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ISL91134IIQ-EVZ
Evaluation Board
Description
The ISL91134 is an integrated boost with bypass switching
regulator for battery powered applications. The device provides
a power supply solution for products using one cell Li-ion or
Li-polymer battery. The device is capable of delivering up to
1.8A output current from V
IN
quiescent current is only 108μA in boost mode and 45μA in
forced bypass mode, which significantly reduces the standby
consumption. The ISL91134 evaluation board allows quick
evaluation of the high performance features of this regulator.
Specifications
The boards are designed to operate at the following operating
conditions:
• Input voltage rating from 2.35V to 5.4V
• Output current: up to 1.8A (V
• Forced bypass or auto bypass modes with a 38mΩ switch
• PFM mode at light-load currents
• 108µA quiescent current minimizes standby consumption in
boost mode
• 2.5MHz switching frequency
2.35V TO 5.4V
R
AN1957 Rev 0.00
September 5, 2014
= 3V and V
= 5V. The no-load
OUT
= 3V, V
= 5V)
IN
OUT
V
=
IN
L
1
0.47µH
LX
C
1
22µF
VIN
EN
RESET
1
PG
FIGURE 1. ISL91134 TYPICAL APPLICATION SCHEMATIC
Key Board Features
• Jumper selectable EN (Enabled/Disabled)
• Jumper selectable BYPS (Auto/Forced)
• Jumper selectable VSET (No offset/offset on V
• Connectors, test points, and jumpers for easy probing
References
•
ISL91134
Datasheet
Ordering Information
EVALUATION BOARD NUMBER
ISL91134IIQ-EVZ
V
OUT
VOUT
C
22µF
ISL91134
AUTO BYPASS
BYPS
FORCED BYPASS
V
OUT
VSEL
V
OUT
USER'S MANUAL
September 5, 2014
V
OPTION
OUT
5.0/5.2V (VSET L/H)
= 5V
2
HI
LO
© 2014 Renesas Electronics
AN1957
Rev 0.00
)
OUT
Page 1 of 6
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Related Manuals for Renesas ISL91134IIQ-EVZ
Summary of Contents for Renesas ISL91134IIQ-EVZ
- Page 1 • 2.5MHz switching frequency 2.35V TO 5.4V 0.47µH = 5V VOUT 22µF 22µF ISL91134 AUTO BYPASS BYPS RESET FORCED BYPASS VSEL FIGURE 1. ISL91134 TYPICAL APPLICATION SCHEMATIC AN1957 Rev 0.00 Page 1 of 6 September 5, 2014 © 2014 Renesas Electronics...
-
Page 2: Functional Description
ISL91134IIQ-EVZ Functional Description connected to the PVIN and GND headers on J1. The electronic load can be connected to the V and GND headers on J2 The ISL91134 implements a complete boost switching regulator, measure the input and output currents. Calculate efficiency with PWM controller, internal switches, references, protection based on these measurements. - Page 3 ISL91134IIQ-EVZ ISL91134 Evaluation Board FIGURE 3. TOP VIEW FIGURE 4. BOTTOM VIEW AN1957 Rev 0.00 Page 3 of 6 September 5, 2014...
- Page 4 ISL91134IIQ-EVZ ISL91134 Evaluation Board Schematic 0.47uF U1 ISL91134_EVZ CON6 VOUT VIN1 VOUT VOUT AGND VOUT1 330uF 22uF AGND1 AGND2 22uF 0.1uF PGND VSEL VSEL PGND1 PGND2 CON6 VSEL CON3 CON3 CON3 TABLE 1. ISL91134 EVALUATION BOARD BILL OF MATERIALS ITEM#...
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Page 5: Pcb Layout
ISL91134IIQ-EVZ PCB Layout FIGURE 5. TOP LAYER (RECOMMEND USING ISL91132 LAYOUT PLAN FOR ISL91134) FIGURE 6. BOTTOM LAYER AN1957 Rev 0.00 Page 5 of 6 September 5, 2014... -
Page 6: Typical Performance Curves
ISL91134IIQ-EVZ Typical Performance Curves 4.2V 4.2V 5.4V 3.6V 3.3V 3.6V 2.7V 2.7V 3.3V = 5.2V = 5V 0.001 0.01 0.001 0.01 FIGURE 8. EFFICIENCY vs LOAD CURRENT, V = 5.2V FIGURE 7. EFFICIENCY vs LOAD CURRENT, V = 5V FIGURE 9. FORCED BYPASS TO BOOST TRANSITION, 1A LOAD, V = 3V AN1957 Rev 0.00... -
Page 7: Corporate Headquarters
Renesas' products are provided only subject to Renesas' Terms and Conditions of Sale or other applicable terms agreed to in writing. No use of any Renesas resources expands or otherwise alters any applicable warranties or warranty disclaimers for these products. - Page 8 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Renesas Electronics ISL91134IIQ-EVZ...
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