populate Or Purchase (DNP)
VENKEL 9C06031A2152FKHFT
VENKEL CR0603-10W-3011FT
VENKEL CR0603-10W-4642FT
VENKEL CR0603-10W-4991FT
VENKEL CR0603-10W-6981FT
VENKEL CR0603-10W-7502FT
3M SJ-5003SPBL
PART NUMBER
AN1523 Rev 0.00 Page 5 of 8
January 14, 2010
Page 6
ISL78010EVAL1Z
ISL78010EVAL1Z Board Layout
FIGURE 6. TO P COMPONENTS
AN1523 Rev 0.00 Page 6 of 8
January 14, 2010
FIGURE 7. TOP LAYER ETCH
Page 7
ISL78010EVAL1Z
ISL78010EVAL1Z Board Layout (Continued)
FIGURE 8. BOTTOM LAYER COMPONENTS (MIRROR)
AN1523 Rev 0.00 Page 7 of 8
January 14, 2010
FIGURE 9. BOTTOM LAYER ETCH (MIRROR)
Page 8
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