PTD08A210W Datasheet, PDF (4/15 Pages) Texas Instruments – SINGLE 10-A OUTPUT 4.75-V to 14-V INPUT, NON-ISOLATED DIGITAL POWERTRAIN MODULE

PTD08A210W
SLTS300 – SEPTEMBER 2010
www.ti.com
ELECTRICAL CHARACTERISTICS
PTD08A210W
T_A= 25°C, F_SW= 750kHz, V_I= 12 V, V_O= 1.2 V, C_IN1= 330 µF, C_IN2= 22 µF ceramic, C_O1= 47 µF ceramic, C_O2= 330 µF, I_O=
I_O(max) (unless otherwise stated)
PARAMETER
TEST CONDITIONS
PTD08A210W
UNIT
MIN
TYP
MAX
I_O
V_I
V_OADJ
Output current
Input voltage range
Output voltage adjust range
Over V_O range
Over I_O range
Over I_O range
25°C, natural convection
h
Efficiency
I_O = 10 A,
fs = 750 kHz
V_OPP
I_B
V_IH
V_IL
V_O Ripple (peak-to-peak)
Bias current
High-level input voltage
Low-level input voltage
PWM input
20-MHz bandwidth
PWM & SRE to AGND
SRE & PWM input levels
Frequency range
Pulse width limits
V_O = 3.3 V
V_O = 2.5 V
V_O = 1.8 V
V_O = 1.2 V
V_O = 0.8 V
Standby
0
4.75
0.7
92.0%
90.4%
88.4%
84.7%
80.0%
11
6
2.0
500 ⁽¹⁾
20
10
A
14
V
3.6 ⁽¹⁾
V
5.5
0.8
1000
mV_PP
mA
V
kHz
ns
Range
-40
125 °C
TEMP output
Accuracy, -40°C ≤ T_A ≤ 85°C
Slope
-5
10
5 °C
mV/°C
V_OH
V_OL
FAULT output
I_LIM
Offset, T_A = 25°C
High-level output voltage, I_FAULT = 4mA
Low-level output voltage, I_FAULT = 4mA
Overcurrent threshold; Reset, followed by auto-recovery
Range
2.7
0.15
720
3.3
0
15 ⁽²⁾
mV
V
0.6
A
3.5
V
IOUT output
Gain, 3A ≤ I_O ≤ 10A
Offset, I_O = 0A, V_O = 1.2V
Output Impedance
188
200
212 mV/A
0
0.3
0.6
V
10
kΩ
C_I
External input capacitance
Capacitance Value
C_O
External output capacitance
Equivalent series resistance (non-ceramic)
Nonceramic
Ceramic
Nonceramic
Ceramic
330 ⁽³⁾
µF
22 ⁽³⁾
330 ⁽⁴⁾ 5000⁽⁵⁾
µF
47 ⁽⁴⁾
1 ⁽⁶⁾
mΩ
(1) When operating at 12V input and 500kHz, V_O is limited to ≤ 2.0V.
(2) The current limit threshold is the sum of I_O and the peak inductor ripple current.
(3) A 22 µF ceramic input capacitor is required for proper operation. An additional 330 µF bulk capacitor rated for a minimum of 500mA rms
of ripple current is recommended. When operating at frequencies > 500kHz the 22 µF ceramic capacitor is only recommended. Refer to
the UCD9240 controller datasheet and user interface for application specific capacitor specifications.
(4) A 47 µF ceramic output capacitor is required for basic operation. An additional 330 µF bulk capacitor is recommended for improved
transient response. Refer to the UCD9240 controller datasheet and user interface for application specific capacitor specifications.
(5) 5,000 µF is the calculated maximum output capacitance given a 1V/msec output voltage rise time. Additional capacitance or increasing
the output voltage rise rate may trigger the overcurrent threshold at start-up. Refer to the UCD9240 controller datasheet and user
interface for application specific capacitor specifications.
(6) This is the minimum ESR for all non-ceramic output capacitance. Refer to the UCD9240 controller datasheet and user interface for
application specific capacitor specifications.
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