Datasheet

MAX15059 Evaluation Kit
Evaluates: MAX15059A/MAX15059B
2 ______________________________________________________________________________________
Quick Start
Required Equipment
• MAX15059 EV kit
• 2.8V to 5.5V, 1A DC power supply
• 0 to 5mA adjustable load rated for at least 76V
• Digital multimeter (DMM)
Warning: Voltages exceeding 42V may exist on the
VOUT, APD, MOUT, and PGND PCB pads.
Procedure
The EV kit is fully assembled and tested. Follow the
steps below to verify board operation. Caution: Do not
turn on the power supply until all connections are
completed.
1) Verify that a shunt is installed on jumper JU1
(70V output).
2) Verify that a shunt is installed on pins 1-2 of jumper
JU2 (enabled).
3) Verify that a shunt is not installed on jumper JU3
(APD current limit is programmed by R5).
4) Connect the adjustable load to the APD and SGND
PCB pads.
5) Connect the power supply to the VIN pad and the
power-supply ground to the PGND pad.
6) Connect the DMM across the APD and SGND
PCB pads.
7) Turn on the power supply and set it to 3.3V.
8) Verify that the DMM reads approximately 70V.
Detailed Description of Hardware
The MAX15059 EV kit demonstrates the MAX15059
in a small, 16-pin TQFN package with internal power
switch, current monitor, and adjustable current-limiting
circuit features. The circuit’s PWM step-up DC-DC
converter is designed for APD biasing, switches at
400kHz, and is configured to deliver approximately
70V, and 0 to 4mA of current to the APD output. The
output voltage can be reconfigured from VIN + 5V to
76V by replacing resistor R1, or adjusting the CNTRL
voltage. The EV kit demonstrates the IC’s APD fast
current-limit, UVLO, and thermal-shutdown features.
The converter circuit’s PCB footprint is 8mm x 18mm.
The EV kit operates from a 2.8V to 5.5V DC supply volt-
age and provides up to 4mA at the APD output. The
EV kit’s APD load-simulator circuit is used for current
monitoring and step-response measurements. The cir-
cuit is comprised of MOSFET N1, resistors R7, R8, R9,
and test points TP1, TP2, and TP3 (SGND). Test point
TP4 provides access to the IC’s BIAS signal. Voltages
exceeding 42V may exist on TP4. Additionally, bulk
capacitor C9 is provided in case long connecting cables
are used to power the EV kit during lab evaluation.
Capacitor C9 is not required in a typical design.
SHDN and Enable
The EV kit features a jumper to enable and disable
U1. Jumper JU2 disables the EV kit when the shunt is
installed on pins 2-3. Installing the shunt on pins 1-2
enables the EV kit. Refer to the Shutdown section in the
MAX15059 IC data sheet for more information. See Table
1 for jumper JU2 settings.
Component List (continued)
*EP = Exposed pad.
Note: Indicate that you are using the MAX15059 when contacting these component suppliers.
Component Suppliers
DESIGNATION QTY DESCRIPTION
U1 1
APD boost converter
(16 TQFN-EP*)
Maxim MAX15059AETE+
DESIGNATION QTY DESCRIPTION
— 3 Shunts
— 1
PCB: MAX15059 EVALUATION
KIT+
SUPPLIER PHONE WEBSITE
AVX Corporation 843-946-0238 www.avxcorp.com
Coilcraft, Inc. 847-639-6400 www.coilcraft.com
Diodes Inforporated 805-446-4800 www.diodes.com
Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com
Vishay 402-563-6866 www.vishay.com