19-1211; Rev 0; 3/97
MAX1 6 3 0 /MAX1 6 3 1 /MAX1 6 3 2 Eva lu a t io n Kit s
Evluate:0/MAX1632
_______________Ge n e ra l De s c rip t io n
____________________________Fe a t u re s
The MAX1630/MAX1631/MAX1632 evaluation kits (EV
kits) each consist of one of three preassembled and
tested evaluation boards (EV boards) that embody the
s ta nd a rd a p p lic a tion c irc uits . The MAX1630 a nd
MAX1632 EV boards provide the triple-output 3.3V/5V/
12V circuit, and the MAX1631 EV board provides the
dual-output 3.3V/5V circuit.
♦ Battery Range: 5.2V to 20V (MAX1630)
5.2V to 28V (MAX1631)
6.5V to 28V (MAX1632)
♦ Outputs: 3.3V at 3A
12V at 120mA
5V at 3A
5V at 30mA Keep-Alive
♦ 1:4 Transformer (MAX1630)
All three use the same PC board but have different
components to accommodate different input voltage
ranges. The main differences between the MAX1630
and MAX1632 EV boards are in the turns ratio (1:4 or
1:2.2) and in the location of the transformer connection
(3.3V side or 5V side). Connecting the transformer to
the 3.3V side allows lower input voltage. Connecting
the transformer to the 5V side provides slightly better
efficiency and lower stress voltages.
1:2.2 Transformer (MAX1632)
♦ Adjustable 2.5V to 5.5V Outputs (optional resistor
divider)
♦ Precision 2.5V Reference Output
♦ Oscillator Sync Input
♦ Low-Noise Mode Control Input (SKIP)
♦ Power-Good Monitor (RESET output)
♦ Fully Assembled and Tested
These circuits are configured to deliver up to 3A of out-
put current on each of the main PWM outputs with
greater than 90% efficiency. The MAX1630/MAX1631/
MAX1632 EV kits can also be used to evaluate other
output voltages.
______________Ord e rin g In fo rm a t io n
PART
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
BOARD TYPE
Surface Mount
Surface Mount
Surface Mount
MAX1630EVKIT-SO
MAX1631EVKIT-SO
MAX1632EVKIT-SO
________________________________Co m p o n e n t s Co m m o n t o All Th re e EV Kit s
DESIGNATION QTY
DESCRIPTION
DESIGNATION QTY
DESCRIPTION
100mA, 30V dual Schottky diode
Central Semiconductor CMPSH-3A
C1, C7, C21,
5
D3
D6
1
1
0.1µF ceramic capacitors
C22, C25
200mA, 75V dual diode
Central Semiconductor CMPD2838
220µF, 10V, low-ESR tantalum caps
Sprague 594D227X0010D2T or
595D227X0010R2T
C2, C3, C12,
5
C13, C20
N-channel MOSFETs
C5, C6, C15,
N1–N4
R1–R4
R5, R8
4
4
2
International Rectifier IRF7413 or
Siliconix Si4410DY
10µF, 30V electrolytic capacitors
Sanyo OS-CON 30SC10M
4
C16
4.7µF, 25V ceramic capacitor
United Chemicon/Marcon
THCR40E1E475Z
2MΩ, 5% resistors
C8
1
0.020Ω, 1% resistors
Dale WSL-2010-R020-F or
IRC LR2010-01-R020-F
4.7µF, 16V tantalum capacitors
Sprague 595D475X0016A2B
C9, C14
2
R6, R7,
R10–R13,
R15–R18
0
Open
C10, C18, C23
3
1
0
0.01µF ceramic capacitors
0.22µF ceramic capacitor
Open
C17
C19
R9
1
1
1
1
1kΩ, 5% resistor
100kΩ, 5% resistor
10Ω, 5% resistor
DIP-8 dip switch
R14
R19
SW1
4.7µF, 35V tantalum capacitor
Sprague 595D475X0035C2B or
5950475X0035B2B
C24
1
4
1A, 40V Schottky diodes
Nihon EC10QS04 or
Motorola MBRS140T3
MAX1630/MAX1631/MAX1632 PC
board
D1, D5, D7,
D8
None
1
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800