S32A-5SDAC-RA
HDLV
Family
Features
• 32-amp Output Current
• 90 % Efficiency
• Nonisolated Output
• Remote Sense
• Short-circuit Protection
with auto-restart
• Fast Transient Response
• Programmable Output
• Output Precharge
Capability
Description
The S32A is a full-featured, 32-amp DC-DC converter that provides the
space-saving advantages of a Dual-in-line Packaging (DIP) form factor.
Ideal for powering todayís ASICs, DSPs and microprocessors, the S32A
features superb dynamic response, remote sense and overcurrent
protection. The programmable output allows the customer to standardize
on a single part for any output from 1.25 to 3.5 volts. Using a standard pin-
out, the S32A packs over 100 watts of power into a minimal 1.5 in2of
board space.
Common Specifications
Min Nom Max Units Notes
Input
Voltage 4.5 5 5.5 Vdc 4.75 Vin startup
Bias Voltage 10.8 12 13.2 Vdc
Bias Current 100 mA
Control Voltage
High = On 2.4 Vdc
Low = Off 0.4 Vdc
Control Current 1 mA
Output
Current 0 32 A
Current Limit 40 50 60 A
Voltage Setpoint Accuracy ±2 %Vnom
Line Regulation ±10 mV
Load Regulation ±10 mV
Ripple / Noise 50 100 150 mV pp
Dynamic Response
16-32 A load 200 mV ∆i/∆t=3 A/µs
100 µs ∆i/∆t=3 A/µs
32-16 A load 200 mV ∆i/∆t=3 A/µs
100 µs ∆i/∆t=3 A/µs
Temperature Regulation ±0.02 %Vout/°C
General
Operating Temperature -25 85 °C
-40 125 °C optional
Storage Temperature -40 125 °C
Switching Frequency 200 300 400 kHz
Efficiency 92 % Iout = 32 A, Vout = 3.3 V
Reliable Electronic Solutions
Asia-Pacific:
Europe:
The Americas:
www.bourns.com
TEL +886- (0)2 25624117 • FAX +886- (0)2 25624116
TEL +41-41 768 5555 • FAX +41-41 768 5510
TEL +1-951 781 5500 • FAX +1-951 781-5700
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
S32A-5SDAC-RA
HDLV
Family
Pin Connections
1 VID0
2 VID1
3 VID2
4 VID3
5 Remote Enable
6 VID4
7-11 Vin
12 Sense Gnd
13-19 Gnd
20-15 Vout
26 Sense Vout
27 Sync (optional)
0.10 (2.5) x 26
127
inches (mm)
0.xx ±0.01 inches
0.xxx ±0.005 inches
3.03 (76.9) 0.35
.135
±.015
1.52
100
80
60
40
20
0
-40 -20 0 60 80-30 -10
Ambient Temperature (°C)
%Max Output
S32A Temperature Derating
50 70 90
400 LFM
300 LFM
100 LFM
Still Air
ì-Zî Low
Tem p
Option
Top View End View
VID4 VID3 VID2 VID1 VID0 Output
011111.30
011101.35
011011.40
011001.45
010111.50
010101.55
010011.60
010001.65
001111.70
001101.75
001011.80
001001.85
000111.90
000101.95
000012.00
000002.05
VID4 VID3 VID2 VID1 VID0 Output
11111N/A
111102.10
111012.20
111002.30
110112.40
110102.50
110012.60
110002.70
101112.80
101102.90
101013.00
101003.10
100113.20
100103.30
100013.40
100003.50
Output Voltage Selection
Notes
1. The S32A requires a minimum output capacitance of 1,200 µf for proper operation.
2. A minimum input capacitance of 2,400 µf is required for proper operation.
Standard Options
Add option designators to the end of the part number. Example; S32A-5SDAC-Z
Option Description
Z -40 °C Operation
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
REV. 01/05
