PTHxx060Y
3.3 / 5 / 12 Vin Single Ou t put
DC-DC CONVERTERS Non-isolated DDR/QDR Memory Bus Termination Module
1
• V bus termination output (output the system VREF
)
NEW Product
TT
• 10 A output current
• 3.3 Vdc, 5 Vdc or 12 Vdc input voltage
• DDR and QDR compatible
• ON/OFF inhibit (for V standby)
TT
• Under-voltage lockout
• Operating temperature range: -40 ºC to +85 ºC
• Efficiencies up to 91%
• Output overcurrent protection (non-latching, auto-reset)
• Point-of-Load-Alliance (POLA) compatible
• Available RoHS compliant
The PTHxx060Y are a new series of non-isolated dc-dc converters designed specifically
for bus termination in DDR and QDR memory applications. Operating from either a
3.3 Vdc, 5 Vdc or 12 Vdc input, the modules generate a
sink up to 10 A of current to accurately track their
V
output that will source or
TT
input.
V
V
is the required bus
REF
TT
termination supply voltage, and
bus receiver comparators.
V
is the reference voltage for the memory and chipset
REF
is usually set to half the
V
V
DDQ
power supply voltage.
REF
The PTHxx060Y series employs an actively switched synchronous rectifier output to
provide state of the art stepdown switching conversion. The products are small in size
and are an ideal choice where space, performance and high efficiency are desired.
2 YEAR WARRANTY
All specifications are typical at nominal input, VREF = 1.25 V, full load at 25 °C
unless otherwise stated. Cin, Co1 and Co2 = typical value
SPECIFICATIONS
OUTPUT SPECIFICATIONS
INPUT SPECIFICATIONS CONTD.
Output current
(See Note 1)
(over ∆VREF range)
±10 A
Input capacitance
(See Note 3)
PTH03060Y and PTH05060Y
PTH12060Y
330 µF
560 µF
Remote ON/OFF
Positive logic
Tracking range for VREF
0.55-1.8 V
GENERAL SPECIFICATIONS
Tracking tolerance to VREF (VTT - VREF
(over line, load
)
-10 mV to +10 mV
Efficiency
(Io = 8 A)
PTH03060Y
PTH05060Y
PTH12060Y
86% typ.
86% typ.
83% typ.
and temperature)
Ripple and noise
20 MHz bandwidth
20 mV pk-pk
Insulation voltage
Non-isolated
Load transient response
(See Note 4)
30 µs settling time
Overshoot/undershoot 25 mV typ.
Switching frequency
PTH03060Y
PTH05060Y
PTH12060Y
550-650 kHz
550-650 kHz
200-300 kHz
Output capacitance:
Non-ceramic values
(See Notes 4 and 5)
PTH03060Y 470 µF typ., 5,500 µF max.
PTH05060Y 470 µF typ., 5,500 µF max.
PTH12060Y 940 µF typ., 5,500 µF max.
Approvals and
standards
EN60950
UL/cUL60950
Ceramic values
(See Note 4)
PTH03060Y 200 µF typ., 300 µF max.
PTH05060Y 200 µF typ., 300 µF max.
PTH12060Y 400 µF typ., 600 µF max.
Material flammability
Dimensions
UL94V-0
(L x W x H)
25.27 x 15.75 x 9.00 mm
0.995 x 0.620 x 0.354 in
(See Note 6)
ESR (non-ceramic)
4 mΩ min
Weight
MTBF
3.7 g (0.13 oz)
INPUT SPECIFICATIONS
Input current
Telcordia SR-332
6,000,000 hours
No load
10 mA
ENVIRONMENTAL SPECIFICATIONS
Input voltage range
PTH03060Y
PTH05060Y
PTH12060Y
2.95-3.65 Vdc
4.5-5.5 Vdc
10.8-13.2 Vdc
Thermal performance
(See Note 2)
Operating ambient,
temperature
-40 ºC to +85 ºC
Non-operating
-40 ºC to +125 ºC
Level 3
Undervoltage lockout:
PTH03060Y
MSL (‘Z’ suffix only)
JEDEC J-STD-020C
All models
Vin increasing 2.45 V typ., 2.80 V max.
Vin decreasing 2.20 V min., 2.40 V typ.
PROTECTION
PTH05060Y
PTH12060Y
Vin increasing 4.30 V typ., 4.45 V max.
Vin decreasing 3.40 V min., 3.70 V typ.
Overcurrent threshold
(auto reset)
20 A typ.
Vin increasing
Vin decreasing
9.5 V typ., 10.4 V max.
8.80 V min., 9.0 V typ.
File Name: pthxx060y.pdf Rev (02): 19 Dec 2005